3-phase energy metering IC User Manual
Description
ATT7022B
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ATT7022B
Date: 2005-03-28 Rev: 1.
04
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Rev 1.
04
ATT7022B
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Page 2 of 48
4 5 5 6 8 9 9 10 11 11 11 12 12 13 13 14 14 14 14 15 15 15 15 15 15 16 16 16 17 19 19 23 30 31 33 40
Rev 1.
04
ATT7022B SPI 4.
1 SPI 4.
2 SPI 4.
3 SPI www.
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4 SPI 5.
1 5.
2
43 44 45 46 48 49
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Page 3 of 48
Rev 1.
04
ATT7022B
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• • • • • • • • • • • • • • • • • • • • • • • • • • • •
1.
1 (1000:1) 0.
1% 0.
2S 0.
5S IEC 62053-22 GB/T 17883-1998 2 3 IEC 62053-23 GB/T 17882-1999 / , 0.
5% 21 SPI MCU QFP44 +5V
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Page 4 of 48
Rev 1.
04
ATT7022B
1.
2 ATT7022B ATT7022B sigma-delta ADC www.
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26 ATT7022B CF1 CF2 ATT7022B CF3 CF4 ATT7022B RMS PQS CF3 CF4 ATT7022B SPI MCU SPI SPI ATT7022B 1.
3
OSCO OSCI SEL SIG RESET
V1P V1N V3P V3N V5P V5N V2P V2N V4P V4N V6P V6N V7P V7N ADC ADC
CF1 CF2 CF3 CF4 Revp DOUT CS SPI DIN SCLK
DSP
VCC AVCC VDD
ATT7022B
REFOUT REFCAP GND AGND
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Page 5 of 48
Rev 1.
04
ATT7022B
1.
4
G N D
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O S C O
O S C I
V C C
R E V P
V D D
D O U T
S D C I L N K
C S
V C C
44 43 42 41 40 39 38 37 36 35 34
RESET 1 SIG V1P V1N
2 3 4
33 VDD 32 NC 31 CF4 30 CF3 29 NC 28 CF2 27 CF1
REFCAP 5 V3P 6 V3N AGND V5P
7 8 9
ATT7022B
12 13 14 15 16 17 18 19 20 21 22
26 SEL 25
NC
V5N 10 REFOUT 11
24 TEST 23 GND
A V C C
V V 2 2 P N
A V V G 4 4 N P N D
A V C C
V 6 P
V 6 N
V 7 P
V 7 N
1 2
RESET SIG
ATT7022B 47K ATT7022B SIG MCU SPI SIG A Vpp 1.
5...
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