Microchip MCP3903-E/SS

2465V2,7 В ~ 3,6 ВПоверхностный монтаж28-SSOP (0,209", ширина 5,30 мм)

Overview

The MCP3903-E/SS is a 6-channel Delta Sigma A/D Converter with analogue front end (AFE) contains three pairs made out of two synchronous sampling delta-sigma analogue-to-digital converters (ADC) with PGA, a phase delay compensation block, internal voltage reference and high-speed 10MHz 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 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. The communication is largely simplified with various continuous read modes that can be accessed by the direct memory access (DMA) of an microcontroller and with separate data ready pins that can directly be connected to the interrupt request (IRQ) input of an MCU.

Features

Six Synchronous Sampling 16/24-bit Resolution Delta-Sigma A/D Converters with Proprietary Multi-Bit Architecture

91 dB SINAD, -100 dBc Total Harmonic Distortion (THD) (up to 35th harmonic), 102 dB Spurious-free Dynamic Range (SFDR) for Each Channel

Programmable Data Rate up to 64 ksps

Ultra-Low-Power Shutdown Mode with <2 μA

-115 dB Crosstalk Between any Two Channels

Low Drift Internal Voltage Reference: 5 ppm/°C

Differential Voltage Reference Input Pins

High Gain PGA on Each Channel (up to 32 V/V)

Phase Delay Compensation Between Each Pair of Channels with 1 μs Time Resolution

High-Speed Addressable 10 MHz SPI Interface with Mode 0,0 and 1,1 Compatibility

Independent Analog and Digital Power Supplies 4.5V - 5.5V AVDD, 2.7V - 3.6V DVDD

Available in Small 28-lead SSOP Package

Extended Temperature Range: -40°C to +125°C

Applications

Energy Metering and Power Measurement

Portable Instrumentation

Medical and Power Monitoring