LT1012A_15 Datasheet, PDF (1/20 Pages) Linear Technology – Picoamp Input Current, Microvolt Offset, Low Noise Op Amp

FEATURES
s _{OP-07 Type Performance:}
at 1/8th of OP-07’s Supply Current
at 1/20th of OP-07’s Bias and Offset Currents
s _{Guaranteed Offset Voltage: 25µV Max}
s _{Guaranteed Bias Current: 100pA Max}
s _{Guaranteed Drift: 0.6µV/°C Max}
s _{Low Noise, 0.1Hz to 10Hz: 0.5µVP-P}
s _{Guaranteed Low Supply Current: 500µA Max}
s _{Guaranteed CMRR: 114dB Min}
s _{Guaranteed PSRR: 114dB Min}
s
Guaranteed
Operation
U
at
±1.2V
Supplies
APPLICATIO S
s _{Replaces OP-07 While Saving Power}
s _{Precision Instrumentation}
s _{Charge Integrators}
s _{Wide Dynamic Range Logarithmic Amplifiers}
s _{Light Meters}
s _{Low Frequency Active Filters}
s _{Thermocouple Amplifiers}
LT1012A/LT1012
Picoamp Input Current,
Microvolt Offset,
Low Noise Op Amp
DESCRIPTIO
The LT^®1012 is an internally compensated universal
precision operational amplifier which can be used in
practically all precision applications. The LT1012
combines picoampere bias currents (which are
maintained over the full –55°C to 125°C temperature
range), microvolt offset voltage (and low drift with time
and temperature), low voltage and current noise, and
low power dissipation. The LT1012 achieves precision
operation on two Ni-Cad batteries with 1mW of power
dissipation. Extremely high common mode and
power supply rejection ratios, practically unmeasurable
warm-up drift, and the ability to deliver 5mA load current
with a voltage gain of one million round out the LT1012’s
superb precision specifications.
The all around excellence of the LT1012 eliminates the
necessity of the time consuming error analysis procedure
of precision system design in many applications; the
LT1012 can be stocked as the universal internally
compensated precision op amp.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Protected by U. S. patents 4,575,685 and 4,775,884
TYPICAL APPLICATIO
± 250V Common Mode Range Instrumentation Amplifier (A_V = 1)
R1
1M
–IN 3
R3
1M
COMMON
+IN 7
MODE
INPUT
± 250V
R5
975k
4
1
R2
6V TO 18V R6
20k
25k
2_– ⁷
2
6
LT1012
50k _OPTIONAL
CMRR
TRIM
OUT
63 +
4
R1 TO R6: VISHAY 444
R4
ACCUTRACT THIN FILM
19.608k
SIP NETWORK
5 ^{– 6V TO –18V X : VISHAY 444 PIN NUMBERS}
VISHAY INTERTECHNOLOGY, INC
63 LINCOLN HIGHWAY
MALVERN, PA 19355
COMMON MODE REJECTION RATIO = 74dB (RESISTOR LIMITED)
WITH OPTIONAL TRIM = 130dB
OUTPUT OFFSET (TRIMMABLE TO ZERO) = 500µV
OUTPUT OFFSET DRIFT = 10µV/°C
INPUT RESISTANCE = 1M
LT1012A • TA01
Typical Distribution of Input
Offset Voltage
200
1140 UNITS
FROM THREE
160 ^RUNS
V_S = ±15V
T_A = 25°C
V_CM = 0V
120
80
40
0
–40 –20
0
20
40
INPUT OFFSET VOLTAGE (µV)
LT1012A • TA02
sn1012 1012afbs
1