Automotive +-200V Common-Mode Voltage Difference Amplifier


Product details


Number of channels (#) 1 Vs (Min) (V) 2.7 Vs (Max) (V) 36 CMRR (Min) (dB) 70 Common mode input low (Min) (V) -200 Common mode input high (Max) (V) 200 Input offset (+/-) (Max) (uV) 5000 Iq (Typ) (mA) 0.6 Small signal bandwidth (Typ) (MHz) 0.1 Slew rate (Typ) (V/us) 1 Gain (Min) (V/V) 1 Gain (Max) (V/V) 1 Gain error (+/-) (Max) (%) 0.076 Rating Automotive Operating temperature range (C) -40 to 125 Gain drift (Max) (ppm/C) 3 open-in-new Find other Difference amplifiers

Package | Pins | Size

SOIC (D) 8 19 mm² 3.91 x 4.9 open-in-new Find other Difference amplifiers


  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to 125°C
      Ambient Operating Temperature Range
    • Device HBM ESD Classification Level 1C
    • Device CDM ESD Classification Level C6
    • Device MM ESD Classification Level M2
  • High Common-Mode Voltage
    • 75 V at VS = 5 V
    • ±200 V at VS = ±15 V
  • Fixed Differential Gain = 1 V/V
  • Low Quiescent Current: 260 µA
  • Wide Supply Range
    • Single Supply: 2.7 V to 36 V
    • Dual Supplies: ±1.35 V to ±18 V
  • Low Gain Error: 0.075% (Maximum)
  • Low Nonlinearity: 0.002% (Maximum)
  • High CMR: 86 dB
  • Surface-Mount 8-pin SOIC Package
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The INA148-Q1 is a precision, low-power, unity-gain difference amplifier with a high common-mode input voltage range. The device consists of a monolithic, precision, bipolar operational amplifier with a thin-film resistor network.

The on-chip resistors are laser trimmed for an accurate 1-V/V differential gain and high common-mode rejection. Excellent temperature tracking of the resistor network maintains high gain accuracy and common-mode rejection over temperature. The INA148-Q1 operates on single or dual supplies. These features make the INA148-Q1 suitable for HEV/EV and Powertrain applications, specifically in battery management systems.

The INA148-Q1 is available in an 8-pin SOIC, surface-mount package, and is specified for operation over the temperature range of –40°C to 125°C.

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Technical documentation

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Type Title Date
* Data sheet INA148-Q1 ±200-V Common-Mode Voltage Difference Amplifier datasheet (Rev. B) Jun. 13, 2016
E-book The Signal e-book: A compendium of blog posts on op amp design topics Mar. 28, 2017
Technical article Difference Amplifiers—the need for well-matched resistors Apr. 25, 2012

Design & development

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Hardware development

document-generic User guide

Speed up your op amp prototyping and testing with the DIP-Adapter-EVM, which provides a fast, easy and inexpensive way to interface with small, surface-mount ICs. You can connect any supported op amp using the included Samtec terminal strips or wire them directly to existing circuits.

The (...)

  • Simplifies prototyping of SMT IC’s
  • Supports 6 common package types
  • Low Cost

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PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
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  • Supports simultaneous analysis of multiple products
  • (...)
SPICE-based analog simulation program
TINA-TI 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 (...)
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