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VP211

Dual 90MHz 6-Bit Analog to Digital Converter

Preliminary Information

DS4476 - 1.1 May 1996

The VP211 is a dual 90MHz 6-bit Analog to Digital

Converter designed for use in consumer satellite receivers

and

decoders,

video

systems,

multimedia

and

communications applications.

Operating from a single +5V supply, the VP211 includes

an on-chip high bandwidth ADC driver ampli鏗乪r, a 6-bit ADC

and digital I/O that can be interfaced to either +5V or +3V.

The VP211 also has the necessary bias voltages for the

reference resistor chain in the '鏗俛sh' architecture of the ADC.

CLKIN

V

CCD

DGND

VRT

COMPA

VINA

AGND

V

CCA

VRM

COMPB

VINB

VRB

N.C.

N.C.

1

2

3

4

5

6

7

28

27

26

25

24

23

22

21

20

19

18

17

16

15

DA5

DA4

DA3

DA2

DA1

DA0

OGND

V

CCO

DB5

DB4

DB3

DB2

DB1

DB0

FEATURES

s

90MHz Conversion Rate

s

TTL Clock/Data Interface

s

2 Volt Analog Input Range

s

Internal ADC Reference

s

Digital I/O鈥檚 compatible with +5V or +3V logic

s

Single 5 Volt Supply

s

Dual ADC System for good channel matching

APPLICATIONS

s

Satellite Decoders

s

Multimedia

s

Communications

ORDERING INFORMATION

VP211A CG MP1S (Commercial - 28 pin plastic SO)

VP211

8

9

10

11

12

13

14

MP28

Fig.1 Pin connections - top view (wide body)

-------------------------------------------------

2

8

21

COMPA

VINA

VRM

5

6

9

VRB VRM VRT

V

CCD

V

CCA

V

CCO

ADC

DRIVER

+

6-BIT

ADC

6

LATCHES

DATA

OUTPUTS

23

24

25

26

27

28

DA0

DA1

DA2

DA3

DA4

DA5

VRB

12

VREF

OP AMPS

CLOCK

DRIVER

1

CLKIN

VRT

VINB

COMPB

VRB VRM VRT

4

11

10

3

7

+

ADC

DRIVER

6-BIT

ADC

6

LATCHES

DATA

OUTPUTS

15

16

17

18

19

20

DB0

DB1

DB2

DB3

DB4

DB5

-------------------------------------------------

DGND

AGND

OGND

22

Fig.2 System block diagram

next

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