LINEAR TECHNOLOGY LT1881 LT1882 User's Manual
Summary
These high-precision operational amplifiers deliver ultra-low input bias currents and offset voltages, making them essential components for sensitive analog signal conditioning. Featuring rail-to-rail output and wide supply range capability, they are perfect for applications like data acquisition, instrumentation, and battery-powered systems. The accompanying documentation provides comprehensive electrical specifications on drift, current performance across varying temperatures, and detailed usage parameters to ensure accurate circuit design.
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LT1881/LT1882 Dual and Quad Rail-to-Rail Output,
Picoamp Input Precision Op Amps FEATURES DESCRIPTIO
Offset Voltage: 50µV Maximum (LT1881A) The LT®1881 and LT1882 op amps bring high accuracy Input Bias Current: 200p A Maximum (LT1881A) input performance to amplifiers with rail-to-rail output Offset Voltage Drift: 0.8µV/°C Maximum swing. Input bias currents and capacitive load driving Rail-to-Rail Output Swing capabilities are superior to the similar LT1884 and LT1885 Supply Range: 2.7V to 36V amplifiers, at the cost of a slight loss in speed. Input Operates with Single or Split Supplies offset voltage is trimmed to less than 50µV and the low Open-Loop Voltage Gain: 1 Million Minimum drift maintains this accuracy over the operating tempera- 1m A Maximum Supply Current Per Amplifier ture range. Input bias currents are an ultralow 200p A Stable at AV = 1, CL = 1000p F maximum.
Standard Pinouts
The amplifiers work on any total power supply voltage between 2.7V and 36V (fully specified from 5V to ±15V).
PE RC EN OF NI TS Output voltage swings to within 40m V of the negative
APPLICATIO
supply and 220m V of the positive supply make these
Thermocouple Amplifiers amplifiers good choices for low voltage single supply Bridge Transducer Conditioners operation. Instrumentation Amplifiers
Capacitive loads up to 1000p F can be driven directly in
Battery-Powered Systems
unity-gain follower applications.
Photo Current Amplifiers
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.
TYPICAL APPLICATIO
16-Bit Voltage Output DAC on ±5V Supply TC VOS Distribution, Industrial Grade
VS = ±15V
1.65k 40 N8 (1 LOT) 144 S8 (2 LOTS) 184 TOTAL PARTS
LT1881
LT1634
RCOM ROFSREFR1
INPUT OFFSET VOLTAGE DRIFT (µV/°C)
VOUT 1881/2 TA01a
LT1881 –4.096V TO 4.096V
LTC®1597
1881/2 TA01
Page Summary Contents For LINEAR TECHNOLOGY LT1881 LT1882 User's Manual
Manual Details
| Brand | Linear |
|---|---|
| Pages | 16 |
| File Size | 256.25 KB |
| Published | June 06, 2026 |
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Frequently Asked Questions
What is the recommended voltage supply range for these op amps?
They can operate on any total power supply voltage between 2.7V and 36V.
How do I reduce offset voltage when using a single supply?
The devices are designed to handle single or split supplies, which helps keep the offset voltage at less than 50mV.
What loads can these amplifiers drive directly?
They can drive capacitive loads up to 1000pF in unity-gain follower applications.
What is the maximum input bias current for LT1882s?
The input bias current (LT1881/LT1882) is typically around 500 pA at room temperature.