參數(shù)資料
型號(hào)： ADE7878ACPZ
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(yè)數(shù)： 53/96頁(yè)
文件大?。?/td> 1096K
代理商： ADE7878ACPZ
ADE7854/ADE7858/ADE7868/ADE7878
Rev. E | Page 57 of 96
The line cycle apparent energy accumulation mode is activated
by setting Bit 2 (LVA) in the LCYCMODE register. The apparent
energy accumulated over an integer number of zero crossings is
written to the xVAHR accumulation registers after the number
of zero crossings specified in LINECYC register is detected. When
using the line cycle accumulation mode, set Bit 6 (RSTREAD) of
the LCYCMODE register to Logic 0 because a read with the reset
of xVAHR registers is not available in this mode.
Phase A, Phase B, and Phase C zero crossings are, respectively,
included when counting the number of half line cycles by setting
Bits[5:3] (ZXSEL[x]) in the LCYCMODE register. Any combi-
nation of the zero crossings from all three phases can be used
for counting the zero crossing. Select only one phase at a time
for inclusion in the zero-crossings count during calibration.
For details on setting the LINECYC register and Bit 5 (LENERGY)
in the MASK0 interrupt mask register associated with the line
cycle accumulation mode, see the Line Cycle Active Energy
WAVEFORM SAMPLING MODE
The waveform samples of the current and voltage waveform,
the active, reactive, and apparent power outputs are stored
every 125 μs (8 kHz rate) into 24-bit signed registers that can be
accessed through various serial ports of the ADE7854/ADE7858/
ADE7868/ADE7878. Table 21 provides a list of registers and their
descriptions.
Table 21. Waveform Registers List
Register
Description
IAWV
Phase A current
VAWV
Phase A voltage
IBWV
Phase B current
VBWV
Phase B voltage
ICWV
Phase C current
VCWV
Phase C voltage
INWV
Neutral current, available in the ADE7868
and ADE7878 only
AVA
Phase A apparent power
BVA
Phase B apparent power
CVA
Phase C apparent power
AWATT
Phase A active power
BWATT
Phase B active power
CWATT
Phase C active power
AVAR
Phase A reactive power
BVAR
Phase B reactive power
CVAR
Phase C reactive power
Bit 17 (DREADY) in the STATUS0 register can be used to
signal when the registers listed in Table 21 can be read using
I2C or SPI serial ports. An interrupt attached to the flag can be
enabled by setting Bit 17 (DREADY) in the MASK0 register.
See the Digital Signal Processor section for more details on
Bit DREADY.
The ADE7854/ADE7858/ADE7868/ADE7878 contain a high
speed data capture (HSDC) port that is specially designed to
provide fast access to the waveform sample registers. Read the
HSDC Interface section for more details.
As stated in the Current Waveform Gain Registers section, the
serial ports of the ADE7854/ADE7858/ADE7868/ADE7878
work on 32-, 16-, or 8-bit words. All registers listed in Table 21
are transmitted signed extended from 24 bits to 32 bits (see
ENERGY-TO-FREQUENCY CONVERSION
The ADE7854/ADE7858/ADE7868/ADE7878 provide three
frequency output pins: CF1, CF2, and CF3. The CF3 pin is
multiplexed with the HSCLK pin of the HSDC interface. When
HSDC is enabled, the CF3 functionality is disabled at the pin.
CF1 and CF2 pins are always available. After initial calibration
at manufacturing, the manufacturer or end customer verifies
the energy meter calibration. One convenient way to verify the
meter calibration is to provide an output frequency propor-
tional to the active, reactive, or apparent powers under steady
load conditions. This output frequency can provide a simple,
single-wire, optically isolated interface to external calibration
equipment. Figure 70 illustrates the energy-to-frequency
conversion in the ADE7854/ADE7858/ADE7868/ADE7878.
The DSP computes the instantaneous values of all phase powers:
total active, fundamental active, total reactive, fundamental
reactive, and apparent. The process in which the energy is sign
accumulated in various xWATTHR, xVARHR, and xVAHR
registers has already been described in the energy calculation
and Apparent Energy Calculation. In the energy-to-frequency
conversion process, the instantaneous powers generate signals
at the frequency output pins (CF1, CF2, and CF3). One digital-
to-frequency converter is used for every CFx pin. Every converter
sums certain phase powers and generates a signal proportional
to the sum. Two sets of bits decide what powers are converted.
First, Bits[2:0] (TERMSEL1[2:0]), Bits[5:3] (TERMSEL2[2:0]),
and Bits[8:6] (TERMSEL3[2:0]) of the COMPMODE register
decide which phases, or which combination of phases, are added.
The TERMSEL1 bits refer to the CF1 pin, the TERMSEL2 bits
refer to the CF2 pin, and the TERMSEL3 bits refer to the CF3
pin. The TERMSELx[0] bits manage Phase A. When set to 1,
Phase A power is included in the sum of powers at the CFx
converter. When cleared to 0, Phase A power is not included.
The TERMSELx[1] bits manage Phase B, and the TERMSELx[2]
bits manage Phase C. Setting all TERMSELx bits to 1 means all
3-phase powers are added at the CFx converter. Clearing all
TERMSELx bits to 0 means no phase power is added and no
CF pulse is generated.
相關(guān)PDF資料
PDF描述
ADE7878ACPZ-RL Poly Phase Multifunction Energy Metering IC With Total And Fundamental Powers, No Of Pins: 40, Temperature Range: Ind
ADG529FTQ 4-CHANNEL, DIFFERENTIAL MULTIPLEXER, CDIP18
ADJ24006 POWER/SIGNAL RELAY, SPST, LATCHED, 0.042A (COIL), 6VDC (COIL), 250mW (COIL), THROUGH HOLE-STRAIGHT MOUNT
ADJ24012 POWER/SIGNAL RELAY, SPST, LATCHED, 0.021A (COIL), 12VDC (COIL), 250mW (COIL), THROUGH HOLE-STRAIGHT MOUNT
ADJ24024 POWER/SIGNAL RELAY, SPST, LATCHED, 0.01A (COIL), 24VDC (COIL), 250mW (COIL), THROUGH HOLE-STRAIGHT MOUNT
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADE7878ACPZ 制造商:Analog Devices 功能描述:IC MULTIFUNCTION ENERGY METERING LFCSP40
ADE7878ACPZ-RL 功能描述:IC ENERGY METERING 3PH 40LFCSP RoHS:是 類別:集成電路 (IC) >> PMIC - 能量測(cè)量 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:*
ADE7878XCPZ 制造商:Analog Devices 功能描述:POLY PHASE MULTIFUNCTION ENERGY METERING IC WITH TOTAL - Bulk
ADE7880 制造商:Analog Devices 功能描述:BOARD EVAL ENERGY METER ADE
ADE7880ACPZ 功能描述:IC ENERGY METERING 3PH 40LFCSP RoHS:是 類別:集成電路 (IC) >> PMIC - 能量測(cè)量 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:2,500 系列:*
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*