TLC272_16 [TI]
PRECISION DUAL OPERATIONAL AMPLIFIERS;
| 型号： | TLC272_16 |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | PRECISION DUAL OPERATIONAL AMPLIFIERS 放大器 |
| 文件： | 总36页 (文件大小：587K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
D, JG, P, OR PW PACKAGE
(TOP VIEW)
Trimmed Offset Voltage:
TLC277 . . . 500 µV Max at 25°C,
= 5 V
V
DD
1OUT
1IN–
1IN+
GND
V
DD
1
2
3
4
8
7
6
5
Input Offset Voltage Drift . . . Typically
0.1 µV/Month, Including the First 30 Days
2OUT
2IN–
2IN+
Wide Range of Supply Voltages Over
Specified Temperature Range:
0°C to 70°C . . . 3 V to 16 V
FK PACKAGE
(TOP VIEW)
–40°C to 85°C . . . 4 V to 16 V
–55°C to 125°C . . . 4 V to 16 V
Single-Supply Operation
Common-Mode Input Voltage Range
Extends Below the Negative Rail (C-Suffix,
I-Suffix types)
3
2
1
20 19
18
NC
NC
4
5
6
7
8
2OUT
NC
1IN–
NC
17
16
15
14
Low Noise . . . Typically 25 nV/√Hz at
f = 1 kHz
2IN–
NC
1IN+
NC
Output Voltage Range Includes Negative
Rail
9 10 11 12 13
12
High Input impedance . . . 10 Ω Typ
ESD-Protection Circuitry
Small-Outline Package Option Also
Available in Tape and Reel
NC – No internal connection
DISTRIBUTION OF TLC277
INPUT OFFSET VOLTAGE
Designed-in Latch-Up Immunity
30
25
20
15
10
description
473 Units Tested From 2 Wafer Lots
= 5 V
DD
= 25°C
V
T
The TLC272 and TLC277 precision dual
operational amplifiers combine a wide range of
input offset voltage grades with low offset voltage
drift, high input impedance, low noise, and speeds
approaching that of general-purpose BiFET
devices.
A
P Package
These devices use Texas instrumentssilicon-gate
LinCMOS technology, which provides offset
voltage stability far exceeding the stability
available with conventional metal-gate pro-
cesses.
5
The extremely high input impedance, low bias
currents, and high slew rates make these cost-
effective devices ideal for applications which have
previously been reserved for BiFET and NFET
products. Four offset voltage grades are available
(C-suffix and I-suffix types), ranging from the
0
–800
–400
0
400
800
V
IO
– Input Offset Voltage – µV
low-cost TLC272 (10 mV) to the high-precision TLC277 (500 µV). These advantages, in combination with good
common-mode rejection and supply voltage rejection, make these devices a good choice for new
state-of-the-art designs as well as for upgrading existing designs.
LinCMOS is a trademark of Texas Instruments Incorporated.
Copyright 1994, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
AVAILABLE OPTIONS
PACKAGED DEVICES
CHIP
FORM
(Y)
V
max
SMALL
OUTLINE
(D)
CHIP
CARRIER
(FK)
CERAMIC
DIP
PLASTIC
DIP
IO
AT 25°C
T
A
TSSOP
(PW)
(JG)
(P)
500 µV TLC277CD
2 mV TLC272BCD
5 mV TLC272ACD
10mV TLC272CD
—
—
—
—
—
—
—
—
TLC277CP
TLC272BCP
TLC272ACP
TLC272CP
—
—
—
—
—
—
0°C to 70°c
TLC272CPW
TLC272Y
500 µV TLC277ID
2 mV TLC272BID
5 mV TLC272AID
10 mV TLC272ID
—
—
—
—
—
—
—
—
TLC277IP
TLC272BIP
TLC272AIP
TLC272IP
—
—
—
—
—
—
—
—
–40°C to 85°C
–55°C to 125°C
500 µV TLC277MD
10 mV TLC272MD
TLC277MFK TLC277MJG TLC277MP
TLC272MFK TLC272MJG TLC272MP
—
—
—
—
The D package is available taped and reeled. Add R suffix to the device type (e.g., TLC277CDR).
description (continued)
Ingeneral, manyfeaturesassociatedwithbipolartechnologyareavailableonLinCMOS operationalamplifiers
without the power penalties of bipolar technology. General applications such as transducer interfacing, analog
calculations, amplifier blocks, active filters, and signal buffering are easily designed with the TLC272 and
TLC277. The devices also exhibit low voltage single-supply operation, making them ideally suited for remote
and inaccessible battery-powered applications. The common-mode input voltage range includes the negative
rail.
A wide range of packaging options is available, including small-outline and chip carrier versions for high-density
system applications.
The device inputs and outputs are designed to withstand –100-mA surge currents without sustaining latch-up.
TheTLC272andTLC277incorporateinternalESD-protectioncircuitsthatpreventfunctionalfailuresatvoltages
up to 2000 V as tested under MIL-STD-883C, Method 3015.2; however, care should be exercised in handling
these devices as exposure to ESD may result in the degradation of the device parametric performance.
The C-suffix devices are characterized for operation from 0°C to 70°C. The I-suffix devices are characterized
for operation from –40°C to 85°C. The M-suffix devices are characterized for operation over the full military
temperature range of –55°C to 125°C.
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
equivalent schematic (each amplifier)
V
DD
P3
P4
R6
N5
C1
R1
R2
IN–
IN+
P5
P6
P1
P2
R5
OUT
N3
D2
N1
R3
N6
R7
N7
N2
D1
N4
R4
GND
TLC272Y chip information
This chip, when properly assembled, displays characteristics similar to the TLC272C. Thermal compression or
ultrasonic bonding may be used on the doped-aluminum bonding pads. Chips may be mounted with conductive
epoxy or a gold-silicon preform.
BONDING PAD ASSIGNMENTS
V
DD
(8)
(3)
(2)
+
–
1IN+
1IN–
(1)
1OUT
(5)
(6)
+
2IN+
2IN–
(7)
2OUT
–
60
(4)
GND
CHIP THICKNESS: 15 TYPICAL
BONDING PADS: 4 × 4 MINIMUM
T max = 150°C
J
TOLERANCES ARE ±10%.
ALL DIMENSIONS ARE IN MILS.
73
PIN (4) IS INTERNALLY CONNECTED
TO BACKSIDE OF CHIP.
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
†
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V
DD
Differential input voltage, V (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±V
Input voltage range, V (any input) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to V
ID
DD
DD
I
Input current, I . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±5 mA
I
output current, I (each output) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±30 mA
O
Total current into V
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 mA
DD
Total current out of GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 mA
Duration of short-circuit current at (or below) 25°C (see Note 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . unlimited
Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating free-air temperature, T : C suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
A
I suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –40°C to 85°C
M suffix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to 125°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
Case temperature for 60 seconds: FK package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: D, P, or PW package . . . . . . . . . . . . 260°C
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: JG package . . . . . . . . . . . . . . . . . . . . 300°C
†
Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltage values, except differential voltages, are with respect to network ground.
2. Differential voltages are at IN+ with respect to IN–.
3. The output may be shorted to either supply. Temperature and/or supply voltages must be limited to ensure that the maximum
dissipation rating is not exceeded (see application section).
DISSIPATION RATING TABLE
T
≤ 25°C
DERATING FACTOR
T
= 70°C
T
= 85°C
T = 125°C
A
A
A
A
PACKAGE
POWER RATING
ABOVE T = 25°C
POWER RATING
POWER RATING
377 mW
715 mW
546 mW
520 mW
N/A
POWER RATING
A
D
FK
JG
P
725 mW
5.8 mW/°C
11 mW/°C
8.4 mW/°C
8.0 mW/°C
4.2 mW/°C
464 mW
N/A
1375 mW
1050 mW
1000 mW
525 mW
880 mW
275 mW
210 mW
N/A
672 mW
640 mW
PW
336 mW
N/A
recommended operating conditions
C SUFFIX
I SUFFIX
M SUFFIX
UNIT
V
MIN
3
MAX
MIN
4
MAX
16
MIN
4
MAX
16
Supply voltage, V
16
3.5
8.5
70
DD
V
V
= 5 V
–0.2
–0.2
0
–0.2
–0.2
–40
3.5
8.5
85
0
3.5
DD
Common-mode input voltage, V
V
IC
Operating free-air temperature, T
= 10 V
0
8.5
DD
–55
125
°C
A
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
electrical characteristics at specified free-air temperature, V
= 5 V (unless otherwise noted)
DD
TLC272C, TLC272AC,
TLC272BC, TLC277C
†
PARAMETER
TEST CONDITIONS
T
A
UNIT
MIN
TYP
MAX
10
25°C
Full range
25°C
1.1
V
R
= 1.4 V,
= 50 Ω,
V
R
= 0,
IC
L
O
S
TLC272C
TLC272AC
TLC272BC
TLC277C
= 10 kΩ
12
mV
0.9
230
200
5
V
R
= 1.4 V,
= 50 Ω,
V
R
= 0,
O
IC
= 10 kΩ
Full range
25°C
6.5
S
L
V
IO
Input offset voltage
2000
3000
500
1500
V
R
= 1.4 V,
= 50 Ω,
V
R
= 0,
O
IC
= 10 kΩ
Full range
25°C
S
L
µV
V
R
= 1.4 V,
= 50 Ω,
V
R
= 0,
O
IC
= 10 kΩ
Full range
S
L
25°C to
70°C
α
Temperature coefficient of input offset voltage
Input offset current (see Note 4)
1.8
µV/°C
VIO
25°C
70°C
25°C
70°C
0.1
7
I
IO
V
V
= 2.5 V,
= 2.5 V,
V
V
= 2.5 V
= 2.5 V
pA
O
IC
300
600
0.6
40
I
IB
Input bias current (see Note 4)
pA
V
O
IC
–0.2
to
–0.3
to
25°C
4
4.2
Common-mode input voltage range
(see Note 5)
V
ICR
–0.2
to
Full range
V
V
3.5
25°C
0°C
3.2
3
3.8
3.8
3.8
0
V
V
High-level output voltage
V
V
V
V
= 100 mV,
R
= 10 kΩ
= 0
OH
ID
ID
O
L
70°C
25°C
0°C
3
50
50
50
Low-level output voltage
= –100 mV,
= 0.25 V to 2 V,
I
0
mV
V/mV
dB
OL
OL
70°C
25°C
0°C
0
5
4
23
27
20
80
84
85
95
94
96
1.4
1.6
1.2
A
VD
Large-signal differential voltage amplification
R
= 10 kΩ
L
70°C
25°C
0°C
4
65
60
60
65
60
60
CMRR Common-mode rejection ratio
Supply-voltage rejection ratio
= V
min
ICR
IC
70°C
25°C
0°C
k
V
V
= 5 V to 10 V,
V
V
= 1.4 V
dB
SVR
DD
O
(∆V
/∆V )
DD
IO
70°C
25°C
0°C
3.2
3.6
2.6
= 2.5 V,
= 5 V,
O
IC
I
Supply current (two amplifiers)
mA
DD
No load
70°C
†
Full range is 0°C to 70°C.
NOTES: 4. The typical values of input bias current and input offset current below 5 pA were determined mathematically.
5. This range also applies to each input individually.
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
electrical characteristics at specified free-air temperature, V
= 10 V (unless otherwise noted)
DD
TLC272C, TLC272AC,
TLC272BC, TLC277C
†
PARAMETER
TEST CONDITIONS
T
A
UNIT
MIN
TYP
MAX
10
25°C
Full range
25°C
1.1
V
R
= 1.4 V,
= 50 Ω,
V
R
= 0,
IC
L
O
S
TLC272C
TLC272AC
TLC272BC
TLC277C
= 10 kΩ
12
mV
0.9
290
250
5
V
R
= 1.4 V,
= 50 Ω,
V
R
= 0,
O
IC
= 10 kΩ
Full range
25°C
6.5
S
L
V
IO
Input offset voltage
2000
3000
800
1900
V
R
= 1.4 V,
= 50 Ω,
V
R
= 0,
O
IC
= 10 kΩ
Full range
25°C
S
L
µV
V
R
= 1.4 V,
= 50 Ω,
V
R
= 0,
O
IC
= 10 kΩ
Full range
S
L
25°C to
70°C
α
Temperature coefficient of input offset voltage
Input offset current (see Note 4)
2
µV/°C
VIO
25°C
70°C
25°C
70°C
0.1
7
I
IO
V
V
= 5 V,
= 5 V,
V
V
= 5 V
= 5 V
pA
O
IC
300
600
0.7
50
I
IB
Input bias current (see Note 4)
pA
V
O
IC
–0.2
to
–0.3
to
25°C
9
9.2
Common-mode input voltage range
(see Note 5)
V
ICR
–0.2
to
Full range
V
V
8.5
25°C
0°C
8
7.8
7.8
8.5
8.5
8.4
0
V
V
High-level output voltage
V
V
V
V
= 100 mV,
= –100 mV,
= 1 V to 6 V,
R
= 10 kΩ
= 0
OH
ID
ID
O
L
70°C
25°C
0°C
50
50
50
Low-level output voltage
I
0
mV
V/mV
dB
OL
OL
70°C
25°C
0°C
0
10
7.5
7.5
65
60
60
65
60
60
36
42
32
85
88
88
95
94
96
1.9
2.3
1.6
A
VD
Large-signal differential voltage amplification
R
= 10 kΩ
L
70°C
25°C
0°C
CMRR Common-mode rejection ratio
Supply-voltage rejection ratio
= V
min
ICR
IC
70°C
25°C
0°C
k
V
V
= 5 V to 10 V,
V
V
= 1.4 V
dB
SVR
DD
O
(∆V
/∆V )
DD
IO
70°C
25°C
0°C
4
4.4
3.4
= 2.5 V,
= 5 V,
O
IC
I
Supply current (two amplifiers)
mA
DD
No load
70°C
†
Full range is 0°C to 70°C.
NOTES: 4. The typical values of input bias current and input offset current below 5 pA were determined mathematically.
5. This range also applies to each input individually.
6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
electrical characteristics at specified free-air temperature, V
= 5 V (unless otherwise noted)
DD
TLC272I, TLC272AI,
TLC272BI, TLC277I
†
PARAMETER
TEST CONDITIONS
T
A
UNIT
MIN
TYP
MAX
10
25°C
Full range
25°C
1.1
V
R
= 1.4 V,
= 50 Ω,
V
R
= 0,
IC
L
O
S
TLC272I
TLC272AI
TLC272BI
TLC277I
= 10 kΩ
13
mV
0.9
230
200
5
V
R
= 1.4 V,
= 50 Ω,
V
R
= 0,
O
IC
= 10 kΩ
Full range
25°C
7
S
L
V
IO
Input offset voltage
2000
3500
500
2000
V
R
= 1.4 V,
= 50 Ω,
V
R
= 0,
O
IC
= 10 kΩ
Full range
25°C
S
L
µV
V
R
= 1.4 V,
= 50 Ω,
V
R
= 0,
O
IC
= 10 kΩ
Full range
S
L
25°C to
85°C
Temperature coefficient of input offset voltage
Input offset current (see Note 4)
1.8
µV/°C
α
VIO
25°C
85°C
25°C
85°C
0.1
24
I
IO
V
V
= 2.5 V,
= 2.5 V,
V
V
= 2.5 V
= 2.5 V
pA
O
IC
15
35
0.6
200
I
IB
Input bias current (see Note 4)
pA
V
O
IC
–0.2
to
–0.3
to
25°C
4
4.2
Common-mode input voltage range
(see Note 5)
V
ICR
–0.2
to
Full range
V
V
3.5
25°C
–40°C
85°C
3.2
3
3.8
3.8
3.8
0
V
V
High-level output voltage
V
V
V
V
= 100 mV,
= –100 mV,
= 1 V to 6 V,
R
= 10 kΩ
= 0
OH
ID
ID
O
L
3
25°C
50
50
50
Low-level output voltage
I
–40°C
85°C
0
mV
V/mV
dB
OL
OL
0
25°C
5
3.5
3.5
65
60
60
65
60
60
23
32
19
80
81
86
95
92
96
1.4
1.9
1.1
Large-signal differential voltage amplification
A
VD
R
= 10 kΩ
–40°C
85°C
L
25°C
CMRR Common-mode rejection ratio
Supply-voltage rejection ratio
= V
min
ICR
–40°C
85°C
IC
25°C
k
V
V
= 5 V to 10 V,
V
V
= 1.4 V
–40°C
85°C
dB
SVR
DD
O
(∆V
DD
/∆V )
IO
25°C
3.2
4.4
2.4
= 5 V,
= 5 V,
O
IC
I
Supply current (two amplifiers)
–40°C
85°C
mA
DD
No load
†
Full range is –40°C to 85°C.
NOTES: 4. The typical values of input bias current and input offset current below 5 pA were determined mathematically.
5. This range also applies to each input individually.
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
electrical characteristics at specified free-air temperature, V
= 10 V (unless otherwise noted)
DD
TLC272I, TLC272AI,
TLC272BI, TLC277I
†
PARAMETER
TEST CONDITIONS
T
A
UNIT
MIN
TYP
MAX
10
25°C
Full range
25°C
1.1
V
R
= 1.4 V,
= 50 Ω,
V
R
= 0,
IC
L
O
S
TLC272I
TLC272AI
TLC272BI
TLC277I
= 10 kΩ
13
mV
0.9
290
250
5
V
R
= 1.4 V,
= 50 Ω,
V
R
= 0,
O
IC
= 10 kΩ
Full range
25°C
7
S
L
V
IO
Input offset voltage
2000
3500
800
2900
V
R
= 1.4 V,
= 50 Ω,
V
R
= 0,
O
IC
= 10 kΩ
Full range
25°C
S
L
µV
V
R
= 1.4 V,
= 50 Ω,
V
R
= 0,
O
IC
= 10 kΩ
Full range
S
L
25°C to
85°C
Temperature coefficient of input offset voltage
Input offset current (see Note 4)
2
µV/°C
α
VIO
25°C
85°C
25°C
85°C
0.1
26
I
IO
V
V
= 5 V,
= 5 V,
V
V
= 5 V
= 5 V
pA
O
IC
1000
2000
0.7
220
I
IB
Input bias current (see Note 4)
pA
V
O
IC
–0.2
to
–0.3
to
25°C
9
9.2
Common-mode input voltage range
(see Note 5)
V
ICR
–0.2
to
Full range
V
V
8.5
25°C
–40°C
85°C
8
7.8
7.8
8.5
8.5
8.5
0
V
V
High-level output voltage
V
V
V
V
= 100 mV,
= –100 mV,
= 1 V to 6 V,
R
= 10 kΩ
= 0
OH
ID
ID
O
L
25°C
50
50
50
Low-level output voltage
I
–40°C
85°C
0
mV
V/mV
dB
OL
OL
0
25°C
10
7
36
46
31
85
87
88
95
92
96
1.4
2.8
1.5
A
VD
Large-signal differential voltage amplification
R
= 10 kΩ
–40°C
85°C
L
7
25°C
65
60
60
65
60
60
CMRR Common-mode rejection ratio
Supply-voltage rejection ratio
= V
min
ICR
–40°C
85°C
IC
25°C
k
V
V
= 5 V to 10 V,
V
V
= 1.4 V
–40°C
85°C
dB
SVR
DD
O
(∆V
DD
/∆V )
IO
25°C
4
5
= 5 V,
= 5 V,
O
IC
I
Supply current (two amplifiers)
–40°C
85°C
mA
DD
No load
3.2
†
Full range is –40°C to 85°C.
NOTES: 4. The typical values of input bias current and input offset current below 5 pA were determined mathematically.
5. This range also applies to each input individually.
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
electrical characteristics at specified free-air temperature, V
= 5 V (unless otherwise noted)
DD
TLC272M, TLC277M
†
T
A
PARAMETER
TEST CONDITIONS
UNIT
MIN
TYP
MAX
10
25°C
Full range
25°C
1.1
V
R
= 1.4 V,
= 50 Ω,
V
R
= 0,
= 10 kΩ
O
S
IC
L
TLC272M
TLC277M
mV
12
V
IO
Input offset voltage
200
500
3750
V
R
= 1.4 V,
= 50 Ω,
V
R
= 0,
= 10 kΩ
O
IC
L
µV
Full range
S
Temperature coefficient of input offset
voltage
25°C to
125°C
α
2.1
µV/°C
VIO
25°C
125°C
25°C
0.1
1.4
0.6
9
pA
nA
pA
nA
I
Input offset current (see Note 4)
Input bias current (see Note 4)
V
V
= 2.5 V
= 2.5 V
V
V
= 2.5 V
= 2.5 V
IO
O
IC
15
35
I
IB
O
IC
125°C
0
to
4
–0.3
to
4.2
25°C
V
V
Common-mode input voltage range
(see Note 5)
V
ICR
0
to
Full range
3.5
25°C
–55°C
125°C
25°C
3.2
3
3.8
3.8
3.8
0
V
V
High-level output voltage
V
V
V
V
= 100 mV,
R
= 10 kΩ
= 0
V
mV
V/mV
dB
OH
ID
ID
O
L
3
50
50
50
Low-level output voltage
= –100 mV,
= 0.25 V to 2 V
I
–55°C
125°C
25°C
0
OL
OL
0
5
3.5
3.5
65
60
60
65
60
60
23
35
16
80
81
84
95
90
97
1.4
2
A
VD
Large-signal differential voltage amplification
R
= 10 kΩ
–55°C
125°C
25°C
L
CMRR Common-mode rejection ratio
Supply-voltage rejection ratio
= V
min
ICR
–55°C
125°C
25°C
IC
k
V
V
= 5 V to 10 V,
V
V
= 1.4 V
–55°C
125°C
25°C
dB
SVR
DD
O
(∆V
DD
/∆V )
IO
3.2
5
= 2.5 V,
= 2.5 V,
O
IC
I
Supply current (two amplifiers)
–55°C
125°C
mA
DD
No load
1
2.2
†
Full range is –55°C to 125°C.
NOTES: 4. The typical values of input bias current and input offset current below 5 pA were determined mathematically.
5. This range also applies to each input individually.
9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
electrical characteristics at specified free-air temperature, V
= 10 V (unless otherwise noted)
DD
TLC272M, TLC277M
†
T
A
PARAMETER
TEST CONDITIONS
UNIT
MIN
TYP
MAX
10
V
= 1.4 V,
= 50 Ω,
= 1.4 V,
= 50 Ω,
V
= 0,
25°C
Full range
25°C
1.1
O
IC
TLC272M
TLC277M
mV
R
R
= 10 kΩ
12
S
L
V
IO
Input offset voltage
V
O
V
IC
= 0,
250
800
4300
µV
R
R
= 10 kΩ
Full range
S
L
Temperature coefficient of input offset
voltage
25°C to
125°C
α
2.2
µV/°C
VIO
25°C
125°C
25°C
0.1
1.8
0.7
10
pA
nA
pA
nA
I
Input offset current (see Note 4)
Input bias current (see Note 4)
V
V
= 5 V,
= 5 V,
V
V
= 5 V
= 5 V
IO
O
IC
15
35
I
IB
O
IC
125°C
0
to
9
–0.3
to
9.2
25°C
V
V
Common-mode input voltage range
(see Note 5)
V
ICR
0
to
Full range
8.5
25°C
–55°C
125°C
25°C
8
7.8
7.8
8.5
8.5
8.4
0
V
V
High-level output voltage
Low-level output voltage
V
V
V
V
= 100 mV,
= –100 mV,
= 1 V to 6 V,
R
= 10 kΩ
= 0
V
mV
V/mV
dB
OH
ID
ID
O
L
50
50
50
I
–55°C
125°C
25°C
0
OL
OL
0
10
7
36
50
27
85
87
86
95
90
97
1.9
3
Large-signal differential voltage
amplification
A
VD
R
= 10 kΩ
–55°C
125°C
25°C
L
7
65
60
60
65
60
60
CMRR Common-mode rejection ratio
= V
min
ICR
–55°C
125°C
25°C
IC
Supply-voltage rejection ratio
k
V
V
= 5 V to 10 V,
V
V
= 1.4 V
–55°C
125°C
25°C
dB
SVR
DD
O
(∆V
DD
/∆V )
IO
4
6
= 5 V,
= 5 V,
O
IC
I
Supply current (two amplifiers)
–55°C
125°C
mA
DD
1.3
2.8
†
Full range is –55°C to 125°C.
NOTES: 4. The typical values of input bias current and input offset current below 5 pA were determined mathematically.
5. This range also applies to each input individually.
10
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
electrical characteristics, V
= 5 V, T = 25°C (unless otherwise noted)
DD
A
TLC272Y
TYP
PARAMETER
TEST CONDITIONS
UNIT
MIN
MAX
V
R
= 1.4 V,
= 50 Ω,
V
R
= 0,
= 10 kΩ
O
S
IC
L
V
IO
Input offset voltage
1.1
10
mV
α
Temperature coefficient of input offset voltage
Input offset current (see Note 4)
1.8
0.1
0.6
µV/°C
pA
VIO
I
V
V
= 2.5 V,
= 2.5 V,
V
V
= 2.5 V
= 2.5 V
IO
IB
O
IC
I
Input bias current (see Note 4)
pA
O
IC
–0.2
to
–0.3
to
4.2
V
ICR
Common-mode input voltage range (see Note 5)
V
4
V
V
High-level output voltage
V
V
V
V
V
V
= 100 mV,
R
= 10 kΩ
= 0
3.2
3.8
0
V
mV
V/mV
dB
OH
ID
ID
O
L
Low-level output voltage
= –100 mV,
= 0.25 V to 2 V
I
50
OL
OL
A
VD
Large-signal differential voltage amplification
R
= 10 kΩ
5
65
65
23
80
95
L
CMRR Common-mode rejection ratio
= V
min
IC
DD
ICR
= 5 V to 10 V,
k
Supply-voltage rejection ratio (∆V
/∆V
IO
)
V
V
= 1.4 V
dB
SVR
DD
O
= 2.5 V,
= 2.5 V,
O
IC
I
Supply current (two amplifiers)
1.4
3.2
mA
DD
No load
NOTES: 4. The typical values of input bias current and input offset current below 5 pA were determined mathematically.
5. This range also applies to each input individually.
electrical characteristics, V
= 10 V, T = 25°C (unless otherwise noted)
DD
A
TLC272Y
TYP
PARAMETER
TEST CONDITIONS
UNIT
MIN
MAX
V
R
= 1.4 V,
= 50 Ω,
V
R
= 0,
= 10 kΩ
O
S
IC
L
V
IO
Input offset voltage
1.1
10
mV
Temperature coefficient of input offset voltage
Input offset current (see Note 4)
1.8
0.1
0.7
µV/°C
pA
α
VIO
I
V
V
= 5 V,
= 5 V,
V
V
= 5 V
= 5 V
IO
IB
O
IC
I
Input bias current (see Note 4)
pA
O
IC
–0.2
to
–0.3
to
9.2
V
ICR
Common-mode input voltage range (see Note 5)
V
9
V
V
High-level output voltage
V
V
V
V
V
V
= 100 mV,
= –100 mV,
= 1 V to 6 V,
R
= 10 kΩ
= 0
8
8.5
0
V
mV
V/mV
dB
OH
ID
ID
O
L
Low-level output voltage
I
50
OL
OL
A
VD
Large-signal differential voltage amplification
R
= 10 kΩ
10
65
65
36
85
95
L
CMRR Common-mode rejection ratio
= V
min
IC
DD
ICR
= 5 V to 10 V,
k
Supply-voltage rejection ratio (∆V
/∆V
IO
)
V
V
= 1.4 V
dB
SVR
DD
O
= 5 V,
= 5 V,
O
IC
I
Supply current (two amplifiers)
1.9
4
mA
DD
No load
NOTES: 4. The typical values of input bias current and input offset current below 5 pA were determined mathematically.
5. This range also applies to each input individually.
11
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
operating characteristics at specified free-air temperature, V
= 5 V
DD
TLC272C, TLC272AC,
TLC272BC, TLC277C
PARAMETER
TEST CONDITIONS
T
A
UNIT
MIN
TYP
3.6
4
MAX
25°C
0°C
V
= 1 V
IPP
IPP
R
C
= 10 kΩ,
= 20 pF,
L
L
70°C
25°C
0°C
3
SR
Slew rate at unity gain
V/µs
2.9
3.1
2.5
See Figure 1
V
= 2.5 V
70°C
f = 1 kHz,
See Figure 2
R
= 20 Ω,
S
V
n
Equivalent input noise voltage
25°C
25
nV/√Hz
25°C
0°C
320
340
260
1.7
2
V
R
= V
,
C
= 20 pF,
O
L
OH
= 10 kΩ,
L
B
B
Maximum output-swing bandwidth
kHz
OM
See Figure 1
70°C
25°C
0°C
V = 10 mV,
I
See Figure 3
C = 20 pF,
L
Unity-gain bandwidth
Phase margin
MHz
1
70°C
25°C
0°C
1.3
46°
47°
43°
V = 10 mV,
f = B ,
1
See Figure 3
I
φ
m
C
= 20 pF,
L
70°C
operating characteristics at specified free-air temperature, V
= 10 V
DD
TLC272C, TLC272AC,
TLC272BC, TLC277C
PARAMETER
TEST CONDITIONS
T
A
UNIT
MIN
TYP
5.3
5.9
4.3
4.6
5.1
3.8
MAX
25°C
0°C
V
= 1 V
IPP
IPP
R
C
= 10 kΩ,
= 20 pF,
L
L
70°C
25°C
0°C
SR
Slew rate at unity gain
V/µs
See Figure 1
V
= 5.5 V
70°C
f = 1 kHz,
See Figure 2
R
= 20 Ω,
S
V
n
Equivalent input noise voltage
25°C
25
nV/√Hz
25°C
0°C
200
220
140
2.2
2.5
1.8
49°
50°
46°
V
R
= V
,
C
= 20 pF,
O
L
OH
= 10 kΩ,
L
B
Maximum output-swing bandwidth
kHz
OM
1
See Figure 1
70°C
25°C
0°C
V = 10 mV,
I
See Figure 3
C = 20 pF,
L
B
Unity-gain bandwidth
Phase margin
MHz
70°C
25°C
0°C
V = 10 mV,
f = B ,
1
See Figure 3
I
φ
m
C
= 20 pF,
L
70°C
12
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
operating characteristics at specified free-air temperature, V
= 5 V
DD
TLC272I, TLC272AI,
TLC272BI, TLC277I
PARAMETER
TEST CONDITIONS
T
A
UNIT
MIN
TYP
3.6
4.5
2.8
2.9
3.5
2.3
MAX
25°C
–40°C
85°C
V
= 1 V
IPP
IPP
R
C
= 10 kΩ,
= 20 pF,
L
L
SR
Slew rate at unity gain
V/µs
25°C
See Figure 1
V
= 2.5 V
–40°C
85°C
f = 1 kHz,
See Figure 2
R
= 20 Ω,
S
V
n
Equivalent input noise voltage
25°C
25
nV/√Hz
25°C
–40°C
85°C
320
380
250
1.7
2.6
1.2
46°
49°
43°
V
R
= V
,
C
= 20 pF,
O
L
OH
= 10 kΩ,
L
B
B
Maximum output-swing bandwidth
kHz
OM
See Figure 1
25°C
V = 10 mV,
I
See Figure 3
C = 20 pF,
L
Unity-gain bandwidth
Phase margin
–40°C
85°C
MHz
1
25°C
V = 10 mV,
f = B ,
1
See Figure 3
I
φ
m
–40°C
85°C
C
= 20 pF,
L
operating characteristics at specified free-air temperature, V
= 10 V
DD
TLC272I, TLC272AI,
TLC272BI, TLC277I
PARAMETER
TEST CONDITIONS
T
A
UNIT
MIN
TYP
5.3
6.8
4
MAX
25°C
–40°C
85°C
V
= 1 V
IPP
IPP
R
C
= 10 kΩ,
= 20 pF,
L
L
SR
Slew rate at unity gain
V/µs
25°C
4.6
5.8
3.5
See Figure 1
V
= 5.5 V
–40°C
85°C
f = 1 kHz,
See Figure 2
R
= 20 Ω,
S
V
n
Equivalent input noise voltage
25°C
25
nV/√Hz
25°C
–40°C
85°C
200
260
130
2.2
3.1
1.7
49°
52°
46°
V
R
= V
,
C
= 20 pF,
O
L
OH
= 10 kΩ,
L
B
Maximum output-swing bandwidth
kHz
OM
1
See Figure 1
25°C
V = 10 mV,
I
See Figure 3
C = 20 pF,
L
B
Unity-gain bandwidth
Phase margin
–40°C
85°C
MHz
25°C
V = 10 mV,
f = B ,
1
See Figure 3
I
φ
m
–40°C
85°C
C
= 20 pF,
L
13
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
operating characteristics at specified free-air temperature, V
= 5 V
DD
TLC272M, TLC277M
PARAMETER
TEST CONDITIONS
T
UNIT
A
MIN
TYP
3.6
4.7
2.3
2.9
3.7
2
MAX
25°C
–55°C
125°C
25°C
V
= 1 V
IPP
IPP
R
C
= 10 kΩ,
= 20 pF,
See Figure 1
L
L
SR
Slew rate at unity gain
V/µs
V
= 2.5 V
–55°C
125°C
f = 1 kHz,
See Figure 2
R
= 20 Ω,
S
V
n
Equivalent input noise voltage
25°C
25
nV/√Hz
25°C
–55°C
125°C
25°C
320
400
230
1.7
2.9
1.1
46°
49°
41°
V
R
= V
,
C
= 20 pF,
O
L
OH
= 10 kΩ,
L
B
Maximum output-swing bandwidth
kHz
OM
1
See Figure 1
V = 10 mV,
I
See Figure 3
C = 20 pF,
L
B
Unity-gain bandwidth
Phase margin
–55°C
125°C
25°C
MHz
V = 10 mV,
f = B ,
1
See Figure 3
I
φ
m
–55°C
125°C
C
= 20 pF,
L
operating characteristics at specified free-air temperature, V
= 10 V
DD
TLC272M, TLC277M
PARAMETER
TEST CONDITIONS
T
UNIT
A
MIN
TYP
5.3
7.1
3.1
4.6
6.1
2.7
MAX
25°C
–55°C
125°C
25°C
V
= 1 V
IPP
IPP
R
C
= 10 kΩ,
= 20 pF,
See Figure 1
L
L
SR
Slew rate at unity gain
V/µs
V
= 5.5 V
–55°C
125°C
f = 1 kHz,
See Figure 2
R
= 20 Ω,
S
V
B
Equivalent input noise voltage
25°C
25
nV/√Hz
n
25°C
–55°C
125°C
25°C
200
280
110
2.2
3.4
1.6
49°
52°
44°
V
R
= V
OH
= 10 kΩ,
,
C
= 20 pF,
O
L
L
Maximum output-swing bandwidth
kHz
OM
See Figure 1
V = 10 mV,
I
See Figure 3
C = 20 pF,
L
B
1
Unity-gain bandwidth
Phase margin
–55°C
125°C
25°C
MHz
V = 10 mV,
f = B ,
1
See Figure 3
I
L
φ
m
–55°C
125°C
C
= 20 pF,
14
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
operating characteristics, V
= 5 V, T = 25°C
A
DD
TLC272Y
TYP
PARAMETER
TEST CONDITIONS
UNIT
MIN
MAX
V
V
= 1 V
3.6
R
= 10 kΩ,
C
= 20 pF,
IPP
L
L
SR
Slew rate at unity gain
V/µs
See Figure 1
= 2.5 V
2.9
IPP
V
n
Equivalent input noise voltage
f = 1 kHz,
R
C
= 20 Ω,
See Figure 2
R = 10 kΩ,
L
25
320
1.7
nV/√Hz
kHz
S
L
V
= V
,
= 20 pF,
O
OH
B
Maximum output-swing bandwidth
Unity-gain bandwidth
Phase margin
OM
1
See Figure 1
B
V = 10 mV,
I
C
= 20 pF,
See Figure 3
MHz
L
V = 10 mV,
I
See Figure 3
f = B ,
C
= 20 pF,
1
L
φ
m
46°
operating characteristics, V
= 10 V, T = 25°C
A
DD
TLC272Y
TYP
PARAMETER
TEST CONDITIONS
UNIT
MIN
MAX
V
V
= 1 V
5.3
R
= 10 kΩ,
C
= 20 pF,
IPP
L
L
SR
Slew rate at unity gain
V/µs
See Figure 1
= 5.5 V
4.6
IPP
V
n
Equivalent input noise voltage
f = 1 kHz,
R
C
= 20 Ω,
See Figure 2
R = 10 kΩ,
L
25
200
2.2
nV/√Hz
kHz
S
L
V
= V
,
= 20 pF,
O
OH
B
B
Maximum output-swing bandwidth
Unity-gain bandwidth
Phase margin
OM
See Figure 1
V = 10 mV,
I
C
= 20 pF,
See Figure 3
C = 20 pF,
L
MHz
1
L
V = 10 mV,
I
See Figure 3
f = B ,
1
φ
m
49°
15
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
PARAMETER MEASUREMENT INFORMATION
single-supply versus split-supply test circuits
Because the TLC272 and TLC277 are optimized for single-supply operation, circuit configurations used for the
various tests often present some inconvenience since the input signal, in many cases, must be offset from
ground. This inconvenience can be avoided by testing the device with split supplies and the output load tied to
thenegativerail. Acomparisonofsingle-supplyversussplit-supplytestcircuitsisshownbelow. Theuseofeither
circuit gives the same result.
V
DD
V
DD+
–
+
–
+
V
O
V
O
V
I
V
I
C
R
C
R
L
L
L
L
V
DD–
(a) SINGLE SUPPLY
(b) SPLIT SUPPLY
Figure 1. Unity-Gain Amplifier
2 kΩ
2 kΩ
V
DD
V
DD+
–
20 Ω
20 Ω
–
+
1/2 V
V
O
V
O
DD
+
20 Ω
20 Ω
V
DD–
(a) SINGLE SUPPLY
(b) SPLIT SUPPLY
Figure 2. Noise-Test Circuit
10 kΩ
10 kΩ
V
V
DD
DD+
100 Ω
100 Ω
–
+
–
V
I
V
I
V
O
V
O
+
1/2 V
DD
C
C
L
L
V
DD–
(a) SINGLE SUPPLY
(b) SPLIT SUPPLY
Figure 3. Gain-of-100 Inverting Amplifier
16
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
PARAMETER MEASUREMENT INFORMATION
input bias current
Because of the high input impedance of the TLC272 and TLC277 operational amplifiers, attempts to measure
the input bias current can result in erroneous readings. The bias current at normal room ambient temperature
is typically less than 1 pA, a value that is easily exceeded by leakages on the test socket. Two suggestions are
offered to avoid erroneous measurements:
1. Isolate the device from other potential leakage sources. Use a grounded shield around and between the
device inputs (see Figure 4). Leakages that would otherwise flow to the inputs are shunted away.
2. Compensate for the leakage of the test socket by actually performing an input bias current test (using
a picoammeter) with no device in the test socket. The actual input bias current can then be calculated
by subtracting the open-socket leakage readings from the readings obtained with a device in the test
socket.
One word of caution: many automatic testers as well as some bench-top operational amplifier testers use the
servo-loop technique with a resistor in series with the device input to measure the input bias current (the voltage
drop across the series resistor is measured and the bias current is calculated). This method requires that a
device be inserted into the test socket to obtain a correct reading; therefore, an open-socket reading is not
feasible using this method.
8
5
V = V
IC
1
4
Figure 4. Isolation Metal Around Device Inputs
(JG and P packages)
low-level output voltage
To obtain low-supply-voltage operation, some compromise was necessary in the input stage. This compromise
results in the device low-level output being dependent on both the common-mode input voltage level as well
as the differential input voltage level. When attempting to correlate low-level output readings with those quoted
in the electrical specifications, these two conditions should be observed. If conditions other than these are to
be used, please refer to Figures 14 through 19 in the Typical Characteristics of this data sheet.
input offset voltage temperature coefficient
Erroneous readings often result from attempts to measure temperature coefficient of input offset voltage. This
parameter is actually a calculation using input offset voltage measurements obtained at two different
temperatures. When one (or both) of the temperatures is below freezing, moisture can collect on both the device
and the test socket. This moisture results in leakage and contact resistance, which can cause erroneous input
offset voltage readings. The isolation techniques previously mentioned have no effect on the leakage since the
moisture also covers the isolation metal itself, thereby rendering it useless. It is suggested that these
measurements be performed at temperatures above freezing to minimize error.
17
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
PARAMETER MEASUREMENT INFORMATION
full-power response
Full-power response, the frequency above which the operational amplifier slew rate limits the output voltage
swing, is often specified two ways: full-linear response and full-peak response. The full-linear response is
generallymeasuredbymonitoringthedistortionleveloftheoutputwhileincreasingthefrequencyofasinusoidal
input signal until the maximum frequency is found above which the output contains significant distortion. The
full-peak response is defined as the maximum output frequency, without regard to distortion, above which full
peak-to-peak output swing cannot be maintained.
Because there is no industry-wide accepted value for significant distortion, the full-peak response is specified
in this data sheet and is measured using the circuit of Figure 1. The initial setup involves the use of a sinusoidal
input to determine the maximum peak-to-peak output of the device (the amplitude of the sinusoidal wave is
increased until clipping occurs). The sinusoidal wave is then replaced with a square wave of the same
amplitude. Thefrequencyisthenincreaseduntilthemaximumpeak-to-peakoutputcannolongerbemaintained
(Figure 5). A square wave is used to allow a more accurate determination of the point at which the maximum
peak-to-peak output is reached.
(a) f = 1 kHz
(b) B
OM
> f > 1 kHz
(c) f = B
OM
(d) f > B
OM
Figure 5. Full-Power-Response Output Signal
test time
Inadequate test time is a frequent problem, especially when testing CMOS devices in a high-volume,
short-test-time environment. Internal capacitances are inherently higher in CMOS than in bipolar and BiFET
devices and require longer test times than their bipolar and BiFET counterparts. The problem becomes more
pronounced with reduced supply levels and lower temperatures.
18
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
V
Input offset voltage
Distribution
Distribution
6, 7
8, 9
IO
α
Temperature coefficient of input offset voltage
VIO
vs High-level output current
vs Supply voltage
vs Free-air temperature
10, 11
12
13
V
V
A
High-level output voltage
OH
OL
vs Common-mode input voltage
vs Differential input voltage
vs Free-air temperature
14, 15
16
17
Low-level output voltage
vs Low-level output current
18, 19
vs Supply voltage
vs Free-air temperature
vs Frequency
20
21
32, 33
Large-signal differential voltage amplification
VD
I
I
Input bias current
vs Free-air temperature
vs Free-air temperature
vs Supply voltage
22
22
23
IB
Input offset current
IO
V
Common-mode input voltage
IC
vs Supply voltage
vs Free-air temperature
24
25
I
Supply current
Slew rate
DD
vs Supply voltage
vs Free-air temperature
26
27
SR
Normalized slew rate
vs Free-air temperature
vs Frequency
28
29
V
B
Maximum peak-to-peak output voltage
O(PP)
vs Free-air temperature
vs Supply voltage
30
31
Unity-gain bandwidth
1
vs Supply voltage
vs Free-air temperature
vs Load capacitance
34
35
36
φ
m
Phase margin
V
n
Equivalent input noise voltage
Phase shift
vs Frequency
vs Frequency
37
32, 33
19
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
TYPICAL CHARACTERISTICS
DISTRIBUTION OF TLC272
INPUT OFFSET VOLTAGE
DISTRIBUTION OF TLC272
INPUT OFFSET VOLTAGE
60
50
40
30
20
10
0
60
50
40
30
20
10
0
753 Amplifiers Tested From 6 Wafer Lots
753 Amplifiers Tested From 6 Wafer Lots
V
= 5 V
V
= 10 V
DD
= 25°C
DD
= 25°C
T
A
T
A
P Package
P Package
–5 –4 –3 –2 –1
0
1
2
3
4
5
–5 –4 –3 –2 –1
0
1
2
3
4
5
V
IO
– Input Offset Voltage – mV
V
IO
– Input Offset Voltage – mV
Figure 6
Figure 7
DISTRIBUTION OF TLC272 AND TLC277
INPUT OFFSET VOLTAGE
DISTRIBUTION OF TLC272 AND TLC277
INPUT OFFSET VOLTAGE
TEMPERATURE COEFFICIENT
TEMPERATURE COEFFICIENT
60
50
40
30
20
10
0
60
324 Amplifiers Tested From 8 Wafer Lots
324 Amplifiers Tested From 8 Wafer Lots
V
T
= 5 V
V
T
= 5 V
DD
= 25°C to 125°C
DD
= 25°C to 125°C
50
40
30
20
10
0
A
A
P Package
P Package
Outliers:
(1) 20.5 µV/°C
Outliers:
(1) 21.2 µV/°C
–10 –8 –6 –4 –2
0
2
4
6
8
10
–10 –8 –6 –4 –2
0
2
4
6
8
10
αV – Temperature Coefficient – µV/°C
αV – Temperature Coefficient – µV/°C
IO
IO
Figure 8
Figure 9
20
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
†
TYPICAL CHARACTERISTICS
HIGH-LEVEL OUTPUT VOLTAGE
HIGH-LEVEL OUTPUT VOLTAGE
vs
vs
HIGH-LEVEL OUTPUT CURRENT
HIGH-LEVEL OUTPUT CURRENT
5
4
3
2
1
0
16
14
12
10
8
V
= 100 mV
ID
= 25°C
V
= 100 mV
ID
T = 25°C
A
T
A
V
DD
= 16 V
See Note A
V
DD
= 5 V
V
DD
= 4 V
V
DD
= 10 V
V
= 3 V
DD
6
4
2
0
0
– 2
– 4
– 6
– 8
– 10
0
– 5 – 10 – 15 – 20 – 25 – 30 – 35 – 40
I
– High-Level Output Current – mA
OH
I
– High-Level Output Current – mA
OH
NOTE A: The 3-V curve only applies to the C version.
Figure 10
Figure 11
HIGH-LEVEL OUTPUT VOLTAGE
HIGH-LEVEL OUTPUT VOLTAGE
vs
vs
SUPPLY VOLTAGE
16
FREE-AIR TEMPERATURE
V
V
–1.6
–1.7
DD
V
= 100 mV
ID
I
= –5 mA
OH
14
12
10
8
R
T
= 10 kΩ
= 25°C
L
A
DD
V
ID
= 100 mA
V
DD
= 5 V
V
–1.8
–1.9
DD
V
DD
V
–2
DD
V
DD
= 10 V
6
V
–2.1
–2.2
DD
DD
4
V
2
V
V
–2.3
–2.4
DD
DD
0
0
2
4
6
8
10
12
14
16
–75 –50 –25
0
20
50
75 100 125
V
DD
– Supply Voltage – V
T
– Free-Air Temperature – °C
A
Figure 12
Figure 13
†
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
21
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
†
TYPICAL CHARACTERISTICS
LOW-LEVEL OUTPUT VOLTAGE
vs
COMMON-MODE INPUT VOLTAGE
LOW-LEVEL OUTPUT VOLTAGE
vs
COMMON-MODE INPUT VOLTAGE
700
650
600
550
500
450
400
350
300
500
450
400
350
300
250
V
I
= 5 V
V
= 10 V
DD
DD
I
= 5 mA
= 5 mA
OL
OL
T = 25°C
A
T
A
= 25°C
V
= –100 mV
ID
V
V
V
= –100 mV
= –1 V
ID
ID
ID
= –2.5 V
V
= –1 V
ID
0
0.5
1
1.5
2
2.5
3
3.5
4
0
1
2
3
4
5
6
7
8
9
10
V
IC
– Common-Mode Input Voltage – V
V
IC
– Common-Mode Input Voltage – V
Figure 14
Figure 15
LOW-LEVEL OUTPUT VOLTAGE
vs
DIFFERENTIAL INPUT VOLTAGE
LOW-LEVEL OUTPUT VOLTAGE
vs
FREE-AIR TEMPERATURE
800
700
600
500
400
300
200
100
0
900
800
700
600
500
400
300
200
100
0
I
= 5 mA
OL
I
= 5 mA
= –1 V
= 0.5 V
OL
V
T
= |V 2|
ID/
= 25°C
IC
A
V
V
ID
IC
V
= 5 V
DD
V
= 5 V
DD
V
DD
= 10 V
V
= 10 V
DD
0
–1 –2 –3 –4 –5 –6 –7 –8 –9 –10
–75 –50 –25
0
25
50
75 100 125
V
– Differential Input Voltage – V
ID
T
– Free-Air Temperature – °C
A
Figure 16
Figure 17
†
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
22
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
†
TYPICAL CHARACTERISTICS
LOW-LEVEL OUTPUT VOLTAGE
LOW-LEVEL OUTPUT VOLTAGE
vs
LOW-LEVEL OUTPUT CURRENT
vs
LOW-LEVEL OUTPUT CURRENT
1.0
0.9
3.0
V
V
T
= –1 V
V
V
= –1 V
ID
ID
= 0.5 V
= 0.5 V
IC
= 25°C
IC
2.5
T
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
= 25°C
A
A
V
= 16 V
DD
V
= 5 V
See Note A
DD
2.0
1.5
1.0
0.5
0
V
= 4 V
DD
V
= 10 V
DD
V
= 3 V
DD
0
1
2
3
4
5
6
7
8
0
5
10
15
20
25
30
I
– Low-Level Output Current – mA
I
– Low-Level Output Current – mA
OL
OL
NOTE A: The 3-V curve only applies to the C version.
Figure 18
Figure 19
LARGE-SIGNAL
DIFFERENTIAL VOLTAGE AMPLIFICATION
LARGE-SIGNAL
DIFFERENTIAL VOLTAGE AMPLIFICATION
vs
vs
SUPPLY VOLTAGE
FREE-AIR TEMPERATURE
60
50
40
30
20
10
0
50
T
= –55°C
A
R
= 10 kΩ
R
= 10 kΩ
45
40
35
30
25
20
15
10
L
L
T
A
= 0°C
V
= 10 V
DD
V
= 5 V
T
= 25°C
= 85°C
= 125°C
DD
A
T
A
T
A
5
0
0
2
4
6
8
10
12
14
16
–75 –50 –25
0
25
50
75
100 125
V
DD
– Supply Voltage – V
T
A
– Free-Air Temperature – °C
Figure 20
Figure 21
†
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
23
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
†
TYPICAL CHARACTERISTICS
COMMON-MODE
INPUT VOLTAGE POSITIVE LIMIT
INPUT BIAS CURRENT AND INPUT OFFSET CURRENT
vs
vs
FREE-AIR TEMPERATURE
SUPPLY VOLTAGE
10000
16
14
12
10
8
V
V
= 10 V
DD
= 5 V
T
A
= 25°C
IC
See Note A
1000
100
10
I
IB
I
IO
6
4
1
2
0.1
0
25
35 45 55 65 75 85 95 105 115 125
– Free-Air Temperature – °C
0
2
4
6
8
10
12
14
16
T
A
V
DD
– Supply Voltage – V
NOTE A: The typical values of input bias current and input
offset current below 5 pA were determined mathematically.
Figure 22
Figure 23
SUPPLY CURRENT
vs
SUPPLY VOLTAGE
SUPPLY CURRENT
vs
FREE-AIR TEMPERATURE
5
4
3.5
3
V
= V /2
DD
V
= V /2
4.5
4
O
O DD
No Load
No Load
T
= –55°C
= 0°C
A
3.5
3
2.5
2
T
A
T
= 25°C
A
V
DD
= 10 V
2.5
2
1.5
1
1.5
V
DD
= 5 V
1
0.5
0
T
= 70°C
A
0.5
0
T
A
= 125°C
–75 –50 –25
0
25
50
75
100 125
0
2
4
6
8
10
12
14
16
T
A
– Free-Air Temperature – °C
V
DD
– Supply Voltage – V
Figure 24
Figure 25
†
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
24
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
†
TYPICAL CHARACTERISTICS
SLEW RATE
vs
SLEW RATE
vs
FREE-AIR TEMPERATURE
SUPPLY VOLTAGE
8
7
6
5
4
3
2
1
0
8
A
= 1
= 1 V
= 10 kΩ
= 20 pF
= 25°C
A
R
C
= 1
= 10 kΩ
= 20 pF
V
V
L
L
V
R
C
IPP
7
6
5
4
3
2
1
0
V
V
= 10 V
= 5.5 V
DD
L
L
IPP
See Figure 1
T
A
See Figure 1
V
V
= 10 V
= 1 V
DD
IPP
V
V
= 5 V
= 1 V
DD
IPP
V
V
= 5 V
DD
= 2.5 V
IPP
0
2
4
V
6
8
10
12
14
16
–75 –50 –25
0
25
50
75 100 125
– Supply Voltage – V
DD
T
A
– Free-Air Temperature – °C
Figure 26
Figure 27
NORMALIZED SLEW RATE
vs
FREE-AIR TEMPERATURE
MAXIMUM PEAK OUTPUT VOLTAGE
vs
FREQUENCY
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
10
9
8
7
6
5
4
3
2
1
0
A
= 1
V
V
DD
= 10 V
V
IPP
= 1 V
= 10 kΩ
= 20 pF
R
V
= 10 V
L
L
DD
C
T
= 125°C
= 25°C
= –55°C
A
T
A
T
A
V
DD
= 5 V
V
DD
= 5 V
R
= 10 kΩ
L
See Figure 1
–75 –50 –25
0
25
50
75 100 125
10
100
1000
10000
T
A
– Free-Air Temperature – °C
f – Frequency – kHz
Figure 28
Figure 29
†
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
25
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
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†
TYPICAL CHARACTERISTICS
UNITY-GAIN BANDWIDTH
vs
UNITY-GAIN BANDWIDTH
vs
FREE-AIR TEMPERATURE
SUPPLY VOLTAGE
2.5
2.0
1.5
1.0
3.0
2.5
2.0
1.5
1.0
V = 10 mV
V
= 5 V
I
DD
V = 10 mV
C
= 20 pF
L
I
T
A
= 25°C
C
= 20 pF
L
See Figure 3
See Figure 3
0
2
4
6
8
10
12
14
16
–75 –50 –25
0
25
50
75 100 125
V
DD
– Supply Voltage – V
T
A
– Free-Air Temperature – °C
Figure 30
Figure 31
LARGE-SIGNAL DIFFERENTIAL VOLTAGE
AMPLIFICATION AND PHASE SHIFT
vs
FREQUENCY
7
10
6
10
5
10
4
10
3
10
2
10
1
10
V
= 5 V
= 10 kΩ
= 25°C
DD
R
L
T
A
0°
30°
60°
90°
120°
A
VD
Phase Shift
1
150°
180°
0.1
10
100
1 k
10 k
100 k
1 M
10 M
f – Frequency – Hz
Figure 32
†
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
26
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
†
TYPICAL CHARACTERISTICS
LARGE-SIGNAL DIFFERENTIAL VOLTAGE
AMPLIFICATION AND PHASE SHIFT
vs
FREQUENCY
7
10
6
10
5
10
4
10
3
10
2
10
1
10
V
= 10 V
DD
R
T
A
= 10 kΩ
= 25°C
L
0°
30°
60°
90°
120°
A
VD
Phase Shift
1
150°
180°
0.1
10
100
1 k
10 k
100 k
1 M
10 M
f – Frequency – Hz
Figure 33
PHASE MARGIN
vs
SUPPLY VOLTAGE
PHASE MARGIN
vs
FREE-AIR TEMPERATURE
53°
52°
50°
48°
46°
44°
42°
V
= 5 V
DD
V = 10 mV
I
C
= 20 pF
L
51°
50°
See Figure 3
49°
48°
47°
V = 10 mV
I
C
T
= 20 pF
= 25°C
L
A
See Figure 3
46°
45°
40°
0
2
4
6
8
10
12
14
16
–75 –50 –25
0
25
50
75 100 125
V
DD
– Supply Voltage – V
T
A
– Free-Air Temperature – °C
Figure 34
Figure 35
†
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
27
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
TYPICAL CHARACTERISTICS
PHASE MARGIN
vs
EQUIVALENT INPUT NOISE VOLTAGE
vs
CAPACITIVE LOAD
FREQUENCY
50°
45°
40°
35°
30°
25°
400
300
200
100
0
V
= 5 V
DD
V = 10 mV
V
= 5 V
= 20 Ω
= 25°C
DD
S
R
T
I
A
T
= 25°C
A
See Figure 3
See Figure 2
0
10 20 30 40 50 60 70 80 90 100
1
10
100
f – Frequency – Hz
1000
C
– Capacitive Load – pF
L
Figure 36
Figure 37
28
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
APPLICATION INFORMATION
single-supply operation
While the TLC272 and TLC277 perform well using dual power supplies (also called balanced or split supplies),
the design is optimized for single-supply operation. This design includes an input common-mode voltage range
that encompasses ground as well as an output voltage range that pulls down to ground. The supply voltage
range extends down to 3 V (C-suffix types), thus allowing operation with supply levels commonly available for
TTL and HCMOS; however, for maximum dynamic range, 16-V single-supply operation is recommended.
Many single-supply applications require that a voltage be applied to one input to establish a reference level that
is above ground. A resistive voltage divider is usually sufficient to establish this reference level (see Figure 38).
The low input bias current of the TLC272 and TLC277 permits the use of very large resistive values toimplement
the voltage divider, thus minimizing power consumption.
TheTLC272andTLC277workwellinconjunctionwithdigitallogic;however, whenpoweringbothlineardevices
and digital logic from the same power supply, the following precautions are recommended:
1. Power the linear devices from separate bypassed supply lines (see Figure 39); otherwise, the linear
device supply rails can fluctuate due to voltage drops caused by high switching currents in the digital
logic.
2. Use proper bypass techniques to reduce the probability of noise-induced errors. Single capacitive
decoupling is often adequate; however, high-frequency applications may require RC decoupling.
V
DD
R4
R1
R2
–
+
V
I
R3
V
O
V
V
REF
DD
R1
R3
V
REF
R4
R2
V
(V
V )
V
R3
C
O
REF
I
REF
0.01 µF
Figure 38. Inverting Amplifier With Voltage Reference
–
Power
Supply
Logic
Logic
Logic
OUT
+
(a) COMMON SUPPLY RAILS
–
+
Power
Supply
Logic
Logic
Logic
OUT
(b) SEPARATE BYPASSED SUPPLY RAILS (preferred)
Figure 39. Common vs Separate Supply Rails
29
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
APPLICATION INFORMATION
input characteristics
The TLC272 and TLC277 are specified with a minimum and a maximum input voltage that, if exceeded at either
input, could cause the device to malfunction. Exceeding this specified range is a common problem, especially
in single-supply operation. Note that the lower range limit includes the negative rail, while the upper range limit
is specified at V
– 1 V at T = 25°C and at V
– 1.5 V at all other temperatures.
DD
A
DD
The use of the polysilicon-gate process and the careful input circuit design gives the TLC272 and TLC277 very
good input offset voltage drift characteristics relative to conventional metal-gate processes. Offset voltage drift
in CMOS devices is highly influenced by threshold voltage shifts caused by polarization of the phosphorus
dopant implanted in the oxide. Placing the phosphorus dopant in a conductor (such as a polysilicon gate)
alleviates the polarization problem, thus reducing threshold voltage shifts by more than an order of magnitude.
The offset voltage drift with time has been calculated to be typically 0.1 µV/month, including the first month of
operation.
Because of the extremely high input impedance and resulting low bias current requirements, the TLC272 and
TLC277 are well suited for low-level signal processing; however, leakage currents on printed-circuit boards and
sockets can easily exceed bias current requirements and cause a degradation in device performance. It is good
practice to include guard rings around inputs (similar to those of Figure 4 in the Parameter Measurement
Information section). These guards should be driven from a low-impedance source at the same voltage level
as the common-mode input (see Figure 40).
Unused amplifiers should be connected as grounded unity-gain followers to avoid possible oscillation.
noise performance
The noise specifications in operational amplifier circuits are greatly dependent on the current in the first-stage
differential amplifier. The low input bias current requirements of the TLC272 and TLC277 result in a very low
noise current, which is insignificant in most applications. This feature makes the devices especially favorable
over bipolar devices when using values of circuit impedance greater than 50 kΩ, since bipolar devices exhibit
greater noise currents.
–
+
–
+
–
+
V
I
OUT
OUT
OUT
V
I
V
I
(a) NONINVERTING AMPLIFIER
(b) INVERTING AMPLIFIER
(c) UNITY-GAIN AMPLIFIER
Figure 40. Guard-Ring Schemes
output characteristics
The output stage of the TLC272 and TLC277 is designed to sink and source relatively high amounts of current
(see typical characteristics). If the output is subjected to a short-circuit condition, this high current capability can
cause device damage under certain conditions. Output current capability increases with supply voltage.
All operating characteristics of the TLC272 and TLC277 are measured using a 20-pF load. The devices can
drive higher capacitive loads; however, as output load capacitance increases, the resulting response pole
occurs at lower frequencies, thereby causing ringing, peaking, or even oscillation (see Figure 41). In many
cases, adding a small amount of resistance in series with the load capacitance alleviates the problem.
30
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
APPLICATION INFORMATION
output characteristics (continued)
(b) C = 130 pF, R = NO LOAD
(a) C = 20 pF, R = NO LOAD
L
L
L
L
2.5 V
–
+
T
= 25°C
A
f = 1 kHz
= 1 V
V
O
V
IPP
V
I
C
L
–2.5 V
(d) TEST CIRCUIT
(c) C = 150 pF, R = NO LOAD
L
L
Figure 41. Effect of Capacitive Loads and Test Circuit
Although the TLC272 and TLC277 possess excellent high-level output voltage and current capability, methods
for boosting this capability are available, if needed. The simplest method involves the use of a pullup resistor
(R ) connected from the output to the positive supply rail (see Figure 42). There are two disadvantages to the
P
use of this circuit. First, the NMOS pulldown transistor N4 (see equivalent schematic) must sink a comparatively
large amount of current. In this circuit, N4 behaves like a linear resistor with an on resistance between
approximately 60 Ω and 180 Ω, depending on how hard the operational amplifier input is driven. With very low
values of R , a voltage offset from 0 V at the output occurs. Second, pullup resistor R acts as a drain load to
P
P
N4 and the gain of the operational amplifier is reduced at output voltage levels where N5 is not supplying the
output current.
31
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
APPLICATION INFORMATION
output characteristics (continued)
V
DD
R
V
I
+
–
P
I
I
P
V
O
C
F
R2
I
R1
V
R
L
L
–
V
O
+
– V
DD
+ I + I
P
O
R
=
p
I
F
L
I
= Pullup current required by
p
the operational amplifier
(typically 500 µA)
Figure 42. Resistive Pullup to Increase V
Figure 43. Compensation for Input Capacitance
OH
feedback
Operational amplifier circuits almost always employ feedback, and since feedback is the first prerequisite for
oscillation, some caution is appropriate. Most oscillation problems result from driving capacitive loads
(discussed previously) and ignoring stray input capacitance. A small-value capacitor connected in parallel with
the feedback resistor is an effective remedy (see Figure 43). The value of this capacitor is optimized empirically.
electrostatic discharge protection
The TLC272 and TLC277 incorporate an internal electrostatic discharge (ESD) protection circuit that prevents
functional failures at voltages up to 2000 V as tested under MIL-STD-883C, Method 3015.2. Care should be
exercised, however, when handling these devices as exposure to ESD may result in the degradation of the
device parametric performance. The protection circuit also causes the input bias currents to be temperature
dependent and have the characteristics of a reverse-biased diode.
latch-up
Because CMOS devices are susceptible to latch-up due to their inherent parasitic thyristors, the TLC272 and
TLC277 inputs and outputs were designed to withstand –100-mA surge currents without sustaining latch-up;
however, techniques should be used to reduce the chance of latch-up whenever possible. Internal protection
diodes should not, by design, be forward biased. Applied input and output voltage should not exceed the supply
voltage by more than 300 mV. Care should be exercised when using capacitive coupling on pulse generators.
Supply transients should be shunted by the use of decoupling capacitors (0.1 µF typical) located across the
supply rails as close to the device as possible.
The current path established if latch-up occurs is usually between the positive supply rail and ground and can
be triggered by surges on the supply lines and/or voltages on either the output or inputs that exceed the supply
voltage. Once latch-up occurs, the current flow is limited only by the impedance of the power supply and the
forward resistance of the parasitic thyristor and usually results in the destruction of the device. The chance of
latch-up occurring increases with increasing temperature and supply voltages.
32
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
APPLICATION INFORMATION
10 kΩ
10 kΩ
0.016 µF
0.016 µF
10 kΩ
–
V
I
10 kΩ
1/2
TLC272
+
5 V
–
10 kΩ
1/2
–
TLC272
+
1/2
TLC272
+
Low Pass
High Pass
Band Pass
5 kΩ
R = 5 kΩ(3/d-1) (see Note A)
NOTE A: d = damping factor, 1/Q
Figure 44. State-Variable Filter
12 V
H.P.
5082-2835
V
I
+
1/2
+
TLC272
1/2
TLC272
V
O
–
N.O.
Reset
0.5 µF
Mylar
–
100 kΩ
Figure 45. Positive-Peak Detector
33
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
APPLICATION INFORMATION
V
I
(see Note A)
100 kΩ
1 kΩ
1.2 kΩ
20 kΩ
0.47 µF
4.7 kΩ
0.1 µF
–
TL431
1/2
TLC272
+
TIP31
15 Ω
TIS193
250 µF,
+
25 V
–
V
O
(see Note B)
10 kΩ
47 kΩ
0.01 µF
22 kΩ
110 Ω
NOTES: A. V = 3.5 to 15 V
I
O
B.
V
= 2 V, 0 to 1 A
Figure 46. Logic-Array Power Supply
V
O
(see Note A)
9 V
0.1 µF
9 V
10 kΩ
10 kΩ
C
100 kΩ
1/2
–
TLC272
1/2
TLC272
+
R2
V
(see Note B)
1
O
100 kΩ
R1
fO
4C(R2) R3
R1
47 kΩ
R3
NOTES: A.
B.
V
V
= 8 V
= 4 V
O(PP)
O(PP)
Figure 47. Single-Supply Function Generator
34
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TLC272, TLC272A, TLC272B, TLC272Y, TLC277
LinCMOS PRECISION DUAL OPERATIONAL AMPLIFIERS
SLOS091B – OCTOBER 1987 – REVISED AUGUST 1994
APPLICATION INFORMATION
5 V
V –
I
+
10 kΩ
100 kΩ
1/2
TLC277
–
–
1/2
TLC277
+
V
O
10 kΩ
R1,10 kΩ
(see Note A)
–
10 kΩ
95 kΩ
1/2
TLC277
+
V +
I
–5 V
NOTE B: CMRR adjustment must be noninductive.
Figure 48. Low-Power Instrumentation Amplifier
5 V
–
1/2
TLC272
+
R
R
V
O
10 MΩ
10 MΩ
V
I
2C
540 pF
1
f
R/2
5 MΩ
NOTCH
2 RC
C
C
270 pF
270 pF
Figure 49. Single-Supply Twin-T Notch Filter
35
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
IMPORTANT NOTICE
Texas Instruments and its subsidiaries (TI) reserve the right to make changes to their products or to discontinue
any product or service without notice, and advise customers to obtain the latest version of relevant information
to verify, before placing orders, that information being relied on is current and complete. All products are sold
subject to the terms and conditions of sale supplied at the time of order acknowledgement, including those
pertaining to warranty, patent infringement, and limitation of liability.
TI warrants performance of its semiconductor products to the specifications applicable at the time of sale in
accordance with TI’s standard warranty. Testing and other quality control techniques are utilized to the extent
TI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily
performed, except those mandated by government requirements.
CERTAIN APPLICATIONS USING SEMICONDUCTOR PRODUCTS MAY INVOLVE POTENTIAL RISKS OF
DEATH, PERSONAL INJURY, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE (“CRITICAL
APPLICATIONS”). TI SEMICONDUCTOR PRODUCTS ARE NOT DESIGNED, AUTHORIZED, OR
WARRANTED TO BE SUITABLE FOR USE IN LIFE-SUPPORT DEVICES OR SYSTEMS OR OTHER
CRITICAL APPLICATIONS. INCLUSION OF TI PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO
BE FULLY AT THE CUSTOMER’S RISK.
In order to minimize risks associated with the customer’s applications, adequate design and operating
safeguards must be provided by the customer to minimize inherent or procedural hazards.
TI assumes no liability for applications assistance or customer product design. TI does not warrant or represent
that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other
intellectual property right of TI covering or relating to any combination, machine, or process in which such
semiconductor products or services might be or are used. TI’s publication of information regarding any third
party’s products or services does not constitute TI’s approval, warranty or endorsement thereof.
Copyright 1998, Texas Instruments Incorporated
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