AD9251 Analog Devices, AD9251 Datasheet - Page 18

• Manufacturer Part Number: AD9251
• Description: 14-Bit, 20 MSPS/40 MSPS/65 MSPS/80 MSPS, 1.8 V Dual Analog-to-Digital Converter
• Manufacturer: Analog Devices

Specifications of AD9251

• Resolution (bits): 14bit
• # Chan: 2
• Sample Rate: 80MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p,2 V p-p
• Adc Architecture: Pipelined
• Pkg Type: CSP

AD9251
EQUIVALENT CIRCUITS
SDIO/DCS
CLK+
CLK–
Figure 31. Equivalent SDIO/DCS Input Circuit
Figure 29. Equivalent Analog Input Circuit
Figure 30. Equivalent Clock Input Circuit
VIN±x
DRVDD
AVDD
350Ω
30kΩ
5Ω
5Ω
AVDD
30kΩ
15kΩ
15kΩ
0.9V
Rev. A | Page 18 of 36
Figure 33. Equivalent SCLK/DFS, SYNC, OEB, and PDWN Input Circuit
SCLK/DFS, SYNC,
OEB, AND PDWN
AND VCM
Figure 32. Equivalent Digital Output Circuit
RBIAS
Figure 34. Equivalent RBIAS, VCM Circuit
AVDD
DRVDD
350Ω
DRVDD
375Ω
30kΩ