LT1097 Datasheet, PDF (1/12 Pages) Linear Technology – Low Cost, Low Power Precision Op Amp

LT1097
Low Cost, Low Power
Precision Op Amp
FEATURES
s _{Offset Voltage}
50µV Max
s _{Offset Voltage Drift}
1µV/°C Max
s _{Bias Current}
250pA Max
s _{Offset Current}
250pA Max
s _{Bias and Offset Current Drift}
4pA/°C Max
s _{Supply Current}
560µA Max
s _{0.1Hz to 10Hz Noise}
0.5µVp-p, 2.2pAp-p
s _CMRR
115dB Min
s _{Voltage Gain}
117dB Min
s _PSRR
114dB Min
s _{Guaranteed Operation on Two NiCad Batteries}
U
APPLICATIONS
s _{Replaces OP-07/OP-77/OP-97/OP-177/AD707/}
LT1001 with Improved Price/Performance
s _{High Impedance Difference Amplifiers}
s _{Logarithmic Amplifiers (Wide Dynamic Range)}
s _{Thermocouple Amplifiers}
s _{Precision Instrumentation}
s _{Active Filters (with Small Capacitors)}
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.
TYPICAL APPLICATION
Saturated Standard Cell Amplifier
9V
2N3609
3₊ ⁷
+
1.018235V
6
LT1097
2_–
4
OUT = 1.1V TO 8.0V
AS 1.8k ≤ R2 ≤ 135k
SATURATED
STANDARD
CELL #101
EPPLEY LABS
NEWPORT, R. I.
R1
R2
20k
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
Input Offset Voltage Distribution
50
6,500 UNITS IN SO PACKAGE
6,680 UNITS IN
40
PLASTIC
DIP
13,180 UNITS
TESTED
30
V_S = ±15V
T_A = 25°C
20
10
0
–50 –40 –30 –20 –10 0 10 20 30 40 50
INPUT OFFSET VOLTAGE (µV)
LT1097 • G01
1