LT1881 - Dual Rail-to-Rail Output, Picoamp Input Precision Op Amps

Features

  • Offset Voltage: 50µV Maximum (LT1881A)
  • Input Bias Current: 200pA Maximum (LT1881A)
  • Offset Voltage Drift: 0.8µV/°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 AV = 1, CL = 1000pF
  • Standard Pinouts
  • Wide Operating Temperature Range:
    –55°C to 125°C (LT1882)
Designed for Automotive and Transportation Applications
AEC-Q100 generic family data available for specific packages


Typical Application

LT1881 Typical Application
LT1881 Typical Application

Description

The LT1881 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 50µV and the low drift maintains this accuracy over the operating temperature 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 ±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.

Packaging

CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
Drawing
RoHS
LT1881ACN8#PBF N-8 N C 05-08-1510 (N8) Yes
LT1881ACS8#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1881ACS8#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1881AIN8#PBF N-8 N I 05-08-1510 (N8) Yes
LT1881AIS8#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1881AIS8#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1881CN8#PBF N-8 N C 05-08-1510 (N8) Yes
LT1881CS8#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1881CS8#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LT1881IN8#PBF N-8 N I 05-08-1510 (N8) Yes
LT1881IS8#PBF SO-8 S8 I 05-08-1610 (S8) Yes
LT1881IS8#TRPBF SO-8 S8 I 05-08-1610 (S8) Yes


LT1881 Package Drawing
LT1881 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LT1881ACN8#PBF N-8 C $4.40 $3.75 Yes
LT1881ACS8#PBF SO-8 C $4.40 $3.75 Yes
LT1881ACS8#TRPBF SO-8 C $3.81 Yes
LT1881AIN8#PBF N-8 I $5.05 $4.30 Yes
LT1881AIS8#PBF SO-8 I $5.05 $4.30 Yes
LT1881AIS8#TRPBF SO-8 I $4.36 Yes
LT1881CN8#PBF N-8 C $3.30 $2.75 Yes
LT1881CS8#PBF SO-8 C $3.30 $2.75 Yes
LT1881CS8#TRPBF SO-8 C $2.81 Yes
LT1881IN8#PBF N-8 I $3.60 $2.95 Yes
LT1881IS8#PBF SO-8 I $3.60 $2.95 Yes
LT1881IS8#TRPBF SO-8 I $3.01 Yes
Buy NowRequest Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Click here to view our complete list of demo boards

Designed for Automotive and Transportation Applications

Please contact your local sales representative for more information regarding reliability reports and AEC-Q100 data or to inquire about parts that are not included. For more information, view our Automotive and Transportation page

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LT1881AIN8#PBF N-8 I $5.05 $4.30 Yes
LT1881IN8#PBF N-8 I $3.60 $2.95 Yes
Buy NowRequest Samples
* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Applications

  • Thermocouple Amplifiers
  • Bridge Transducer Conditioners
  • Instrumentation Amplifiers
  • Battery-Powered Systems
  • Photo Current Amplifiers

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

Models for the following parts are available in LTspice:
LT1881

Technical Support