Maxim MAXREFDES38#

Управление питаниемСчетчик энергии/мощностиСовет(ы)

Overview

Maxim's MAXREFDES38 Reference Design provides the low-power, high-speed, high-accuracy analog front-end designed for the ECT/EPT or current fault sensor application. It features a low-power, 16-bit, high-accuracy, three-channel analog input. Input channels can be configured as �3VP-P single-ended or �6VP-P differential. The MAXREFDES38 design integrates a three-channel analog switch (MAX14531E); a quad precision low-power buffer (MAX44245); a 16-bit fully differential ADC (MAX11901); an ultra-high-precision, 3V voltage reference (MAX6126); a low-noise precision op amp (MAX44241); a STM32L1 microcontroller; a supervisory circuit (MAX16058); a 64kB SRAM, a FTDI USB-UART bridge; a dual-output step-down DC-DC converter (MAX1775); a switched-capacitor voltage converter (MAX1044); and -3V, 1.8V, 3.3V, 3.38V, 4.5V power rails (MAX1735/MAX8891/MAX8881/MAX8902B/MAX16910). The entire system typically operates at less than 85mW and fits into a space roughly the size of a credit card.

Features