clc952 National Semiconductor Corporation, clc952 Datasheet

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clc952

Manufacturer Part Number
clc952
Description
12-bit, 41msps Monolithic A/d Converter
Manufacturer
National Semiconductor Corporation
Datasheet

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© 1997 National Semiconductor Corporation
Printed in the U.S.A.
N
CLC952
12-bit, 41MSPS Monolithic A/D Converter
General Description
The CLC952 is a complete monolithic 12-bit 41MSPS analog-to-
digital converter system. Fabricated from a 0.8 m 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.
Block Diagram
CLC952
V
in
Adjust
Input
Amp
Offset
Generator
ENCODE
Timing
2.4V Voltage
Reference
Amplifier
V
T/H
REF
12-bit Subranging
Features
Applications
Quantizer
41MSPS
Wide dynamic range
SFDR: 72dBc
SNR: 64dB
Low power dissipation: 660mW
Ground centered,
DC-coupled analog input
Excellent PSRR: >60dB
Very small package: 28-pin SSOP
Low cost
Cellular base-stations
Digital communications
Infrared/CCD imaging
IF sampling
Electro-optics
Instrumentation
Medical imaging
High definition video
TTL Output
Buffer
September 1997
http://www.national.com
D11 MSB
D0 LSB

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clc952 Summary of contents

Page 1

... 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 ...

Page 2

... CLC952 Electrical Characteristics PARAMETERS DYNAMIC PERFORMANCE small-signal bandwidth large-signal bandwidth slew rate overvoltage recovery time effective aperture delay aperture jitter NOISE AND DISTORTION (40.96MSPS) signal-to-noise ratio (w/o harmonics) 2.0MHz 9.67MHz 19.5MHz spurious-free dynamic range 2.0MHz 9.67MHz 19.5MHz intermodulation distortion 19.49MHz (f ), 19.9MHz (f ...

Page 3

... Package Thermal Resistance -65°C to 150°C 10sec Package 28-pin SSOP Transistor count Ordering Information 28-pin SSOP (commercial part) 28-pin SSOP (industrial part) Fully loaded evaluation board with CLC952 … ready for test 1.6ns A N+2 N+1 N+1 N+2 N-2 N 15ns typ. ...

Page 4

... CLC952 Typical Performance Characteristics Single Tone Output Spectrum 0 -20 -40 -60 -80 -100 Frequency (MHz) Single Tone Output Spectrum 0 -20 -40 -60 -80 -100 Frequency (MHz) SFDR & SNR vs. Input Amplitude SFDR 40 SNR 30 20 Sample Rate = 40.96MSPS A = 0.41MHz IN 10 ...

Page 5

... CLC952 Typical Performance Characteristics SFDR & SNR vs. Input Amplitude SFDR SNR 30 20 Sample Rate = 40.96MSPS A = 9.67MHz IN 10 -50 -40 -30 -20 Input Amplitude (dBFS) SFDR & SNR vs. Sample Rate 90 SFDR 80 70 SNR – 1dB A = 0.41MHz Sample Rate (MSPS) SFDR & ...

Page 6

... CLC952 Typical Performance Characteristics SFDR & SNR vs. Input Frequency SNR 55 45 30.72MSPS 1 0.1 Input Frequency (MHz INDEX MARK A A1 Notes: 1. All dimensions are in millimeters 2. Dimensions D and E1 do not include mold protrusion. Allowable protrusion is 0.20mm per side. http://www.national.com (V = +5V ...

Page 7

... Bypass to digital ground with a 0.1 F capacitor. CC DGND (Pin 16) Digital ground. ___ D0-D11 (Pins 17-28) Digital data outputs are CMOS and TTL compatible the LSB and D11 MSB is inverted. Output coding is two’s complement. CLC952 Pin Definitions 28 D11 (MSB INV) 27 D10 ...

Page 8

... National’s products are not authorized for use as critical components in life support devices or systems without the express written approval of the president of National Semiconductor Corporation. As used herein: 1. Life support devices or systems are devices or systems which, a) are intended for surgical implant into the body support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury to the user ...

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