AD8418A Bidirectional, Zero Drift, Current Sense Amplifier
●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
■GENERAL DESCRIPTION:
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. Th e 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).
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AD8418A 、 AD8205 、 AD8206 、 AD8207 、 AD8210 、 AD8417 、 AD8418ABRMZ 、 AD8418ABRMZ-RL 、 AD8418AWBRMZ 、 AD8418AWBRMZ-RL 、 AD8418AWBRZ 、 AD8418AWBRZ-RL 、 AD8418AWHRZ 、 AD8418AWHRZ-RL 、 AD8418AWHRMZ 、 AD8418AWHRMZ-RL 、 AD8418AWBRMZ-10 、 AD8418AWBRMZ-10RL 、 AD8418AR-EVALZ 、 AD8418ARM-EVALZ 、 AD8418WB 、 AD8418WH 、 AD8418AB 、 AD8214 、 AD8418AW |
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[ High-side current sensing ][ Motor controls ][ Solenoid controls ][ Power management ][ Low-side current sensing ][ Diagnostic protection ] |
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Datasheet |
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Please see the document for details |
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RM-8;R-8;RM-10 |
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English Chinese Chinese and English Japanese |
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6/2020 |
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Rev. E |
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D11883-6/20(E) |
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452 KB |
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