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參數資料
| 型號： | ADE7753 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Active and Apparent Energy Metering IC with di/dt sensor interface |
| 中文描述： | 主動與迪視電能計量IC / dt的傳感器接口 |
| 文件頁數： | 10/38頁 |
| 文件大小： | 449K |
| 代理商： | ADE7753 |
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ADE7753
–10–
REV. PrF 10/02
PRELIMINARY TECHNICAL DATA
Waveform register will give an indication of the offset in the
channel. T his offset can be canceled by writing an equal and
opposite offset value to the relevant offset register. T he 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.
CH1OS[5:0]
00h
1Fh
3Fh
+50mV
Offset
Adjust
-50mV
0mV
01, 1111b
11, 1111b
Sign + 5 Bits
Sign + 5 Bits
Figure 4– Channel Offset Correction Range (Gain = 1)
G ain
C orrectable Span
LSB Size
1
2
4
8
16
±50mV
±37mV
±30mV
±26mV
±24mV
1.61mV /L SB
1.19mV /L SB
0.97mV /L SB
0.84mV /L SB
0.77mV /L SB
Table II
Offset Correction range
di/dt CURRE NT SE NSOR AND DIGIT AL INT E GRAT OR
di/dt sensor detects changes in magetic field caused by ac
current. Figure 5 shows the principle of a di/dt current
sensor.
+
-
EMF (electromotive force)
induced by changes in
magnetic flux density (d/dt)
Magnetic field created by current
(directly proportional to current)
Figure 5– Principle of a di/dt current sensor
T he flux density of a magnetic field induced by a current is
directly proportional to the magnitude of the current. T he
changes in the magnetic flux density passing through a
conductor loop generates an electromotive force (EMF )
between the two ends of the loop. T he EMF is a voltage signal
which is proportional to the di/dt of the current. T he voltage
output from the di/dt current sensor is determined by the
mutual inductance between the current carrying conductor
and the di/dt sensor.
T he 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. T he ADE7753 has a
built-in digital integrator to recover the current signal from
the di/dt sensor. T he digital integrator on C hannel 1 is
switched off by default when the ADE7753 is powered up.
Setting the MSB of C H 1OS register will turn on the
integrator. Figures 6 to 9 show the magnitude and phase
response of the digital integrator.
10
2
10
3
-50
-40
-30
-20
-10
0
10
FREQUENCY-Hz
G
Figure 6– Combined gain response of the digital integrator
and phase compensator
10
2
10
3
-90.5
-90
-89.5
-89
-88.5
-88
FREQUENCY-Hz
P
Figure 7– Combined phase response of the digital integra-
tor and phase compensator
40
45
50
55
60
65
70
-6
-5.5
-5
-4.5
-4
-3.5
-3
-2.5
-2
-1.5
-1
FREQUENCY-Hz
G
Figure 8– Combined gain response of the digital integrator
and phase compensator (40Hz to 70Hz)
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| ADE7753ARS | Active and Apparent Energy Metering IC with di/dt sensor interface |
| ADE7753ARSRL | Active and Apparent Energy Metering IC with di/dt sensor interface |
| ADE7754 | ADE7754 |
| ADE7754AR | ADE7754 |
| ADE7754ARRL | ADE7754 |
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| ADE7753ARSZ | 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:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:2,500 系列:* |
| ADE7753ARSZ | 制造商:Analog Devices 功能描述:ENERGY METERING IC |
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