MCP3901A0-I/SS

MCP3901A0-I/SS is a dual-channel Analog Front End (AFE) containing two synchronous samplings DeltaSigma Analog-to-Digital Converters (ADC), two PGAs, phase delay compensation block internal voltage reference, modulator output block, and high-speed 20MHz SPI compatible serial interface. The converters contain a proprietary dithering algorithm for reduced Idle tones and improved THD. The internal register map contains 24-bit wide ADC data words, a modulator output byte, as well as six writable control registers to program gain, oversampling ratio, phase, resolution, dithering, shutdown, reset and several communication features. Application includes energy metering and power measurement, automotive, portable instrumentation, medical and power monitoring.

• Total harmonic distortion is -104dB typ (OSR = 256, DITHER = On, -40°C <lt/> TA <lt/> +85°C)
• Spurious free dynamic range is 109dB typ (OSR = 256, DITHER = On, -40°C <lt/> TA <lt/> +85°C)
• Ultra low-power shutdown mode with <lt/>2µA
• Crosstalk (50/60Hz) is -133dB typ (OSR = 256, DITHER = On, -40°C <lt/> TA <lt/> +85°C)
• Temperature coefficient is 12ppm/°C typ (VREFEXT = 0, AVDD = 4.5 to 5.5V, -40°C <lt/> TA <lt/> +85°C)
• Differential voltage reference input pins, high gain PGA on each channel
• Phase delay compensation between the two channels with 1µs time resolution
• Separate modulator outputs for each channel
• High-speed, addressable 20MHz SPI interface with mode 0,0 and 1,1 compatibility
• 20 pin SSOP package, industrial operating temperature range from -40 to 85°C