Microchip Technology Inc. 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 91dB 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. With its unique feature set, high-speed sample rates up to 64 kilosamples per second, and SPI interface, the MCP3901 AFE is ideal for a variety of single- and multi-phase metering, industrial and medical applications.
Integrated PGAs and a low-drift voltage reference enhance the MCP3901 AFE's ability to measure signals at very small levels, and reduce the number of external components needed. This enables smaller overall designs at lower costs. The phase-delay compensation block enables the MCP3901 AFE to compensate for differences in phase for three-phase energy-metering applications, while the SPI interface provides a simple connection to a microcontroller (MCU) and offers engineers more flexibility with their design. Additionally, through the SPI interface, designers can adjust the ADC oversampling ratio to control the resolution and sample rate as dictated by the needs of the application.
Example applications for the MCP3901 AFE include utility meters (e.g. single and multi-phase electricity meters); industrial (e.g. power monitoring and instrumentation); and medical applications (e.g. blood glucose meters, pulse oximeters).
Microchip Technology MCP3901 AFE
Microchip Technology
RELATED ARTICLES
Tee Up Your Multiprocessing Options
MCUs Feature Enhanced Mid-range 8-bit Core
Image Sensors with >1400mV/(lux-sec) Low-light Sensitivity Targeted at Mobile Phones, DSCs
Op Amp has Offset Calibration to 200μV
Microchip Technology Develops Inductive Touch Sensing Analog Front End
Online Tools Home in on Analog Design
