MCP3461-E/ST

Analog To Digital Converters (ADC) Overview

The MCP3461-E/ST is a single-channel, 16-bit Delta-Sigma Analog-to-Digital Converter (ADC) from Microchip Technology. It features a programmable data rate up to 153.6 ksps and analog gain ranging from 0.33x to 64x. The device operates with an analog supply voltage (AVDD) of 2.7V to 3.6V and a digital supply voltage (DVDD) of 1.8V to 3.6V. Key performance metrics include a typical Signal-to-Noise and Distortion Ratio (SINAD) of 97.2 dB and a low noise floor of 3.2 µV RMS at specific settings. It utilizes a 20 MHz SPI-compatible interface and is housed in a 20-lead TSSOP package.

Analog To Digital Converters (ADC) Feature Summary

• 16-Bit Resolution with 153.6 ksps maximum sampling rate
• Programmable Gain Amplifier (PGA) with range from 0.33x to 64x
• Low Noise Performance: 3.2 µV RMS (Gain = 16x, 9600 SPS)
• Advanced Security Features including 16-bit CRC and register map lock

Analog To Digital Converters (ADC) Applications

• Precision Sensor Transducers and Transmitters
• Factory Automation and Process Controls
• Portable Instrumentation
• Temperature Measurements

Analog To Digital Converters (ADC) Procurement Notes

Verify the 'E' suffix indicates the extended temperature range specification (-40°C to +125°C). Confirm the '/ST' suffix corresponds to the 20-lead TSSOP package type. Ensure compatibility with system power supplies within the specified AVDD and DVDD ranges before procurement.

Analog To Digital Converters (ADC) Selection Notes

Select this component for applications requiring high-resolution single-channel conversion with low noise characteristics. Consider the internal sequencer and burnout current sources if sensor diagnostics are required. Verify that the SPI interface timing meets the host MCU requirements, particularly regarding clock speeds at different DVDD levels.

Analog To Digital Converters (ADC) Part Context

This part belongs to the MCP3461/2/4 family, which includes dual-channel (MCP3462) and quad-channel (MCP3464) variants. All members share identical electrical specifications and feature sets, differing only in the number of available input channels. The MCP3461 specifically provides one differential or two single-ended input channel.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-compatible replacements within the same family include MCP3462-E/ST and MCP3464-E/ST, offering additional channels. Cross-family replacements require verification of pinout, voltage levels, and interface compatibility.