MCP3901 Data Sheet
http://www.microchip.com/stellent/images/mchpsiteimages/dwnfolder.gifMCP3901 Data Sheet - Two Channel Analog Front EndThe MCP3901 dual channel analog front end features high accuracy 16/24-bit delta-sigma A/D converters, internal programmable gain amplifiers, an internal voltage reference, and phase-delay compensation with up to 91 dB SINAD. Communication with the MCP3901 is done via the SPI interface enabling control of the PGAs, oversampling ratio for control of the output data rate (up to 64 ksps), resolution, dithering, shutdown and other communication features.
Parameter NameValue
Measurement Error91 dB SINAD
Dynamic Range24-bit resolution
Voltage Reference Drift ppm typ15
PSRR % typ-77 dB
Temp. Range (°C)-45 to 85
Supply Voltage Range (V)4.5 to 5.5
Features
Two simultaneously sampled 16/24-bit resolution delta-sigma A/D converters
91 dB SINAD, -104 dBc THD, 109 dB SFDR
Programmable data rate up to 64 ksps
Internal voltage reference with low drift of 12 ppm/°C
Internal PGAs on each channel with gain of 32 V/V
Phase delay compensation between channels with 1 µs resolution
Low power consumption (14mW at 5V)
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