National Semiconductor ADC10080 Manual page 4

Pin No. Symbol
16–20, 23–
D0–D9
27
ANALOG POWER
2, 9, 10 V
DDA
V
3, 11, 14
SSA
DIGITAL POWER
V
22
DDIO
V
21
SSIO
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Equivalent Circuit
Digital output data. D0 is the LSB and D9 is the MSB of the binary
output word.
Positive analog supply pins. These pins should be connected to a
quiet 3.0V source and bypassed to analog ground with a 0.1 µF
monolithic capacitor located within 1 cm of these pins. A 4.7 µF
capacitor should also be used in parallel.
Ground return for the analog supply.
Positive digital supply pins for the ADC10080's output drivers. This
pin should be bypassed to digital ground with a 0.1 µF monolithic
capacitor located within 1 cm of this pin. A 4.7 µF capacitor should
also be used in parallel. The voltage on this pin should never
exceed the voltage on V
The ground return for the digital supply for the output drivers. This
pin should be connected to the ground plane, but not near the
analog circuitry.
4
Description
by more than 300 mV.
DDA