MCP3909 datasheet(1/44 Pages) MICROCHIP

部件名	MCP3909

功能描述	Energy Metering IC with SPI Interface and Active Power Pulse Output

PDF	44 Pages

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制造商	MICROCHIP [Microchip Technology]

网页	http://www.microchip.com

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DS22025B-page 1

MCP3909

Features

• Supports IEC 62053 International Energy

Metering Specification and legacy IEC 1036/

61036/687 Specifications

• Digital waveform data access through SPI

interface

- 16-bit Dual ADC output data words

- 20-bit Multiplier output data word

• Dual functionality pins support serial interface

access and simultaneous Active Power Pulse

Output

• Two 16-bit second order delta-sigma

Analog-to-Digital Converters (ADCs) with multi-bit

DAC

- 81 dB SINAD (typ.) both channels

• 0.1% typical active energy measurement error

over 1000:1 dynamic range

• PGA for small signal inputs supports low value

shunt current sensor

• Ultra-low drift on-chip reference:

15 ppm/°C (typical)

• Direct drive for electromagnetic mechanical

counter and two-phase stepper motors

• Low IDD of 4 mA (maximum)

• Tamper output pin for negative power indication

• Industrial Temperature Range: -40°C to +85°C

Description

The MCP3909 device is an energy-metering IC

designed to support the IEC 62053 international

metering standard specification. It supplies a frequency

output proportional to the average active real power,

with simultaneous serial access to ADC channels and

multiplier output data. This output waveform data is

available at up to 14 kHz with 16-bit ADC output and

20-bit multiplier output words. The 16-bit, delta-sigma

ADCs allow for a wide range of IB and IMAX currents

and/or small shunt (<200 µOhms) meter designs.

A no-load threshold block prevents any current creep

measurements for the active power pulse outputs.

The integrated on-chip voltage reference has an

ultra-low temperature drift of 15 ppm per degree C.

This accurate energy metering IC with high field

reliability is available in the industry standard 24-lead

SSOP pinout.

Package Type

Functional Block Diagram

FOUT0

DGND

NEG / SDO

1

2

3

4

24

23

22

21

20

19

18

17

5

6

7

8

FOUT1

NC

CLKOUT

CLKIN

DVDD

HPF

AVDD

NC

CH0+

CHO-

CH1-

CH1+

HFOUT

16

9

G0

MCLR

15

14

10

11

G1

F0 / CS

REFIN / OUT

AGND

13

12

F1 / SDI

F2 / SCK

24-Lead

SSOP

16-bit

DS ADC

+

–

CH0+

CH0-

Reference

2.4V

+

–

CH1+

CH1-

HPF1

LPF1

DTF

conversion

REFIN/

FOUT1

HFOUT

G0 G1

F2/SCK F1/SDI

FOUT0

OSC1 OSC2

OUT

NEG/SDO

HPF

F0/CS

Multi-level

16-bit

DS ADC

Multi-level

X

PGA

Serial Control

Buffers

And Output

Stepper

Motor

Output Drive

Active Power

SPI

Interface

Dual Functionality Pin

Control

20

16

MCLR

Sub-system

Clock

for

Active Power

HPF1

4k

Ω

Energy Metering IC with SPI Interface and Active Power Pulse Output

类似零件编号 - MCP3909

制造商	部件名	数据表	功能描述
Microchip Technology	MCP3909	1Mb / 40P	Energy Metering IC with SPI Interface and Active Power Pulse Output 2006
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	MCP3909-I/SS	806Kb / 44P	Energy Metering IC with SPI Interface and Active Power Pulse Output 11/29/11
	MCP3909T-E/SS	806Kb / 44P	Energy Metering IC with SPI Interface and Active Power Pulse Output 11/29/11

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