BW1251X Datasheet

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12-BIT 500KSPS ADC

GENERAL DESCRIPTION

The BW1251X is a CMOS 3.3V 12-bit analog-to-

digital converter (ADC). It converts the analog input

signal into 12-bit binary digital codes at a maximum

conversion rate of 500KSPS with 2.5MHz clock.

The device is a recycling type monolithic ADC with

an on-chip sample-and-hold function.

power down mode.

The ADC has

BW1251X

FEATURES

鈥?Resolution : 12-bit

鈥?Maximum Conversion Rate : 500KSPS

鈥?Main Clock : 2.5MHz

鈥?Power Supply : 3.3V 卤0.3V

鈥?Total Current : 20uA (Standby Mode)

2.2mA (Normal Operation)

鈥?Input Range : 0.0V ~ 3.3V (3.3V

P-P

)

鈥?Differential Linearity Error : 卤0.7 LSB

鈥?Integral Linearity Error : 卤0.8 LSB

鈥?Signal to Noise & Distortion Ratio : 70dB

鈥?Digital Output : CMOS Level

鈥?Operating Temperature Range : 0 掳C ~ 70 掳C

TYPICAL APPLICATIONS

MICOM Interface

Portable Equipment

Low-Voltage Low-Power Application

FUNCTIONAL BLOCK DIAGRAM

AINT

MDAC1

MAIN

BIAS

MDAC2

STBY

VREF

AGND

REF

GEN

FLASH1

FLASH2

CML

GEN

CKIN

STC

CLOCK

GEN

DIGITAL

LOGIC

DO[11:0]

EOC

Ver 1.2 (Apr. 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 data

sheet is subject to change without any notice.

SAMSUNG ELECTRONICS Co. LTD

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