MCP33111D-10-I/MS

Analog To Digital Converters (ADC) Overview

The MCP33111D-10-I/MS is a single-channel, fully differential 12-bit successive approximation register (SAR) analog-to-digital converter manufactured by Microchip Technology. It operates at a throughput rate of 1 Msps with no output latency. The device requires a fixed 1.8V analog supply (AVDD) and supports digital I/O voltages from 1.7V to 5.5V. It utilizes an external reference voltage between 2.5V and 5.1V to define the input full-scale range. Key electrical specifications include a typical signal-to-noise ratio of 73.9 dBFS, a spurious-free dynamic range of 99.3 dB, integral nonlinearity of ±0.12 LSB, and differential nonlinearity of ±0.06 LSB.

Analog To Digital Converters (ADC) Feature Summary

• 12-bit resolution with guaranteed no missing codes and 1 Msps throughput
• Fully differential input operation with -VREF to +VREF full-scale range
• Integrated self-calibration for offset, gain, and linearity errors
• SPI-compatible 3-wire serial interface supporting clock rates up to 100 MHz

Analog To Digital Converters (ADC) Applications

• High-Precision Data Acquisition
• Medical Instruments
• Test Equipment
• Electric Vehicle Battery Management Systems
• Motor Control Applications

Analog To Digital Converters (ADC) Procurement Notes

Verify that the ordering suffix 'I' corresponds to the industrial temperature range (-40°C to +125°C) as specified in the datasheet. Confirm the package type is MSOP-10. Ensure the application design accommodates the specific power supply requirements: 1.8V for AVDD and 1.7V to 5.5V for DVIO. Check for AEC-Q100 qualification if automotive grade reliability is required.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a single-channel, high-speed, low-power ADC is needed. The 12-bit resolution is suitable for applications requiring moderate precision but high sampling rates. The wide digital I/O voltage range allows direct interfacing with various host microcontrollers without level shifters. Consider the TDFN-10 package option if a smaller footprint is preferred over the MSOP-10.

Analog To Digital Converters (ADC) Part Context

This part belongs to the MCP331x1D-XX family of SAR ADCs, which also includes 14-bit (MCP33121D) and 16-bit (MCP33131D) variants. The '-10' suffix indicates a 1 Msps sample rate, while the '-05' variant offers 500 kSPS. All family members share similar pinouts and operational characteristics, differing primarily in resolution and associated performance metrics like SNR and INL.

Analog To Digital Converters (ADC) Replacement Considerations

Direct functional replacements within the same family include MCP33121D-10-I/MS (14-bit) and MCP33131D-10-I/MS (16-bit). These parts maintain the same pinout and interface but offer higher resolution. For lower speed requirements, the MCP33111D-05-I/MS provides 500 kSPS operation. Ensure the replacement meets the specific resolution and accuracy needs of the design.

Analog To Digital Converters (ADC) FAQ

How does the device handle calibration?

The MCP33111D-10 performs automatic self-calibration during power-up to minimize offset, gain, and linearity errors. Users can also initiate on-demand recalibration via a user command during normal operation to restore optimum performance after significant environmental changes.

What is the relationship between VREF and AVDD?

The external reference voltage (VREF) setting is independent of the analog supply voltage (AVDD). The reference voltage must be between 2.5V and 5.1V, which is typically higher than the fixed 1.8V AVDD supply.

Can the device interface directly with 3.3V or 5V logic?

Yes, the digital I/O interface voltage (DVIO) range is 1.7V to 5.5V. This wide range allows the device to interface directly with most host devices, such as PIC32 microcontrollers, without requiring external voltage level shifters.