Features

s

41MSPS

s

Wide dynamic range

SFDR: 72dBc

SNR: 64dB

s

Low power dissipation: 660mW

s

Ground centered,

DC-coupled analog input

s

Excellent PSRR: >60dB

s

Very small package: 28-pin SSOP

s

Low cost

Applications

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Cellular base-stations

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Digital communications

s

Infrared/CCD imaging

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IF sampling

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Electro-optics

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Instrumentation

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Medical imaging

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High definition video

General Description

The CLC952 is a complete monolithic 12-bit 41MSPS analog-to-

digital converter system. Fabricated from a 0.8

µm BiCMOS

process, the CLC952’s on-chip features include a very

linear wideband track-and-hold, bandgap voltage reference and a

proprietary 12-bit multi-stage quantizer. The CLC952 has been

designed for wideband digital communications receivers and

features a 72dBc spurious-free dynamic range (SFDR) and 64dB

signal-to-noise ratio (SNR).

The CLC952 operates from a standard ±5V power supply and

features excellent noise isolation with its >60dB power-supply

rejection ratio (PSRR). All digital control functions and output

registers are TTL compatible. The CLC952AC operates over the

commercial temperature range (0°C to 70°C), and the CLC952AJ

operates over the industrial temperature range (-40°C to 85°C)

version. The CLC952 is available in a 28-pin SSOP that provides

an extremely small footprint for reduced board space. National

Semiconductor thoroughly tests each part to verify full

compliance with guaranteed specifications.

CLC952

12-bit, 41MSPS Monolithic A/D Converter

N

September 1997

12-bit Subranging

Quantizer

T/H

Amplifier

TTL Output

Buffer

Timing

Generator

2.4V Voltage

Reference

Input

Amp

D11 MSB

•

•

D0 LSB

Offset

Adjust

ENCODE

© 1997 National Semiconductor Corporation

http://www.national.com

Printed in the U.S.A.

CLC952

Block Diagram