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LT1882 Datasheet

  • LT1882

  • Dual and Quad Rail-to-Rail Output, Picoamp Input Precision O...

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Final Electrical Specifications
FEATURES
s
s
s
s
s
s
s
s
s
s
LT1881/LT1882
Dual and Quad
Rail-to-Rail Output,
Picoamp Input Precision Op Amps
April 2000
DESCRIPTIO
The LT
廬
1881 and LT1882 op amps bring high accuracy
input performance to amplifiers with rail-to-rail output
swing. Input bias currents and capacitive load driving
capabilities are superior to the similar LT1884 and LT1885
amplifiers, at the cost of a slight loss in speed. Input
offset voltage is trimmed to less than 50碌V and the low
drift maintains this accuracy over the operating tempera-
ture range. Input bias currents are an ultralow 200pA
maximum.
The amplifiers work on any total power supply voltage
between 2.7V and 36V (fully specified from 5V to
鹵15V).
Output voltage swings to within 40mV of the negative
supply and 220mV of the positive supply make these
amplifiers good choices for low voltage single supply
operation.
Capacitive loads up to 1000pF can be driven directly in
unity-gain follower applications.
The dual LT1881 and LT1881A are available with standard
pinouts in S8 and PDIP packages. The quad LT1882 is in
a 14-pin SO package. For a higher speed device with
similar DC specifications, see the LT1884/LT1885.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Offset Voltage: 50碌V Maximum (LT1881A)
Input Bias Current: 200pA Maximum (LT1881A)
Offset Voltage Drift: 0.8碌V/擄C Maximum
Rail-to-Rail Output Swing
Supply Range: 2.7V to 36V
Operates with Single or Split Supplies
Open-Loop Voltage Gain: 1 Million Minimum
1mA Maximum Supply Current Per Amplifier
Stable at A
V
= 1, C
L
= 1000pF
Standard Pinouts
APPLICATIO S
s
s
s
s
s
Thermocouple Amplifiers
Bridge Transducer Conditioners
Instrumentation Amplifiers
Battery-Powered Systems
Photo Current Amplifiers
TYPICAL APPLICATIO
5V
16-Bit Voltage Output DAC on
鹵5V
Supply
26
24
22
20
18
16
14
12
10
8
6
4
2
0
V
S
=
鹵15V
TC V
OS
Distribution, Industrial Grade
5V
+
LT1881
鈥?/div>
LT1634
4.096V
R1
鈥?V
R
COM
REF
R
OFS
33pF
5V
DAC
PERCENT OF UNITS (%)
1.65k
40 N8 (1 LOT)
144 S8 (2 LOTS)
184 TOTAL PARTS
鈥?/div>
LT1881
1 鈥?.9鈥?.8鈥?.7鈥?.6鈥?.5鈥?.4鈥?.3鈥?.2鈥?.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
INPUT OFFSET VOLTAGE DRIFT (碌V/擄C)
1881/2 TA01a
LTC
廬
1597
+
鈥?V
V
OUT
鈥?4.096V
TO 4.096V
1881/2 TA01
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
U
U
U
1

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