LT1495/LT1496
1.5µA Max, Dual and Quad
Precision Rail-to-Rail
Input and Output Op Amps
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FEATURES
DESCRIPTION
TheLT®1495/LT1496arethelowestpower(IS ≤ 1.5µA)op
amps with precision specifications. The extremely low
supply current is combined with excellent amplifier speci-
fications: input offset voltage is 375µV maximum with a
typical drift of only 0.4µV/°C, input offset current is 100pA
maximum.Aminimumopen-loopgain(AVOL)of100V/mV
ensures that gain errors are small. The device character-
istics change little over the supply range of 2.2V to ±15V.
Supply rejection is 90dB and the common mode rejection
ratio is 90dB. Operation is specified for 3V, 5V and ±15V
supplies. Reverse battery protection (–18V min) and
inputs that operate above the positive supply make the
LT1495/LT1496 easy to use in harsh environments.
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Low Supply Current: 1.5µA Max
Rail-to-Rail Input and Output
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Low Offset Voltage: 375µV Max
Wide Supply Range: 2.2V to 36V
Single Supply Input Range: –0.3V to 36V
Low Input Bias Current: 250pA
Low Input Offset Current: 20pA
High AVOL: 100V/mV Minimum Driving 100kΩ Load
Output Sources and Sinks 500µA Load Current
Reverse Battery Protected to 18V
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APPLICATIONS
The low bias currents and offset current of the amplifier
permit the use of megohm level source resistors without
introducing significant errors. Voltage noise at 4µVP-P is
remarkably low considering the low supply current.
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Battery- or Solar-Powered Systems
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Portable Instrumentation
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Remote Sensor Amplifier
Micropower Filter
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The LT1495 is available in plastic 8-pin PDIP and SO-8
packages with the standard dual op amp pinout. The
LT1496 is available in 14-pin SO and PDIP packages.
, LTC and LT are registered trademarks of Linear Technology Corporation.
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TYPICAL APPLICATION
TC VOS Distribution
Micropower Integrating Current Sense
30
RESET
100 AMPLIFIERS
V
= ±2.5V
S
25
20
15
10
5
0.1µF
–40°C TO 85°C
V
CC
R
I
1M
–
R
S
–
1/2 LT1495
0.1Ω
1M
1/2 LT1495
V
O
+
I
L
+
10M
10M
LOAD
1495 TA01
V
CC
0
200k
–2.0 –1.6 –1.2 –0.8 –0.4
0
0.4 0.8 1.2 1.6 2.0
TC V (µV/°C)
OS
1495 TA02
OUTPUT SWITCHES
WHEN I dt = 0.98 V
L
R
R
I
C = (4.9A)(SEC) FOR V = 5V
CC
CC
(
)
S
I
= 3µA DURING INTEGRATION; I = 5µA END OF INTEGRATION
S
S
1