The MCP3901 AFE features high-accuracy, dual 16-/24-bit Delta-Sigma Analog-to-Digital Converters.
Microchip Technology (Chandler, AZ) has announced its next-generation Analog Front End (AFE) for metering applications. The MCP3901 AFE features high-accuracy, dual 16-/24-bit Delta-Sigma Analog-to-Digital Converters (ADCs) with up to 91 dB Signal to Noise and Distortion (SINAD); internal Programmable Gain Amplifiers (PGAs) and voltage reference; phase-delay compensation; and a modulator output block, enabling more precise measurements than competitive solutions. Additional features include:
- 2 synchronous sampling 16/24-bit resolution Delta-Sigma A/D Converters with proprietary multi-bit architecture.
- 91 dB SINAD, -104 dBc THD (up to 35th harmonic), 109 dB SFDR for each channel.
- Programmable data rate up to 64 ksps.
- Ultra low power shutdown mode with <2 μA.
- -133 dB Crosstalk between the two channels.
- Low Drift Internal Voltage Reference: 12 ppm/°C.
- Differential Voltage Reference Input Pins.
- High Gain PGA on each channel (up to 32 V/V).
- Phase Delay Compensation between the 2 channels with 1 μs time resolution.
- Separate Modulator outputs for each channel.
- High-Speed Addressable 20 MHz SPI Interface with Mode 0,0 and 1,1 compatibility.
- Independent analog and digital power supplies 4.5-5.5V AVDD, 2.7-5.5V DVDD.
- Low Power consumption (14 mW typical at 5V).
- Available in small 20-lead QFN and SSOP packages.
- Industrial Temperature Range -40° to +85°C.
For more information visit www.microchip.com
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