AD9683
EQUIVALENT CIRCUITS
AVDD
VIN
Figure 33. Equivalent Analog Input Circuit
AVDD
AVDD
CLK+
0.9V
15kΩ
15kΩ
AVDD
CLK–
Data Sheet
DVDD
PDWN,
SCLK,
CS
400Ω
30kΩ
Figure 38. Equivalent PDWN, SCLK, or CS Input Circuit
DVDD
DVDD
SYNCINB+
0.9V
17kΩ
17kΩ
DVDD
SYNCINB–
Figure 34. Equivalent Clock lnput Circuit
AVDD
0.5pF
RFCLK
10kΩ
BIAS
CONTROL
INTERNAL
CLOCK DRIVER
Figure 39. Equivalent SYNCINB± Input Circuit
AVDD
AVDD
SYSREF+
0.9V
17kΩ
17kΩ
AVDD
SYSREF–
Figure 35. Equivalent RF Clock lnput Circuit
DRVDD
3mA
SERDOUT0±
3mA
DRVDD
RTERM
VCM
DRVDD
3mA
SERDOUT0±
3mA
Figure 36. Digital CML Output Circuit
DVDD
SDIO
400Ω
31kΩ
Figure 37. Equivalent SDIO Circuit
Rev. 0 | Page 18 of 44
Figure 40. Equivalent SYSREF± Input Circuit
DRVDD
DRVDD
400Ω
RST
28kΩ
Figure 41. Equivalent RST Input Circuit
AVDD
400Ω
VCM
Figure 42. Equivalent VCM Circuit