Analog Devices Inc. AD8418 Current Sense Amplifiers
Analog Devices Inc. AD8418 Current Sense Amplifiers feature 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.
Features
- 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) of 86dB, dc to 10kHz
- Qualified for automotive applications
Applications
- High-side current sensing
- Low-side current sensing
- Diagnostic protection
Associated Evaluation Board
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.
Videos
Motor Control Solutions
Analog Devices Inc. Motor Control Solutions
The components and full signal chain integration to enable rapid design of motor-based systems.