CA3318CD データシートの表示（PDF） - Intersil

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CA3318CD

CMOS Video Speed, 8-Bit, Flash A/D Converter

Intersil 

CA3318

+4V TO +6.5V

REFERENCE

4.7µF/10V TANTALUM +

A

CLOCK

SOURCE

OPTIONAL CAP

(SEE TEXT)

0.01µF

INPUT SIGNAL

AMPLIFIER/BUFFER

(SEE TEXT)

A

D

+5V (ANALOG SUPPLY)

VAA+

3/4 REF

BIT 1

BIT 2

VREF+

BIT 3

VIN

1/2 REF

PHASE

BIT 4

BIT 5

BIT 6

CLK

BIT 7

VAA-

VIN

VREF-

CE1

BIT 8

OVF

1/4 REF

VSS

CE2

VDD

CA3318

DIGITAL

OUTPUT

D

A

+

4.7µF

TANTALUM/10V

+5V (DIGITAL SUPPLY)

FIGURE 14. TYPICAL CIRCUIT CONFIGURATION FOR THE CA3318 WITH NO LINEARITY ADJUST

SIGNAL

SOURCE

SIGNAL

GROUND

AMP

REF

VIN

VIN

OUTPUT

DRIVERS

VREF+

TO

DIGITAL

SYSTEM

REFERENCE

TAPS

VAA+

VDD

VREF -

VAA-

VSS

- ANALOG +

SUPPLIES

VAA

SUPPLY

VDD

SUPPLY

FIGURE 15. TYPICAL SYSTEM GROUNDING/BYPASSING

SYSTEM

DIGITAL

GROUND

75Ω

1VP-P

VIDEO

INPUT

75Ω

+8V

10Ω

14

7

11

8

6

5pF 9 CA3450

3

13

12

5

4

0.001µF

0.001µF

10Ω

390

16

A/D FLASH

INPUT

21

10Ω

750

110

NOTE: Ground-planing and tight layout

-4V

0.1

are extremely important.

0V TO -10V

OFFSET SOURCE

RS < 10Ω

FIGURE 16. TYPICAL HIGH BANDWIDTH AMPLIFIER FOR DRIVING THE CA3318

11

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