参数资料
| 型号： | EVAL-ADE7759EBZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 13/36页 |
| 文件大小： | 0K |
| 描述： | BOARD EVALUATION FOR ADE7759 |
| 标准包装： | 1 |
| 主要目的： | 电源管理，电度表/功率表 |
| 已用 IC / 零件： | ADE7759 |
| 已供物品： | 板 |
| 相关产品： | ADE7759ARSZRL-ND - IC ENERGY METERING 1PHASE 20SSOP ADE7759ARSZ-ND - IC ENERGY METERING 1PHASE 20SSOP |
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ADE7759
30
20
10
–89.980
–89.985
–89.990
0
–89.995
–10
–90.000
–20
–90.005
–30
–40
–50
–90.010
–90.015
–60
10 1
10 2
10 3
10 4
–90.020
40
45
50
55 60
65
70
FREQUENCY – Hz
Figure 10. Gain Response of the Digital Integrator
–88.0
–88.5
–89.0
–89.5
–90.0
–90.5
–91.0
–91.5
FREQUENCY – Hz
Figure 13. Phase Response of the Digital Integrator
(40 Hz to 70 Hz)
Note that the integrator has a –20 dB/dec attenuation and
approximately –90 ° phase shift. When combined with a di/dt
sensor, the resulting magnitude and phase response should be a
flat gain over the frequency band of interest. However, the di/dt
sensor has a 20 dB/dec gain associated with it, and generates
significant high frequency noise. A more effective antialiasing
filter is needed to avoid noise due to aliasing—see Antialias
Filter section.
When the digital integrator is switched off, the ADE7759 can be
used directly with a conventional current sensor such as current
transformer (CT) or a low resistance current shunt.
–92.0
10 1
10 2
10 3
FREQUENCY – Hz
10 4
ZERO CROSSING DETECTION
The ADE7759 has a zero crossing detection circuit on Channel 2.
This zero crossing is used to produce an external zero cross
Figure 11. Phase Response of the Digital Integrator
0
–1
signal (ZX), and it is also used in the calibration mode—see
Energy Calibration section. The zero crossing signal is also used
to initiate a temperature measurement on the ADE7759—see
Temperature Measurement section. Figure 14 shows how the
zero cross signal is generated from the output of LPF1.
–2
1,
8,
2,
16
4,
REFERENCE
–3
V2
V2P
{GAIN [7:5]}
PGA2
ADC 2
1
–63% TO +63% FS
TO
MULTIPLIER
V2N
–4
ZERO
CROSS
ZX
–5
LPF1
f –3dB = 156Hz
–6
40
45
50
55 60
FREQUENCY – Hz
65
70
1.0
0.93
21.04 @ 60Hz
ZX
Figure 12. Gain Response of the Digital Integrator
(40 Hz to 70 Hz)
V2
LPF1
Figure 14. Zero Cross Detection on Channel 2
REV. A
–13 –
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| EVAL-ADE7816EBZ | 功能描述:BOARD EVALUATION FOR ADE7816 RoHS:是 类别:编程器，开发系统 >> 评估演示板和套件 系列:- 标准包装:1 系列:PSoC® 主要目的:电源管理，热管理 嵌入式:- 已用 IC / 零件:- 主要属性:- 次要属性:- 已供物品:板，CD，电源 |
| EVAL-ADE7854EBZ | 制造商:Analog Devices 功能描述:EVALUATION BOARDS - Boxed Product (Development Kits) |
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