MCP3914

The MCP3914 is a 3V eight-channel Analog Front End(AFE, containing eight synchronous sampling delta-sigma ADCs, eight PGAs, phase delay compensation block, low-drift internal voltage reference, digital offset and gain error calibration registers, and high-speed 20 MHz SPI compatible serial interface. The MCP3914 ADCs are fully configurable, with features such as: 16/24-bit resolution, Oversampling Ratio (OSR) from 32 to 4096, gain from 1x to 32x, independent Shutdown and Reset, dithering and auto-zeroing. The MCP3914 includes advanced security features to secure the communications and the configuration settings, such as a CRC-16 checksum on both serial data outputs and static register map configuration. It also includes a register-map lock through an 8-bit secure key to stop unwanted write commands from processing. The MCP3914 is capable of interfacing with a variety of voltage and current sensors, including shunts, current transformers, Rogowski coils and Hall-effect sensors.

Features
  • Eight Synchronous Sampling 24-bit Delta-Sigma ADCs
  • 94.5 dB SINAD, -107 dBc Total Harmonic Distortion (THD) (up to 35th Harmonic), 112 dBFS SFDR for Each Channel
  • Enables 0.1% Typical Active Power Measurement Error over a 10,000:1 Dynamic Range
  • Advanced Security Features: - 16-bit Cyclic Redundancy Check (CRC) checksum - 16-bit CRC checksum and interrupt alert for register map configuration - Register map lock with 8-bit secure key
  • Programmable Data Rate up to 125 ksps
  • Oversampling Ratio up to 4096
  • Ultra-Low Power Shutdown Mode with < 10 µA
  • -122 dB Crosstalk between Channels
  • Differential Voltage Reference Input Pins
  • High Gain Programmable-Gain Amplifier (PGA) on Each Channel (up to 32 V/V)
  • Phase Delay Compensation with 1 µs Time Resolution
  • Separate Data Ready Pin for Easy Synchronization
  • Individual 24-bit Digital Offset and Gain Error Correction for Each Channel
  • High-Speed 20 MHz Serial Peripheral Interface (SPI) with Mode 0,0 and 1,1 Compatibility
  • Continuous Read/Write Modes for Minimum Communication Time
  • Available in a 40-lead UQFN Package
Parameter
Parameter Name Value Value
Measurement Error 0.1% 0.1%
Dynamic Range 10000:1 10000:1
Voltage Reference Drift ppm typ 9 9
PSRR % typ -73 dB -73 dB
Temp. Range (°C) -40 to 125 -40 to 125
Analog Supply Voltage AVdd Range (V) 2.7 to 3.6 2.7 to 3.6
Digital Supply Voltage DVdd Range (V) 2.7 to 3.6 2.7 to 3.6
Documents
MCP3914 Data SheetData Sheets08/15/20132830KB
MCP3914 Data Sheet ErrataErrata04/09/201566KB
MCP3914 ADC Evaluation Board for 16-Bit MCUs User's GuideProduct Document10/10/20131047KB
Ordering Information
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
MCP3914A1-E/MV40UQFN-40C to +125CTUBE5.204.343.943.813.76
MCP3914A1T-E/MV40UQFN-40C to +125CT/R5.204.343.943.813.76
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RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MCP3914A1-E/MV0.0425000.10958940UQFN5x5x0.5mmMatte Tine3
MCP3914A1T-E/MV0.0425000.16697040UQFN5x5x0.5mmMatte Tine3
MCP3914 Data Sheet MCP3914
MCP3914 Data Sheet ADM00523
MCP3914 Data Sheet Errata MCP3914
MCP3914 ADC Evaluation Board for 16-Bit MCUs User's Guide ADM00523