参数资料
型号: ADE7169ASTZF16
厂商: Analog Devices Inc
文件页数: 56/152页
文件大小: 0K
描述: IC ENERGY METER 1PHASE 64LQFP
标准包装: 1
输入阻抗: *
测量误差: *
电压 - 高输入/输出: *
电压 - 低输入/输出: *
电流 - 电源: *
电源电压: *
测量仪表类型: *
工作温度: *
安装类型: 表面贴装
封装/外壳: 64-LQFP
供应商设备封装: 64-LQFP(10x10)
包装: 托盘
产品目录页面: 797 (CN2011-ZH PDF)
配用: EVAL-ADE7169EBZ-2-ND - BOARD EVALUATION FOR ADE7169F16
ADE7116/ADE7156/ADE7166/ADE7169/ADE7566/ADE7569
The ADE7169/ADE7569 have a built-in digital integrator to
recover the current signal from the di/dt sensor. The digital
integrator on the current channel is switched off by default when
the ADE7169/ADE7569 are powered up. Setting the INTE bit
(Bit 5) in the MODE1 register (Address 0x0B) turns on the
integrator. Figure 51 to Figure 54 show the gain and phase
response of the digital integrator.
10
0
–1.0
–1.5
–2.0
–2.5
–3.0
–3.5
–4.0
–4.5
–5.0
–5.5
–10
–6.0
40
45
50
55 60
65
70
–20
–30
–40
–50
FREQUENCY (Hz)
Figure 53. Combined Gain Response of the Digital Integrator and
Phase Compensator (40 Hz to 70 Hz)
–89.70
–89.75
–89.80
100
FREQUENCY (Hz)
1000
–89.85
Figure 51. Combined Gain Response of the Digital Integrator and
Phase Compensator
–88.0
–88.5
–89.90
–89.95
–90.00
–90.05
–89.0
40
45
50
55 60
65
70
FREQUENCY (Hz)
–89.5
–90.0
Figure 54. Combined Phase Response of the Digital Integrator and
Phase Compensator (40 Hz to 70 Hz)
Note that the integrator has a ?20 dB/dec attenuation and an
approximately ?90° phase shift. When combined with a di/dt
sensor, the resulting magnitude and phase response should be a
–90.5
10 2
FREQUENCY (Hz)
10 3
flat gain over the frequency band of interest. The di/dt sensor
has a 20 dB/dec gain associated with it. It also generates
Figure 52. Combined Phase Response of the Digital Integrator and
Phase Compensator
significant high frequency noise. Therefore, a more effective
antialiasing filter is needed to avoid noise due to aliasing (see
the Antialiasing Filter section).
When the digital integrator is switched off, the ADE7169/ADE7569
can be used directly with a conventional current sensor, such as a
current transformer (CT), or with a low resistance current
shunt.
Rev. B | Page 56 of 1 5 2
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