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AD7607 数据表(PDF) 28 Page - Analog Devices

部件名 AD7607
功能描述  8-Channel DAS with 14-Bit, Bipolar Input Simultaneous Sampling ADC
PDF  33 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD7607 数据表(HTML) 28 Page - Analog Devices

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Data Sheet
AD7607
Rev. C | Page 27 of 32
Figure 44 to Figure 49 show the digital filter frequency profiles for
the different oversampling ratios. The combination of the analog
antialiasing filter and the oversampling digital filter helps to reduce
the complexity of the design of the filter before the AD7607. The
digital filtering combines steep roll-off and linear phase response.
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
AVCC = VDRIVE = 5V
TA = 25°C
±10V RANGE
OS BY 2
Figure 44. Digital Filter Response for Oversampling by 2
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
AVCC = VDRIVE = 5V
TA = 25°C
±10V RANGE
OS BY 4
Figure 45. Digital Filter Response for Oversampling by 4
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
AVCC = VDRIVE = 5V
TA = 25°C
±10V RANGE
OS BY 8
Figure 46. Digital Filter Response for Oversampling by 8
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
AVCC = VDRIVE = 5V
TA = 25°C
±10V RANGE
OS BY 16
Figure 47. Digital Filter Response for Oversampling by 16
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
AVCC = VDRIVE = 5V
TA = 25°C
±10V RANGE
OS BY 32
Figure 48. Digital Filter Response for Oversampling by 32
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
AVCC = VDRIVE = 5V
TA = 25°C
±10V RANGE
OS BY 64
Figure 49. Digital Filter Response for Oversampling by 64



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