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Datasheet Analog Devices AD8418WBRMZ

Manufacturer:Analog Devices
Part Number:AD8418WBRMZ

Bidirectional, Zero-Drift, Current Sense Amplifier


Manufacturer's Classification

Amplifiers > Current Sense Amplifiers

Bidirectional, Zero Drift,
Current Sense Amplifier
AD8418 Data Sheet
FEATURES GENERAL DESCRIPTION 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 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.
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 0.1 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. APPL...

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