參數(shù)資料
型號(hào)： ADE7878ACPZ-RL
廠商： ANALOG DEVICES INC
元件分類： 模擬信號(hào)調(diào)理
英文描述： Poly Phase Multifunction Energy Metering IC With Total And Fundamental Powers, No Of Pins: 40, Temperature Range: Ind
中文描述： SPECIALTY ANALOG CIRCUIT, QCC40
封裝： 6 X 6 MM, ROHS COMPLIANT, MO-220WJJD, LFCSP-40
文件頁數(shù)： 54/96頁
文件大?。?/td> 1096K
代理商： ADE7878ACPZ-RL
ADE7854/ADE7858/ADE7868/ADE7878
Rev. E | Page 58 of 96
Second, Bits[2:0] (CF1SEL[2:0]), Bits[5:3] (CF2SEL[2:0]), and
Bits[8:6] (CF3SEL[2:0]) in the CFMODE register decide what
type of power is used at the inputs of the CF1, CF2, and CF3
converters, respectively. Table 22 shows the values that CFxSEL
can have: total active, total reactive (available in the ADE7858,
ADE7868, and ADE7878 only), apparent, fundamental active
(available in the ADE7878 only), or fundamental reactive
(available in the ADE7878 only) powers.
Table 22. CFxSEL Bits Description
CFxSEL
Description
Registers
Latched When
CFxLATCH = 1
000
CFx signal proportional to the
sum of total phase active
powers
AWATTHR,
BWATTHR,
CWATTHR
001
CFx signal proportional to the
sum of total phase reactive
powers (ADE7858/ADE7868/
ADE7878)
AVARHR, BVARHR,
CVARHR
010
CFx signal proportional to the
sum of phase apparent powers
AVAHR, BVAHR,
CVAHR
011
CFx signal proportional to the
sum of fundamental phase
active powers (ADE7878 only)
AFWATTHR,
BFWATTHR,
CFWATTHR
100
CFx signal proportional to the
sum of fundamental phase
reactive powers (ADE7878 only)
AFVARHR,
BFVARHR,
CFVARHR
101 to
111
Reserved
08
51
0-
05
0
DIGITAL SIGNAL
PROCESSOR
INSTANTANEOUS
PHASE A ACTIVE
POWER
INSTANTANEOUS
PHASE B ACTIVE
POWER
INSTANTANEOUS
PHASE C ACTIVE
POWER
TERMSELx BITS IN
COMPMODE
WTHR[47:0]
FREQUENCY
DIVIDER
27
VA
VAR
FWATT1
FVAR1
WATT
CFxSEL BITS
IN CFMODE
REVPSUMx BIT OF
STATUS0[31:0]
CFxDEN
ACCUMULATOR
CFx PULSE
OUTPUT
1FWATT AND FVAR FOR ADE7878 ONLY.
Figure 70. Energy-to-Frequency Conversion
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