LT1190
Ultrahigh Speed
Operational Amplifier
FEATURES
DESCRIPTIO
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Gain Bandwidth Product, A = 1: 50MHz The LT 1190 is a video operational amplifier optimized for
V
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Slew Rate: 450V/m s operation on 5V, and a single 5V supply. Unlike many
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Low Cost high speed amplifiers, this amplifier features high open-
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Output Current: 50mA loop gain, over 85dB, and the ability to drive heavy loads
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Settling Time: 140ns to 0.1% to a full-power bandwidth of 20MHz at 7V . In addition
P-P
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Differential Gain Error: 0.1%, (R = 1k) to its very fast slew rate, the LT1190 features a unity-
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Differential Phase Error: 0.06 , (R = 1k) gain-stable bandwidth of 50MHz and a 75 phase margin,
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High Open-Loop Gain: 10V/mV Min making it extremely easy to use.
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Single Supply 5V Operation
Because the LT1190 is a true operational amplifier, it is an
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Output Shutdown
ideal choice for wideband signal conditioning, fast inte-
grators, active filters, and applications requiring speed,
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accuracy and low cost.
APPLICATIO S
The LT1190 is available in 8-pin PDIP and SO packages
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Video Cable Drivers
with standard pinouts. The normally unused Pin 5 is used
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Video Signal Processing
for a shutdown feature that shuts off the output and
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Fast Integrators
reduces power dissipation to a mere 15mW.
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Pulse Amplifiers
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D/A Current to Voltage Conversion , LTC and LT are registered trademarks of Linear Technology Corporation.
TYPICAL APPLICATIO
Video MUX Cable Driver
5V
7
3
V +
IN1
Inverter Pulse Response
6
LT1190
SHDN
2
CMOS IN
5
CH. SELECT
4
5V 1k
1k
1k
75W CABLE
74HC04 74HC04
75W
1k
5V
5V
5
3
V
IN2 + 7
SHDN
6
LT1190
2
1190 TA02
4 A = 1, C = 10pF SCOPE PROBE
V L
5V
1k 1k
LT1190 TA01
1
U
ULT1190
UUW
ABSOLUTE AXI U RATI GS
PACKAGE/ORDER I FOR ATIO
(Note 1)
+
ORDER PART
Total Supply Voltage (V to V ) ............................. 18V
TOP VIEW
NUMBER
Differential Input Voltage ....................................... 6V
BAL 1 8 BAL
Input Voltage .......................................................... V
+
S
IN 2 7 V
LT1190CN8
Output Short-Circuit Duration (Note 2) ........ Continuous
+IN 3 6 OUT
LT1190CS8
Maximum Junction Temperature ......................... 150 C
V SHDN
4 5
Operating Temperature Range S8 PART MARKING
N8 PACKAGE S8 PACKAGE
LT1190M (OBSOLETE) ............. 55 C to 125 C
8-LEAD PDIP 8-LEAD PLASTIC SO
1190
LT1190C............................................... 0 C to 70 C
T = 150 C, q = 100 C/W (N8)
JMAX JA
T = 150 C, q = 150 C/W (S8)
JMAX JA
LT1190MJ8
Storage Temperature Range ................. 65 C to 150 C
LT1190CJ8
Lead Temperature (Soldering, 10 sec)................. 300 C J8 PACKAGE 8-LEAD CERDIP
T = 150 C, q = 100 C/W
JMAX JA
OBSOLETE PACKAGE
Consider the N8 or S8 Packages for Alternate Source
Consult LTC Marketing for parts specified with wider operating temperature
ranges.
ELECTRICAL CHARACTERISTICS V = 5V, T = 25 C, C 10pF, Pin 5 open circuit unless otherwise noted.
S A L
LT1190M/C
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
V Input Offset Voltage N8 Package 3 10 mV
OS
SO-8 Package 15 mV
I Input Offset Current 0.2 1.7 m A
OS
I Input Bias Current 0.5 2.5 m A
B
e Input Noise Voltage f = 10kHz 50 nV/ Hz
n O
i Input Noise Current f = 10kHz 4 pA/ Hz
n O
R Input Resistance Differential Mode 130 kW
IN
Common Mode 5 MW
C Input Capacitance A = 1 2.2 pF
IN V
Input Voltage Range (Note 3) 2.5 3.5 V
CMRR Common Mode Rejection Ratio V = 2.5V to 3.5V 60 70 dB
CM
PSRR Power Supply Rejection Ratio V = 2.375V to 8V 60 70 dB
S
A Large-Signal Voltage Gain R = 1k, V = 3V 10 22 V/mV
VOL L O
R = 100W , V = 3V 2.5 6 V/mV
L O
V = 8V, R = 100W , V = 5V 3.5 12 V/mV
S L O
V Output Voltage Swing V = 5V, R = 1k 3.7 4V
OUT S L
V = 8V, R = 1k 6.7 7V
S L
SR Slew Rate A = 1, R = 1k (Notes 4, 9) 325 450 V/m s
V L
FPBW Full-Power Bandwidth V = 6V (Note 5) 17.2 23.9 MHz
O P-P
GBW Gain Bandwidth Product 50 MHz
t , t Rise Time, Fall Time A = 50, V = 1.5V, 20% to 80%, (Note 9) 175 250 325 ns
r1 f1 V O
t , t Rise Time, Fall Time A = 1, V = 125mV, 10% to 90% 1.9 ns
r2 f2 V O
t Propagation Delay A = 1, V = 125mV, 50% to 50% 2.4 ns
PD V O
Overshoot A = 1, V = 125mV 5 %
V O
t Settling Time 3V Step, 0.1% (Note 6) 140 ns
s
2
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