
1
Copyright
Cirrus Logic, Inc. 1997
(All Rights Reserved)
Cirrus Logic, Inc.
Crystal Semiconductor Products Division
P.O. Box 17847, Austin, Texas 78760
(512) 445 7222 FAX: (512) 445 7581
http://www.crystal.com
CS5016/14/12A
16, 14, & 12-Bit, Self-Calibrating A/D Converters
Features
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Monolithic CMOS A/D Converters
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Microprocessor Compatible
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Parallel and Serial Output
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Inherent Track/Hold Input
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True 12, 14 and 16-Bit Precision
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Conversion Times:
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CS5016
16.25 μs
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CS5014
14.25 μs
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CS5012A
7.20 μs
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Self Calibration Maintains Accuracy Over
Time and Temperature
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Low Power Dissipation: 150mW
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Low Distortion
Description
The CS5012A/14/16 are 12, 14 and 16-bit monolithic an-
alog to digital converters with conversion times of 7.2 μs,
14.25 μs and 16.25 μs. Unique self-calibration circuitry
insures excellent linearity and differential non- linearity,
with no missing codes. Offset and full scale errors are
kept within 1/2 LSB (CS5012A/14) and 1 LSB (CS5016),
eliminating the need for calibration. Unipolar and bipolar
input ranges are digitally selectable.
The pin compatible CS5012A/14/16 consist of a DAC,
conversion and calibration microcontroller, oscillator,
comparator, microprocessor compatible 3-state I/O, and
calibration circuitry. The input track-and-hold, inherent to
the devices' sampling architecture, acquires the input
signal after each conversion using a fast slewing on-chip
buffer amplifier. This allows throughput rates up to
100 kHz (CS5012A), 56 kHz (CS5014) and 50 kHz
(CS5016).
An evaluation board (CDB5012/14/16) is available which
allows fast evaluation of ADC performance.
ORDERING INFORMATION
See pages 39-41.
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