Datasheet

71M6511/71M6511H
Single-Phase Energy Meter IC
DATA SHEET
NOVEMBER 2010
Page: 74 of 98 © 2005–2010 Teridian Semiconductor Corporation V2.7
A Maxim Integrated Products Brand
Other CE Parameters
The table below shows CE parameters used for suppression of noise due to scaling and truncation effects as well as scaling
factors.
CE
Address
Name Default Description
2F
22
QUANTA
QUANTB
0
0
These parameters are added to the Watt calculation to compensate for input
noise and truncation.
LSB=(VMAX*IMAX / IA_8) *7.4162*10
-10
W for phase A, and
LSB=(VMAX*IMAX / IB_8) *7.4162*10
-10
W for phase B
34
24
QUANT_VARA
QUANT_VARB
0
0
These parameters are added to the VAR calculation to compensate for input
noise and truncation.
LSB = (VMAX*IMAX / IA_8) * 7.4162*10
-10
W for phase A, and
LSB = (VMAX*IMAX / IB_8) * 7.4162*10
-10
W for phase B
35
23
QUANT_IA
QUANT_IB
0
0
These parameters are added to compensate for input noise and truncation in
the squaring calculations for I
2
and V
2
.
LSB=VMAX
2
*7.4162*10
-10
V
2
,
LSB= (IMAX
2
/IA_8
2
)*7.4162*10
-10
A
2
for phase A and
LSB= (IMAX
2
/IB_8
2
)*7.4162*10
-10
A
2
for phase B.
3B KVAR
6448
12880
Scale factor for the VAR calculation. The default value of
KVAR should never
need to be changed.
for
MUX_DIV = 1
for
MUX_DIV = 2