Features and Benefits
- Typical 0.1 μV/°C offset drift
- Maximum ±200 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, continuous operation
- −3 V to +80 V, continuous survival
- Minimum DC common-mode rejection ratio (CMRR): 90 dB
- Initial gain = 20 V/V
- Wide operating temperature range
- AD8418AWB and AD8418AB: −40°C to +125°C
- AD8418AWH: −40°C to +150°C
- Bidirectional operation
- Available in 8-lead SOIC_N, 8-lead MSOP, and FMEA tolerant
- 10-lead MSOP pinout
- AEC-Q100 qualified for automotive applications
The AD8418A 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 AD8418A offers excellent input common-mode rejection from −2 V to +70 V. The AD8418A performs bidirectional current measurements across a shunt resistor in a variety of automotive and industrial applications, including motor control, power management, and solenoid control.
The AD8418A offers breakthrough performance throughout the −40°C to +150°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 AD8418A is qualified for automotive applications. The device 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 ±100 μV. The AD8418A is offered in an 8-lead MSOP and an 8-lead SOIC_N package with a 10-lead MSOP pinout option engineered for failure mode and effects analysis (FMEA).
- High-side current sensing in
- Motor controls
- Solenoid controls
- Power management
- Low-side current sensing
- Diagnostic protection
Markets and Technologies
Product Lifecycle Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
Tools & Simulations
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Sample & Buy
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