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INA188

ACTIVE

36-V, Zero-Drift, Rail-to-Rail-Out Instrumentation Amplifier

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Data sheet

INA188

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Vs (max) (V) 36 Vs (min) (V) 4 Input offset (±) (max) (µV) 55 Voltage gain (min) (V/V) 1 Voltage gain (max) (V/V) 1000 Noise at 1 kHz (typ) (nV√Hz) 12.5 Features Small Size, Zero Drift CMRR (min) (dB) 118 Input offset drift (±) (max) (V/°C) 0.0000002 Input bias current (±) (max) (nA) 2.5 Iq (typ) (mA) 1.4 Bandwidth at min gain (typ) (MHz) 0.6 Gain error (±) (max) (%) 0.2 Operating temperature range (°C) -40 to 125 Rating Catalog Type Resistor Output swing headroom (to negative supply) (typ) (V) 0.22 Output swing headroom (to positive supply) (typ) (V) -0.22 Input common mode headroom (to negative supply) (typ) (V) 0.1 Input common mode headroom (to positive supply) (typ) (V) -1.5 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 0.25
Number of channels 1 Vs (max) (V) 36 Vs (min) (V) 4 Input offset (±) (max) (µV) 55 Voltage gain (min) (V/V) 1 Voltage gain (max) (V/V) 1000 Noise at 1 kHz (typ) (nV√Hz) 12.5 Features Small Size, Zero Drift CMRR (min) (dB) 118 Input offset drift (±) (max) (V/°C) 0.0000002 Input bias current (±) (max) (nA) 2.5 Iq (typ) (mA) 1.4 Bandwidth at min gain (typ) (MHz) 0.6 Gain error (±) (max) (%) 0.2 Operating temperature range (°C) -40 to 125 Rating Catalog Type Resistor Output swing headroom (to negative supply) (typ) (V) 0.22 Output swing headroom (to positive supply) (typ) (V) -0.22 Input common mode headroom (to negative supply) (typ) (V) 0.1 Input common mode headroom (to positive supply) (typ) (V) -1.5 Noise at 0.1 Hz to 10 Hz (typ) (µVPP) 0.25
SOIC (D) 8 29.4 mm² 4.9 x 6 WSON (DRJ) 8 16 mm² 4 x 4
  • Excellent DC Performance:
    • Low Input Offset Voltage: 55 µV (max)
    • Low Input Offset Drift: 0.2 µV/°C (max)
    • High CMRR: 104 dB, G ≥ 10 (min)
  • Low Input Noise:
    • 12 nV/√Hz at 1 kHz
    • 0.25 µVPP (0.1 Hz to 10 Hz)
  • Wide Supply Range:
    • Single Supply: 4 V to 36 V
    • Dual Supply: ±2 V to ±18 V
  • Gain Set with a Single External Resistor:
    • Gain Equation: G = 1 + (50 kΩ / RG)
    • Gain Error: 0.007%, G = 1
    • Gain Drift: 5 ppm/°C (max) G = 1
  • Input Voltage: (V–) + 0.1 V to (V+) – 1.5 V
  • RFI-Filtered Inputs
  • Rail-to-Rail Output
  • Low Quiescent Current: 1.4 mA
  • Operating Temperature: –55°C to +150°C
  • SOIC-8 and DFN-8 Packages
  • Excellent DC Performance:
    • Low Input Offset Voltage: 55 µV (max)
    • Low Input Offset Drift: 0.2 µV/°C (max)
    • High CMRR: 104 dB, G ≥ 10 (min)
  • Low Input Noise:
    • 12 nV/√Hz at 1 kHz
    • 0.25 µVPP (0.1 Hz to 10 Hz)
  • Wide Supply Range:
    • Single Supply: 4 V to 36 V
    • Dual Supply: ±2 V to ±18 V
  • Gain Set with a Single External Resistor:
    • Gain Equation: G = 1 + (50 kΩ / RG)
    • Gain Error: 0.007%, G = 1
    • Gain Drift: 5 ppm/°C (max) G = 1
  • Input Voltage: (V–) + 0.1 V to (V+) – 1.5 V
  • RFI-Filtered Inputs
  • Rail-to-Rail Output
  • Low Quiescent Current: 1.4 mA
  • Operating Temperature: –55°C to +150°C
  • SOIC-8 and DFN-8 Packages

The INA188 is a precision instrumentation amplifier that uses TI proprietary auto-zeroing techniques to achieve low offset voltage, near-zero offset and gain drift, excellent linearity, and exceptionally low-noise density (12 nV/√Hz) that extends down to dc.

The INA188 is optimized to provide excellent common-mode rejection of greater than 104 dB (G ≥ 10). Superior common-mode and supply rejection supports high-resolution, precise measurement applications. The versatile three op-amp design offers a rail-to-rail output, low-voltage operation from a 4-V single supply as well as dual supplies up to ±18 V, and a wide, high-impedance input range. These specifications make this device ideal for universal signal measurement and sensor conditioning (such as temperature or bridge applications).

A single external resistor sets any gain from 1 to 1000. The INA188 is designed to use an industry-standard gain equation: G = 1 + (50 kΩ / RG). The reference pin can be used for level-shifting in single-supply operation or for an offset calibration.

The INA188 is specified over the temperature range of –40°C to +125°C .

The INA188 is a precision instrumentation amplifier that uses TI proprietary auto-zeroing techniques to achieve low offset voltage, near-zero offset and gain drift, excellent linearity, and exceptionally low-noise density (12 nV/√Hz) that extends down to dc.

The INA188 is optimized to provide excellent common-mode rejection of greater than 104 dB (G ≥ 10). Superior common-mode and supply rejection supports high-resolution, precise measurement applications. The versatile three op-amp design offers a rail-to-rail output, low-voltage operation from a 4-V single supply as well as dual supplies up to ±18 V, and a wide, high-impedance input range. These specifications make this device ideal for universal signal measurement and sensor conditioning (such as temperature or bridge applications).

A single external resistor sets any gain from 1 to 1000. The INA188 is designed to use an industry-standard gain equation: G = 1 + (50 kΩ / RG). The reference pin can be used for level-shifting in single-supply operation or for an offset calibration.

The INA188 is specified over the temperature range of –40°C to +125°C .
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Type Title Date
* Data sheet INA188 Precision, Zero-Drift, Rail-to-Rail Out, High-Voltage Instrumentation Amplifier datasheet PDF | HTML 22 Sep 2015
E-book An Engineer's Guide to Current Sensing (Rev. B) 12 Apr 2022
Application brief Simplify Voltage and Current Measurement in Battery Test Equipment (Rev. A) PDF | HTML 10 Mar 2022
Application note Importance of Input Bias Current Return Paths in Instrumentation Amplifier Apps PDF | HTML 27 Jul 2021
Application brief Offset Correction Methods: Laser Trim, e-Trim, and Chopper (Rev. C) PDF | HTML 13 Apr 2021
Technical article How to design an accurate DC power supply PDF | HTML 08 Apr 2021
White paper 設計準確且多功能的鋰離子 電池測試解決方案 10 Nov 2020
White paper Designing an Accurate, Multifunction Lithium-Ion Battery-Testing Solution 24 Sep 2020
Technical article Achieving highly accurate full-scale charge and discharge current control for high PDF | HTML 13 Aug 2018
Technical article How to charge and discharge battery test equipment PDF | HTML 12 Apr 2018
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
EVM User's guide Universal Instrumentation Amplifier EVM User’s Guide (Rev. B) PDF | HTML 09 Aug 2016
User guide Single-Supply Thermocouple with RTD Base Cold-Junction Compensation Design Guide 08 Jul 2016
Design guide High Accuracy AC Current Measurement Using PCB Rogowski Coil Sensor Design Guide (Rev. A) 05 Jul 2016
Analog Design Journal Using op amps to reduce near-field EMI on PCBs 26 Jan 2016
Technical article Noise effects on the precision of amplifiers PDF | HTML 04 Nov 2015

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