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90E21 Datasheet(PDF) 44 Page - Integrated Device Technology

Part # 90E21
Description  Single-Phase High-Performance Wide-Span Energy Metering IC
PDF  57 Pages
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Manufacturer  IDT [Integrated Device Technology]
Direct Link  http://www.idt.com
Logo IDT - Integrated Device Technology

90E21 Datasheet(HTML) 44 Page - Integrated Device Technology

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90E21/22/23/24
SINGLE-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
Register
44
January 10, 2012
Smean
L Line Mean Apparent Power
Irms2
N Line Current rms
Address: 4FH
Type: Read
Default Value: 0000H
Bit
Name
Description
15 - 0
Smean[15:0]
L line mean apparent power.
Complement, MSB is always '0'. Data format is XX.XXX, which corresponds to 0~+32.767kVA.
If current is specially handled by MCU, the power of the 90E21/22/23/24 and the actual power have the same multiple relation-
ship as the current.
Address: 68H
Type: Read
Default Value: 0000H
Bit
Name
Description
15 - 0
Irms2[15:0]
N line current rms.
Data format is XX.XXX, which corresponds to 65.535A.
For cases when the current exceeds 65.535A, it is suggested to be handled by MCU in application. For example, the register
value can be calibrated to 1/2 of the actual value during calibration, then multiplied by 2 in application.
15
14
13
12
11
10
9
8
Smean15
Smean14
Smean13
Smean12
Smean11
Smean10
Smean9
Smean8
765
432
1
0
Smean7
Smean6
Smean5
Smean4
Smean3
Smean2
Smean1
Smean0
15
14
13
12
11
10
9
8
Irms2_15
Irms2_14
Irms2_13
Irms2_12
Irms2_11
Irms2_10
Irms2_9
Irms2_8
765
432
1
0
Irms2_7
Irms2_6
Irms2_5
Irms2_4
Irms2_3
Irms2_2
Irms2_1
Irms2_0



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