High Temperature Precision, Low Power Instrumentation Amplifiers
Product details
Parameters
Package | Pins | Size
Features
- Low Offset Voltage: 25 uV Typical
- Low Input Bias Current: 50 nA Typical(1)
- High CMR: 95 dB Typical(1)
- Inputs Protected to ±40 V
- Wide Supply Range: ±2.25 V to ±18 V
- Low Quiescent Current: 2 mA Typical(1)
- APPLICATIONS
- Bridge Amplifiers
- Thermocouple Amplifiers
- RTD Sensor Amplifiers
- Medical Instrumentation
- Data Acquisition
- Supports Extreme Temperature Applications:
- Controlled Baseline
- One Assembly/Test Site
- One Fabrication Site
- Available in Extreme Temperature Ranges
(–55°C to 210°C)(2) - Extended Product Life Cycle
- Extended Product-Change Notification
- Product Traceability
(1) Typical values for 210°C application.
(2) Custom temperature ranges available.
All other trademarks are the property of their respective owners
Description
The INA128-HT and INA129-HT are low-power, general-purpose instrumentation amplifiers offering excellent accuracy. The versatile three-operational-amplifier design and small size make them ideal for a wide range of applications. Current-feedback input circuitry provides wide bandwidth even at high gain. A single external resistor sets any gain from 1 to 10000. The INA128-HT provides an industry-standard gain equation; the INA129-HT gain equation is compatible with the AD620.
The INA128-HT and INA129-HT are laser trimmed for very low offset voltage (25 µV Typ) and high common-mode rejection (93 dB at G ≥ 100). These devices operate with power supplies as low as ±2.25 V, and quiescent current of 2 mA, typically. Internal input protection can withstand up to ±40 V without damage.
Texas Instruments' high-temperature products use highly optimized silicon (die) solutions with design and process enhancements to maximize performance over extended temperatures.
The INA129-HT is available in 8-pin ceramic DIP and 8-pin ceramic surface-mount packages, specified for the –55°C to 210°C temperature range. The INA128-HT is available in an 8-pin SOIC-8 surface-mount package, specified for the –55°C to 175°C temperature range.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | INA12x-HT Precision, Low-Power Instrumentation Amplifiers datasheet (Rev. F) | Oct. 24, 2013 |
* | Radiation & reliability report | INA129SHKJ Reliability Report | May 07, 2012 |
* | Radiation & reliability report | INA129SHKQ Reliability Report | May 07, 2012 |
* | Radiation & reliability report | INA129SJD Reliability Report | May 07, 2012 |
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
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
- (...)
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 |
---|---|---|
(KGD) | 0 | View options |
CDIP SB (JDJ) | 8 | View options |
CFP (HKJ) | 8 | View options |
CFP (HKQ) | 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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