Description
●The MCP3903 is a six-channel Analog Front End (AFE) containing three pairs made out of two synchronous
●sampling Delta-Sigma Analog-to-Digital Converters (ADC) with PGA, a phase delay compensation block, internal voltage reference, and high-speed 10 MHz SPI compatible serial interface. The converters contain a proprietary dithering algorithm for reduced idle tones and improved THD.
●Features
●• Six Synchronous Sampling 16/24-bit Resolution Delta-Sigma A/D Converters with Proprietary
● Multi-Bit Architecture
●• 91 dB SINAD, -100 dBc Total Harmonic Distortion (THD) (up to 35th harmonic), 102 dB Spurious-free
● Dynamic Range (SFDR) for Each Channel
●• Programmable Data Rate up to 64 ksps
●• Ultra Low-Power Shutdown Mode with <2μA
●• -115 dB Crosstalk Between any Two Channels
●• Low Drift Internal Voltage Reference: 5 ppm/°C
●• Differential Voltage Reference Input Pins
●• High Gain PGA on Each Channel (up to 32 V/V)
●• Phase Delay Compensation Between Each Pair of Channels with 1μs Time Resolution
●• High-Speed Addressable 10 MHz SPI Interface with Mode 0,0 and 1,1 Compatibility
●• Independent Analog and Digital Power Supplies 4.5V - 5.5V AVDD, 2.7V - 3.6V DVDD
●• Available in Small 28-lead SSOP Package
●• Extended Temperature Range: -40°C to +125°C
●Applications
●• Energy Metering and Power Measurement
●• Portable Instrumentation
●• Medical and Power Monitoring
