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Home » NEWEST Products » New by Category » Semiconductors » Amplifier ICs » AD8418 Current Sense AMP - Analog Devices
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Analog Devices AD8418 Current Sense AMP

Analog Devices AD8418 Current Sense AMP

Analog Devices AD8418 current sense amplifier features an initial gain of 20V/V, with a maximum ±0.15% gain error over the entire temperature range. The buffered output voltage directly interfaces with any typical converter. The AD8418 offers excellent input common-mode rejection from -2V to +70V. The AD8418 performs bidirectional current measurements across a shunt resistor in a variety of automotive and industrial applications, including motor control, battery management, and solenoid control. The AD8418 offers breakthrough performance throughout the -40°C to +125°C temperature range. It features a zero drift core, which leads to a typical offset drift of 0.1µV/°C throughout the operating temperature range and the common-mode voltage range. Analog Devices AD8418 current sense amplifier is fully qualified for automotive applications and includes EMI filters and patented circuitry to enable output accuracy with pulse-width modulation (PWM) type input common-mode voltages.

The AD8418-EVALZ evaluation board is designed to aid in the evaluation of the AD8418 current sense amplifiers. AD8418-EVALZ enables quick breadboarding/protoyping of AD8418 current sense amplifiers and is easily configurable for unidirectional or bidirectional operation.

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  • Typical 0.1µV/°C offset drift
  • Maximum ±400µV voltage offset over full temperature range
  • 2.7 V to 5.5V power supply operating range
  • Electromagnetic interference (EMI) filters Included
  • Initial gain = 20V/V
  • -40°C to +125°C temperature range
  • Bidirectional operation
  • Available in 8-lead SOIC and 8-lead MSOP
  • Common-mode rejection ratio (CMRR): 86dB, dc to 10kHz
  • Qualified for automotive applications

  • High-side current sensing
  • Low-side current sensing
  • Diagnostic protection

Functional Block Diagram
Functional Block Diagram

  • Analog Devices Inc.