78M6612-IMR/F Maxim Integrated Products, 78M6612-IMR/F Datasheet - Page 88

• Manufacturer Part Number: 78M6612-IMR/F
• Description: IC POWER MEASUREMENT AC 68-QFN
• Manufacturer: Maxim Integrated Products

Specifications of 78M6612-IMR/F

• Mounting Style: SMD/SMT
• Package / Case: QFN-68
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

78M6612 Data Sheet
4.4.7.5 CE Calibration Parameters
The table below lists the parameters that are typically entered to effect calibration of measurement
accuracy.
4.4.7.6 Other CE Parameters
The table below shows CE parameters used for suppression of noise due to scaling and truncation
effects.
88
Address
Address
0x0A
0x0B
0x0C
0x0D
0x08
0x09
0x12
0x13
0x14
0x15
0x16
0x17
CE
CE
QUANT_VARA
QUANT_VARB
QUANT_IA
QUANT_IB
PHADJ_A
PHADJ_B
QUANTA
QUANTB
CAL_VA
CAL_VB
CAL_IA
CAL_IB
Name
Name
Default
16384
16384
16384
16384
Default
0
0
0
0
0
0
0
0
Description
These constants control the gain of their respective channels.
The nominal value for each parameters is 2
gain of each channel is directly proportional to its CAL
parameter. Thus, if the gain of a channel is 1% slow, CAL
should be scaled by 1/(1 – 0.01).
These two constants control the CT phase compensation. No
compensation occurs when PHADJ_X = 0. As PHADJ_X is
increased, more compensation (lag) is introduced. Range:
±2
PHADJ
PHADJ
Description
This parameter is added to the Watt calculation for element 1
to compensate for input noise and truncation.
LSB = VMAX * IMAX * 1.8541*10
This parameter is added to the Watt calculation for element 2
to compensate for input noise and truncation. Same LSB as
QUANTA.
This parameter is added to the VAR calculation for element 1
to compensate for input noise and truncation.
LSB = VMAX * IMAX * 1.8541*10
This parameter is added to the VAR calculation for element 2
to compensate for input noise and truncation. Same LSB as
for QUANT_VARA.
This parameter is added to compensate for input noise and
truncation in the squaring calculations for I
affects only I1SQSUM.
LSB = IMAX
This parameter is added to compensate for input noise and
truncation in the squaring calculations for I
affects only I2SQSUM.
Same LSB as for QUANT_IA.
15
– 1. If it is desired to delay the current by the angle Φ:
_
_
X
X
=
=
2
2
2
* 4.6351 * 10
20
20
. 0
. 0
1241
1487
. 0
. 0
02229
−
0155
−
. 0
. 0
009695
0131
-11
⋅
⋅
TAN
TAN
A
2
⋅
Φ
TAN
⋅
TAN
Φ
-10
-10
W
W
Φ
Φ
at 60 Hz
at 50 Hz
14
2
2
. QUANT_IA
. QUANT_IB
= 16384. The
DS_6612_001
Rev. 1.2