MCP3903-E/SS

MCP3903-E/SS is a six channel, analogue front end (AFE) containing three pairs made out of two synchronous sampling ΔΣ A/D converter with PGA, a phase delay compensation block, internal voltage reference, and high-speed 10 MHz SPI compatible serial interface. The converter contains 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 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. Application includes energy metering and power measurement, portable instrumentation, medical and power monitoring.

• Signal-to-noise and distortion ratio is 91dB typ (T = 25°C, AVDD = 4.5 to 5.5V, DVDD = 2.7 to 3.6V)
• Offset error range from -3 to 3mV (T = -40°C to +125°C, AVDD = 4.5 to 5.5V, DVDD = 2.7 to 3.6V)
• Total harmonic distortion is -100dB (OSR = 256, DITHER = ON, AVDD = 4.5 to 5.5V, DVDD = 2.7 to 3.6V)
• Signal to noise ratio is 91.5dB typ (T = 25°C, AVDD = 4.5 to 5.5V, DVDD = 2.7 to 3.6V)
• Gain error range from -3 to 3% (AVDD = 4.5 to 5.5V, DVDD = 2.7 to 3.6V, TA = -40 to +125°C)
• DC common mode rejection ratio is -75dB typ (VCM varies from -1V to +1V)
• Operating voltage, analogue range from 4.5 to 5.5V (AVDD=4.5-5.5V, DVDD=2.7-3.6V, TA = -40 to 125°C)
• Operating voltage, digital range from 2.7 to 3.6V (AVDD=4.5-5.5V, DVDD=2.7-3.6V, TA = -40-125°C)
• Differential voltage reference input pins
• 28 pin SSOP package, extended operating temperature range from -40 to 125°C

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