Single Supply, MicroPower Instrumentation Amplifier
Product details
Parameters
Package | Pins | Size
Features
- LOW QUIESCENT CURRENT: 60µA
- WIDE POWER SUPPLY RANGE
- Single Supply: 2.2V to 36V
- Dual Supply: -0.9/+1.3V to ±18V
- COMMON-MODE RANGE to (V-)-0.1V
- RAIL-TO-RAIL OUTPUT SWING
- LOW OFFSET VOLTAGE: 250µV max
- LOW OFFSET DRIFT: 3µV/°C max
- LOW NOISE: 60nV/sqrt(Hz)
- LOW INPUT BIAS CURRENT: 25nA max
- 8-PIN DIP AND SO-8 SURFACE-MOUNT
Description
The INA122 is a precision instrumentation amplifier for accurate, low noise differential signal acquisition. Its two-op-amp design provides excellent performance with very low quiescent current, and is ideal for portable instrumentation and data acquisition systems.
The INA122 can be operated with single power supplies from 2.2V to 36V and quiescent current is a mere 60µA. It can also be operated from dual supplies. By utilizing an input level-shift network, input common-mode range extends to 0.1V below negative rail (single supply ground).
A single external resistor sets gain from 5V/V to 10000V/V. Laser trimming provides very low offset voltage (250µV max), offset voltage drift (3µV/°C max) and excellent common-mode rejection.
Packages options include 8-pin plastic DIP and SO-8 surface-mount packages. Both are specified for the -40°C to +85°C extended industrial temperature range.
Technical documentation
| Type | Title | Date | |
|---|---|---|---|
| * | Data sheet | Single Supply, MicroPower Instrumentation Amplifier datasheet | Sep. 27, 2000 |
| Technical article | What is an instrumentation amplifier? | Aug. 09, 2019 | |
| E-book | The Signal e-book: A compendium of blog posts on op amp design topics | Mar. 28, 2017 | |
| Technical article | How to layout a PCB for an instrumentation amplifier | Oct. 14, 2016 | |
| User guide | Universal Instrumentation Amplifier EVM User’s Guide (Rev. B) | Aug. 09, 2016 | |
| Application note | 4Q 2015 Analog Applications Journal | Oct. 30, 2015 | |
| Application note | VCM vs. VOUT plots for instrumentation amplifiers with two op amps | Oct. 30, 2015 | |
| Technical article | Dealing with rejection: Instrumentation amplifier PSRR and CMRR (Part I) | Nov. 25, 2013 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The universal INAEVM (Instrumentation Amplifier Evaluation Module) is available in two package options that simplify prototyping precision instrumentation amplifiers in either the SO-8 (D) package or the MSOP-8(DGK) package with the pinout shown. See the chart in the user guide (...)
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Features
- Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
- Noise calculations
- Common unit translation
- Solves common amplifier circuit design problems
- Gain selections using standard resistors
- Filter configurations
- Total noise for common amplifier configurations
- (...)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| PDIP (P) | 8 | View options |
| SOIC (D) | 8 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Support & training
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