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) (uV) 5000 Iq (Typ) (mA) 0.6 Small signal bandwidth (Typ) (MHz) 0.5 Slew rate (Typ) (V/us) 0.45 Gain (Min) (V/V) 0.1 Gain (Max) (V/V) 100 Gain error (+/-) (Max) (%) 0.1 Rating Catalog Operating temperature range (C) -40 to 85 Gain drift (Max) (ppm/C) 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) (uV) 5000 Iq (Typ) (mA) 0.6 Small signal bandwidth (Typ) (MHz) 0.5 Slew rate (Typ) (V/us) 0.45 Gain (Min) (V/V) 0.1 Gain (Max) (V/V) 100 Gain error (+/-) (Max) (%) 0.1 Rating Catalog Operating temperature range (C) -40 to 85 Gain drift (Max) (ppm/C) 1
SOIC (D) 8 19 mm² 3.91 x 4.9
  • HIGH COMMON-MODE VOLTAGE:
    • +40V at V S = +5V
    • ±100V at V S = ±15V
  • DIFFERENTIAL GAIN = 0.1V/V TO 100V/V:
    • Set with External Resistors
  • LOW QUIESCENT CURRENT: 570µA
  • WIDE SUPPLY RANGE:
    • Single Supply: 4.5V to 36V
    • Dual Supplies: ±2.25V to ±18V
  • LOW GAIN ERROR: 0.025%
  • HIGH CMR: 80dB
  • SO-8 PACKAGE

  • HIGH COMMON-MODE VOLTAGE:
    • +40V at V S = +5V
    • ±100V at V S = ±15V
  • DIFFERENTIAL GAIN = 0.1V/V TO 100V/V:
    • Set with External Resistors
  • LOW QUIESCENT CURRENT: 570µA
  • WIDE SUPPLY RANGE:
    • Single Supply: 4.5V to 36V
    • Dual Supplies: ±2.25V to ±18V
  • LOW GAIN ERROR: 0.025%
  • HIGH CMR: 80dB
  • SO-8 PACKAGE

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 ex-tends beyond both supply rails, making the INA146 well-suited for both single and dual supply applica-tions.

On-chip precision resistors are laser-trimmed to achieve accurate gain and high common-mode rejection. Ex-cellent TCR tracking of these resistors assures contin-ued high precision over temperature.

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

The INA146 is available in the SO-8 surface-mount package specified for the extended industrial tempera-ture 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 ex-tends beyond both supply rails, making the INA146 well-suited for both single and dual supply applica-tions.

On-chip precision resistors are laser-trimmed to achieve accurate gain and high common-mode rejection. Ex-cellent TCR tracking of these resistors assures contin-ued high precision over temperature.

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

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

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Technical documentation

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Type Title Date
* Data sheet High-Voltage, Programmable Gain Difference Amplifier datasheet 27 Sep 1999
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) 18 May 2015
Technical article Difference Amplifiers—the need for well-matched resistors 25 Apr 2012

Design & development

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