Product details

Number of channels (#) 1 Vs (Max) (V) 36 Vs (Min) (V) 4.5 Input offset (+/-) (Max) (uV) 125 Gain (Min) (V/V) 1 Gain (Max) (V/V) 10000 Noise at 1 kHz (Typ) (nV/rt (Hz)) 8 Features Current Feedback, Overvoltage Protection CMRR (Min) (dB) 113 Input offset drift (+/-) (Max) (uV/C) 1 Input bias current (+/-) (Max) (nA) 10 Iq (Typ) (mA) 2 Bandwidth at min gain (Typ) (MHz) 1.3 Gain error (+/-) (Max) (%) 0.7 Operating temperature range (C) -55 to 210 Type Resistor Output swing headroom (to negative supply) (Typ) (V) 0.8 Output swing headroom (to positive supply) (Typ) (V) -0.9 Input common mode headroom (to negative supply) (Typ) (V) 1.7 Input common mode headroom (to positive supply) (Typ) (V) -1.4 Noise at 0.1 Hz-10 Hz (Typ) (uVpp) 0.2 Gain non-linearity (+/-) (Max) (%) 0.002
Number of channels (#) 1 Vs (Max) (V) 36 Vs (Min) (V) 4.5 Input offset (+/-) (Max) (uV) 125 Gain (Min) (V/V) 1 Gain (Max) (V/V) 10000 Noise at 1 kHz (Typ) (nV/rt (Hz)) 8 Features Current Feedback, Overvoltage Protection CMRR (Min) (dB) 113 Input offset drift (+/-) (Max) (uV/C) 1 Input bias current (+/-) (Max) (nA) 10 Iq (Typ) (mA) 2 Bandwidth at min gain (Typ) (MHz) 1.3 Gain error (+/-) (Max) (%) 0.7 Operating temperature range (C) -55 to 210 Type Resistor Output swing headroom (to negative supply) (Typ) (V) 0.8 Output swing headroom (to positive supply) (Typ) (V) -0.9 Input common mode headroom (to negative supply) (Typ) (V) 1.7 Input common mode headroom (to positive supply) (Typ) (V) -1.4 Noise at 0.1 Hz-10 Hz (Typ) (uVpp) 0.2 Gain non-linearity (+/-) (Max) (%) 0.002
CDIP SB (JDJ) 8 88 mm² 7.49 x 11.81 CFP (HKJ) 8 39 mm² 6.9 x 5.65 CFP (HKQ) 8 39 mm² 6.9 x 5.65
  • 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

  • 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

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.

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.

Download

Technical documentation

star = Top documentation for this product selected by TI
No results found. Please clear your search and try again.
View all 9
Type Title Date
* Data sheet INA12x-HT Precision, Low-Power Instrumentation Amplifiers datasheet (Rev. F) PDF | HTML 24 Oct 2013
* Radiation & reliability report INA129SHKJ Reliability Report 07 May 2012
* Radiation & reliability report INA129SHKQ Reliability Report 07 May 2012
* Radiation & reliability report INA129SJD Reliability Report 07 May 2012
Application note Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps PDF | HTML 27 Jul 2021
Technical article What is an instrumentation amplifier? 09 Aug 2019
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Technical article How to layout a PCB for an instrumentation amplifier 14 Oct 2016
Technical article Dealing with rejection: Instrumentation amplifier PSRR and CMRR (Part I) 25 Nov 2013

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

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 (...)
Simulation tool

TINA-TI — SPICE-based analog simulation program

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 (...)
Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

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 (...)
lock = Requires export approval (1 minute)
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

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

TI E2E™ forums with technical support from TI engineers

Content is provided "as is" by TI and community contributors and does not constitute TI specifications. See terms of use.

If you have questions about quality, packaging or ordering TI products, see TI support. ​​​​​​​​​​​​​​

Videos