LT1814CGN [Linear]
Dual/Quad 3mA, 100MHz, 750V/® Operational Amplifiers; 双核/四3mA电流，为100MHz ， 750V / ®运算放大器
| 型号： | LT1814CGN |
| 厂家： | 
Linear |
| 描述： | Dual/Quad 3mA, 100MHz, 750V/® Operational Amplifiers |
| 文件： | 总16页 (文件大小：241K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LT1813/LT1814
Dual/Quad 3mA, 100MHz,
750V/µs Operational Amplifiers
U
DESCRIPTIO
FEATURES
The LT®1813/LT1814 are dual and quad, low power, high
speed, very high slew rate operational amplifiers with
excellent DC performance. The LT1813/LT1814 feature
reduced supply current, lower input offset voltage, lower
input bias current and higher DC gain than other devices
with comparable bandwidth. The circuit topology is a
voltage feedback amplifier with the slewing characteris-
tics of a current feedback amplifier.
■
100MHz Gain Bandwidth Product
■
750V/µs Slew Rate
■
3.6mA Maximum Supply Current per Amplifier
Tiny 3mm x 3mm x 0.8mm DFN Package
■
■
8nV/√Hz Input Noise Voltage
Unity-Gain Stable
■
■
1.5mV Maximum Input Offset Voltage
■
4µA Maximum Input Bias Current
■
400nA Maximum Input Offset Current
Theoutputdrivesa100Ωloadto±3.5Vwith±5Vsupplies.
Onasingle5Vsupply,theoutputswingsfrom1.1Vto3.9V
with a 100Ω load connected to 2.5V. The amplifiers are
stable with a 1000pF capacitive load making them useful
in buffer and cable driver applications.
■
40mA Minimum Output Current, VOUT = ±3V
■
±3.5V Minimum Input CMR, VS = ±5V
■
30ns Settling Time to 0.1%, 5V Step
■
Specified at ±5V, Single 5V Supplies
■
Operating Temperature Range: –40°C to 85°C
U
The LT1813/LT1814 are manufactured on Linear
Technology’s advanced low voltage complementary bipo-
lar process. The LT1813 dual op amp is available in
8-pin MSOP, SO and 3mm x 3mm low profile (0.8mm)
dual fine pitch leadless packages (DFN). The quad LT1814
is available in 14-pin SO and 16-pin SSOP packages. A
single version, the LT1812, is also available (see separate
data sheet).
APPLICATIO S
■
Active Filters
■
Wideband Amplifiers
■
Buffers
Video Amplification
■
■
Communication Receivers
■
Cable Drivers
■
, LTC and LT are registered trademarks of Linear Technology Corporation.
Data Acquisition Systems
U
TYPICAL APPLICATIO
Bandpass Filter with Independently Settable Gain, Q and fC
R1
Filter Frequency Response
R
R
Q
R = 499Ω
R1 = 499Ω
V
V
= ±5V
S
C
R
G
0
= 5V
–
IN
P-P
V
IN
R
R
R
= 475Ω
= 49.9Ω
= 499Ω
DISTORTION:
2nd < –76dB
3rd < –90dB
ACROSS FREQ
RANGE
F
Q
G
R
–
1/4 LT1814
+
R
C
F
–
C = 3.3nF
1/4 LT1814
+
f
= 100kHz
C
BANDPASS
OUT
1/4 LT1814
+
Q = 10
GAIN = 1
R1
G
GAIN =
R
R1
Q
Q =
R
R
R
F
1
–
+
f
C
=
2πR C
F
1/4 LT1814
1k
10k
100k
1M
10M
FREQUENCY (Hz)
1814 TA02
1814 TA01
18134fa
1
LT1813/LT1814
W W
U W
ABSOLUTE AXI U RATI GS (Note 1)
Total Supply Voltage (V+ to V–)
Specified Temperature Range (Note 8).. –40°C to 85°C
Maximum Junction Temperature ......................... 150°C
(DD Package) ................................................... 125°C
Storage Temperature Range ................ –65°C to 150°C
(DD Package) ................................... –65°C to 125°C
Lead Temperature (Soldering, 10 sec)................. 300°C
LT1813/LT1814 ................................................ 12.6V
LT1813HV ........................................................ 13.5V
Differential Input Voltage (Transient Only, Note 2) .. ±6V
Input Voltage ............................................................±VS
Output Short-Circuit Duration (Note 3)........... Indefinite
Operating Temperature Range ................ –40°C to 85°C
U W
U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
ORDER PART
ORDER PART
NUMBER
NUMBER
+
TOP VIEW
OUT A
–IN A
+IN A
1
2
3
4
8
7
6
5
V
+
OUTA
–IN A
+IN A
1
2
3
4
8 V
OUT B
–IN B
+IN B
LT1813DDD*
LT1813CDD
LT1813IDD
LT1813DMS8*
A
7 OUT B
6 –IN B
5 +IN B
B
–
–
V
V
MS8 PACKAGE
8-LEAD PLASTIC MSOP
DD PACKAGE
8-LEAD (3mm × 3mm) PLASTIC DFN
MS8 PART MARKING
LTGZ
DD PART MARKING**
LAAQ
TJMAX = 150°C, θJA = 250°C/W
TJMAX = 125°C, θJA = 160°C/W
UNDERSIDE METAL
–
INTERNALLY CONNECTED TO V
TOP VIEW
TOP VIEW
OUT A
–IN A
+IN A
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
OUT D
–IN D
+IN D
OUT A
–IN A
+IN A
1
2
3
4
5
6
7
14
13
12
11
10
9
OUT D
–IN D
+IN D
TOP VIEW
–
D +
–
+
–
+
–
+
A
+
A
D
C
OUT A
–IN A
+IN A
1
2
3
4
8
7
6
5
V
+
–
V
V
OUT B
–IN B
+IN B
+
–
V
V
A
+
–
B
+IN B
–IN B
OUT B
NC
+IN C
–IN C
OUT C
NC
+
+
–
+IN B
–IN B
OUT B
+IN C
–IN C
OUT C
+
–
C
–
B
B
–
V
8
S8 PACKAGE
8-LEAD PLASTIC SO
S PACKAGE
14-LEAD PLASTIC SO
TJMAX = 150°C, θJA = 150°C/W
GN PACKAGE
16-LEAD PLASTIC SSOP
TJMAX = 150°C, θJA = 110°C/W
TJMAX = 150°C, θJA = 135°C/W
S8 PART
MARKING
ORDER PART
NUMBER
ORDER PART
NUMBER
ORDER PART
NUMBER
LT1814CS
LT1814IS
LT1814CGN
LT1814IGN
GN PART
MARKING
1814
LT1813DS8*
LT1813CS8
1813D
1813
LT1813IS8
1813I
LT1813HVDS8*
LT1813HVCS8
LT1813HVIS8
813HVD
1813HV
813HVI
1814I
Consult LTC marketing for parts specified with wider operating temperature ranges. *See Note 9.
**The temperature grades are identified by a label on the shipping container.
18134fa
2
LT1813/LT1814
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = ± 5V, VCM = 0V, unless otherwise noted. (Note 8)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
V
Input Offset Voltage (Note 4)
0.5
1.5
2
3
mV
mV
mV
OS
T = 0°C to 70°C
A
●
●
A
T = –40°C to 85°C
∆V
Input Offset Voltage Drift (Note 7)
Input Offset Current
T = 0°C to 70°C
A
●
●
10
10
15
30
µV/°C
µV/°C
OS
∆T
A
T = –40°C to 85°C
I
I
50
400
500
600
nA
nA
nA
OS
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
Input Bias Current
–0.9
±4
±5
±6
µA
µA
µA
B
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
e
Input Noise Voltage Density
Input Noise Current Density
Input Resistance
f = 10kHz
f = 10kHz
8
1
nV/√Hz
pA/√Hz
n
i
n
R
V
= 3.5V
CM
3
10
1.5
MΩ
MΩ
IN
Differential
C
V
Input Capacitance
2
pF
IN
Input Voltage Range
Guaranteed by CMRR
±3.5
±3.5
±4.2
V
V
CM
T = –40°C to 85°C
●
A
CMRR
Common Mode Rejection Ratio
V
= ±3.5V
75
73
72
85
dB
dB
dB
CM
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
Minimum Supply Voltage
Guaranteed by PSRR
T = –40°C to 85°C
±1.25
±2
±2
V
V
●
A
PSRR
Power Supply Rejection Ratio
V = ±2V to ±5.5V
78
76
75
97
dB
dB
dB
S
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
V = ±2V to ±6.5V (LT1813HV)
75
73
72
97
3
dB
dB
dB
S
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
A
V
Large-Signal Voltage Gain
V
V
= ±3V, R = 500Ω
1.5
1.0
0.8
V/mV
V/mV
V/mV
VOL
OUT
OUT
L
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
= ±3V, R = 100Ω
1.0
0.7
0.6
2.5
±4
V/mV
V/mV
V/mV
OUT
L
T = 0°C to 70°C
●
●
A
A
T = –40°C to 85°C
Maximum Output Swing
(Positive/Negative)
R = 500Ω, 30mV Overdrive
±3.8
±3.7
±3.6
V
V
V
L
T = 0°C to 70°C
T = –40°C to 85°C
●
●
A
A
R = 100Ω, 30mV Overdrive
±3.35
±3.25
±3.15
±3.5
V
V
V
L
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
18134fa
3
LT1813/LT1814
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = ±5V, VCM = 0V, unless otherwise noted. (Note 8)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
I
Maximum Output Current
V
= ±3V, 30mV Overdrive
OUT
A
T = –40°C to 85°C
A
±40
±35
±30
±60
mA
mA
mA
OUT
T = 0°C to 70°C
●
●
I
Output Short-Circuit Current
Slew Rate
V
= 0V, 1V Overdrive (Note 3)
±75
±60
±55
±100
mA
mA
mA
SC
OUT
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
SR
A = –1 (Note 5)
V
500
400
350
750
V/µs
V/µs
V/µs
T = 0°C to 70°C
T = –40°C to 85°C
●
●
A
A
FPBW
GBW
Full Power Bandwidth
6V (Note 6)
40
MHz
P-P
Gain Bandwidth Product
f = 200kHz, R = 500Ω
75
65
60
100
MHz
MHz
MHz
L
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
–3dB BW
–3dB Bandwidth
A = 1, R = 500Ω
200
2
MHz
ns
V
L
t , t
Rise Time, Fall Time
Propagation Delay (Note 10)
Overshoot
A = 1, 10% to 90%, 0.1V, R = 100Ω
V L
r
f
t
A = 1, 50% to 50%, 0.1V, R = 100Ω
V
2.8
25
ns
PD
L
OS
A = 1, 0.1V, R = 100Ω
%
V
L
t
Settling Time
A = –1, 0.1%, 5V
V
30
ns
S
THD
dG
Total Harmonic Distortion
Differential Gain
A = 2, f = 1MHz, V
= 2V , R = 500Ω
–76
0.12
0.07
0.4
100
dB
%
V
OUT
P-P
L
A = 2, V
= 2V , R = 150Ω
P-P L
V
OUT
OUT
dP
Differential Phase
Output Resistance
Channel Separation
A = 2, V
V
= 2V , R = 150Ω
DEG
Ω
P-P
L
R
OUT
A = 1, f = 1MHz
V
V
= ±3V, R = 100Ω
82
81
80
dB
dB
dB
OUT
L
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
I
Supply Current
Per Amplifier
T = 0°C to 70°C
3
3.6
4.5
5.0
mA
mA
mA
S
●
●
A
T = –40°C to 85°C
A
Per Amplifier,V = ±6.5V, (LT1813HV only)
4.0
5.0
5.5
mA
mA
mA
S
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
18134fa
4
LT1813/LT1814
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = 5V, VCM = 2.5V, RL to 2.5V, unless otherwise noted. (Note 8)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
V
Input Offset Voltage (Note 4)
0.7
2.0
2.5
3.5
mV
mV
mV
OS
T = 0°C to 70°C
A
●
●
A
T = –40°C to 85°C
∆V
Input Offset Voltage Drift (Note 7)
Input Offset Current
T = 0°C to 70°C
A
●
●
10
10
15
30
µV/°C
µV/°C
OS
∆T
A
T = –40°C to 85°C
I
I
50
400
500
600
nA
nA
nA
OS
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
Input Bias Current
–1
±4
±5
±6
µA
µA
µA
B
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
e
Input Noise Voltage Density
Input Noise Current Density
Input Resistance
f = 10kHz
f = 10kHz
8
1
nV/√Hz
pA/√Hz
n
i
n
R
V
= 3.5V
CM
3
10
1.5
MΩ
MΩ
IN
Differential
C
V
Input Capacitance
2
pF
IN
Input Voltage Range
(Positive)
Guaranteed by CMRR
3.5
3.5
4.2
V
V
CM
T = –40°C to 85°C
●
●
A
Input Voltage Range
(Negative)
Guaranteed by CMRR
T = –40°C to 85°C
A
0.8
82
1.5
1.5
V
V
CMRR
Common Mode Rejection Ratio
V
= 1.5V to 3.5V
73
71
70
dB
dB
dB
CM
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
Minimum Supply Voltage
Large-Signal Voltage Gain
Guaranteed by PSRR
T = –40°C to 85°C
2.5
2
4
4
V
V
●
A
A
V
V
= 1.5V to 3.5V, R = 500Ω
1.0
0.7
0.6
V/mV
V/mV
V/mV
VOL
OUT
OUT
L
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
V
= 1.5V to 3.5V, R = 100Ω
0.7
0.5
0.4
1.5
4.1
3.9
0.9
1.1
V/mV
V/mV
V/mV
OUT
L
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
Maximum Output Swing
(Positive)
R = 500Ω, 30mV Overdrive
3.9
3.8
3.7
V
V
V
L
T = 0°C to 70°C
T = –40°C to 85°C
●
●
A
A
R = 100Ω, 30mV Overdrive
3.7
3.6
3.5
V
V
V
L
T = 0°C to 70°C
T = –40°C to 85°C
●
●
A
A
Maximum Output Swing
(Negative)
R = 500Ω, 30mV Overdrive
1.1
1.2
1.3
V
V
V
L
T = 0°C to 70°C
T = –40°C to 85°C
●
●
A
A
R = 100Ω, 30mV Overdrive
1.3
1.4
1.5
V
V
V
L
T = 0°C to 70°C
T = –40°C to 85°C
●
●
A
A
18134fa
5
LT1813/LT1814
ELECTRICAL CHARACTERISTICS
The ● denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. VS = 5V, VCM = 2.5V, RL to 2.5V, unless otherwise noted. (Note 8)
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX UNITS
I
Maximum Output Current
V
= 1.5V or 3.5V, 30mV Overdrive
OUT
±25
±20
±17
± 35
mA
mA
mA
OUT
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
I
Output Short-Circuit Current
Slew Rate
V
= 2.5V, 1V Overdrive (Note 3)
T = 0°C to 70°C
T = –40°C to 85°C
±55
±45
±40
±75
mA
mA
mA
SC
OUT
●
●
A
A
SR
A = –1 (Note 5)
200
150
125
350
V/µs
V/µs
V/µs
V
T = 0°C to 70°C
T = –40°C to 85°C
●
●
A
A
FPBW
GBW
Full Power Bandwidth
2V (Note 6)
55
94
MHz
P-P
Gain Bandwidth Product
f = 200kHz, R = 500Ω
65
55
50
MHz
MHz
MHz
L
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
–3dB BW
–3dB Bandwidth
A = 1, R = 500Ω
180
2.1
3
MHz
ns
V
L
t , t
r
Rise Time, Fall Time
Propagation Delay (Note 10)
Overshoot
A = 1, 10% to 90%, 0.1V, R = 100Ω
V L
f
t
A = 1, 50% to 50%, 0.1V, R = 100Ω
V
ns
PD
L
OS
A = 1, 0.1V, R = 100Ω
25
%
V
L
t
Settling Time
A = –1, 0.1%, 2V
V
30
ns
S
THD
dG
Total Harmonic Distortion
Differential Gain
A = 2, f = 1MHz, V
= 2V , R = 500Ω
–75
0.22
0.21
0.45
100
dB
%
V
OUT
P-P
L
A = 2, V
= 2V , R = 150Ω
P-P L
V
OUT
OUT
dP
Differential Phase
Output Resistance
Channel Separation
A = 2, V
V
= 2V , R = 150Ω
DEG
Ω
P-P
L
R
OUT
A = 1, f = 1MHz
V
V
= 1.5V to 3.5V, R = 100Ω
81
80
79
dB
dB
dB
OUT
L
T = 0°C to 70°C
●
●
A
T = –40°C to 85°C
A
I
Supply Current
Per Amplifier
T = 0°C to 70°C
2.9
4.0
5.0
5.5
mA
mA
mA
S
●
●
A
T = –40°C to 85°C
A
Note 1: Absolute Maximum Ratings are those values beyond which the life
Note 7: This parameter is not 100% tested
of the device may be impaired.
Note 8: The LT1813C/LT1814C are guaranteed to meet specified
performance from 0°C to 70°C and is designed, characterized and
expected to meet the extended temperature limits, but is not tested at
–40°C and 85°C. The LT1813I/LT1814I are guaranteed to meet the
extended temperature limits.
Note 2: Differential inputs of ±6V are appropriate for transient operation
only, such as during slewing. Large sustained differential inputs can cause
excessive power dissipation and may damage the part.
Note 3: A heat sink may be required to keep the junction temperature
below absolute maximum when the output is shorted indefinitely.
Note 4: Input offset voltage is pulse tested and is exclusive of warm-up
drift.
Note 9: The LT1813D is 100% production tested at 25°C. It is designed,
characterized and expected to meet the 0°C to 70°C specifications
although it is not tested or QA sampled at these temperatures. The
LT1813D is guaranteed functional from –40°C to 85°C but may not meet
those specifications.
Note 10: Propagation delay is measured from the 50% point on the input
waveform to the 50% point on the output waveform.
Note 5: Slew rate is measured between ±2V at the output with ±3V input
for ±5V supplies and 2V at the output with a 3V input for single 5V
P-P
P-P
supplies.
Note 6: Full power bandwidth is calculated from the slew rate:
FPBW = SR/2πV
P
18134fa
6
LT1813/LT1814
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Input Common Mode Range vs
Input Bias Current
vs Common Mode Voltage
Supply Voltage
Supply Current vs Temperature
+
0
–0.5
–1.0
–1.5
–2.0
5
4
3
2
1
0
V
T
= 25°C
= ± 5V
A
S
PER AMPLIFIER
–0.5
–1.0
–1.5
–2.0
V
V
= ± 5V
S
V
S
= ± 2.5V
T
= 25°C
OS
A
∆V < 1mV
2.0
1.5
1.0
0.5
–
V
0
2.5
–5.0
5.0
–2.5
–50 –25
0
25
50
75 100 125
0
2
3
4
5
6
7
1
TEMPERATURE (°C)
SUPPLY VOLTAGE (± V)
INPUT COMMON MODE VOLTAGE (V)
1813/14 G03
1813/14 G01
1813/14 G02
Open-Loop Gain
vs Resistive Load
Input Bias Current vs Temperature
Input Noise Spectral Density
–0.6
–0.7
–0.8
–0.9
100
10
1
10
75.0
72.5
70.0
67.5
65.0
62.5
60
T
= 25°C
V
S
= ± 5V
T
A
= 25°C
A
V
A
= ± 5V
= 101
= 10k
S
V
S
R
V
V
= ± 5V
S
S
i
n
1
e
n
= ± 2.5V
–1.0
–1.1
–1.2
0.1
100k
50
TEMPERATURE (°C)
100 125
–50 –25
0
25
75
100
1k
LOAD RESISTANCE (Ω)
10k
10
100
1k
FREQUENCY (Hz)
10k
1813/14 G06
1813/14 G05
1813/14 G04
Output Voltage Swing
vs Load Current
Output Voltage Swing
vs Supply Voltage
Open-Loop Gain vs Temperature
+
+
V
75.0
72.5
70.0
67.5
V
V
V
= ± 5V
= 30mV
85°C
T
= 25°C
IN
V
S
V
O
= ± 5V
= ± 3V
S
IN
A
–0.5
–1.0
–1.5
–2.0
–0.5
–1.0
–1.5
–2.0
V
= 30mV
R
= 500Ω
L
25°C
– 40°C
R
R
= 500Ω
= 100Ω
R
= 100Ω
L
L
L
2.0
1.5
1.0
0.5
2.0
1.5
1.0
0.5
65.0
62.5
60.0
R
= 100Ω
L
R
= 500Ω
L
–
–
V
V
50
100 125
4
7
–60
–40
0
20
–50 –25
0
25
75
0
2
3
5
–20
40
60
1
6
SUPPLY VOLTAGE (± V)
TEMPERATURE (°C)
OUTPUT CURRENT (mA)
1813/14 G07
1813/14 G02
1813/14 G09
18134fa
7
LT1813/LT1814
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Output Short-Circuit Current
vs Temperature
Settling Time vs Output Step
Output Impedance vs Frequency
5
4
120
110
100
90
100
10
V
S
= ± 5V
A
V
= 100
A
SOURCE
3
= 10
A
2
V
1
= 1
1
V
0
SINK
–1
–2
–3
–4
–5
0.1
V
A
= ± 5V
S
V
F
= –1
0.01
0.001
R = 500Ω
C = 3pF
F
0.1% SETTLING
T
= 25°C
= ± 5V
A
S
V
80
0
10
15
20
25
30
35
–50 –25
0
25
50
75 100 125
5
10k
100k
1M
FREQUENCY (Hz)
10M
100M
TEMPERATURE (°C)
SETTLING TIME (ns)
1813/14 G12
1813/14 G11
1813/14 G10
Gain Bandwidth and Phase
Margin vs Temperature
Gain and Phase vs Frequency
Crosstalk vs Frequency
115
105
95
70
60
50
40
30
20
10
0
120
100
80
0
R = 500Ω
L
T
= 25°C
= 10
V
T
= 25°C
A
A
V
F
A
V
A
= –1
–10
–20
–30
–40
–50
–60
–70
–80
–90
= 0dBm
R
= R = 500Ω
G
IN
L
GBW
= ± 5V
R
= 100Ω
V
S
PHASE
GAIN
GBW
60
V
= ±2.5V
S
±2.5V ±5V
±5V
40
±2.5V
85
40
38
36
20
PHASE MARGIN
= ±5V
V
S
0
PHASE MARGIN
V
–20
–40
= ±2.5V
S
–10
–50 –25
0
25
50
75 100 125
10k
100k
1M
10M
100M 1000M
100k
1M
10M
100M
1000M
TEMPERATURE (°C)
FREQUENCY (Hz)
FREQUENCY (Hz)
1813/14 G13
1813/14 G14
1813/14 G15
Frequency Response
vs Supply Voltage, AV = 2
Frequency Response
vs Capacitive Load, AV = –1
Frequency Response
vs Supply Voltage, AV = 1
12
8
6
4
2
0
8
6
C = 1000pF
L
T
A
V
= 25°C
= –1
T
= 25°C
= 2
T
= 25°C
A
V
S
A
V
L
A
V
A
A
= 1
C = 500pF
L
V
= ±2.5V
S
= ±5V
R
= 100Ω
NO R
L
R = R = 500Ω
NO R
F
G
C = 200pF
L
4
L
C = 100pF
L
V
= ±5V
S
4
–2
–4
2
C = 50pF
L
V
= ±2.5V
V = ±5V
S
S
0
C = 0
L
0
–6
–8
–2
–4
–6
–4
–8
–10
–12
–14
1
10M
100M 200M
1M
10M
100M
500M
1M
10M
100M
500M
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
1813/14 G18
1813/14 G17
1813/14 G16
18134fa
8
LT1813/LT1814
U W
TYPICAL PERFOR A CE CHARACTERISTICS
Power Supply Rejection Ratio
vs Frequency
Gain Bandwidth and Phase
Margin vs Supply Voltage
Common Mode Rejection Ratio
vs Frequency
100
80
60
40
20
0
100
80
60
40
20
0
110
90
T
A
V
= 25°C
= 1
= ±5V
A
V
S
T
= 25°C
V = ±5V
S
T
= 25°C
A
A
GBW
R
R
= 500Ω
L
L
–PSRR
GBW
= 100Ω
+PSRR
70
45
40
35
PHASE MARGIN
R
= 100Ω
L
PHASE MARGIN
= 500Ω
R
L
1k
10k
100k
1M
10M
100M
1k
10k
100k
1M
10M
100M
1
2
4
5
6
7
0
3
FREQUENCY (Hz)
FREQUENCY (Hz)
SUPPLY VOLTAGE (±V)
1813/14 G20
1813/14 G21
1813/14 G19
Slew Rate vs Input Level
Slew Rate vs Supply Voltage
Slew Rate vs Supply Voltage
1000
900
800
700
600
500
400
300
200
100
0
450
400
350
300
250
200
1200
1000
800
T
A
V
=25°C
= –1
= V
T
A
V
=25°C
= –1
V
IN
T
A
V
=25°C
= –1
A
V
IN
F
A
A
V
S
+
SR
/2
= ±1V
= ±5V
S(TOTAL)
R = R = R = 500Ω
R = R = R = 500Ω
–
R = R = R = 500Ω
G
L
F
G
L
F
G
L
SR
+
SR
+
–
–
SR
SR
SR
600
400
200
0
2
3
4
5
6
7
0
2
3
4
5
7
1
1
6
0
2
3
4
5
6
7
8
1
SUPPLY VOLTAGE (±V)
SUPPLY VOLTAGE (±V)
INPUT LEVEL (V
)
P-P
1813/14 G22
1813/14 G23
1813/14 G24
Undistorted Output Swing
vs Frequency
Total Harmonic Distortion + Noise
vs Frequency
Slew Rate vs Temperature
9
8
7
6
5
4
3
2
1
0
0.01
1100
1000
900
800
700
600
500
400
300
200
A
= –1
= 1
+
V
SR
V
= ± 5V
S
–
A
A
= –1
V
SR
= ± 5V
V
V
S
0.005
A
= 1
V
0.002
0.001
T
= 25°C
= ± 5V
= 2V
A
S
O
–
SR
V = ±2.5V
S
V = ± 5V
S
V
V
R
= 100Ω
L
P-P
+
SR
V
= ±2.5V
2% MAX DISTORTION
1M
FREQUENCY (Hz)
R
= 500Ω
S
L
100k
10M
100M
10
100
1k
FREQUENCY (Hz)
10k
100k
–50 –25
0
75 100 125
25
50
TEMPERATURE (°C)
1813/14 G27
1813/14 G26
1813/14 G25
18134fa
9
LT1813/LT1814
TYPICAL PERFOR A CE CHARACTERISTICS
U W
2nd and 3rd Harmonic Distortion
vs Frequency
Differential Gain and Phase
vs Supply Voltage
Capacitive Load Handling
100
90
0.5
0.4
0.3
0.2
0.1
0
–30
–40
–50
–60
–70
–80
–90
–100
T
= 25°C
= ±5V
S
A
V
V
= 2
= ±5V
= 2V
A
V
S
O
V
DIFFERENTIAL GAIN
R
= 150Ω
L
P-P
80
2ND HARMONIC
= 100Ω
A
= 1
V
DIFFERENTIAL GAIN
= 1k
70
R
L
R
L
60
50
3RD HARMONIC
= 100Ω
R
0.5
0.4
0.3
0.2
0.1
0
L
A
= –1
V
DIFFERENTIAL PHASE
= 150Ω
40
30
20
10
0
R
L
3RD HARMONIC
= 500Ω
R
L
DIFFERENTIAL PHASE
= 1k
2ND HARMONIC
R
L
R
= 500Ω
L
10
100
1000
10000
100k
1M
10M
4
8
10
12
6
FREQUENCY (Hz)
TOTAL SUPPLY VOLTAGE (V)
CAPACITIVE LOAD (pF)
1813/14 G28
1813/14 G30
1813/14 G29
Small-Signal Transient
(AV = 1, CL = 100pF)
Small-Signal Transient (AV = 1)
Small-Signal Transient (AV = –1)
1813/14 G31
1813/14 G32
1813/14 G33
Large-Signal Transient
(AV = –1, CL = 200pF)
Large-Signal Transient (AV = 1)
Large-Signal Transient (AV = –1)
1813/14 G34
1813/14 G35
1813/14 G36
18134fa
10
LT1813/LT1814
W U U
APPLICATIO S I FOR ATIO
U
Layout and Passive Components
series resistance for protection. This differential input
voltage generates a large internal current (up to 40mA),
which results in the high slew rate. In normal transient
closed-loop operation, this does not increase power dis-
sipation significantly because of the low duty cycle of the
transient inputs. Sustained differential inputs, however,
will result in excessive power dissipation and therefore
this device should not be used as a comparator.
The LT1813/LT1814 amplifiers are more tolerant of less
than ideal board layouts than other high speed amplifiers.
For optimum performance, a ground plane is recom-
mendedandtracelengthsshouldbeminimized,especially
on the negative input lead.
Low ESL/ESR bypass capacitors should be placed directly
at the positive and negative supply pins (0.01µF ceramics
are recommended). For high drive current applications,
additional 1µF to 10µF tantalums should be added.
Capacitive Loading
The LT1813/LT1814 are stable with capacitive loads from
0pF to 1000pF, which is outstanding for a 100MHz ampli-
fier. The internal compensation circuitry accomplishes
this by sensing the load induced output pole and adding
compensation at the amplifier gain node as needed. As the
capacitive load increases, both the bandwidth and phase
margin decrease so there will be peaking in the frequency
domain and ringing in the transient response. Coaxial
cable can be driven directly, but for best pulse fidelity a
resistor of value equal to the characteristic impedance of
the cable (e.g., 75Ω) should be placed in series with the
output. The receiving end of the cable should be termi-
nated with the same value resistance to ground.
The parallel combination of the feedback resistor and gain
setting resistor on the inverting input combine with the
input capacitance to form a pole that can cause peaking or
even oscillations. If feedback resistors greater than 1k are
used, a parallel capacitor of value:
CF > RG • CIN/RF
should be used to cancel the input pole and optimize
dynamic performance. For applications where the DC
noise gain is 1 and a large feedback resistor is used, CF
should be greater than or equal to CIN. An example would
be an I-to-V converter.
Input Considerations
Slew Rate
The inputs of the LT1813/LT1814 amplifiers are con-
nected to the base of an NPN and PNP bipolar transistor in
parallel. The base currents are of opposite polarity and
provide first order bias current cancellation. Due to
variationinthematchingofNPNandPNPbeta,thepolarity
of the input bias current can be positive or negative. The
offset current, however, does not depend on beta match-
ingandistightlycontrolled.Therefore,theuseofbalanced
source resistance at each input is recommended for
applications where DC accuracy must be maximized. For
example, with a 100Ω source resistance at each input, the
400nA maximum offset current results in only 40µV of
extra offset, while without balance the 4µA maximum
input bias current could result in a 0.4mV offset contribu-
tion.
The slew rate of the LT1813/LT1814 is proportional to the
differential input voltage. Highest slew rates are therefore
seen in the lowest gain configurations. For example, a 5V
output step in a gain of 10 has a 0.5V input step, whereas
in unity gain there is a 5V input step. The LT1813/LT1814
is tested for a slew rate in a gain of –1. Lower slew rates
occur in higher gain configurations.
Power Dissipation
The LT1813/LT1814 combine two or four amplifiers with
high speed and large output drive in a small package. It is
possible to exceed the maximum junction temperature
specification under certain conditions. Maximum junction
temperature (TJ) is calculated from the ambient tempera-
ture (TA) and power dissipation (PD) as follows:
The inputs can withstand differential input voltages of up
to 6V without damage and without needing clamping or
TJ = TA + (PD • θJA)
18134fa
11
LT1813/LT1814
W U U
U
APPLICATIO S I FOR ATIO
Power dissipation is composed of two parts. The first is
due to the quiescent supply current and the second is due
to on-chip dissipation caused by the load current. The
worst-case load induced power occurs when the output
voltage is at 1/2 of either supply voltage (or the maximum
swingiflessthan1/2thesupplyvoltage).ThereforePDMAX
is:
Complementary followers form an output stage that buff-
ers the gain node from the load. The input resistor, input
stage transconductance, and the capacitor on the high
impedance node determine the bandwidth. The slew rate
is determined by the current available to charge the gain
node capacitance. This current is the differential input
voltage divided by R1, so the slew rate is proportional to
the input step. Highest slew rates are therefore seen in the
lowest gain configurations.
P
DMAX = (V+ – V–) • (ISMAX) + (V+/2)2/RL or
PDMAX =(V+ –V–)•(ISMAX)+(V+–VOMAX)•(VOMAX/RL)
Example: LT1814S at 70°C, VS = ±5V, RL=100Ω
PDMAX = (10V) • (4.5mA) + (2.5V)2/100Ω = 108mW
TJMAX = 70°C + (4 • 108mW) • (100°C/W) = 113°C
The RC network across the output stage is bootstrapped
when the amplifier is driving a light or moderate load and
has no effect under normal operation. When a heavy load
(capacitive or resistive) is driven, the network is incom-
pletely bootstrapped and adds to the compensation at the
high impedance node. The added capacitance moves the
unity-gain frequency away from the pole formed by the
output impedance and the capacitive load. The zero cre-
ated by the RC combination adds phase to ensure that the
total phase lag does not exceed 180° (zero phase margin),
and the amplifier remains stable. In this way, the LT1813/
LT1814 are stable with up to 1000pF capacitive loads in
unity gain, and even higher capacitive loads in higher
closed-loop gain configurations.
Circuit Operation
The LT1813/LT1814 circuit topology is a true voltage
feedback amplifier that has the slewing behavior of a
currentfeedbackamplifier.Theoperationofthecircuitcan
be understood by referring to the Simplified Schematic.
ComplementaryNPNandPNPemitterfollowersbufferthe
inputs and drive an internal resistor. The input voltage
appears across the resistor, generating current that is
mirrored into the high impedance node.
W
W
(one amplifier)
SI PLIFIED SCHE ATIC
+
V
C
C
+IN
R
C
R1
OUT
–IN
C
–
V
1814 SS
18134fa
12
LT1813/LT1814
U
TYPICAL APPLICATIO
Filter Frequency Response
10
0
4MHz, 4th Order Butterworth Filter
–10
–20
232Ω
274Ω
–30
–40
47pF
232Ω
665Ω
–
–50
–60
–70
–80
–90
V
IN
22pF
274Ω
562Ω
–
1/2 LT1813
+
220pF
V
V
= ±5V
V
S
1/2 LT1813
470pF
OUT
= 600mV
P-P
+
IN
PEAKING < 0.12dB
1813/14 TA01
0.1
1
10
100
FREQUENCY (MHz)
1813/14 TA02
Gain of 20 Composite Amplifier Drives Differential Load with Low Distortion
10k
499Ω
499Ω
1k
–
LOAD
68pF
1/4 LT1814
–
–
+
+
1/4 LT1814
+
1/4 LT1814
800Ω
9k
–
68pF
1/4 LT1814
+
GAIN = 20
–3dB BANDWIDTH = 10MHz
V
IN
DISTORTION = –77dB AT 2MHz,
499Ω
499Ω
1k
R
L
= 1k
1814 TA03
18134fa
13
LT1813/LT1814
U
PACKAGE DESCRIPTIO
DD Package
8-Lead Plastic DFN (3mm × 3mm)
(Reference LTC DWG # 05-08-1698)
R = 0.115
0.38 ± 0.10
TYP
5
8
0.675 ±0.05
3.5 ±0.05
2.15 ±0.05 (2 SIDES)
1.65 ±0.05
3.00 ±0.10
(4 SIDES)
1.65 ± 0.10
(2 SIDES)
PIN 1
TOP MARK
PACKAGE
OUTLINE
(DD8) DFN 0203
4
1
0.28 ± 0.05
0.75 ±0.05
0.200 REF
0.28 ± 0.05
0.50 BSC
0.50
BSC
2.38 ±0.05
(2 SIDES)
2.38 ±0.10
(2 SIDES)
0.00 – 0.05
BOTTOM VIEW—EXPOSED PAD
NOTE:
RECOMMENDED SOLDER PAD PITCH AND DIMENSIONS
1. DRAWING TO BE MADE A JEDEC PACKAGE OUTLINE M0-229 VARIATION OF (WEED-1)
2. ALL DIMENSIONS ARE IN MILLIMETERS
3. DIMENSIONS OF EXPOSED PAD ON BOTTOM OF PACKAGE DO NOT INCLUDE
MOLD FLASH. MOLD FLASH, IF PRESENT, SHALL NOT EXCEED 0.15mm ON ANY SIDE
4. EXPOSED PAD SHALL BE SOLDER PLATED
MS8 Package
8-Lead Plastic MSOP
(Reference LTC DWG # 05-08-1660)
0.889 ± 0.127
(.035 ± .005)
5.23
(.206)
MIN
3.2 – 3.45
(.126 – .136)
3.00 ± 0.102
(.118 ± .004)
(NOTE 3)
0.52
(.206)
REF
0.65
(.0256)
BSC
0.42 ± 0.04
(.0165 ± .0015)
TYP
8
7 6
5
RECOMMENDED SOLDER PAD LAYOUT
3.00 ± 0.102
(.118 ± .004)
NOTE 4
4.90 ± 0.15
(1.93 ± .006)
DETAIL “A”
0.254
(.010)
0° – 6° TYP
GAUGE PLANE
1
2
3
4
0.53 ± 0.015
(.021 ± .006)
1.10
(.043)
MAX
0.86
(.034)
REF
DETAIL “A”
0.18
(.077)
SEATING
PLANE
0.22 – 0.38
(.009 – .015)
TYP
0.13 ± 0.076
(.005 ± .003)
0.65
(.0256)
BSC
MSOP (MS8) 0802
NOTE:
1. DIMENSIONS IN MILLIMETER/(INCH)
2. DRAWING NOT TO SCALE
3. DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS.
MOLD FLASH, PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
4. DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.152mm (.006") PER SIDE
5. LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.102mm (.004") MAX
18134fa
14
LT1813/LT1814
U
PACKAGE DESCRIPTIO
S8 Package
8-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
.189 – .197
(4.801 – 5.004)
.045 ±.005
NOTE 3
.050 BSC
7
5
8
6
.245
MIN
.160 ±.005
.150 – .157
(3.810 – 3.988)
NOTE 3
.228 – .244
(5.791 – 6.197)
.030 ±.005
TYP
1
3
4
2
RECOMMENDED SOLDER PAD LAYOUT
.010 – .020
(0.254 – 0.508)
× 45°
.053 – .069
(1.346 – 1.752)
.004 – .010
(0.101 – 0.254)
.008 – .010
(0.203 – 0.254)
0°– 8° TYP
.016 – .050
(0.406 – 1.270)
.050
(1.270)
BSC
.014 – .019
(0.355 – 0.483)
TYP
NOTE:
INCHES
1. DIMENSIONS IN
(MILLIMETERS)
2. DRAWING NOT TO SCALE
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
SO8 0303
S Package
14-Lead Plastic Small Outline (Narrow .150 Inch)
(Reference LTC DWG # 05-08-1610)
.337 – .344
.045 ±.005
(8.560 – 8.738)
.050 BSC
NOTE 3
13
12
11
10
8
14
N
9
N
1
.245
MIN
.160 ±.005
.150 – .157
(3.810 – 3.988)
NOTE 3
.228 – .244
(5.791 – 6.197)
2
3
N/2
N/2
.030 ±.005
TYP
RECOMMENDED SOLDER PAD LAYOUT
7
1
2
3
4
5
6
.010 – .020
(0.254 – 0.508)
× 45°
.053 – .069
(1.346 – 1.752)
.004 – .010
(0.101 – 0.254)
.008 – .010
(0.203 – 0.254)
0° – 8° TYP
.050
(1.270)
BSC
.014 – .019
(0.355 – 0.483)
TYP
.016 – .050
(0.406 – 1.270)
S14 0502
NOTE:
INCHES
(MILLIMETERS)
2. DRAWING NOT TO SCALE
1. DIMENSIONS IN
3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm)
18134fa
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tationthattheinterconnectionofitscircuitsasdescribedhereinwillnotinfringeonexistingpatentrights.
15
LT1813/LT1814
U
TYPICAL APPLICATIO
Two Op Amp Instrumentation Amplifier
R5
220Ω
R4
10k
R1
10k
R2
1k
R3
1k
–
1/2
LT1813
–
1/2
LT1813
+
+
V
OUT
–
V
IN
+
⎡
⎤
⎥
R2 + R3
⎡
⎢
⎣
⎤
⎥
⎦
⎛
⎞ ⎛
⎞
(
)
R4
R3
1
2
R2 R3
R1 R4
⎢
GAIN =
1+
+
+
= 102
⎜
⎟ ⎜
⎟
⎢
⎣
⎥
⎦
R5
⎝
⎠ ⎝
⎠
TRIM R5 FOR GAIN
1813/14 TA03
TRIM R1 FOR COMMON MODE REJECTION
BW = 1MHz
U
PACKAGE DESCRIPTIO
GN Package
.189 – .196*
(4.801 – 4.978)
16-Lead Plastic SSOP (Narrow .150 Inch)
.045 ±.005
(Reference LTC DWG # 05-08-1641)
.009
(0.229)
REF
16 15 14 13 12 11 10 9
.254 MIN
.150 – .165
.229 – .244
.150 – .157**
(5.817 – 6.198)
(3.810 – 3.988)
.0165 ± .0015
.0250 TYP
RECOMMENDED SOLDER PAD LAYOUT
1
2
3
4
5
6
7
8
NOTE:
.015 ± .004
(0.38 ± 0.10)
1. CONTROLLING DIMENSION: INCHES
× 45°
.053 – .068
(1.351 – 1.727)
.004 – .0098
(0.102 – 0.249)
INCHES
2. DIMENSIONS ARE IN
(MILLIMETERS)
.007 – .0098
(0.178 – 0.249)
0° – 8° TYP
3. DRAWING NOT TO SCALE
*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH
SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD
FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE
.016 – .050
(0.406 – 1.270)
.0250
(0.635)
BSC
.008 – .012
(0.203 – 0.305)
GN16 (SSOP) 0502
RELATED PARTS
PART NUMBER
DESCRIPTION
COMMENTS
±2.5V to ±15V Operation
LT1363/LT1364/LT1365 Single/Dual/Quad 70MHz, 1000V/µs, C-LoadTM Op Amps
LT1395/LT1396/LT1397 Single/Dual/Quad 400MHz Current Feedback Amplifiers
4.6mA Supply Current, 800V/µs, 80mA Output Current
Low Noise 3.5nV/√Hz
LT1806/LT1807
LT1809/LT1810
LT1812
Single/Dual 325MHz, 140V/µs Rail-to-Rail I/O Op Amps
Single/Dual 180MHz, 350V/µs Rail-to-Rail I/O Op Amps
Single 3mA, 100MHz, 750V/µs Op Amp
Low Distortion –90dBc at 5MHz
Single Version of LT1813/LT1814; 50µA Shutdown Option
6.5mA Supply Current, 6nV/√Hz Input Noise
LT1815/LT1816/LT1817 Single/Dual/Quad 220MHz, 1500V/µs Op Amps
C-Load is a trademark of Linear Technology Corporation.
18134fa
LT/TP 0503 1K REV A • PRINTED IN THE USA
LinearTechnology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
16
●
●
© LINEAR TECHNOLOGY CORPORATION 2001
(408) 432-1900 FAX: (408) 434-0507 www.linear.com
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