Datasheet

90E36A POLY-PHASE HIGH-PERFORMANCE WIDE-SPAN ENERGY METERING IC
Register 47 April 2, 2013
DetectTh3
Channel 3 Current Threshold in Detection Mode
The calibration method is that, the user program the detection threshold and test with the standard input signal until the output trips.
6.3.2 PARTIAL MEASUREMENT MODE REGISTERS
PMOffsetA
Ioffset for phase A in Partial Measurement mode
PMOffsetB
Ioffset for phase B in Partial Measurement mode
PMOffsetC
Ioffset for phase C in Partial Measurement mode
Address: 13H
Type: Read/Write
Default Value: 0000H
Bit Name Description
15 - Reserved.
14:8 CalCodeN
Channel 3 current negative detector calculation code.
Code mapping:
7'b000-0000, Vc=-4.28mV=-3.03mVrms (Vc is the threshold of low power computation)
7'b111-1111, Vc=12.91mV=9.14mVrms
DAC typical resolution is [12.91-(-4.28)]/127=135.4μV=95.7μVrms
7-Reserved.
6:0 CalCodeP
Channel 3 current positive detector calculation code.
Code mapping:
7'b000-0000, Vc=-4.28mV=-3.03mVrms (Vc is the threshold of low power computation)
7'b111-1111, Vc=12.91mV=9.14mVrms
DAC typical resolution is [12.91-(-4.28)]/127=135.4μV=95.7μVrms
Address: 14H
Type: Read/Write
Default Value: 0000H
Bit Name Description
15-14 - Reserved.
13:0 PMOffsetA Phase A current offset in Partial Measurement mode.
Address: 15H
Type: Read/Write
Default Value: 0000H
Bit Name Description
15-14 - Reserved.
13:0 PMOffsetB Phase B current offset in Partial Measurement mode.
Address: 16H
Type: Read/Write
Default Value: 0000H
Bit Name Description
15-14 - Reserved.
13:0 PMOffsetC Phase C current offset in Partial Measurement mode.