Datasheet > MAX71020_13

MAX71020_13

更新时间： 2024-11-29 12:23:55

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
35页	1103K
描述
Single-Chip Electricity Meter AFE

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MAX71020_13 数据手册

MAX71020

Single-Chip Electricity Meter AFE

General Description

Features

S 0.1% Accuracy Over 2000:1 Current Range

The MAX71020 is a single-chip analog front-end (AFE)

for use in high-performance revenue meters. It contains

the compute engine (CE) found in Maxim Integrated’s

fourth-generation meter system-on-chip (SoC) and an

improved analog-to-digital converter (ADC), and inter-

faces to the host controller of choice over a SPI interface.

S Exceeds IEC 62053/ANSI C12.20 Standards

S Two Differential Current Sensor Inputs

S Two Voltage Sensor Inputs

S Selectable Gain of 1 or 8.9 for One Current Input

to Support a Shunt

The MAX71020 comes in a 28-pin TSSOP package.

S High-Speed Wh/VARh Pulse Outputs with

Programmable Width

S Up to Four Pulse Outputs with Pulse Count

S Four-Quadrant Metering

S Digital Temperature Compensation

S Independent 32-Bit Compute Engine

Ordering Information appears at end of data sheet.

S 45Hz to 65Hz Line Frequency Range with Same

Calibration

For related parts and recommended products to use with this part,

refer to www.maximintegrated.com/MAX71020.related.

S Phase Compensation ( 10ꢀ°

S Four Multifunction DIO Pins

S SPI Interface

S -40°C to +85°C Industrial Temperature Range

S 28-Pin TSSOP Lead(Pb)-Free Package

Typical Operating Circuit

NEUTRAL

LOAD

NOTE: THIS SYSTEM IS REFERENCED TO LINE VOLTAGE

SHUNT

LINE

NEUTRAL

LINE

POWER SUPPLY

RESISTOR-

DIVIDER

MUX AND ADC

IAP

GNDA GNDD

REGULATOR

3P3A

3P3SYS

LINE

IAN

MAX71020

IBP

IBN

TEMPERATURE SENSOR

COMPUTE ENGINE

REF

POWER-FAULT

COMPARATOR

DIO, PULSES

OSCILLATOR/PLL

XIN

HOST

SPI

9.8304MHz

INTERFACE

XOUT

For pricing, delivery, and ordering information, please contact Maxim Direct at

1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.

19-6400; Rev 1; 1/13

12 3 4 5 6 7...35

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