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Details, datasheet, quote on part number:SA9122E
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| Part: | SA9122E |
| Description: | Single Phase Power/energy Metering ic With Instantaneous Pulse Output And 64 Segment LCD Driver on Chip |
| Company: | South African Micro-Electronic Systems |
| Datasheet: | Download SA9122E datasheet File size : 205 kB |
| Request For quote: | Find where to buy SA9122E
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Datasheet text preview:
SA9122E SINGLE PHASE UNIDIRECTIONAL POWER/ENERGY METERING IC WITH SEPERATE 64 SEGMENT LCD DRIVER
FEATURES
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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
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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
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DESCRIPTION
T h e SAMES SA9122E Single Phase unidirectional active Power/Energy metering integrated circuit includes a seperate onchip 64 segment Liquid Crystal Display driver. The power/energy metering circuit generates a pulse rate output, proportional to the power c o n s u m p t i o n , while the LCD driver is programmable via a serial interface. The method of power calculation takes the power factor into account. Energy consumption 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 µ-controller employed, and is ideally suited for applications 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 F O U T 2 39 F O U T 1 38 O S C 1 37 O S C 2 36 S [ 1 5 ] 35 S [ 1 4 ] 34 S [ 1 3 ] 33 S [ 1 2 ] 32 S [ 1 1 ] 31 S [ 1 0 ] 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
SA9122E
S[15] OSC2 OSC1 FOUT1 FOUT2 N.C. RX VS S CIP CIN COP
S[14] S[13] S[12] S[11] S[10] N.C. S[9] S[8] S[7] S[6] S[5]
39 38 37 36 35 34 33 32 31 30 29
40 41 42 43 44 1 2 3 4 5 6
28 27 26 25 24 23 22 21 20 19 18
S[4] S[3] S[2] S[1] S[0] N.C. R[3] R[2] R[1] R[0] VD D
7
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DR-00934
Package: PLCC-44 BLOCK DIAGRAM
VD D V SS
IIP
CON IVN IIP IIN GND N.C.
POWER
IIN
VREF CPON CPOP CPIN CPIP
ANALOG SIGNAL PROCE-
INTEGRATOR
POWER TO FREQUENCY
FOUT1 FOUT2
S[15]
SRAM VOLTAGE REF.
SEGMENT DRIVERS
S[0]
IVP GND
SSING
R[3]
OSC
SERIAL INTERFACE
BACKPLANE DRIVERS
R[0]
DR-00933
VREF
OSC1
OSC2
RX
2/12
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SA9122E ABSOLUTE MAXIMUM RATINGS* Parameter Symbol Supply Voltage VDD -VSS Current on any pin IPIN Storage Temperature TSTG Operating Temperature TO
Min -0.3 -150 -40 -40
Max 6.0 +150 +125 +85
Unit V mA °C °C
* Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. This is a stress rating only. Functional operation of the device at these or any other condition above those indicated in the operational sections of this specification, is not implied. Exposure to Absolute Maximum Ratings for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (VDD = 2.5V, VSS = -2.5V, over the temperature range -10°C to +70°C#, unless otherwise specified.) Parameter Supply Voltage: Positive Supply Voltage: Negative Supply Current: Positive Supply Current: Negative Symbol M i n V DD VSS I DD ISS 2.25 -2.75 5 5 Typ Max 2.75 -2.25 7 7 Unit C o n d i t i o n V V mA mA
Current Sensor Inputs (Differential) Input Current Range III -25 +25 µA Peak value
Voltage Sensor Input (Asymmetrical) Input Current Range Pins FOUT1, FOUT2 Output Low Voltage Output High Voltage Pulse Rate FOUT1 FOUT2 1 I IV VOL VOH fP fP2 -25 +25 VSS+1 VDD-1 10 0.5 fP/290
3/12
µA V V Hz Hz
Peak value IOL = 5mA IOH = -2mA Specified linearity Min and max limits
1160 3000
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