Manufacturer Analog Devices
Manufacturer Part Number AD8418WBRMZ
Description OPAMP, CURRENT SENSE AMPLIFIER MSOP-8
Stock Code W002729
Download Technical Datasheet

The AD8418 is a high voltage, high resolution current shunt amplifier. It features an initial gain of 20 V/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 −2 V to +70 V. 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.

he 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 0.1 µV/°C throughout the operating temperature range and the common-mode voltage range. The AD8418 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 typical input offset voltage is ±200 µV. The AD8418 is offered in 8-lead MSOP and SOIC packages.

  • Typical 0.1 µV/°C offset drift
  • Maximum ±400 µV voltage offset over full temperature range
  • 2.7 V to 5.5 V power supply operating range
  • Electromagnetic interference (EMI) filters Included
  • High common-mode input voltage range
  • −2 V to +70 V operating
  • −4 V to +85 V survival
  • Initial gain = 20 V/V
  • Wide operating temperature range: −40°C to +125°C
  • Bidirectional operation
  • Available in 8-lead SOIC and 8-lead MSOP
  • Common-mode rejection ratio (CMRR): 86 dB, dc to 10 kHz
  • Qualified for automotive applications

Number of Pins

8

Common Mode Rejection Ratio

100 dB

Lead-Free Status

Contains Lead

Lifecycle Status

Pre-Release

Input Impedance

200 kΩ

Input Capacitance

2.00 pF

Bandwidth

250 kHz

Case/Package

MSOP

Mil-Spec

Yes

Packaging

Tube

Mounting Style

Surface Mount

Supply Current

2.60 mA

Supply Voltage (DC)

2.70 V (min)

RoHS

Compliant

REACH SVHC Compliance

No SVHC

Operating Temperature

-40.0 °C (min)