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VP216

Dual 90MHz 6-Bit Analog to Digital Converter with VCO

Preliminary Information

DS4070 - 1.6 May 1996

The VP216 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 VP216 includes

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

VCO or Ext. clock interface.

The VP216 also has the

necessary bias voltages for the reference resistor chain in

the '鏗俛sh' architecture of the ADC.

FEATURES

s

90MHz Conversion Rate

s

VCO or Ext. Clock Interface

s

High Bandwidth ADC Driver Ampli鏗乪r

s

Internal ADC Reference

s

TTL Data Outputs

s

Single 5 Volt Supply

s

Dual ADC System for good channel matching

APPLICATIONS

s

Satellite Decoders

s

Multimedia

s

Communications

ORDERING INFORMATION

VP216A CG HP1S (Commercial - 44 pin PLCC)

7

8

9

10

11

12

AIN_I

AGND3 13

AV

CC

3 14

COMP_Q 15

AIN_Q 16

AGND4 17

VRM

VRB

AV

CC

2

AGND2

COMP_I

39 DI2

38 DI1

37 DI0

36 DV

CC

35 DGND

34 DQ5

33 DQ4

32 DQ3

31 DQ2

30 DQ1

29 DQ0

HP44

Fig.1 Pin connections - top view

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

9,14,18,23

1,2

36

COMP_I

AIN_I

11

12

ADC

DRIVER

AV

CC

AV

CC

DV

CC

+

6-BIT

ADC

VRB VRM VRT

6

LATCHES

DATA

OUTPUTS

VRM

7

37

38

39

40

41

42

CLOCK

BUFFER

VCO

&

XTAL

OSC.

27

25

21

20

19

22

DI0

DI1

DI2

DI3

DI4

DI5

CLKOUT

CLKIN

TANK

BIAS

AGC

CLKSEL

DQ0

DQ1

DQ2

DQ3

DQ4

DQ5

VRB

8

VREF

OP AMPS

CLOCK

DRIVER

CLK

SEL

VRT

AIN_Q

COMP_Q

VRB VRM VRT

6

16

15

10,13,17,24

3,4

+

ADC

DRIVER

6-BIT

ADC

6

LATCHES

DATA

OUTPUTS

29

30

31

32

33

34

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

AGND

AGND

DGND

35

Fig.2 System block diagram

next

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