LT1097
Low Cost, Low Power
Precision Op Amp
FEATURES
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DESCRIPTION
LT
®
1097 achieves a new standard in combining low price
and outstanding precision performance.
On all operational amplifier data sheets, the specifications
listed on the front page are for highly selected, expensive
grades, while the specs for the low cost grades are buried
deep in the data sheet.
The LT1097 does not have any selected grades, the
outstanding specifications shown in the Features section
are for its only grade.
The design effort of the LT1097 concentrated on optimiz-
ing the performance of all precision specs—at only 350µA
of supply current. Typical values are 10µV offset voltage,
40pA bias and offset currents, 0.2µV/°C and 0.4pA/°C
drift. Common mode and power supply rejections, voltage
gain are typically in excess of 128dB.
All parameters that are important for precision, low power
op amps have been optimized. Consequently, using the
LT1097 error budget calculations in most applications is
unnecessary.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Offset Voltage
50µV Max
Offset Voltage Drift
1µV/°C Max
Bias Current
250pA Max
Offset Current
250pA Max
Bias and Offset Current Drift
4pA/°C Max
Supply Current
560µA Max
0.1Hz to 10Hz Noise
0.5µVp-p, 2.2pAp-p
CMRR
115dB Min
Voltage Gain
117dB Min
PSRR
114dB Min
Guaranteed Operation on Two NiCad Batteries
APPLICATIONS
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Replaces OP-07/OP-77/OP-97/OP-177/AD707/
LT1001 with Improved Price/Performance
High Impedance Difference Amplifiers
Logarithmic Amplifiers (Wide Dynamic Range)
Thermocouple Amplifiers
Precision Instrumentation
Active Filters (with Small Capacitors)
TYPICAL APPLICATION
Saturated Standard Cell Amplifier
9V
2N3609
3
7
LT1097
2
OUT = 1.1V TO 8.0V
AS 1.8k
≤
R2
≤
135k
PERCENT OF UNITS
Input Offset Voltage Distribution
50
6,500 UNITS IN SO PACKAGE
6,680 UNITS IN
PLASTIC
V
S
=
±15V
DIP
T
A
= 25°C
13,180 UNITS
TESTED
+
–
40
6
+
1.018235V
SATURATED
STANDARD
CELL #101
EPPLEY LABS
NEWPORT, R. I.
30
4
20
R1
20k
R2
THE TYPICAL 40pA BIAS CURRENT OF THE LT1097
WILL DEGRADE THE STANDARD CELL BY ONLY
1ppm/YEAR. NOISE IS A FRACTION OF A ppm.
UNPROTECTED GATE MOSFET ISOLATES
STANDARD CELL ON POWER DOWN.
LT1097•TA01
10
0
–50 –40 –30 –20 –10 0 10 20 30 40 50
INPUT OFFSET VOLTAGE (µV)
LT1097 • G01
U
U
U
1
LINER [ LINEAR TECHNOLOGY ]
