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參數(shù)資料
| 型號： | ADE7763ARS |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 電源管理 |
| 英文描述： | Single-Phase Active and Apparent Energy Metering IC |
| 中文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO20 |
| 封裝： | MO-150AE, SSOP-20 |
| 文件頁數(shù)： | 21/56頁 |
| 文件大?。?/td> | 1328K |
| 代理商： | ADE7763ARS |
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ADE7763
Rev. A | Page 21 of 56
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{GAIN[2:0]}
ANALOG
INPUT
RANGE
DIGITAL
INTEGRATOR*
HPF
ADC 1
REFERENCE
2.42V, 1.21V, 0.6V
V1
0V
0.5V, 0.25V,
0.125V, 62.5mV,
31.3mV, 15.6mV,
CHANNEL 1
(CURRENT WAVEFORM)
DATA RANGE
ACTIVE AND REACTIVE
POWER CALCULATION
WAVEFORM SAMPLE
REGISTER
CURRENT RMS (IRMS)
CALCULATION
50Hz
V1P
V1N
PGA1
V1
{GAIN[4:3]}
*WHEN DIGITAL INTEGRATOR IS ENABLED, FULL-SCALE OUTPUT DATA IS ATTENUATED
DEPENDING ON THE SIGNAL FREQUENCY BECAUSE THE INTEGRATOR HAS A –20dB/DECADE
FREQUENCY RESPONSE. WHEN DISABLED, THE OUTPUT IS NOT ATTENUATED FURTHER.
ADC OUTPUT
WORD RANGE
0xD 7AE4
0x0 0000
0x28 51EC
0xD 7AE4
0x00 0000
0x28 51EC
CHANNEL 1
(CURRENT WAVEFORM)
DATA RANGE AFTER
INTEGRATOR (50Hz)
0xEI 08C4
0x00 0000
0x1E F73C
60Hz
CHANNEL 1
(CURRENT WAVEFORM)
DATA RANGE AFTER
INTEGRATOR (60Hz)
0xE6 31F8
0x00 0000
0x19 CE08
0
dt
Figure 43. ADC and Signal Processing in Channel 1
Channel 1 Sampling
The waveform samples may be routed to the waveform register
(MODE[14:13] = 1, 0) for the system master (MCU) to read. In
waveform sampling mode, set the WSMP bit (Bit 3) in the
interrupt enable register to Logic 1. The active and apparent
power as well as the energy calculation remain uninterrupted
during waveform sampling.
In waveform sampling mode, choose one of four output sample
rates using Bits 11 and 12 of the mode register (WAVSEL 1, 0).
The output sample rate can be 27.9 kSPS, 14 kSPS, 7 kSPS, or
3.5 kSPS—see the Mode Register (0X09) section. The interrupt
request output, IRQ, signals a new sample availability by going
active low. The timing is shown in Figure 44. The 24-bit wave-
form samples are transferred from the ADE7763 one byte (eight
bits) at a time, with the most significant byte shifted out first.
The 24-bit data-word is right justified—see the Serial Interface
section. The interrupt request output IRQ stays low until the
interrupt routine reads the reset status register—see the
Interrupts section.
CHANNEL 1 DATA
(24 BITS)
READ FROM WAVEFORM
0
0 0 01 HEX
SIGN
IRQ
SCLK
DIN
DOUT
0
Figure 44. Waveform Sampling Channel 1
Channel 1 RMS Calculation
The root mean square (rms) value of a continuous signal V(t) is
defined as
VRMS
=
∫
0
×
T
dt
)
t
V
T
2
(
1
(2)
For time sampling signals, the rms calculation involves squaring
the signal, taking the average, and obtaining the square root:
VRMS
=
∑
=
i
×
N
i
V
N
1
2
)
(
1
(3)
The ADE7763 simultaneously calculates the rms values for
Channel 1 and Channel 2 in different registers. Figure 45 shows
the detail of the signal processing chain for the rms calculation
on Channel 1. The Channel 1 rms value is processed from the
samples used in the Channel 1 waveform sampling mode. The
Channel 1 rms value is stored in an unsigned, 24-bit register
(IRMS). One LSB of the Channel 1 rms register is equivalent to
1 LSB of a Channel 1 waveform sample. The update rate of the
Channel 1 rms measurement is CLKIN/4.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADE7763ARSRL | 制造商:Analog Devices 功能描述:Energy Measurement 20-Pin SSOP T/R |
| ADE7763ARSZ | 功能描述:IC ENERGY METERING 1PHASE 20SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 能量測量 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:* |
| ADE7763ARSZ | 制造商:Analog Devices 功能描述:IC, SINGLE PHASE ENERGY METER, SSOP-20 |
| ADE7763ARSZRL | 功能描述:IC ENERGY METERING 1PHASE 20SSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 能量測量 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:* |
| ADE7763ARSZRL | 制造商:Analog Devices 功能描述:IC, SINGLE PHASE ENERGY METER, SSOP-20 |
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