AD7607 Analog Devices, AD7607 Datasheet - Page 27

• Manufacturer Part Number: AD7607
• Description: 8-Channel DAS with 14-Bit, Bipolar, Simultaneous Sampling ADC
• Manufacturer: Analog Devices

Specifications of AD7607

• Resolution (bits): 14bit
• # Chan: 8
• Sample Rate: 200kSPS
• Interface: Par,Ser,SPI
• Analog Input Type: SE-Bip
• Ain Range: Bip 10V,Bip 5.0V
• Adc Architecture: SAR
• Pkg Type: QFP

Data Sheet
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.
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
0
0
0
100
100
100
Figure 44. Digital Filter Response for Oversampling by 2
Figure 45. Digital Filter Response for Oversampling by 4
Figure 46. Digital Filter Response for Oversampling by 8
AV
T
±10V RANGE
OS BY 4
AV
T
±10V RANGE
OS BY 8
AV
T
±10V RANGE
OS BY 2
A
A
A
CC
= 25°C
CC
CC
= 25°C
= 25°C
= V
= V
= V
DRIVE
DRIVE
DRIVE
1k
1k
1k
= 5V
= 5V
= 5V
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
10k
10k
10k
100k
100k
100k
1M
1M
1M
10M
10M
10M
Rev. B | Page 27 of 32
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
–10
–20
–30
–40
–50
–60
–70
–80
–90
0
0
0
100
100
100
Figure 47. Digital Filter Response for Oversampling by 16
Figure 48. Digital Filter Response for Oversampling by 32
Figure 49. Digital Filter Response for Oversampling by 64
AV
T
±10V RANGE
OS BY 32
AV
T
±10V RANGE
OS BY 64
AV
T
±10V RANGE
OS BY 16
A
A
A
CC
CC
CC
= 25°C
= 25°C
= 25°C
= V
= V
= V
DRIVE
DRIVE
DRIVE
1k
1k
1k
= 5V
= 5V
= 5V
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
10k
10k
10k
100k
100k
100k
1M
1M
1M
AD7607
10M
10M
10M