MCP33121D-10T-E/MN

Analog To Digital Converters (ADC) Overview

The MCP33121D-10T-E/MN is a single-channel, fully differential 14-bit Successive Approximation Register (SAR) Analog-to-Digital Converter manufactured by Microchip Technology. It operates at a throughput rate of 1 Msps with no missing codes and zero output latency. The device requires a fixed 1.8V analog supply (AVDD) and supports a digital I/O voltage range of 1.7V to 5.5V (DVIO). It utilizes an external reference voltage between 2.5V and 5.1V to define the input full-scale range from -VREF to +VREF. Communication is handled via a standard SPI-compatible 3-wire interface.

Analog To Digital Converters (ADC) Feature Summary

• 14-bit resolution with guaranteed no missing codes and 1 Msps throughput
• Fully differential input operation with wide common-mode range
• Ultra-low current consumption: ~1.6 mA during conversion and ~0.8 µA in standby
• Integrated self-calibration for offset, gain, and linearity errors

Analog To Digital Converters (ADC) Applications

• High-precision data acquisition systems
• Medical instruments requiring high accuracy
• Electric vehicle battery management systems
• Motor control applications
• Switch-mode power supply monitoring

Analog To Digital Converters (ADC) Procurement Notes

Verify the 'T' suffix indicates tape and reel packaging and the 'MN' suffix denotes the TDFN-10 package. Confirm the '-E' grade corresponds to the extended temperature range of -40°C to +125°C. Ensure the specific revision matches the DS20005947B datasheet. Check for AEC-Q100 qualification status if automotive compliance is required.

Analog To Digital Converters (ADC) Selection Notes

Select this model for applications requiring 14-bit accuracy at 1 Msps. The 1.8V AVDD requirement necessitates a dedicated analog supply rail. The DVIO range allows direct interfacing with 3.3V or 5V logic without level shifters. Consider the MCP33131D-10 for higher 16-bit resolution or the MCP33111D-10 for lower power/12-bit needs.

Analog To Digital Converters (ADC) Part Context

This component belongs to the MCP331x1D-XX family of SAR ADCs. The '21' designation specifically identifies the 14-bit resolution variant within the series, which also includes 12-bit (111) and 16-bit (31) options. All variants share the same pinout and electrical characteristics except for resolution and associated noise performance metrics.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible replacements within the same family include the MCP33131D-10 (16-bit) and MCP33111D-10 (12-bit). Verify that the alternative resolution meets system requirements. Other manufacturers' 14-bit 1 Msps SAR ADCs may require schematic and firmware modifications due to different pinouts or interface protocols.