TLH11017

November 1994

ADC12441 Dynamically-Tested Self-Calibrating 12-Bit

Plus Sign AD 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 (SN 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

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

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

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

138 ms (max)

Y

Bipolar SignalNoise

765 dB (min)

Y

Total Harmonic Distortion

b

75 dB (max)

Y

Aperture Time

100 ns

Y

Aperture Jitter

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

TLH11017 – 1

Connection Diagram

Dual-In-Line Package

TLH11017 – 2

Top View

Order Number

ADC12441CMJ ADC12441CMJ883

or ADC12441CIJ

See NS Package Number J28A

C1995 National Semiconductor Corporation

RRD-B30M115Printed in U S A