AD8412A: −2V to 50V wide input voltage range, 1.8MHz high bandwidth, current-sense amplifier with PWM rejection and gain 10V/V

In the AD8412A, the buffered output voltage directly interfaces with any typical converter. The AD8412A has a minimum DC common-mode rejection ratio (CMRR) of 110dB from −2V to +50V. The AD8412A performs bidirectional current measurements across a shunt resistor in a variety of industrial and automotive applications.
 
The AD8412A offers breakthrough performance throughout the −40°C to +125°C temperature range. The device features an in-package trim core, which leads to a typical offset drift of ±0.30μV/°C throughout the operating temperature range and the common-mode voltage range without the need for chopping and autozero clocks (which can lead to intermodulation in the application). The device includes circuitry to achieve a wide input common-mode range and balanced input bias currents, regardless of input differential voltage or common-mode voltage, and circuitry to achieve ultralow CMRR drift. The device also includes circuitry to enable output accuracy in the presence of pulse-width modulation (PWM) type input common-mode voltages. The AD8412A is available in an 8-lead, MSOP package.

Key Features and Benefits

Applications

Evaluation Board

The AD8412A can be evaluated with the EVAL-AD8412A.

Block Diagrams and Tables