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6BIT 250MSPS ADC

GENERAL DESCRIPTION

The BW1238X is a CMOS 6-Bit A/D converter for a

digital video disk (DVD) partial-response maximum

likelihood (PRML) system. It is a flash type A/D

converter which consists of input buffer, comparator

array, digital backend encoder, and output buffer. The

maximum conversion rate of BW1238X is over

250MSPS and supply voltage is 3.3V single.

BW1238X

FEATURES

-

-

-

-

-

-

-

Resolution : 6Bit

Differential Linearity Error : 鹵1.0 LSB

Integral Linearity Error : 鹵1.0 LSB

Maximum Conversion Rate : 250MSPS

Digital Output : CMOS Level

Power Consumption : 260mW

Power Supply : 3.3V Single

TYPICAL APPLICATIONS

- Multi-media applications

- Digital video disk (DVD) system

- Digital broadcast satellite (DBS) receiver

- Quadrature phase shift keying (QPSK) demodulator

- Video applications

FUNCTIONAL BLOCK DIAGRAM

REFBOT

REFTOP

VDDA

VDDD

VSSD

VSSA

VBBA

CML

CML

Level

Generator

4-bit

ROM

Block

4-bit

ROM

Block

4-bit

ROM

Block

4-bit

ROM

Block

DSL

Block

AINT

INCOM

Input

Buffer

Comparator

Array

FNAND

Array

Flip/

Flop

Array

Flip/

Flop

Array

Output

Buffer

DO[5:0]

ITEST

SPEEDUP

Bias

Current

Generator

CLKIN

Clock Generator

Ver 2.0 (Mar. 2002)

No responsibility is assumed by SEC for its use nor for any

infringements of patents or other rights of third parties that may

result from its use. The content of this datasheet is subject to

change without any notice.

SAMSUNG ELECTRONICS Co. LTD

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• BW1244D
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• BW1254X
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