MCP3561/2/4 Two/Four/Eight-Channel, 153.6 ksps, Low-Noise 24-Bit Delta-Sigma ADCs Features General Description One/Two/Four Differential or Two/Four/Eight The MCP3561/2/4 devices are 2/4/8-channel, 24-bit, Single-Ended Input Channels Delta-Sigma Analog-to-Digital Converters (ADCs) with programmable data rate of up to 153.6 ksps. They offer 24-Bit Resolution integrated features, such as internal oscillator, tem- Programmable Data Rate: Up to 153.6 ksps perature sensor and burnout sensor detection, in order Programmable Gain: 0.33x to 64x to reduce system component count and total solution 106.7 dB SINAD, -116 dBc THD, 120 dBc SFDR cost. (Gain = 1x, 4800 SPS) The MCP3561/2/4 ADCs are fully configurable with Low-Temperature Drift: Oversampling Ratio (OSR), from 32 to 98304, and gain - Offset error drift: 4/Gain nV/C (AZ MUX = 1) from 1/3x to 64x. These devices include an internal - Gain error drift: 0.5 ppm/C (Gain = 1x) sequencer (SCAN mode) with multiple monitor channels and a 24-bit timer to be able to automatically Low Noise: 90 nV (Gain = 16x,12.5 SPS) RMS create conversion loop sequences without needing RMS Effective Resolution: Up to 23.3 Bits MCU communications. Advanced security features, Wide Input Voltage Range: 0V to AV DD such as CRC and register map lock, can ensure config- Differential Voltage Reference Inputs uration locking and integrity, as well as communication Internal Oscillator or External Clock Selection data integrity for secure environments. Ultra-Low Full Shutdown Current Consumption These devices come with a 20 MHz SPI-compatible (< 5 A) serial interface. Communication is largely simplified Internal Temperature Sensor with 8-bit commands, including various Continuous Burnout Current Sources for Sensor Open/Short Read/Write modes and 24/32-bit multiple data formats Detection that can be accessed by the Direct Memory Access (DMA) of an 8-bit, 16-bit or 32-bit MCU. 24-Bit Digital Offset and Gain Error Calibration Registers The MCP3561/2/4 devices are available in a leaded Internal Conversions Sequencer (SCAN mode) 20-lead TSSOP package, as well as in an ultra-small, for Automatic Multiplexing 3 mm x 3 mm 20-lead UQFN-20 package and are specified over an extended temperature range from Dedicated IRQ Pin for Easy Synchronization -40C to +125C. Advanced Security Features: - 16-bit CRC for secure SPI communications Applications - 16-bit CRC and IRQ for securing configuration Precision Sensor Transducers and Transmitters: Pressure, Strain, Flow and Force Measurement - Register map lock with 8-bit secure key - Monitor controls for system diagnostics Factory Automation and Process Controls Portable Instrumentation 20 MHz SPI-Compatible Interface with Mode 0,0 and 1,1 Temperature Measurements AV : 2.7V-3.6V DD DV : 1.8V-3.6V DD Extended Temperature Range: -40C to +125C Package: 3 mm x 3 mm 20-Lead UQFN and 6.5 mm x 4.4 mm x 1 mm 20-Lead TSSOP 2019-2021 Microchip Technology Inc. DS20006181C-page 1MCP3561/2/4 Package Types 20-Lead UQFN Package Type for All Devices: 20-Lead UQFN* (3 mm x3mm x 0.5mm) A. MCP3561: Single Channel Device 20 19 18 17 16 REFIN- 1 IRQ/MDAT 15 REFIN+ 2 14 SDO EP CH0 3 13 SDI 21 CH1 4 SCK 12 NC 5 11 CS 67 8 9 10 B. MCP3562: Dual Channel Device 20 19 18 17 16 REFIN- 1 15 IRQ/MDAT REFIN+ 2 14 SDO EP CH0 3 13 SDI 21 4 CH1 12 SCK CH2 5 11 CS 67 8 9 10 C. MCP3564: Quad Channel Device 20 19 18 17 16 REFIN- 1 15 IRQ/MDAT REFIN+ 2 14 SDO EP CH0 3 13 SDI 21 CH1 4 12 SCK CH2 5 11 CS 67 8 910 *Includes Exposed Thermal Pad (EP) see Table 3-1. DS20006181C-page 2 2019-2021 Microchip Technology Inc. CH3 A GND CH3 A A GND NC GND CH4 AV AV NC NC AV DD DD DD CH5 DV DV NC NC DV DD DD DD CH6 D NC D NC D GND GND GND MCLK CH7 MCLK MCLK NC NC