- 您现在的位置：买卖IC网 > PDF目录20620 > ADE7752AARZ-RL (Analog Devices Inc)IC ENERGY METERING 3PHASE 24SOIC PDF资料下载
参数资料
| 型号： | ADE7752AARZ-RL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 20/24页 |
| 文件大小： | 0K |
| 描述： | IC ENERGY METERING 3PHASE 24SOIC |
| 标准包装： | 1,000 |
| 输入阻抗： | 450 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： | 6mA |
| 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) |
| 配用： | EVAL-ADE7752AEBZ-ND - BOARD EVALUATION FOR ADE7752A |
ADE7752/ADE7752A
TRANSFER FUNCTION
6 . 181 × 0 . 5 × 0 . 5 × 0 . 60
FREQUENCY OUTPUTS F1 AND F2
The ADE7752 calculates the product of six voltage signals (on
current channel and voltage channel) and then low-pass filters
this product to extract real power information. This real power
information is then converted to a frequency. The frequency
information is output on F1 and F2 in the form of active high
pulses. The pulse rate at these outputs is relatively low, such as
29.32 Hz maximum for ac signals with SCF = 1; S0 = S1 = 1 (see
Table 6). This means that the frequency at these outputs is
generated from real power information accumulated over a
relatively long period of time. The result is an output frequency
that is proportional to the average real power. The averaging of
the real power signal is implicit to the digital-to-frequency
conversion. The output frequency or pulse rate is related to the
input voltage signals by the following equation:
F 1–7 = 0.60 Hz, SCF = S 0 = S 1 = 1
V AN = V BN = V CN = IA = IB = IC = 500 mV dc =
0.5 V( rms of dc = dc )
V REF = 2.4 V ( nominal reference value )
Note that if the on-chip reference is used, actual output fre-
quencies may vary from device to device due to reference
tolerance of ±8%.
Freq = 3 × = 0 . 483 Hz
2 . 4 2
Example 2
In this example, with ac voltages of ±500 mV peak applied to
the voltage channels and current channels, the expected output
frequency is calculated as follows:
V REF
Freq =
6 . 181 × ( V AN × I A + V BN × I B + V CN × I C ) × F
2
1 ? 7
F 1 ? 7 = 0 . 60 Hz , SCF = S 0 = S 1 = 1
V AN = V BN = V CN = IA = IB = IC
= 500 mV peak AC =
V REF = 2 . 4 V ( nominal reference value )
where:
Freq = the output frequency on F1 and F2 (Hz).
V AN, V BN, and V CN = the differential rms voltage signal on voltage
channels (V).
I A , I B , and I C = the differential rms voltage signal on current
channels (V).
0 . 5
Vrms
2
Note that if the on-chip reference is used, actual output fre-
quencies may vary from device to device due to reference
tolerance of ±8%.
V REF = the reference voltage (2.4 V ± 8%) (V).
F 1–7 = one of seven possible frequencies selected by using the
logic inputs SCF, S0, and S1 (see Table 5).
Freq = 3 ×
6 . 181 × 0 . 5 × 0 . 5 × 0 . 6
2 × 2 × 2 . 4 2
= 0 . 24 Hz
Table 5. F 1–7 Frequency Selection 1
As can be seen from these two example calculations, the
maximum output frequency for ac inputs is always half of that
SCF
0
1
0
1
0
1
0
1
S1
0
0
0
0
1
1
1
1
S0
0
0
1
1
0
0
1
1
F 1–7 (Hz)
1.27
1.19
5.09
4.77
19.07
19.07
76.29
0.60
for dc input signals. The maximum frequency also depends on
the number of phases connected to the ADE7752. In a 3-phase
3-wire delta service, the maximum output frequency is different
from the maximum output frequency in a 3-phase
4-wire Wye service. The reason is that there are only two phases
connected to the analog inputs, but also that in a delta service,
the current channel input and voltage channel input of the same
phase are not in phase in normal operation.
Example 3
1
F 1–7 is a fraction of the master clock and therefore varies if the specified
CLKIN frequency is altered.
In this example, the ADE7752 is connected to a 3-phase 3-wire
delta service as shown in Figure 21. The total real energy
Total Real Power = ( V A ? V C ) × I A + ( V B ? V C ) × I B
where V A , V B , and V C represent the voltage on Phase A, B, and
C, respectively. I A and I B represent the current on Phase A and
Example 1
Thus, if full-scale differential dc voltages of +500 mV are
applied to VA, VB, VC, IA, IB, and IC, respectively (500 mV is
the maximum differential voltage that can be connected to
current and voltage channels), the expected output frequency is
calculated as follows:
calculation processed in the ADE7752 can be expressed as
B B
B
B
B, respectively.
Rev. C | Page 20 of 24
相关PDF资料 |
PDF描述 |
|---|---|
| ADE7566ASTZF16 | IC ENERGY METER 1PHASE 64-LQFP |
| GMM06DTBI | CONN EDGECARD 12POS R/A .156 SLD |
| RCB09DHNN | CONN EDGECARD 18POS DIP .050 SLD |
| ADE7762ARWZ-RL | IC ENERGY METERING 3PHASE 28SOIC |
| GMM06DTAI | CONN EDGECARD 12POS R/A .156 SLD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADE7752AR | 制造商:Rochester Electronics LLC 功能描述:THREE PHASE ACTIVE ENERGY METERING IC - Bulk 制造商:Analog Devices 功能描述:IC ENERGY METER |
| ADE7752ARRL | 制造商:Analog Devices 功能描述:Energy Measurement 24-Pin SOIC W T/R 制造商:Analog Devices 功能描述:IC ENERGY METER |
| ADE7752ARZ | 制造商:Analog Devices 功能描述:Energy Measurement 24-Pin SOIC W |
| ADE7752ARZ-RL | 制造商:Analog Devices 功能描述:Energy Measurement 24-Pin SOIC W T/R |
| ADE7752B | 制造商:AD 制造商全称:Analog Devices 功能描述:Polyphase Energy Metering IC with Pulsed Output |
发布紧急采购，3分钟左右您将得到回复。