Datasheet > CLC5957_02

CLC5957_02

更新时间： 2024-11-09 04:00:11

品牌	Logo	应用领域
美国国家半导体 - NSC		转换器
页数	文件大小	规格书
16页	1671K
描述
12-Bit, 70MSPS Broadband Monolithic A/D Converter

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CLC5957_02 数据手册

April 2002

CLC5957

12-Bit, 70 MSPS Broadband Monolithic A/D Converter

General Description

Features

n 70MSPS

The CLC5957 is a monolithic 12-bit, 70MSPS analog-to-

digital converter. The device has been optimized for use in

IF-sampled digital receivers and other applications where

high resolution, high sampling rate, wide dynamic range, low

power dissipation, and compact size are required. The

CLC5957 features differential analog inputs, low jitter differ-

ential universal clock inputs, a low distortion track-and-hold

with 0-300MHz input bandwidth, a bandgap voltage refer-

ence, data valid clock output, TTL compatible CMOS (3.3V

or 2.5V) programmable output logic, and a proprietary 12-bit

multi-stage quantizer. The CLC5957 is fabricated on the

ABIC-V 0.8 micron BiCMOS process.

n Wide dynamic range:

— SFDR: 74dBc

— SFDR with dither: 85dBFS

— SNR: 67dB

n IF sampling capability

n Input bandwidth = 0-300MHz

n Low power dissipation: 640mW

n Very small package: 48-pin TSSOP

n Single +5V supply

n Data valid clock output

n Programmable output levels: 3.3V or 2.5V

The CLC5957 features a 74dBc spurious free dynamic

range (SFDR) and a 67dB signal to noise ratio (SNR). The

wideband track-and-hold allows sampling of IF signals to

greater than 250MHz. The part produces two-tone, dithered,

SFDR of 83dBFS at 75MHz input frequency. The differential

analog input provides excellent common mode rejection,

while the differential universal clock inputs minimize jitter.

The 48-pin TSSOP package provides an extremely small

footprint for applications where space is a critical consider-

ation. The CLC5957 operates from a single +5V power

supply. Operation over the industrial temperature range of

-40˚C to +85˚C is guaranteed. National Semiconductor tests

each part to verify compliance with the guaranteed specifi-

cations.

Applications

n Cellular base stations

n Digital communications

n Infrared/CCD imaging

n IF sampling

n Electro-optics

n Instrumentation

n Medical imaging

n High definition video

01502928

Block Diagram

01502902

DS015029

www.national.com

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