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Microchip PIC18F87J72 单相电表解决方案

关键词:消费类电子 智能电表 单相电表

时间:2010-10-08 11:36:16       作者:Microchip       来源:PIC18F87J72

Microchip 公司的PIC18F87J72 是高性能MCU,采用nanoWatt技术,具有两路24位模拟前端(AFE),LCD驱动器。每路的SINAD为-90dB,THD为-101dBc,SFDR为103dB,低漂移内部基准电压(12 ppm/℃),可编程数据速率到64ksps,增益高达32V/V,目标应用在电表,功率测量和监视,手提仪表和医疗监视。本文介绍了PIC18F87J72主要特性,方框图,单相电表应用电路以及PIC18F87J72单相电表参考设计主要特性和电路图。

PIC18F87J72:80-Pin, High-Performance Microcontrollers with Dual Channel AFE, LCD Driver and nanoWatt Technology

This document contains device-specific information for the following devices:

• PIC18F86J72

• PIC18F87J72

This family combines the traditional advantages of all PIC18 microcontrollers – namely, high computational performance and a rich feature set – with a versatile on-chip LCD driver and a high-performance, high-accuracy analog front end. These features make the PIC18F87J72 family a logical choice for many high-performance power and metering applications where price is a primary consideration.

PIC18F87J72主要特性:

Analog Features:

• Dual-Channel, 24-Bit Analog Front End (AFE):

- 90 dB SINAD, -101 dBc THD (to 35th harmonic),103 dB SFDR for each channel

- 10 ppm INL

- Differential voltage input pins
..

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