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SA9122EPA Datasheet

  • SA9122EPA

  • SINGLE PHASE UNIDIRECTIONAL POWER/ENERGY METERING IC WITH SE...

  • 12頁

  • SAMES

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SA9122E
SINGLE PHASE UNIDIRECTIONAL POWER/ENERGY
METERING IC WITH SEPERATE 64 SEGMENT LCD DRIVER
FEATURES
n
sames
Performs unidirectional power and
energy measurement
On-chip 64 segment LCD driver
Meets the IEC 521/1036 Specification
requirements for Class 1 AC Watt hour
meters
Total power consumption rating below
25 mW
n
Adaptable to different types of current
sensors
Operates over a wide temperature
range
Different pulse rate options available
for power information
LCD data input via a serial interface
n
n
n
n
n
n
DESCRIPTION
The SAMES SA9122E Single Phase
unidirectional active Power/Energy metering
integrated circuit includes a seperate on-
chip 64 segment Liquid Crystal Display driver.
The power/energy metering circuit generates
a pulse rate output, proportional to the power
consumption, while the LCD driver is
programmable via a serial interface.
The method of power calculation takes the
power factor into account. Energy consump-
tion is determined by the power measurement
being integrated over time.
The LCD driver is capable of driving 8 decimal
digits (7 segment) and 8 announciators on a
4 track multiplexed backplane display.
This innovative combination energy metering/
LCD display driver integrated circuit has
been designed to provide meter designers
with flexibility in the choice of the 碌-controller
employed, and is ideally suited for applica-
tions such as residential municipal metering
and factory energy metering and control.
The SA9122E integrated circuit is available
in both 40 pin dual-in-line plastic (DIP-40), as
well as 44 pin plastic leaded chip carrier
(PLCC-44) package types.
4362
PIN CONNECTIONS
RX
V SS
CIP
CIN
COP
CON
IVN
IIP
IIN
GND
VREF
CPON
CPOP
CPIN
CPIP
V DD
R[0]
R[1]
R[2]
R[3]
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
FOUT2
39
FOUT1
38
OSC1
37
OSC2
36
S[15]
35
S[14]
34
S[13]
33
S[12]
32
S[11]
31
S[10]
30
S[9]
29
S[8]
28
S[7]
27
S[6]
26
S[5]
25
S[4]
24
S[3]
23
S[2]
22
S[1]
21
S[0]
DR-00932
Package: DIP-40
1/12
PDS039-SA9122E-001
REV. A
19-09-1995

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