Rainbow-electronics ADC10040 Manuel d'utilisateur télécharger pdf (Page 4)

Pin Descriptions and Equivalent Circuits (Continued)

Pin No. Symbol Equivalent Circuit Description

16–20,

23–27

D0–D9

Digital output data. D0 is the LSB and D9 is the MSB of the

binary output word.

ANALOG POWER

2, 9, 10 V

DDA

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.

3, 11, 14 V

SSA

Ground return for the analog supply.

DIGITAL POWER

22 V

DDIO

Positive digital supply pins for the ADC10040’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

DDA

by more than

300 mV.

21 V

SSIO

The ground return for the digital supply for the output drivers.

This pin should be connected to the digital ground, but not

near the analog ground.

ADC10040

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Rainbow-electronics ADC10040 Manuel d'utilisateur Page 4