Datasheet

AD9484
Rev. A | Page 13 of 24
EQUIVALENT CIRCUITS
0.9V
15kΩ 15kΩ
C
LK+
CLK–
AVDD
AVDD AVDD
09615-006
Figure 20. Clock Inputs
CML
V
IN+
AVDD
V
BOOST
AVDD
V
IN+
AVDD
500Ω
500Ω
A
IN
+
A
IN
–
SPI
CONTROLLED
DC
09615-007
Figure 21. Analog Input DC Equivalent Circuit (V
CML
= ~1.7 V)
SCLK/DFS
350Ω
30kΩ
DRVDD
DRVDD
09615-008
Figure 22. Equivalent SCLK/DFS, PDWN Input Circuit
V
IN+
V
IN–
1.3pF 1kΩ
09615-025
Figure 23. Analog Input AC EquivalentCircuit
CSB
350Ω
30kΩ
DRVDD
DRVDD
DRVDD
09615-009
Figure 24. Equivalent CSB Input Circuit
D
R
V
DD
Dx+
V–
V+
Dx–
V+
V–
0
9615-010
Figure 25. LVDS Outputs (Dx+, Dx−, OR+, OR−, DCO+, DCO−)
20kΩ
(11)
(01)
(00)
(10)
SPI CTRL V
REF
SELECT
00 = INTERNAL V
REF
01 = IMPORT V
REF
10 = EXPORT V
REF
11 = NOT USED
NOT USED
VREF
A
V
DD
09615-011
Figure 26. Equivalent VREF Input/Output Circuit
DRVDD
SDIO
30kΩ
350Ω
DRVDD
CTRL
0
9615-012
Figure 27. Equivalent SDIO Input Circuit