Datasheet > SA9904B_17

SA9904B_17

更新时间： 2024-02-06 16:10:00

品牌	Logo	应用领域
SAMES		/
页数	文件大小	规格书
18页	552K
描述
Three Phase Multifunction Energy Metering IC

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中文翻译

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数据手册

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SA9904B_17 数据手册

Three Phase Multifunction Energy Metering IC

with SPI Interface

SA9904B

FEATURES



Meets the IEC 61268 Specification requirements for

Class 2 AC VAR hour meters



Bidirectional active and reactive power/energy

measurement



Protected against ESD



RMS voltage and frequency measurement

Individual Phase information

SPI communication bus

Meets the IEC 61036 Specification requirements for

Class 1 AC Watt hour meters

Total power consumption rating below 60mW

Uses current transformers for current sensing

Operates over a wide temperature range

Precision on-chip voltage reference

Measures AC inputs only

DESCRIPTION

The SA9904B is a three phase bidirectional energy/power

metering integrated circuit that has been designed to

measure active and reactive energy, RMS mains voltage and

mains frequency. The SA9904B has an integrated SPI serial

interface for communication with a microcontroller. Measured

values for active and reactive energy, the mains voltage and

frequency for each phase are accessible through the SPI

interface from 24 bit registers. The SA9904B active and

reactive energy registers are capable of holding at least 52

seconds of accumulated energy at full load. A mains voltage

zero crossover is available on the F50 output.

The SA9904B includes all the required functions for three

phase power and energy measurement such as

oversampling A/D converters for the voltage and current

sense inputs, power calculation and energy integration. This

innovative universal three phase power/energy metering

integrated circuit is ideally suited for energy calculations in

applications such as electricity dispensing systems,

residential metering and factory energy metering and control.

The SA9904B integrated circuit is available in a 20 pin small

outline (SOIC20) RoHS compliant package.

VDD

POWER ON

RESET

IIP1-3

IIN1-3

DIGITAL

OUTPUT

SIGNAL PROCESSING

CURRENT

CHANNEL

ADC

Instantaneous

power

Instantaneous

power

ACTIVE POWER

REACTIVE POWER

90 DEGREE

PHASE SHIFT

FREQUENCY

F50

IVP1-3

AGND

DIGITAL

OUTPUT

VOLTAGE

CHANNEL

ADC

VRMS

CALCULATION

VRMS

REPEATED 3 TIMES, ONCE FOR EACH DEVICE CHANNEL

VOLTAGE REFERENCE

AND

OSCILLATOR

AND

SPI INTERFACE

CURRENT BIASING

TIMING

VREF

OSC1

OSC2

SCK

VSS

Figure 1: Block diagram

SPEC-0447 (REV. 7)

29-09-2017

1/18

12 3 4 5 6 7...18

中文翻译

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与SA9904B_17相关器件

型号	品牌	获取价格	描述	数据表
SA9904BPA	ETC	获取价格	Three Phase Power / Energy IC with SPI Interface
SA9904BSA	ETC	获取价格	Three Phase Power / Energy IC with SPI Interface
SA9904BSAR	SAMES	获取价格	Three Phase Multifunction Energy Metering IC
SA9V0	FAIRCHILD	获取价格	500 Watt Transient Voltage Suppressors
SA9V0	LGE	获取价格	500W Transient Voltage Suppressor
SA9V0A	DIODES	获取价格	500W TRANSIENT VOLTAGE SUPPRESSOR
SA9V0A	FAIRCHILD	获取价格	Transient Voltage Suppressors
SA9V0A	LGE	获取价格	500W Transient Voltage Suppressor
SA9V0A-B	DIODES	获取价格	Trans Voltage Suppressor Diode, 500W, 9V V(RWM), Unidirectional, 1 Element, Silicon, DO-15
SA9V0ACA-HF	COMCHIP	获取价格	Axial Lead Transient Voltage Suppressor

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