OP37AJGB [TI]
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| 型号： | OP37AJGB |
| 厂家： | 
TEXAS INSTRUMENTS |
| 描述： | 暂无描述 运算放大器 |
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OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B – FEBRUARY 1989 – REVISED AUGUST 1994
JG OR P PACKAGE
• Direct Replacements for PMI and LTC OP27
(TOP VIEW)
and OP37 Series
Features of OP27A, OP27C, OP37A, and
OP37C:
V
TRIM
IN–
IN +
V
V
OUT
NC
TRIM
1
2
3
4
8
7
6
5
IO
IO
CC+
• Maximum Equivalent Input Noise Voltage:
3.8 nV/√Hz at 1 kHz
V
CC –
5.5 nV/√Hz at 10 kHz
• Very Low Peak-to-Peak Noise Voltage at
FK PACKAGE
(TOP VIEW)
0.1 Hz to 10 Hz . . . 80 nV Typ
• Low Input Offset Voltage . . . 25 µV Max
• High Voltage Amplification . . . 1 V/µV Min
Feature of OP37 Series:
• Minimum Slew Rate . . . 11 V/µs
3
2
1
20 19
18
NC
NC
1N–
NC
4
5
6
7
8
description
V
17
16
15
14
CC+
The OP27 and OP37 operational amplifiers
combine outstanding noise performance with
excellent precision and high-speedspecifications.
The wideband noise is only 3 nV/√Hz and with the
1/f noise corner at 2.7 Hz, low noise is maintained
for all low-frequency applications.
NC
OUT
NC
IN+
NC
9 10 11 12 13
The outstanding characteristics of the OP27 and
OP37 make these devices excellent choices
for low-noise amplifier applications requiring
precision performance and reliability. Additionally,
the OP37 is free of latch-up in high-gain,
large-capacitive-feedback configurations.
NC – No internal connection
symbol
3
+
IN+
IN –
The OP27 series is compensated for unity gain.
The OP37 series is decompensated for increased
bandwidth and slew rate and is stable down to a
gain of 5.
6
OUT
2
–
1
8
V
IO
TRIM
The OP27A, OP27C, OP37A, and OP37C are
characterized for operation over the full military
temperature range of –55°C to 125°C. The
OP27E, OP27G, OP37E, and OP37G are
characterized for operation from – 25°C to 85°C.
Pin numbers are for the JG and P packages.
AVAILABLE OPTIONS
PACKAGE
V
max
STABLE
GAIN
IO
T
A
CERAMIC DIP
(JG)
CHIP CARRIER
(FK)
PLASTIC DIP
AT 25°C
(P)
OP27EP
OP37EP
OP27GP
OP37GP
—
1
5
1
5
1
5
1
5
—
—
—
25 µV
—
–25°C to 85°C
–55°C to 125°C
—
—
—
100 µV
25 µV
—
OP27AJG
OP37AJG
OP27CJG
OP37CJG
OP27AFK
OP37AFK
—
—
—
100 µV
—
—
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.
2–1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
schematic
V
IO
TRIM
V
IO
TRIM
V
CC +
750
µA
260
µA
480 µA
Q6
†
C1
Q22
Q20
Q46
Q21
Q23
Q24
Q1A
Q19
OUT
IN +
IN –
Q1B Q2B
Q2A
Q3
Q45
Q11
Q26
Q12
Q27
Q28
340
µA
240 µA
120
µA
V
CC –
†
C1 = 120 pF for OP27
C1 = 15 pF for OP37
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B – FEBRUARY 1989 – REVISED AUGUST 1994
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)
Supply voltage, V
Supply voltage, V
(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 V
(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 22 V
CC+
CC–
Input voltage, V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
V
I
CC±
Duration of output short circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . unlimited
Differential input current (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±25 mA
Continuous power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating free-air temperature range: OP27A, OP27C, OP37A, OP37C . . . . . . . . . . . . . . . – 55°C to 125°C
OP27E, OP27G, OP37E, OP37G . . . . . . . . . . . . . . . – 25°C to 85°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: JG or FK package . . . . . . . . . . . . . . 300°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds : P package . . . . . . . . . . . . . . . . . . . . 260°C
NOTES: 1. All voltage values are with respect to the midpoint between V
CC+
and V
unless otherwise noted.
CC–
2. The inputs are protected by back-to-back diodes. Current-limiting resistors are not used in order to achieve low noise. Excessive
input current will flow if a differential input voltage in excess of approximately ± 0.7 V is applied between the inputs unless some
limiting resistance is used.
DISSIPATION RATING TABLE
T
≤ 25°C
DERATING FACTOR
T
= 85°C
T = 125°C
A
A
A
PACKAGE
POWER RATING
ABOVE T = 25°C
POWER RATING POWER RATING
A
JG
FK
P
1050 mW
1375 mW
1000 mW
8.4 mW/°C
11.0 mW/°C
8.0 mW/°C
546 mW
715 mW
520 mW
210 mW
275 mW
N/A
2–3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B – FEBRUARY 1989 – REVISED AUGUST 1994
recommended operating conditions
OP27A, OP37A
OP27C, OP37C
MIN NOM MAX
UNIT
MIN NOM
MAX
Supply voltage, V
Supply voltage, V
4
–4
15
22
4
–4
15
22
V
V
CC+
CC–
–15
–22
–15
–22
V
V
= ± 15 V,
= ± 15 V,
T
= 25°C
± 11
± 11
CC±
A
Common-mode input voltage, V
V
IC
T
A
= – 55°C to 125°C ±10.3
±10.2
–55
CC±
Operating free-air temperature, T
–55
125
125
°C
A
electrical characteristics at specified free-air temperature, V
= ±15 V (unless otherwise noted)
CC±
OP27A, OP37A
OP27C, OP37C
†
PARAMETER
TEST CONDITIONS
UNIT
T
A
MIN
TYP
MAX
MIN
TYP
MAX
25°C
10
25
60
30
100
300
V
R
= 0,
V
= 0
O
S
IC
= 50 Ω, See Note 3
V
IO
Input offset voltage
µV
Full range
Average temperature
coefficient of input
offset voltage
α
Full range
0.2
0.6
0.4
1.8 µV/°C
VIO
Long-term drift of input
offset voltage
See Note 4
0.2
7
1
0.4
12
2
µV/mo
25°C
Full range
25°C
35
50
75
135
I
I
Input offset current
Input bias current
V
= 0,
= 0,
V
V
= 0
= 0
nA
IO
O
O
IC
±10
±40
±60
±15
±80
V
nA
IB
IC
Full range
±150
11
to
11
to
25°C
–11
–11
Common-mode input
voltage range
V
V
A
V
ICR
10.3
to
–10.3
10.5
to
–10.5
Full range
R
R
R
R
R
R
≥ 2 kΩ
≥ 0.6 kΩ
≥ 2 kΩ
≥ 2 kΩ,
≥ 1 kΩ,
±12 ±13.8
±10 ±11.5
±11.5 ±13.5
±10 ±11.5
10.5
L
L
L
L
L
Peak output voltage swing
V
OM
Full range ±11.5
V
V
= ±10 V
= ±10 V
1000
800
1800
1500
700
1500
1500
O
O
Large-signal differential
voltage amplification
V/mV
≥ 0.6 kΩ, V = ±1 V,
VD
L
O
250
700
200
300
500
V
CC±
= ± 4 V
R
≥ 2 kΩ,
V
O
= ±10 V
Full range
600
L
Common-mode input
resistance
r
r
3
2
GΩ
i(CM)
Output resistance
V
V
V
V
V
= 0,
I
= 0
O
25°C
25°C
70
70
Ω
o
O
= ±11 V
= ±10 V
114
110
100
96
126
100
94
120
Common-mode rejection
ratio
IC
CMRR
dB
dB
Full range
25°C
IC
= ±4 V to ±18 V
120
94
118
Supply voltage rejection
ratio
CC±
CC±
k
SVR
= ±4.5 V to ±18 V
Full range
86
†
Full range is – 55°C to 125°C.
NOTES: 3. Input offset voltage measurements are performed by automatic test equipment approximately 0.5 seconds after applying power.
4. Long-term drift of input offset voltage refers to the average trend line of offset voltage versus time over extended periods after the
first 30 days of operation. Excluding the initial hour of operation, changes in V during the first 30 days are typically 2.5 µV
IO
(see Figure 3).
2–4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B – FEBRUARY 1989 – REVISED AUGUST 1994
recommended operating conditions
MIN NOM
MAX
22
UNIT
V
Supply voltage, V
Supply voltage, V
4
–4
15
CC+
CC –
–15
–22
V
V
V
= ±15 V,
= ±15 V,
T
= 25°C
±11
CC±
A
Common-mode input voltage, V
V
IC
T
A
= – 55°C to 125°C
±10.5
–25
CC±
Operating free-air temperature, T
85
°C
A
electrical characteristics at specified free-air temperature, V
= ±15 V (unless otherwise noted)
±
CC
OP27E, OP37E
OP27G, OP37G
†
PARAMETER
TEST CONDITIONS
UNIT
T
A
MIN
TYP
MAX
MIN
TYP
MAX
25°C
10
25
60
30
100
220
V
R
= 0,
V
= 0
O
S
IC
= 50 Ω, See Note 3
V
IO
Input offset voltage
µV
Full range
Average temperature
coefficient of input
offset voltage
αV
Full range
0.2
0.6
0.4
1.8 µV/°C
IO
Long-term drift of input
offset voltage
See Note 4
0.2
7
1
0.4
12
2
µV/mo
25°C
Full range
25°C
35
50
75
135
I
I
Input offset current
Input bias current
V
= 0,
= 0,
V
V
= 0
= 0
nA
IO
O
O
IC
±10
±40
±60
±15
±80
V
nA
IB
IC
Full range
±150
11
to
11
to
25°C
–11
–11
Common-mode input
voltage range
V
V
A
V
ICR
10.3
to
–10.3
10.5
to
–10.5
Full range
R
R
R
R
R
R
≥ 2 kΩ
≥ 0.6 kΩ
≥ 2 kΩ
≥ 2 kΩ,
≥ 1 kΩ,
±12 ±13.8
±10 ±11.5
±11.5 ±13.5
±10 ±11.5
10.5
L
L
L
L
L
Peak output voltage swing
V
OM
Full range
Full range
±11.5
1000
V
V
= ±10 V
= ±10 V
1800
1500
700
1500
1500
O
800
250
600
O
Large-signal differential
voltage amplification
V/mV
≥ 0.6 kΩ, V = ±1 V,
VD
L
O
700
200
450
500
V
CC±
= ± 4 V
R
≥ 2 kΩ,
V
O
= ± 10 V
L
Common-mode input
resistance
r
r
3
2
GΩ
i(CM)
Output resistance
V
V
V
V
V
= 0,
I
= 0
O
25°C
25°C
70
70
Ω
o
O
= ±11 V
= ±10 V
114
110
100
96
126
100
96
120
Common-mode rejection
ratio
IC
CMRR
dB
dB
Full range
25°C
IC
= ± 4 V to ±18 V
120
94
118
Supply voltage rejection
ratio
CC±
CC±
k
SVR
= ± 4.5 V to ±18 V
Full range
90
†
Full range is – 25°C to 85°C.
NOTES: 3. Input offset voltage measurements are performed by automatic test equipment approximately 0.5 seconds after applying power.
4. Long-term drift of input offset voltage refers to the average trend line of offset voltage versus time over extended periods after the
first 30 days of operation. Excluding the initial hour of operation, changes in V during the first 30 days are typically 2.5 µV
IO
(see Figure 3).
2–5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B – FEBRUARY 1989 – REVISED AUGUST 1994
OP27 operating characteristics over operating free-air temperature range, V
= ±15 V
CC±
OP27A, OP27E
OP27C, OP27G
PARAMETER
TEST CONDITIONS
≥ 1, ≥ 2 kΩ
UNIT
MIN
TYP
MAX
MIN
1.7
TYP
MAX
SR
Slew rate
A
VD
R
1.7
2.8
2.8
V/µs
µV
L
Peak-to-peak equivalent
input noise voltage
f = 0.1 Hz to 10 Hz, R = 20 Ω,
S
V
0.08
0.18
0.09
0.25
N(PP)
n
See Figure 34
f = 10 Hz,
R
R
R
= 20 Ω
= 20 Ω
= 20 Ω
3.5
3.1
3
5.5
4.5
3.8
4
3.8
3.3
3.2
1.5
1
8
5.6
4.5
S
S
S
V
Equivalent input noise voltage f = 30 Hz,
nV/√Hz
f = 1 kHz,
f = 10 Hz,
See Figure 35
See Figure 35
See Figure 35
1.5
1
I
n
Equivalent input noise current f = 30 Hz,
f = 1 kHz,
2.3
0.6
pA/√Hz
0.4
8
0.4
8
0.6
Gain-bandwidth product
f = 100 kHz
5
5
MHz
OP37 operating characteristics over operating free-air temperature range, V
= ±15 V
CC±
OP37A, OP37E
OP37C, OP37G
PARAMETER
TEST CONDITIONS
≥ 5, ≥ 2 kΩ
UNIT
MIN
TYP MAX
MIN
11
TYP MAX
SR
Slew rate
A
VD
R
11
17
17
V/µs
µV
L
Peak-to-peak equivalent
input noise voltage
f = 0.1 Hz to 10 Hz, R = 20 Ω,
S
V
0.08
0.18
0.09
0.25
N(PP)
n
See Figure 34
f = 10 Hz,
f = 30 Hz,
f = 1 kHz,
f = 10 Hz,
R
R
R
= 20 Ω
= 20 Ω
= 20 Ω
3.5
3.1
3
5.5
4.5
3.8
4
3.8
3.3
3.2
1.5
1
8
5.6
4.5
S
S
S
Equivalent input noise
voltage
V
nV/√Hz
See Figure 35
See Figure 35
See Figure 35
1.5
1
I
n
Equivalent input noise current f = 30 Hz,
f = 1 kHz,
2.3
0.6
pA/√Hz
0.4
63
40
0.4
63
40
0.6
f = 10 kHz
45
45
Gain-bandwidth product
MHz
A
V
≥ 5,
f = 1 MHz
2–6
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B – FEBRUARY 1989 – REVISED AUGUST 1994
TYPICAL CHARACTERISTICS
Table of Graphs
FIGURE
V
IO
Input offset voltage
vs Temperature
1
vs Time after power on
vs Time (long-term drift)
2
3
∆V
Change in input offset voltage
IO
I
I
Input offset current
vs Temperature
vs Temperature
vs Supply voltage
vs Load resistance
vs Frequency
4
5
IO
Input bias current
IB
V
V
V
Common-mode input voltage range
Maximum peak output voltage
Maximum peak-to-peak output voltage
6
ICR
7
OM
8, 9
O(PP)
vs Supply voltage
vs Load resistance
vs Frequency
10
11
12, 13, 14
A
VD
Differential voltage amplification
CMRR Common-mode rejection ratio
vs Frequency
vs Frequency
15
16
k
Supply voltage rejection ratio
SVR
vs Temperature
vs Supply voltage
vs Load resistance
17
18
19
SR
Slew rate
φ
Phase margin
Phase shift
vs Temperature
vs Frequency
20, 21
12, 13
m
φ
vs Bandwidth
22
23
24
25
26
vs Source resistance
vs Supply voltage
vs Temperature
vs Frequency
V
n
Equivalent input noise voltage
I
Equivalent input noise current
Gain-bandwidth product
Short-circuit output current
Supply current
vs Frequency
vs Temperature
vs Time
27
20, 21
28
n
I
I
OS
vs Supply voltage
29
CC
Small signal
Large signal
30, 32
31, 33
Pulse response
2–7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B – FEBRUARY 1989 – REVISED AUGUST 1994
†
TYPICAL CHARACTERISTICS
INPUT OFFSET VOLTAGE OF
REPRESENTATIVE INDIVIDUAL UNITS
vs
WARM-UP CHANGE IN
INPUT OFFSET VOLTAGE
vs
FREE-AIR TEMPERATURE
ELAPSED TIME
100
80
V
CC±
= ±15 V
V
T
A
= ±15 V
CC±
= 25°C
OP27C/37C
OP27A/37A
60
10
OP27CP/GP
OP37CP/GP
OP27A/37A
40
20
0
OP27E/37E
– 20
– 40
– 60
– 80
– 100
5
OP27G/37G
OP27AP/EP
OP37AP/EP
OP27C/37C
0
– 50 – 25
0
25
50
75
100
125
1
2
3
4
5
T
A
– Free-Air Temperature – °C
Time After Power On – minutes
Figure 1
Figure 2
LONG-TERM DRIFT OF INPUT OFFSET VOLTAGE OF
REPRESENTATIVE INDIVIDUAL UNITS
6
0.2-µV/mo Trend Line
4
2
0
– 2
– 4
0.2-µV/mo Trend Line
– 6
0
1
2
3
4
5
6
7
8
Time – months
Figure 3
†
Data for temperatures below – 25°C and above 85°C are applicable to the OP27A, OP27C, OP37A, and OP37C only.
2–8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B – FEBRUARY 1989 – REVISED AUGUST 1994
†
TYPICAL CHARACTERISTICS
INPUT OFFSET CURRENT
INPUT BIAS CURRENT
vs
vs
FREE-AIR TEMPERATURE
FREE-AIR TEMPERATURE
50
40
30
20
10
0
± 50
± 40
± 30
± 20
± 10
0
V
CC±
= ±15 V
V
CC±
= ±15 V
OP27C/G
OP37C/G
OP27C/G
OP37C/G
OP27A/E
OP37A/E
OP27A/E
OP37A/E
– 75 – 50 – 25
0
25
50
75
100 125
– 75 – 50 – 25
0
25
50
75 100 125
T
A
– Free-Air Temperature – °C
T
A
– Free-Air Temperature – °C
Figure 4
Figure 5
COMMON-MODE INPUT VOLTAGE RANGE LIMITS
MAXIMUM PEAK OUTPUT VOLTAGE
vs
SUPPLY VOLTAGE
16
vs
LOAD RESISTANCE
20
18
16
14
12
10
V
T
A
= ± 15 V
CC ±
= 25°C
T
A
= –55°C
12
8
T
A
= 25°C
Positive
Swing
4
T
A
= 125°C
Negative
Swing
0
8
6
– 4
– 8
– 12
– 16
T
= – 55°C
A
T
A
= 25°C
4
2
0
T
= 125°C
A
0
±5
±10
±15
±20
0.1
1
10
V
CC+
– Supply Voltage – V
R
– Load Resistance – kΩ
L
Figure 6
Figure 7
†
Data for temperatures below – 25°C and above 85°C are applicable to the OP27A, OP27C, OP37A, and OP37C only.
2–9
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B – FEBRUARY 1989 – REVISED AUGUST 1994
TYPICAL CHARACTERISTICS
OP37
OP27
MAXIMUM PEAK-TO-PEAK
OUTPUT VOLTAGE
vs
MAXIMUM PEAK-TO-PEAK
OUTPUT VOLTAGE
vs
FREQUENCY
FREQUENCY
28
24
20
16
12
8
28
24
20
16
12
8
V
R
T
A
= ± 15 V
V
= ± 15 V
CC ±
= 1 kΩ
CC ±
R = 1 kΩ
L
L
= 25°C
T = 25°C
A
4
4
0
1 k
0
10 k
10 k
100 k
1 M
10 M
100 k
1 M
10 M
f – Frequency – Hz
f – Frequency – Hz
Figure 8
Figure 9
OP27A, OP27E, OP37A, OP37E
LARGE-SIGNAL
OP27A, OP27E, OP37A, OP37E
LARGE-SIGNAL
DIFFERENTIAL VOLTAGE AMPLIFICATION
DIFFERENTIAL VOLTAGE AMPLIFICATION
vs
vs
TOTAL SUPPLY VOLTAGE
LOAD RESISTANCE
2500
2000
1500
2400
2200
2000
1800
1600
1400
V
T
= ± 10 V
= 25°C
V
V
T
A
= ± 15 V
O
A
CC ±
= ± 10 V
O
= 25°C
R
= 2 kΩ
L
R
= 1 kΩ
L
1000
500
0
1200
1000
800
600
400
1
10
0
10
– V
20
30
40
50
0.1
100
V
– Total Supply Voltage – V
R – Load Resistance – kΩ
L
CC+
CC –
Figure 10
Figure 11
2–10
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B – FEBRUARY 1989 – REVISED AUGUST 1994
TYPICAL CHARACTERISTICS
OP27
OP37
LARGE-SIGNAL DIFFERENTIAL
LARGE-SIGNAL DIFFERENTIAL
VOLTAGE AMPLIFICATION AND PHASE SHIFT
VOLTAGE AMPLIFICATION AND PHASE SHIFT
vs
vs
FREQUENCY
FREQUENCY
25
20
15
10
5
80°
60
80°
Phase Shift
V
R
=±15 V
V
R
T
A
= ±15 V
CC±
= 1 kΩ
CC±
= 1 kΩ
L
L
100°
120°
140°
160°
180°
200°
220°
50
40
100°
120°
140°
160°
180°
200°
220°
T = 25°C
A
= 25°C
Phase Shift
A
VD
φ
= 70°
30
m
φ
= 71°
m
20
0
10
A
VD
– 5
– 10
0
– 10
1
10
100
0.1
1
10
100
f – Frequency – Hz
f – Frequency – MHz
Figure 12
Figure 13
OP27A, OP27E, OP37A, OP37E
LARGE-SIGNAL
OP27A, OP27E, OP37A, OP37E
DIFFERENTIAL VOLTAGE AMPLIFICATION
COMMON-MODE REJECTION RATIO
vs
vs
FREQUENCY
FREQUENCY
140
120
100
80
140
V
V
T
A
= ±15 V
CC±
= ± 10 V
V
R
T
A
= ±15 V
CC±
= 2 kΩ
IC
= 25°C
L
= 25°C
120
100
80
OP37A/E
OP37A/E
60
40
OP27A/E
OP27A/E
20
60
0
–20
40
1 k
10 k
100 k
1 M
10 M
0.1
1
10 100 1 k 10 k
f – Frequency – Hz
1 M
100 M
f – Frenquency – Hz
Figure 14
Figure 15
2–11
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B – FEBRUARY 1989 – REVISED AUGUST 1994
†
TYPICAL CHARACTERISTICS
SUPPLY VOLTAGE REJECTION RATIO
vs
SLEW RATE
vs
FREQUENCY
FREE-AIR TEMPERATURE
160
140
120
100
80
20
18
16
14
12
10
8
V
R
= ±15 V
≥ 2 kΩ
CC±
L
V
T
= ±4 V to ±18 V
CC±
= 25°C
A
OP37
(A
≥ 5)
VD
Negative
Supply
60
6
40
4
Positive
Supply
20
2
OP27
(A
≥ 1)
VD
0
0
1
10
100 1 k 10 k 100 k 1 M 10 M 100 M
f – Frequency – Hz
– 50 – 25
0
25
50
75
100
125
T
A
– Free Air Temperature – °C
Figure 16
Figure 17
OP37
SLEW RATE
vs
OP37
SLEW RATE
vs
SUPPLY VOLTAGE
LOAD RESISTANCE
20
15
10
5
19
18
17
16
15
V
A
= ±15 V
= 5
A
R
T
A
= 5
= 2 kΩ
= 25°C
CC±
VD
L
Rise
VD
V
= 20 V
O(PP)
= 25°C
T
Fall
A
0
± 3
± 6
± 9
± 12
± 15
± 18
± 21
0.1
1
10
100
V
CC±
– Supply Voltage – V
f – Frequency – Hz
Figure 18
Figure 19
†
Data for temperatures below – 25°C and above 85°C are applicable to the OP27A, OP27C, OP37A, and OP37C only.
2–12
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B – FEBRUARY 1989 – REVISED AUGUST 1994
†
TYPICAL CHARACTERISTICS
OP27
OP37
PHASE MARGIN AND
GAIN-BANDWIDTH PRODUCT
vs
PHASE MARGIN AND
GAIN-BANDWIDTH PRODUCT
vs
FREE-AIR TEMPERATURE
FREE-AIR TEMPERATURE
80°
75°
70°
65°
60°
55°
50°
45°
40°
35°
30°
85°
80°
11
V
CC±
= ±15 V
V
CC±
= ±15 V
85
80
75
70
65
60
55
50
45
40
10.6
10.2
9.8
9.4
9
φ
m
75°
70°
φ
m
65°
60°
GBW (f = 10 kHz)
55°
50°
8.6
8.2
7.8
7.4
7
GBW (f = 100 kHz)
45°
40°
35°
– 75 – 50 – 25
0
25
50
75
100 125
– 50 – 25
0
25
50
75
100
125
T
A
– Free-Air Temperature – °C
T
A
– Free-Air Temperature – °C
Figure 20
Figure 21
EQUIVALENT INPUT NOISE VOLTAGE
TOTAL EQUIVALENT INPUT NOISE VOLTAGE
vs
vs
BANDWIDTH
SOURCE RESISTANCE
100
10
1
10
V
R
T
A
= ±15 V
R1
V
= ±15 V
CC±
= 20 Ω
CC±
BW = 1 Hz
= 25°C
–
+
S
= 25°C
T
A
R2
R
= R1 + R2
S
1
f = 10 Hz
f = 1 kHz
0.1
Resistor Noise Only
0.01
1 k
10 k
100
0.1
1
10
100
R
– Source Resistance – Ω
Bandwidth – kHz
(0.1 Hz to frequency indicated)
S
Figure 22
Figure 23
†
Data for temperatures below – 25°C and above 85°C are applicable to the OP27A, OP27C, OP37A, and OP37C only.
2–13
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B – FEBRUARY 1989 – REVISED AUGUST 1994
†
TYPICAL CHARACTERISTICS
OP27A, OP27E, OP37A, OP37E
EQUIVALENT INPUT NOISE VOLTAGE
vs
OP27A, OP27E, OP37A, OP37E
EQUIVALENT INPUT NOISE VOLTAGE
vs
TOTAL SUPPLY VOLTAGE
FREE-AIR TEMPERATURE
20
15
10
5
5
4
3
2
R
= 20 Ω
V
R
= ±15 V
S
CC±
= 20 Ω
BW = 1 Hz
T
A
S
= 25°C
BW = 1 Hz
f = 10 Hz
f = 1 kHz
f = 10 Hz
f = 1 kHz
0
1
0
10
– V
20
30
40
– 50 – 25
0
25
50
75
100
125
V
CC+
– Total Supply Voltage – V
T
A
– Free-Air Temperature – °C
CC–
Figure 24
Figure 25
OP27A, OP27E, OP37A, OP37E
EQUIVALENT INPUT NOISE CURRENT
EQUIVALENT INPUT NOISE VOLTAGE
vs
vs
FREQUENCY
FREQUENCY
10
10
9
8
V
R
= ±15 V
V
= ±15 V
CC±
= 20 Ω
CC±
BW = 1 Hz
T = 25°C
A
S
7
BW = 1 Hz
= 25°C
T
A
6
5
4
1
3
2
1/f Corner = 2.7 Hz
1/f Corner = 140 Hz
1
0.1
10
100
1 k
10 k
1
10
100
1000
f – Frequency – Hz
f – Frequency – Hz
Figure 26
Figure 27
†
Data for temperatures below – 25°C and above 85°C are applicable to the OP27A, OP27C, OP37A, and OP37C only.
2–14
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B – FEBRUARY 1989 – REVISED AUGUST 1994
†
TYPICAL CHARACTERISTICS
SHORT-CIRCUIT OUTPUT CURRENT
SUPPLY CURRENT
vs
vs
ELAPSED TIME
TOTAL SUPPLY VOLTAGE
60
50
40
30
20
10
5
4
3
2
1
V
T
A
= ± 15 V
CC±
= 25°C
T
= 125°C
A
I
I
OS–
OS+
T
= 25°C
A
T
= – 55°C
A
0
1
2
3
4
5
5
15
– V
25
35
45
t – Time – minutes
V
CC+
– Total Supply Voltage – V
CC–
Figure 28
Figure 29
OP27
OP27
VOLTAGE FOLLOWER
SMALL-SIGNAL
VOLTAGE FOLLOWER
LARGE-SIGNAL
PULSE RESPONSE
PULSE RESPONSE
80
60
8
6
4
2
0
40
20
0
– 20
– 40
– 60
– 80
– 2
– 4
– 6
– 8
V
= ±15 V
CC±
= 1
V
= ± 15 V
CC ±
= – 1
A
V
A
V
A
C
= 15 pF
= 25°C
L
T
= 25°C
T
A
0
0.5
1
1.5
2
2.5
3
0
2
4
6
8
10
12
t – Time – µs
t – Time – µs
Figure 30
Figure 31
†
Data for temperatures below – 25°C and above 85°C are applicable to the OP27A, OP27C, OP37A, and OP37C only.
2–15
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B – FEBRUARY 1989 – REVISED AUGUST 1994
TYPICAL CHARACTERISTICS
OP37
OP37
VOLTAGE-FOLLOWER
VOLTAGE-FOLLOWER
SMALL-SIGNAL PULSE RESPONSE
LARGE-SIGNAL PULSE RESPONSE
80
60
8
6
40
4
20
2
0
0
– 20
– 40
– 60
– 80
– 2
– 4
– 6
– 8
V
= ±15 V
CC±
= 5
V
= ±15 V
CC±
= 5
A
V
A
V
A
C
= 15 pF
= 25°C
L
T
= 25°C
T
A
0
0.2
0.4
0.6
0.8
1
1.2
0
1
2
3
4
5
6
t – Time – µs
t – Time – µs
Figure 32
Figure 33
APPLICATION INFORMATION
general
The OP27 and OP37 series devices can be inserted directly onto OP07, OP05, µA725, and SE5534 sockets
with or without removing external compensation or nulling components. In addition, the OP27 and OP37 can
be fitted to µA741 sockets by removing or modifying external nulling components.
noise testing
Figure 34 shows a test circuit for 0.1-Hz to 10-Hz peak-to-peak noise measurement of the OP27 and OP37. The
frequency response of this noise tester indicates that the 0.1-Hz corner is defined by only one zero. Because
the time limit acts as an additional zero to eliminate noise contributions from the frequency band below 0.1 Hz,
the test time to measure 0.1-Hz to 10-Hz noise should not exceed 10 seconds.
Measuring the typical 80-nV peak-to-peak noise performance of the OP27 and OP37 requires the following
special test precautions:
1. The device should be warmed up for at least five minutes. As the operational amplifier warms up, the
offset voltage typically changes 4 µV due to the chip temperature increasing from 10°C to 20°C starting
from the moment the power supplies are turned on. In the 10-s measurement interval, these
temperature-induced effects can easily exceed tens of nanovolts.
2. For similar reasons, the device should be well shielded from air currents to eliminate the possibility of
thermoelectric effects in excess of a few nanovolts, which would invalidate the measurements.
3. Sudden motion in the vicinity of the device should be avoided, as it produces a feedthrough effect that
increases observed noise.
2–16
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B – FEBRUARY 1989 – REVISED AUGUST 1994
APPLICATION INFORMATION
100
90
80
70
60
50
40
30
0.01
0.1
1
10
100
f – Frequency – Hz
0.1 µF
100 kΩ
10 Ω
LT1001
+
2 kΩ
22 µF
–
+
4.3 kΩ
2.2 µF
Oscilloscope
–
R
= 1 MΩ
Voltage
in
100 kΩ
Gain = 50,000
OP27/OP37
Device
Under
110 kΩ
4.7 µF
24.3 kΩ
0.1 µF
Test
NOTE: All capacitor values are for nonpolarized capacitors only.
Figure 34. 0.1-Hz to 10-Hz Peak-to-Peak Noise Test Circuit and Frequency Response
2–17
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B – FEBRUARY 1989 – REVISED AUGUST 1994
APPLICATION INFORMATION
When measuring noise on a large number of units, a noise-voltage density test is recommended. A 10-Hz
noise-voltage density measurement correlates well with a 0.1-Hz to 10-Hz peak-to-peak noise reading since
both results are determined by the white noise and the location of the 1/f corner frequency.
Figure 35 shows a circuit measuring current noise and the formula for calculating current noise.
10kΩ
100 Ω
500 kΩ
500 kΩ
2
2 1/2
– (130 nV) ]
–
+
[V
no
V
no
I =
n
1 MΩ × 100
Figure 35. Current Noise Test Circuit and Formula
offset voltage adjustment
The input offset voltage and temperature coefficient of the OP27 and OP37 are permanently trimmed to a low
level at wafer testing. However, if further adjustment of V is necessary, using a 10-kΩ nulling potentiometer
IO
as shown in Figure 36 does not degrade the temperature coefficient α
. Trimming to a value other than zero
VIO
creates an α
of V /300 µV/°C. For example, if V is adjusted to 300 µV, the change in α
is 1 µV/°C.
VIO
IO
IO
VIO
The adjustment range with a 10-kΩ potentiometer is approximately ±2.5 mV. If a smaller adjustment range is
needed, the sensitivity and resolution of the nulling can be improved by using a smaller potentiometer in
conjunction with fixed resistors. The example in Figure 37 has an approximate null range of ±200 µV.
4.7 kΩ
10 kΩ
1 kΩ
15 V
15 V
1
2
3
8
4.7 kΩ
–
+
7
6
Input
Output
1
2
3
8
4
4
7
6
Input
Output
–15 V
Figure 36. Standard Input Offset
Voltage Adjustment
–15 V
Figure 37. Input Offset Voltage Adjustment With
Improved Sensitivity
offset voltage and drift
Unless proper care is exercised, thermoelectric effects caused by temperature gradients across dissimilar
metals at the contacts to the input terminals can exceed the inherent temperature coefficient of the
V
IO
amplifier. Air currents should be minimized, package leads should be short, and the two input leads should be
close together and at the same temperature.
2–18
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B – FEBRUARY 1989 – REVISED AUGUST 1994
APPLICATION INFORMATION
offset voltage and drift (continued)
The circuit shown in Figure 38 measures offset voltage. This circuit can also be used as the burn-in configuration
for the OP27 and OP37 with the supply voltage increased to 20 V, R1 = R3 = 10 kΩ, R2 = 200 Ω, and
A
= 100.
VD
R1
50 kΩ
15 V
7
2
3
–
+
6
R2
100 Ω
V
O
= 1000 V
IO
4
R3
50 kΩ
–15 V
NOTE A: Resistors must have low thermoelectric potential.
Figure 38. Test Circuit for Offset Voltage and Offset Voltage
Temperature Coefficient
unity gain buffer applications
The resulting output waveform, when R ≤ 100 Ω and the input is driven with a fast large-signal pulse (> 1 V),
f
is shown in the pulsed-operation diagram in Figure 39.
R
f
2.8 V/µs
–
Output
+
OP27
Figure 39. Pulsed Operation
During the initial (fast-feedthrough-like) portion of the output waveform, the input protection diodes effectively
short the output to the input, and a current, limited only by the output short-circuit protection, is drawn by the
signal generator. When R ≥ 500 Ω, the output is capable of handling the current requirements (load
f
current ≤ 20 mA at 10 V), the amplifier stays in its active mode, and a smooth transition occurs. When
R > 2 kΩ, a pole is created with R and the amplifier’s input capacitance, creating additional phase shift and
f
f
reducing the phase margin. A small capacitor (20 pF to 50 pF) in parallel with R eliminates this problem.
f
2–19
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
OP27A, OP27C, OP27E, OP27G
OP37A, OP37C, OP37E, OP37G
LOW-NOISE HIGH-SPEED PRECISION OPERATIONAL AMPLIFIERS
SLOS100B – FEBRUARY 1989 – REVISED AUGUST 1994
APPLICATION INFORMATION
120
100
80
60
40
20
0
0
2
4
6
8
10
t – Time – seconds
Type S Thermocouples
5.4 µV/°C at 0°C
+
#1
Cold-Junction
Circuitry
–
+
To Gate
Drive
–
+
A
VD
= 10,000
#2
–
+
Output
100 kΩ
OP27
–
Typical
Multiplexing
0.05 µF
FET Switches
+
#24
–
High-Quality
Single-Point Ground
10 Ω
NOTE A: If 24 channels are multiplexed per second and the output is required to settle to 0.1 % accuracy, the amplifier’s bandwidth cannot be
limited to less than 30 Hz. The peak-to-peak noise contribution of the OP27 will still be only 0.11 µV, which is equivalent to an error
of only 0.02°C.
Figure 40. Low-Noise, Multiplexed Thermocouple Amplifier and 0.1-Hz To 10-Hz
Peak-to-Peak Noise Voltage
2–20
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251–1443
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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IC OP-AMP, 50 uV OFFSET-MAX, 63 MHz BAND WIDTH, CDIP8, HERMETIC SEALED, CERDIP-8, Operational Amplifier
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