AD7606BSTZ 데이터 시트보기 (PDF) - Analog Devices
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AD7606BSTZ Datasheet PDF : 36 Pages
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AD7606/AD7606-6/AD7606-4
When the oversampling mode is selected for the AD7606/
AD7606-6/AD7606-4, it has the effect of adding a digital filter
function after the ADC. The different oversampling rates and
the CONVST sampling frequency produce different digital filter
frequency profiles.
Figure 56 to Figure 60 show the digital filter frequency profiles for
the different oversampling rates. The combination of the analog
antialiasing filter and the oversampling digital filter can be used
to eliminate and reduce the complexity of the design of any filter
before the AD7606/AD7606-6/AD7606-4. The digital filtering
combines steep roll-off and linear phase response.
0
AVCC = 5V
–10
VDRIVE = 5V
TA = 25°C
10V RANGE
–20
OS BY 2
–30
–40
–50
–60
–70
–80
–90
100
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
100
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 56. Digital Filter Response for OS 2
AVCC = 5V
VDRIVE = 5V
TA = 25°C
10V RANGE
OS BY 4
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 57. Digital Filter Response for OS 4
AVCC = 5V
VDRIVE = 5V
TA = 25°C
10V RANGE
OS BY 8
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 58. Digital Filter Response for OS 8
Rev. 0 | Page 31 of 36
0
AVCC = 5V
–10
VDRIVE = 5V
TA = 25°C
–20
10V RANGE
OS BY 16
–30
–40
–50
–60
–70
–80
–90
–100
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 59. Digital Filter Response for OS 16
0
AVCC = 5V
–10
VDRIVE = 5V
TA = 25°C
–20
10V RANGE
OS BY 32
–30
–40
–50
–60
–70
–80
–90
–100
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 60. Digital Filter Response for OS 32
0
AVCC = 5V
–10
VDRIVE = 5V
TA = 25°C
–20
10V RANGE
OS BY 64
–30
–40
–50
–60
–70
–80
–90
–100
100
1k
10k
100k
1M
10M
FREQUENCY (Hz)
Figure 61. Digital Filter Response for OS 64
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