AD9644 Analog Devices, AD9644 Datasheet - Page 19

• Manufacturer Part Number: AD9644
• Description: 14-Bit, 80 MSPS/155 MSPS, 1.8V Dual, Serial Output A/D Converter
• Manufacturer: Analog Devices

Specifications of AD9644

• Resolution (bits): 14bit
• # Chan: 2
• Sample Rate: 155MSPS
• Analog Input Type: Diff-Bip
• Ain Range: 1.75 V p-p
• Adc Architecture: Pipelined

Data Sheet
EQUIVALENT CIRCUITS
CLK+
DOUT±A/B
AVDD
SDIO
Figure 41. Equivalent Analog Input Circuit
Figure 42. Equivalent Clock Input Circuit
Figure 44. Equivalent SDIO Circuit
VIN
4mA
4mA
Figure 43. Digital CML Output
DRVDD
15kΩ
AVDD
AVDD
DRVDD
R
0.9V
V
TERM
30kΩ
CM
15kΩ
350Ω
4mA
4mA
DOUT±A/B
AVDD
CLK–
Rev. C | Page 19 of 44
Figure 47. Equivalent SYNC and DSYNC Input Circuit
Figure 45. Equivalent SCLK or PDWN Input Circuit
DSYNC±A/B
PDWN
SCLK
CSB
OR SYNC
OR
Figure 46. Equivalent CSB Input Circuit
AVDD
AVDD
30kΩ
30kΩ
0.9V
350Ω
16kΩ
350Ω
AVDD
0.9V
AD9644