Datasheet Microchip MCP3903 — Datenblatt

MCP3903
Six Channel Delta Sigma A/D Converter
Features Description 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 <2 ОјA -115 dB Crosstalk Between any Two Channels Low Drift Internal Voltage Reference: 5 ppm/В°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 1 Ојs 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: -40В°C to +125В°C 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. Applications Energy Metering and Power Measurement Portable Instrumentation Medical and Power Monitoring The internal register map contains 24-bit wide ADC
data words, a modulator output register as well as six
24-bit writable control registers to program gain,
over-sampling ratio, phase, resolution, dithering,
shut-down, reset and several communication features.
The communication is largely simplified with various
Continuous Read modes that can be accessed by the …