- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄298814 > ADE7753ARSZRL (ANALOG DEVICES INC) SPECIALTY ANALOG CIRCUIT, PDSO20 PDF資料下載
參數(shù)資料
| 型號： | ADE7753ARSZRL |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 模擬信號調(diào)理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO20 |
| 封裝： | ROHS COMPLIANT, MO-150AE, SSOP-20 |
| 文件頁數(shù)： | 9/60頁 |
| 文件大?。?/td> | 938K |
| 代理商： | ADE7753ARSZRL |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁當(dāng)前第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁
ADE7753
Rev. C | Page 17 of 60
DC COMPONENT (INCLUDING ERROR TERM)
IS EXTRACTED BY THE LPF FOR REAL
POWER CALCULATION
FREQUENCY (RAD/S)
IOS × V
VOS × I
VOS × IOS
V
× I
2
0
2
ω
02875-0-033
Figure 33. Effect of Channel Offsets on the Real Power Calculation
The contents of the offset correction registers are 6-bit, sign and
magnitude coded. The weight of the LSB depends on the gain
setting, i.e., 1, 2, 4, 8, or 16. Table 6 shows the correctable offset
span for each of the gain settings and the LSB weight (mV) for
the offset correction registers. The maximum value that can be
written to the offset correction registers is ±31d—see Figure 34.
Figure 34 shows the relationship between the offset correction
register contents and the offset (mV) on the analog inputs for a
gain setting of 1. In order to perform an offset adjustment, the
analog inputs should be first connected to AGND, and there
should be no signal on either Channel 1 or Channel 2. A read
from Channel 1 or Channel 2 using the waveform register
indicates the offset in the channel. This offset can be canceled
by writing an equal and opposite offset value to the Channel 1
offset register, or an equal value to the Channel 2 offset register.
The offset correction can be confirmed by performing another
read. Note when adjusting the offset of Channel 1, one should
disable the digital integrator and the HPF.
Table 6. Offset Correction Range—Channels 1 and 2
Gain
Correctable Span
LSB Size
1
±50 mV
1.61 mV/LSB
2
±37 mV
1.19 mV/LSB
4
±30 mV
0.97 mV/LSB
8
±26 mV
0.84 mV/LSB
16
±24 mV
0.77 mV/LSB
CH1OS[5:0]
SIGN + 5 BITS
+50mV
OFFSET
ADJUST
0x3F
0x00
0x1F
–50mV
0mV
SIGN + 5 BITS
01,1111b
11,1111b
02875-0-034
Figure 34. Channel 1 Offset Correction Range (Gain = 1)
The current and voltage rms offsets can be adjusted with the
IRMSOS and VRMSOS registers—see Channel 1 RMS Offset
sections.
di/dt CURRENT SENSOR AND DIGITAL INTEGRATOR
A di/dt sensor detects changes in magnetic field caused by ac
current. Figure 35 shows the principle of a di/dt current sensor.
MAGNETIC FIELD CREATED BY CURRENT
(DIRECTLY PROPORTIONAL TO CURRENT)
+ EMF (ELECTROMOTIVE FORCE)
– INDUCED BY CHANGES IN
MAGNETIC FLUX DENSITY (di/dt)
02875-0-035
Figure 35. Principle of a di/dt Current Sensor
The flux density of a magnetic field induced by a current is
directly proportional to the magnitude of the current. The
changes in the magnetic flux density passing through a
conductor loop generate an electromotive force (EMF) between
the two ends of the loop. The EMF is a voltage signal, which is
proportional to the di/dt of the current. The voltage output
from the di/dt current sensor is determined by the mutual
inductance between the current-carrying conductor and the
di/dt sensor. The current signal needs to be recovered from the
di/dt signal before it can be used. An integrator is therefore
necessary to restore the signal to its original form. The ADE7753
has a built-in digital integrator to recover the current signal
from the di/dt sensor. The digital integrator on Channel 1 is
switched off by default when the ADE7753 is powered up.
Setting the MSB of CH1OS register turns on the integrator.
of the digital integrator.
FREQUENCY (Hz)
10
GA
IN
(d
B
)
0
–10
–20
–30
–40
–50
102
103
02875-0-036
Figure 36. Combined Gain Response of the
Digital Integrator and Phase Compensator
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ADEX-R10+ | 10 MHz - 1000 MHz RF/MICROWAVE DOUBLE BALANCED MIXER, 8.3 dB CONVERSION LOSS-MAX |
| ADF08S | SLIDE DIP SWITCH-8SWITCHES, SPST, LATCHED,SURFACE MOUNT-STRAIGHT |
| ADF09A-KG-TAXB3-R | 9 CONTACT(S), MALE, D SUBMINIATURE CONNECTOR, SOLDER |
| ADF7011BRUZ-RL7 | SPECIALTY TELECOM CIRCUIT, PDSO24 |
| ADF7011BRUZ-RL | SPECIALTY TELECOM CIRCUIT, PDSO24 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ADE7753-ARSZRL | 制造商:Analog Devices 功能描述: |
| ADE7753XRS | 制造商:Analog Devices 功能描述: |
| ADE7754 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Poly-phase Multi-Function Energy Metering IC with Serial Port |
| ADE7754AR | 制造商:Analog Devices 功能描述:Energy Measurement 24-Pin SOIC W 制造商:Rochester Electronics LLC 功能描述:THREE PHASE ENERGY METER IC W/WATT & VA - Bulk 制造商:Analog Devices 功能描述:IC ENERGY METER |
| ADE7754ARRL | 制造商:Analog Devices 功能描述:Energy Measurement 24-Pin SOIC W T/R 制造商:Rochester Electronics LLC 功能描述:THREE PHASE ENERGY METER IC W/WATT & VA - Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。