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National Semiconductor - Dynamically-Tested Self-Calibrating 12-Bit Plus Sign A/D Converter with Sample-and-Hold

Numéro de référence ADC12451
Description Dynamically-Tested Self-Calibrating 12-Bit Plus Sign A/D Converter with Sample-and-Hold
Fabricant National Semiconductor 
Logo National Semiconductor 





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ADC12451 fiche technique
December 1994
ADC12451 Dynamically-Tested Self-Calibrating
12-Bit Plus Sign A D Converter with Sample-and-Hold
General Description
The ADC12451 is a CMOS 12-bit plus sign successive ap-
proximation analog-to-digital converter whose dynamic
specifications (S N THD etc ) are tested and guaranteed
On request the ADC12451 goes through a self-calibration
cycle that adjusts linearity zero and full-scale errors The
ADC12451 also has the ability to go through an Auto-Zero
cycle that corrects the zero error during every conversion
The analog input to the ADC12451 is tracked and held by
the internal circuitry so an external sample-and-hold is not
required The ADC12451 has a S H control input which di-
rectly controls the track-and-hold state of the A D A unipo-
lar analog input voltage range (0V to a5V) or a bipolar
range (b5V to a5V) can be accommodated with g5V sup-
plies
The 13-bit data result is available on the eight outputs of the
ADC12451 in two bytes high-byte first and sign extended
The digital inputs and outputs are compatible with TTL or
CMOS logic levels
Applications
Y Digital Signal Processing
Y Audio
Y Telecommunications
Y High Resolution Process Control
Y Instrumentation
Features
Y Self-calibration provides excellent temperature stability
Y Internal sample-and-hold
Y 8-bit mP DSP interface
Y Bipolar input range with a single a5V reference
Key Specifications
Y Resolution
Y Conversion Time
Y Sampling Rate
Y Bipolar Signal Noise
Y Total Harmonic Distortion
Y Aperture Time
Y Aperture Jitter
Y Zero Error
Y Positive Full-Scale Error
Y Power Consumption g5V
12 bits plus sign
7 7 ms (max)
83 kHz (max)
73 5 dB (min)
b78 0 dB (max)
100 ns
100 psrms
g2 LSB (max)
g1 5 LSB (max)
113 mW (max)
Simplified Block Diagram
Connection Diagram
Dual-In-Line Package
TRI-STATE is a registered trademark of National Semiconductor Corporation
C1995 National Semiconductor Corporation TL H 11025
Top View
TL H 11025 – 2
TL H 11025 – 1
Ordering Information
Industrial
(b40 C s TA s 85 C)
ADC12451CIJ
Package
J24A
Military
(b55 C s TA s 125 C)
Package
ADC12451CMJ
ADC12451CMJ 883
J24A
RRD-B30M115 Printed in U S A

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