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參數資料
| 型號： | SA9904BSA |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Three Phase Power / Energy IC with SPI Interface |
| 中文描述： | 三相功率/能量芯片，SPI接口 |
| 文件頁數： | 1/12頁 |
| 文件大小： | 106K |
| 代理商： | SA9904BSA |
FEATURES
Bi-directional active and reactive power/energy
measurement
RMSVoltageandfrequencymeasurement
IndividualPhaseinformation
SPIcommunicationbus
MeetstheIEC61036SpecificationrequirementsforClass1
ACWatthourmeters
sames
Three Phase Power / Energy IC with SPI
Interface
SA9904B
1/12
Meets the IEC 61268 Specification requirements for
Class2VARhourmeters
ProtectedagainstESD
Totalpowerconsumptionratingbelow60mW
Usescurrenttransformersforcurrentsensing
Operatesoverawidetemperaturerange
Precisionon-chipvoltagereference
DESCRIPTION
The SAMES SA9904B is a three phase bi-directional
energy/power metering integrated circuit that
designed to measure active and reactive energy, RMS mains
voltage and frequency. The SA9904B has an integrated SPI
serial interface for communication with a micro-controller.
Measured values for active and reactive energy, the mains
voltage and frequency for each phase are accessible through
the SPIinterfacefrom24bitregisters.TheSA9904Bactiveand
reactive energy registers are capable of holding at least 52
seconds of accumulated energy at full load. A
zerocrossoverisavailableontheF50output.
has been
mains voltage
The SA9904B includes all the required functions for three-
phasepowerandenergymeasurementsuchas oversampling
A/Dconvertersforthevoltageandcurrentsenseinputs,power
calculation and energy integration. This innovative universal
threephasepower/energymeteringintegratedcircuitisideally
suitedforenergycalculationsinapplicationssuchaselectricity
dispensing systems, residential metering and factory energy
meteringandcontrol.
The SA9904B integrated circuit is available in 20 pin dual-in-
line plastic (PDIP20), as well as 20 pin small outline (SOIC20)
packagetypes.
Figure 1: Block diagram
SPEC-0447 (REV. 6)
04-07-03
IVP1
IVP2
IVP3
SPI
VOLTAGE
REF.
DI
VSS
VDD
DO
F50
VREF
OSC2
OSC1
GND
ACTIVE
REACTIVE
RMS
VOLTAGE
MAINS
FREQ.
CURRENT
ADC
VOLTAGE
ADC
SCK
CS
OSC
IIP1
IIN2
IIP2
IIN2
IIP3
IIN3
DR-01641
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