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ADC12062BIVF fiches techniques PDF

National Semiconductor - 12-Bit/ 1 MHz/ 75 mW A/D Converter

Numéro de référence ADC12062BIVF
Description 12-Bit/ 1 MHz/ 75 mW A/D Converter
Fabricant National Semiconductor 
Logo National Semiconductor 





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ADC12062BIVF fiche technique
December 1994
ADC12062
12-Bit 1 MHz 75 mW A D Converter
with Input Multiplexer and Sample Hold
General Description
Using an innovative multistep conversion technique the
12-bit ADC12062 CMOS analog-to-digital converter digitizes
signals at a 1 MHz sampling rate while consuming a maxi-
mum of only 75 mW on a single a5V supply The
ADC12062 performs a 12-bit conversion in three lower-res-
olution ‘‘flash’’ conversions yielding a fast A D without the
cost and power dissipation associated with true flash ap-
proaches
The analog input voltage to the ADC12062 is tracked and
held by an internal sampling circuit allowing high frequency
input signals to be accurately digitized without the need for
an external sample-and-hold circuit The multiplexer output
is available to the user in order to perform additional exter-
nal signal processing before the signal is digitized
When the converter is not digitizing signals it can be placed
in the Standby mode typical power consumption in this
mode is 100 mW
Block Diagram
Features
Y Built-in sample-and-hold
Y Single a5V supply
Y Single channel or 2 channel multiplexer operation
Y Low Power Standby mode
Key Specifications
Y Sampling rate
Y Conversion time
Y Signal-to-Noise Ratio fIN e 100 kHz
Y Power dissipation (fs e 1 MHz)
Y No missing codes over temperature
1 MHz (min)
740 ns (typ)
69 5 dB (min)
75 mW (max)
Guaranteed
Applications
Y Digital signal processor front ends
Y Instrumentation
Y Disk drives
Y Mobile telecommunications
Y Waveform digitizers
Ordering Information
Industrial (b40 C s TA s a85 )
ADC12062BIV
ADC12062BIVF
ADC12062CIV
ADC12062CIVF
ADC12062EVAL
TRI-STATE is a registered trademark of National Semiconductor Corporation
C1995 National Semiconductor Corporation TL H 11490
Package
V44 Plastic Leaded Chip Carrier
VGZ44A Plastic Quad Flat Package
V44 Plastic Leaded Chip Carrier
VGZ44A Plastic Quad Flat Package
Evaluation Board
TL H 11490 – 1
RRD-B30M75 Printed in U S A

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