MC145402

MOTOROLA

1

Advance Information

Serial 13-Bit Linear Codec

(A/D and D/A)

The MC145402 is a 13–bit linear monotonic digital–to–analog and analog–

to–digital converter implemented in a single silicon–gate CMOS IC. Potential

applications include analog interface for Digital Signal Processor (DSP)

applications, high speed modems, telephone systems, SONAR, Adaptive

Differential Pulse Code Modulation (ADPCM) converters, echo cancellers,

repeaters, voice synthesizers, and music synthesizers.

• 60 dB Signal–to–(Noise Plus Distortion) Ratio Typical

• On–Chip Precision Voltage Reference

• Serial Data Ports

• Two’s Complement Coding

•± 5 V Supply Operation

• Sample Rates from 100 Hz to 16 kHz (Both A/D and D/A), 100 Hz to

21.3 kHz (A/D Only), and 100 Hz to 64 kHz (D/A Only)

• Input Sample and Hold Provided On–Chip

• 5 V CMOS Inputs; Outputs Capable of Driving Two LSTTL Loads

• Available in a 16–Pin DIP

• Low Power Consumption: 50 mW Typical, 1 mW Power–Down

BLOCK DIAGRAM

BANDGAP VOLTAGE

REFERENCE

SAMPLE

AND HOLD

D/A

CONVERTER

DATA

SELECTOR

RECEIVE

LATCH

RECEIVE

SHIFT

REGISTER

15

RDD

13

14

RDC

RCE

2

3

Aout

Ain

7

10

12

11

TDF

TDE

TDC

TDD

65

4

16

8

1

9

VDD VSS

VAG

VDG

MSI CCI PDI

SEQUENCE

CONTROLLER

SAMPLE

AND HOLD

COMPARATOR/

OP AMP

SUCCESSIVE

APPROXIMATION

REGISTER

TRANSMIT

LATCH

TRANSMIT

SHIFT

REGISTER

This document contains information on a new product. Specifications and information herein are subject to change without notice.

Order this document

by MC145402/D

MOTOROLA

SEMICONDUCTOR TECHNICAL DATA

PIN ASSIGNMENT

MC145402

L SUFFIX

CERAMIC PACKAGE

CASE 620

ORDERING INFORMATION

MC145402L

Ceramic Package

16

1

16

15

14

13

12

11

10

9

VAG

Aout

Ain

PDI

CCI

MSI

TDF

VSS

VDD

RDD

RCE

RDC

TDC

TDE

VDG

TDD

•

1

2

3

4

5

6

7

8