March 7, 2019 — Microchip Technology announced 12 Successive Approximation Register (SAR) Analog-to-Digital Converters (ADCs) along with a companion differential amplifier designed specifically for the new portfolio of SAR ADCs. 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, for automotive and industrial applications. The MCP6D11 differential amplifier provides a low-distortion 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 ranging from 500 kilo samples per second (ksps) to 1 Msps, allowing developers to choose the right ADC for their designs. A fixed low analog supply voltage (AV DD ) of 1.8V and low-current operation (1.6 mA typical active current for 1 Msps and 1.4 mA for 500 ksps) enables this family of ADCs to maintain a wide input full-scale range.
These devices support a digital I/O interface voltage (DV IO ) 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 using external voltage level shifters. The MCP331x1(D)-xx family contains both single-ended and differential input voltage measurement options, enabling systems to convert the difference between any two arbitrary waveforms.
Properly interfacing a small analog signal to a high-speed, high-resolution ADC without introducing additional noise and distortion is a critical challenge. Microchip’s MCP6D11 differential amplifier is designed specifically to address this challenge, providing a low-distortion and high-accuracy interface to properly drive the ADC.
