1 Features

• 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 V_S = 5 V
  • ±200 V at V_S = ±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

2 Applications

• HEV/EV and Powertrain
• HEV Battery Management
• Automotive Instrumentation
• Current-Shunt Measurements
• Differential Sensor Amplifiers
• Line Receivers
• Battery-Powered Systems
• Stacked-Cell Monitors

3 Description

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.

1. For all available packages, see the orderable addendum at the end of the data sheet.

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Input Common-Mode Voltage vs Output Voltage