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| 型号： | ADE7758ARWZRL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 20/72页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY METERING 3PHASE 24SOIC |
| 标准包装： | 1,000 |
| 输入阻抗： | 380 千欧 |
| 测量误差： | 0.1% |
| 电压 - 高输入/输出： | 2.4V |
| 电压 - 低输入/输出： | 0.8V |
| 电流 - 电源： | 8mA |
| 电源电压： | 4.75 V ~ 5.25 V |
| 测量仪表类型： | 3 相 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 24-SOIC W |
| 包装： | 带卷 (TR) |
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ADE7758
DI/DT CURRENT SENSOR AND DIGITAL
INTEGRATOR
The di/dt sensor detects changes in the magnetic field caused by
the ac current. Figure 42 shows the principle of a di/dt current
sensor.
MAGNETIC FIELD CREATED BY CURRENT
(DIRECTLY PROPORTIONAL TO CURRENT)
+ EMF (ELECTROMOTIVE FORCE)
80
81
82
83
84
85
86
87
88
89
90
91
Data Sheet
– INDUCED BY CHANGES IN
10
100
1k
10k
MAGNETIC FLUX DENSITY (di/dt)
Figure 42. 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 that is propor-
tional 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 ADE7758 has a built-
in digital integrator to recover the current signal from the di/dt
sensor. The digital integrator on Channel 1 is disabled by default
5
4
3
2
1
0
FREQUENCY (Hz)
Figure 44. Combined Phase Response of the
Digital Integrator and Phase Compensator
when the ADE7758 is powered up. Setting the MSB of the
–1
40
45
50
55
60
65
70
GAIN[7:0] register turns on the integrator. Figure 43 to Figure 46
show the magnitude and phase response of the digital
integrator.
20
FREQUENCY (Hz)
Figure 45. Combined Gain Response of the
Digital Integrator and Phase Compensator (40 Hz to 70 Hz)
89.80
10
89.85
0
89.90
–10
–20
–30
89.95
90.00
–40
90.05
–50
10
100
FREQUENCY (Hz)
1k
10k
90.10
40
45
50
55
FREQUENCY (Hz)
60
65
70
Figure 43. Combined Gain Response of the
Digital Integrator and Phase Compensator
Rev. E | Page 20 of 72
Figure 46. Combined Phase Response of the
Digital Integrator and Phase Compensator (40 Hz to 70 Hz)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADE7759 | 制造商:AD 制造商全称:Analog Devices 功能描述:Active Energy Metering IC with di/dt Sensor Interface |
| ADE7759ARS | 功能描述:IC ENERGY METERING 1PHASE 20SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 能量测量 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:* |
| ADE7759ARSRL | 功能描述:IC ENERGY METERING 1PHASE 20SSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 能量测量 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:* |
| ADE7759ARSZ | 功能描述:IC ENERGY METERING 1PHASE 20SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 能量测量 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:* |
| ADE7759ARSZRL | 功能描述:IC ENERGY METERING 1PHASE 20SSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 能量测量 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:* |
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