EQUIVALENT CIRCUITS
VDD
AIN
AIN
DEMUX
300⍀
AD9054A
VDD
17.5k⍀
300⍀
7.5k⍀
Figure 3. Equivalent Analog Input Circuit
VDD
VREF IN
Figure 6. Equivalent DEMUX Input Circuit
VDD
DIGITAL
OUTPUTS
Figure 4. Equivalent Reference Input Circuit
ENCODE
OR DS
300⍀
17.5k⍀
300⍀
7.5k⍀
VDD
ENCODE
OR DS
Figure 7. Equivalent Digital Output Circuit
VDD
VREF
OUT
Figure 5. Equivalent ENCODE and Data Select Input Circuit
Figure 8. Equivalent Reference Output Circuit
REV. B
–7–