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Microchip MCP3461R/MCP3561R Analog to Digital Converter (ADC)

16 or 24-Bit, 153.6 kSPS, Single Channel with Vref

The Microchip MCP3461R (MCP3561R) is a low-noise 16(24)-bit Delta-Sigma Analog-to-Digital Converter (ADC), with two single-ended or one differential input channels and programmable data rate of up to 153.6 kSPS. The ADC converters offer integrated features such as internal Vref, an oscillator, temperature sensor and burnout sensor detection, in order to reduce system component count and total solution cost.

The MCP3461R (MCP3561R) ADC is fully configurable with Oversampling Ratio (OSR) from 32 to 98304 and gain from 0.33X to 64X. The converter includes an internal sequencer (SCAN mode) with multiple monitor channels and a 24-bit timer to be able to automatically create conversion loop sequences without needing MCU communications. Advanced security features such as CRC and register map lock, can guarantee configuration locking and integrity as well as communication data integrity for secure environments.

The Microchip MCP3461R (MCP3561R) also features a 20 MHz SPI-compatible serial interface. Communication is largely simplified with 8-bit commands, including various continuous Read/Write modes and 24/32-bit multiple data formats that can be accessed by the Direct Memory Access (DMA) of an 8-bit, 16-bit or 32-bit MCU. The MCP3461R is available in an ultra-small, 3 mm x 3 mm UQFN-20, and leaded 6.4 mm x 6.4mm TSSOP-20 package and is specified over an extended temperature range from -40°C to +125°C.

MCP3x6xR Key Features

  • 24-bit/16-bit Resolution
  • 1/2/4 Diff Input Channels or 2/4/8 SE Channels
  • Data Rate up to 153.6kSPS
  • Programmable Gain: 0.33X to 64X
  • Internal 2.4V Vref
    • 9 ppm/°C (-40°C to 85°C)
  • Internal Oscillator
  • Internal Temperature Sensor
  • SPI Interface
  • Small Package: MCP3565R/MCP3465R UQFN-12 (2 mm X 2 mm)
  • Low Noise
    • 90nV @12.5 SPS
  • Low Gain Error and Offset Error Drift
    • OE Drift: 4/Gain nV/°C
    • GE Drift: 0.5 ppm/°C
  • Sensor Open/Short Detection
  • Advanced Security Features
    • 16-bit CRC
  • SCAN Mode
  • Extended Temperature Range: -40°C to +125°C

MCP3x6xR Target Applications

  • Resistive Sensor Transducers and Transmitters:
    • Temperature, Pressure, Strain and Force Measurement
  • Factory Automation and Process Controls
  • Portable Instrumentation
  • Vibration Analysis
  • Medical Diagnostics
  • IOT applications



Name Value
Typical Supply Current (µA) 930
Typical INL (ppm) 7
Max Sample Rate (samples/sec) 153.6k
Interface SPI
Resolution (bits) 16/24
Supply Voltage Range (V) 2.7 to 3.6


MCP3461/2/4R & MCP3461/2/4R Functional Block Diagram

Microchip – MCP3461/2/4R & MCP3461/2/4R Functional Block Diagram



MCP3x6xR Evaluation Kit

Microchip – MCP3x6xR Evaluation Kit