High Speed FET-Input Instrumentation Amplifier
Product details
Parameters
Package | Pins | Size
Features
- FET INPUT: IB = 20pA max
- HIGH SPEED: TS = 4us (G = 100, 0.01%)
- LOW OFFSET VOLTAGE: 500uV max
- LOW OFFSET VOLTAGE DRIFT: 5uV/°C max
- HIGH COMMON-MODE REJECTION: 106dB min
- 8-PIN PLASTIC DIP, SOL-16 SOIC
- APPLICATIONS
- MEDICAL INSTRUMENTATION
- DATA ACQUISITION
Description
The INA111 is a high speed, FET-input instrumentation amplifier offering excellent performance.
The INA111 uses a current-feedback topology providing extended bandwidth (2MHz at G = 10) and fast settling time (4us to 0.01% at G = 100). A single external resistor sets any gain from 1 to over 1000.
Offset voltage and drift are laser trimmed for excellent DC accuracy. The INA111's FET inputs reduce input bias current to under 20pA, simplifying input filtering and limiting circuitry.
The INA111 is available in 8-pin plastic DIP, and SOL-16 surface-mount packages, specified for the -40°C to +85°C temperature range.
Technical documentation
= Top documentation for this product selected by TI
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | High Speed FET-Input Instrumentation Amplifier datasheet | Sep. 27, 2000 |
| Technical articles | 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 articles | How to layout a PCB for an instrumentation amplifier | Oct. 14, 2016 | |
| Technical articles | 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.Design tools & simulation
SBOC137B.TSC (99 KB) - TINA-TI Reference Design
SBOM012A.ZIP (34 KB) - PSpice Model
SBOM206A.ZIP (5 KB) - TINA-TI Spice Model
PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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
- (...)
TINA-TI — TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
ANALOG-ENGINEER-CALC — The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback (...)
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
- (...)
INA-CMV-CALC — The Common-Mode Input Range Calculator is tool for quickly generating plots of an instrumentation amplifier’s common-mode input range vs output. The tool is compatible with both 2-amp and 3-amp instrumentation amplifiers utilizing any supply range.
The Common-Mode Input Range Calculator is pre-loaded (...)
Features
- Preloaded with 20 of TI’s most popular instrumentation amplifier specifications
- Customizable supply, gain, and voltage reference options
- Calculator displays output limitations graphically and numerically
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| PDIP (P) | 8 | View options |
| SOIC (DW) | 16 | View options |
Ordering & quality
Information included:
- 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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