Rainbow Electronics ADC12441 - Manual

TL H 11017
ADC12441
Dynamically-Tested
Self-Calibrating
12-Bit
Plus
Sign
AD
Converter
with
Sample-and-Hold
November 1994
ADC12441 Dynamically-Tested Self-Calibrating 12-Bit
Plus Sign A D Converter with Sample-and-Hold
General Description
The ADC12441 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 ADC12441 goes through a self-calibration
cycle that adjusts positive linearity and full-scale errors to
less than
g LSB each and zero error to less than
g 1 LSB The ADC12441 also has the ability to go through
an Auto-Zero cycle that corrects the zero error during every
conversion
The analog input to the ADC12441 is tracked and held by
the internal circuitry and therefore does not require an ex-
ternal sample-and-hold A unipolar analog input voltage
range (0V to a5V) or a bipolar range (b5V to a5V) can be
accommodated with
g 5V supplies
The 13-bit word on the outputs of the ADC12441 gives a 2’s
complement representation of negative numbers The digi-
tal inputs and outputs are compatible with TTL or CMOS
logic levels
Features
Y Self-calibration provides excellent temperature stability
Y Internal sample-and-hold
Y Bipolar input range with single a5V reference
Applications
Y Digital signal processing
Y Telecommunications
Y Audio
Y High resolution process control
Y Instrumentation
Key Specifications
Y Resolution 12 bits plus sign
Y Conversion Time 13 8 ms (max)
Y Bipolar Signal Noise 76 5 dB (min)
Y Total Harmonic Distortion b 75 dB (max)
Y Aperture Time 100 ns
Y Aperture Jitter 100 ps
rms
Y Zero Error g 1 LSB (max)
Y Positive Full Scale Error g 1 LSB (max)
Y Power Consumption g 5V 70 mW (max)
Y Sampling rate 55 kHz (max)
TRI-STATE is a registered trademark of National Semiconductor Corporation
Simplified Block Diagram
TL H 11017 – 1
Connection Diagram
Dual-In-Line Package
TL H 11017 – 2
Top View
Order Number
ADC12441CMJ ADC12441CMJ 883
or ADC12441CIJ
See NS Package Number J28A
C1995 National Semiconductor Corporation RRD-B30M115 Printed in U S A