Overview
Features and Benefits
- 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)
Product Details
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.
Applications
- Thermocouple Amplifiers
- Bridge Transducer Conditioners
- Instrumentation Amplifiers
- Battery-Powered Systems
- Photo Current Amplifiers
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Documentation & Resources
-
R418 Reliability Data3/26/2018
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High Voltage Amplifiers9/10/2013
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Consider New Precision Amplifiers for Updated Industrial Equipment Designs9/1/2009 LT Journal
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Low Noise, Micropower Precision Op Amp Swings Outputs from Rail to Rail9/1/2003 LT Journal
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New Rail-to-Rail Output Op Amps Bring Precision Performance to Low Voltage Systems5/1/2000 LT Journal
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
Models for the following parts are available in LTspice:
LT1881
Design Tool
Analog Filter Wizard
Use the Analog Filter Wizard to design low-pass, high-pass, or band-pass filters with actual op amps in minutes. As you progress through the design process, you can observe the characteristics of your filter design from ideal specifications to real world circuit behavior. Quickly evaluate the tradeoffs in op amp specifications - including gain-bandwidth, noise, and supply current – to determine the best filter design for your requirements.
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
PCN-PDN Information
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Support & Discussions
Sample & Buy
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Buy Now Pricing
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Lead Times
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Sampling
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