SAR ADC series takes on tough environments

Twelve successive approximation register (SAR) analogue-to-digital converters (ADCs) together with a companion differential amplifier designed for Microchip’s latest portfolio of SAR ADCs are now available.

Designed to operate in high temperatures and high electromagnetic environments, the MCP331x1(D)-xx family includes a one million samples per second (Msps) fully AEC-Q100-qualified 16-bit SAR, which Microchip says provides the reliability required for automotive and industrial applications. The MCP6D11 differential amplifier offers a low-distortion, high-accuracy interface to achieve the full performance of the ADC within systems.

The MCP331x1(D)-xx family ranges in resolution from 12-, 14- and 16-bit, with speed options from 500 kilosamples per second (ksps) to 1 Msps. A fixed low analogue supply voltage (AVDD) of 1.8V and low-current operation of 1.6 mA typical active current for 1 Msps, and 1.4 mA for 500 ksps, enable the family of ADCs to have an ultra-low power consumption, while maintaining a wide input full-scale range.

These devices support a wide digital I/O interface voltage (DVIO) range (1.7V – 5.5V) which allows it to interface with most host devices, including Microchip’s PIC32, AVR and Arm-based microcontrollers and microprocessors. This eliminates the need for external voltage level shifters

The MCP331x1(D)-xx family contains single-ended and differential input voltage measurement options, enabling systems to convert the difference between any two arbitrary waveforms. It suits applications such as high-precision data acquisition, electric vehicle battery management, motor control and switch-mode power supplies, and is suited to harsh environments.

The MCP331x1D-XX Evaluation Kit is available to demonstrate the performance of the MCP331x1D-XX SAR ADC family of devices. The evaluation kit includes MCP331x1D Evaluation Board, PIC32MZ EF MCU Curiosity Board for data collection and SAR ADC Utility PC Graphical User Interface (GUI)

Each ADC is available in either the 10-MSOP with leads in a 3 mm x 3 mm package or 10-TDFN no-leads 3 mm x 3 mm package. The 9 mm2 size is the smallest footprint available in the market for a 16-bit, 1 Msps differential ADC. The MCP6D11 comes in the 8-MSOP or 3 mm x 3 mm 16-QFN package.

The MCP331x1(D)-xx Evaluation Kit is available for $175.

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