ADC11DL066 datasheet(4/23 Pages) NSC

No de pièce	ADC11DL066

Description	Dual 11-Bit, 66 MSPS, 450 MHz Input Bandwidth A/D Converter w/Internal Reference

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Pin Descriptions and Equivalent Circuits (Continued)

Pin No.

Symbol

Equivalent Circuit

Description

25–29

34–39

DA0–DA10

Digital data output pins that make up the 11-bit conversion

results of their respective converters. DA0 and DB0 are the

LSBs, while DA10 and DB10 are the MSBs of the output

words. Output levels are TTL/CMOS compatible.

43–47

52–57

DB0–DB10

ANALOG POWER

9, 18, 19,

62, 63

V

A

Positive analog supply pins. These pins should be connected

to a quiet +3.3V source and bypassed to AGND with 0.1 µF

capacitors located within 1 cm of these power pins, and with

a 10 µF capacitor.

3, 8, 10, 17,

20, 61, 64

AGND

The ground return for the analog supply.

DIGITAL POWER

33, 48

V

D

Positive digital supply pin. This pin should be connected to

the same quiet +3.3V source as is V

A and be bypassed to

DGND with a 0.1 µF capacitor located within 1 cm of the

power pin and with a 10 µF capacitor.

32, 49

DGND

The ground return for the digital supply.

24, 42

DGND

These two pins are grounded internally and may be

grounded or left unconnected.

30, 51

V

DR

Positive digital supply pin for the ADC11DL066’s output

drivers. This pin should be connected to a voltage source of

+2.4V to V

D and be bypassed to DR GND with a 0.1 µF

capacitor. If the supply for this pin is different from the

supply used for V

A and VD, it should also be bypassed with

a 10 µF tantalum capacitor. V

DR should never exceed the

voltage on V

D. All bypass capacitors should be located

within 1 cm of the supply pin.

23, 31, 40,

50, 58

DR GND

The ground return for the digital supply for the

ADC11DL066’s output drivers. These pins should be

connected to the system digital ground, but not be

connected in close proximity to the ADC11DL066’s DGND or

AGND pins. See Section 5 (Layout and Grounding) for more

details.

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Fabricant	No de pièce	Fiches technique	Description
National Semiconductor ...	ADC11DL066	491Kb / 24P	Dual 11-Bit, 66 MSPS, 450 MHz Input Bandwidth A/D Converter w/Internal Reference
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