High-speed ADCs support designs for harsh environments - Embedded.com

High-speed ADCs support designs for harsh environments


Microchip Technology Inc. announced the MCP331x1(D)-xx family of 12 successive approximation register (SAR) analog-to-digital converters (ADCs) and the MCP6D11 companion differential amplifier for the new SAR ADCs. The series of devices targets applications that require high-speed and high-resolution ADCs and that can operate in high temperatures and high electromagnetic environments including automotive and industrial applications such as high-precision data acquisition, electric vehicle battery management, motor control, and motor switch-mode power supplies.

Resolution ranges from 12-, 14- and 16-bit with speed options from 500 kilosamples per second (ksps) to the industry’s only 1-million-samples-per-second (msps) AEC-Q100−qualified SAR, respectively. The family features a fixed low analog supply voltage of 1.8 V and low current operation of 1.6-mA typical active current for 1 msps and 1.4 mA for 500 ksps, enabling ultra-low power consumption.

The new SAR ADC family provides the resolution, speed, and accuracy increasingly demanded in harsh-environment applications.

Additional features include support for a wide digital I/O interface voltage range (1.7 V to 5.5 V) for easy interface with most host devices such as Microchip’s PIC32, AVR and Arm-based MCUs and MPUs, and both single-ended and differential input voltage measurement options. The differential amplifier interfaces a small analog signal to a high-speed, high-resolution ADC without additional noise and distortion.

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