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INA146

ACTIVE

High-Voltage, Programmable Gain Difference Amplifier

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Data sheet

INA146

ACTIVE
Data sheet Order now

Product details

Number of channels 1 Vs (min) (V) 2.76 Vs (max) (V) 36 CMRR (min) (dB) 76 Common-mode input low (min) (V) -100 Common-mode input high (max) (V) 100 Input offset (±) (max) (V) 0.005 Iq (typ) (mA) 0.6 Slew rate (typ) (V/µs) 0.45 Voltage gain (min) (V/V) 0.1 Voltage gain (max) (V/V) 100 Small-signal bandwidth (typ) (Hz) 500000 Rating Catalog Operating temperature range (°C) -40 to 85 Gain drift (max) (ppm/°C) 1 Gain error (±) (max) (%) 0.1
Number of channels 1 Vs (min) (V) 2.76 Vs (max) (V) 36 CMRR (min) (dB) 76 Common-mode input low (min) (V) -100 Common-mode input high (max) (V) 100 Input offset (±) (max) (V) 0.005 Iq (typ) (mA) 0.6 Slew rate (typ) (V/µs) 0.45 Voltage gain (min) (V/V) 0.1 Voltage gain (max) (V/V) 100 Small-signal bandwidth (typ) (Hz) 500000 Rating Catalog Operating temperature range (°C) -40 to 85 Gain drift (max) (ppm/°C) 1 Gain error (±) (max) (%) 0.1
SOIC (D) 8 29.4 mm² 4.9 x 6
  • High common-mode voltage:
    • 40 V at V S = 5 V
    • ±100 V at V S = ±15 V
  • Differential gain = 0.1 V/V TO 100 V/V:
    • Set with External Resistors
  • Low quiescent current: 570 µA
  • Wide supply range:
    • Single Supply: 4.5 V to 36 V
    • Dual Supplies: ±2.25 V to ±18 V
  • Low gain error: 0.025%
  • High common-mode rejection: 80 dB
  • High common-mode voltage:
    • 40 V at V S = 5 V
    • ±100 V at V S = ±15 V
  • Differential gain = 0.1 V/V TO 100 V/V:
    • Set with External Resistors
  • Low quiescent current: 570 µA
  • Wide supply range:
    • Single Supply: 4.5 V to 36 V
    • Dual Supplies: ±2.25 V to ±18 V
  • Low gain error: 0.025%
  • High common-mode rejection: 80 dB

The INA146 is a precision difference amplifier that can be used to accurately attenuate high differential voltages and reject high common-mode voltages for compatibility with common signal processing voltage levels. High-voltage capability also affords inherent input protection. The input common-mode range extends beyond both supply rails, making the INA146 an excellent choice for both single and dual supply applications.

On-chip precision resistors are laser-trimmed to achieve accurate gain and high common-mode rejection. Excellent TCR tracking of these resistors provides continued high precision over temperature.

A 10:1 difference amplifier provides 0.1 V/V gain when the output amplifier is used as a unity-gain buffer. In this configuration, input voltages up to ±100 V can be measured. Gains greater than 0.1 V/V can be set with an external resistor pair without affecting the common-mode input range.

The INA146 is available in the SO-8 surface-mount package specified for the extended industrial temperature range, –40°C to 85°C.

The INA146 is a precision difference amplifier that can be used to accurately attenuate high differential voltages and reject high common-mode voltages for compatibility with common signal processing voltage levels. High-voltage capability also affords inherent input protection. The input common-mode range extends beyond both supply rails, making the INA146 an excellent choice for both single and dual supply applications.

On-chip precision resistors are laser-trimmed to achieve accurate gain and high common-mode rejection. Excellent TCR tracking of these resistors provides continued high precision over temperature.

A 10:1 difference amplifier provides 0.1 V/V gain when the output amplifier is used as a unity-gain buffer. In this configuration, input voltages up to ±100 V can be measured. Gains greater than 0.1 V/V can be set with an external resistor pair without affecting the common-mode input range.

The INA146 is available in the SO-8 surface-mount package specified for the extended industrial temperature range, –40°C to 85°C.
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* Data sheet INA146 High-voltage, Programmable Gain Difference Amplifier datasheet (Rev. A) PDF | HTML 07 Nov 2023
White paper Understanding Functional Safety FIT Base Failure Rate Estimates per IEC 62380 and SN 29500 (Rev. A) PDF | HTML 30 Apr 2024
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Application note High-Voltage Signal Conditioning for Low-Voltage ADCs (Rev. B) PDF | HTML 18 May 2015

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