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. Linear· and

Interface

Circuits

. Applications . 1987

Volutne 3: Peripheral Drivers,

Data Acquisition Systetns,

Hall ... Effect Devices

. TEXAS

INSTRUMENTS

SLYA003

Linear and Interface Circuits

Applications

Volume 3

Peripheral Drivers, Data Acquisition Systems,

and Hall Effect Devices

D.E. Pippenger and E.J. Tobaben

Linear Applications

Contributors

C.L. McCollum

and Field Application Engineering ii

IMPORTANT NOTICE

Texas Instruments (Til reserves the right to make changes in the devices or the device specifications identified in this publication without notice. TI advises its customers to obtain the latest version of device specifications to verify, before placing orders, that the information being relied upon by the customer is current. TI warrants performance of its semiconductor products, including SNJ and SMJ devices, to current specifications in accordance with TI's standard warranty. Testing and other quality control techniques are utilized to the extent TI deems such testing necessary to support this warranty. Unless mandated by government requirements, specific testing of all parameters of each device is not necessarily performed. In the absence of written agreement to the contrary, TI assumes no liability for TI applications assistance, customer's product design, or infringement of patents or copyrights of third parties by or arising from use of semiconductor devices described herein. Nor does TI warrant or represent that any license, either express or implied, is granted under any patent right, copyright, or other intellectual property right of TI covering or relating to any combination, machine, or process in which such semiconductor devices might be or are used.

Specifications contained in

this data book supersede all data for these products published by

TI in the United States before September 1986.

ISBN 0-89512-201-4

Copyright © 1987. Texas Instruments Incorporated

Contents

Title Page

Section 10

Peripheral Drivers

PERIPHERAL DRIVERS ........................................................................ . 10-1

Device Considerations and Product Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-1

Basic Configurations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-1

Typical Requirements ..................................................................... 10-1 Power ........................................................................ ........ 10-1

Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-2

Current. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-2

Speed. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-2

Logic ........................................................................ ........ 10-2

Peripheral Driver Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-2

SN75431, '461 and '471 Series ............................................................. 10-4 SN75446 and SN75476 Series .............................................................. 10-4

SN75436, SN75437 A and SN75438. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-5

SN75435 Quad Driver ..................................................................... 10-6

SN75440

Quad Peripheral Driver ........................................................... 10-7 SN75603, SN75604, and SN75605 .......................................................... 10-7

SN75372

Dual and SN75374 Quad Power FET Drivers ......................................... 10-8

DS3680 Quad Telephone Relay Driver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-9

SN75064IULN2064 Series

Quad Peripheral Drivers .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-10

SN75068IULN2068 and SN75069/ULN2069 Quad Darlington Switches .......................... " 10-12

SN75074/ULN2074

and SN75075IULN2075 Quad Darlington Sink or Source Drivers ............... 10-12 SN75465 and ULN2001A Series Seven Channel Darlington Transistor Arrays ...................... 10-12 UDN2841 and UDN2845 Quad High Current Darlington Drivers ................................. 10-13

Peripheral Driver Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 10-14

Peripheral

Driver-Opto Applications ............................................................ 10-14 Driving Tungsten Filament, or Equivalent, Incandescent Lamps .................................. 10-14

Driving Remotely Located LED Devices

..................................................... 10-17

Relay and

Solenoid Driver Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-17

Printer

Hammer Driver Application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-18

Driving a Reversible

Solenoid .............................................................. 10-18

Opto Isolated and Time Controlled Reversible Solenoid Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-18

Power Solenoid Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-21

Intelligent Switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-21

Automotive Lights On Warning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-21

Driving Motors ........................................................................ ....... 10-21

"H" or Bridge Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-21

"H" Motor Drive for Negative Supplies ...................................................... " 10-22

Speed Controlled, Reversible DC Motor Drive with the SN75603 and SN75604 . . . .. . . . . . . . . . . . . . . . . .. 10-22

Driving

Power FETs for DC Motor Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-23

Stepper Motor Drive ........................................................................ 10-23

Driving Data Transmission Lines ................................................................ 10-26

iii

Title Page

Section 11

Data Acquisition Systems

DATA ACQUISITION SySTEMS ............................................ , ................. , ... 11-1 iv

Typical Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-1

Microprocessor-Controlled DAS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ... 11-2

Basic Uses of a DAS ........................................................................ .. 11-2

Data Logging

................................ ;............................................. 11-2 Signal Analysis ........................................................................ ..... 11-2

Process Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-2

Basic Sampling Concepts

11-2 Types of Signals ..................................................................... ,........ 11-3

DC Signals

......... 11-3

Dynamic Signals

............................................ .' . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-3

Deterministic Signals

11-3

Random Signals

............................................... ' . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-4

Frequently

Used Terms and Concepts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-5

The Sampling Theorem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-5

Aliasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-6

The Nyquist Criterion

11-6

Aliasing

Filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-6

Quantization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-7

Binary Codes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-7

Straight and Offset Binary Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-7

One's and Two's Complement Codes .............. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-8

Absolute-Value-Plus-Sign Code

............................................................. 11-8

Gray Code

...... 11-8

BCD Code

...... 11-9

Signal Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-9

A Data Requisition Example

.................................................................... 11-10 Summary of Design Considerations ............................................................ 11-12

System Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-12

Understanding Major System Parameters ........................................................ 11-12

Methods

of AID Conversion .................................................................... 11-14

Key Selection Criteria for

AID Converters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-14

Number

of Bits .............................. : .............................................. 11-14

Conversion

Speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-14

Conversion Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-14

Conversion Techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-15 Single-Slope AID Converter .................................................................. 11-15

Dual-Slope

AID Converter ................................................................... 11-16

Successive-Approximation Converters

.......................................................... 11-17

Binary Bit Weighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-19

Creating a Digital Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-19 Flash AID Converters ....................................................................... 11-20

Device Types ............. , .. '" ....... , ... " .......... , " .................................... 11-21

ADC0803 and ADC0805 8-Bit Successive-Approximation AID Converters with Differential Inputs ....... 11-21

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-21

Principles

of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-21

ADC0808, ADC0809 CMOS Analog-to-Digital Converters with 8-Channel Multiplexers ............... , 11-23

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-23

Multiplexer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-24

Converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-25

Title Page

ADC0831, ADC0832, ADC0834, ADC0838 2-, 4-, 8-Channel

AID Peripherals with Serial Control

and Multiplexer Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-26

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-26

Principles

of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-33

TL500C thru TL503C Analog-to-Digital Converter Building Blocks TL500C/TL501C .................. 11-34

TL502C/TL503C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-34

General Overall Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-35

Description

of TL500C and TL501C Analog Processors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-37

Description

of TL502C/503C Digital Processors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-37

Principles

of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-39

Auto-Zero

Phase ........................................................................ . 11-41

Integrate-Input Phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-41

Integrate-Reference Phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-41

Capacitor Selection Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-41

Bypassing and Stray Coupling .............................................................. 11-41 TL505C Analog-to-Digital Converter ........................................................... 11-41

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-41

Definition of Terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-42

Principles

of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-42

TL507I,

TL507C Analog-to-Digital Converter ................................................... 11-44

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-44

Definition

of Terms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-44

Principles

of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-44

TLC532, TLC533 LinCMOS 8-Bit Analog-to-Digital Peripherals with 5 Analog and

6 MUltipurpose Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-47

Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-47

Principles

of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-48

TLC540, TLC541 8-Bit Analog-to-Digital Peripherals with Serial Control and

11 Inputs ................ 11-51

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. II-51

Principles

of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-51

TLC548, TLC549 LinCMOS 8-Bit Analog-to-Digital Converters with Serial Control ................... 11-53

Description

...... II-53

Principles

of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-54

TL0808, TL0809 Low-Power CMOS Analog-to-Digital Converter with 8-Channel Multiplexers .......... 11-55

Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-55

Principles

of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. II-56

Multiplexer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-57

Converter

......... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-57

AID Converter Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 11-58

Interface for

ADC0803, ADC0804, and ADC0805 Converters to Zilog Z80A and Z80 Microprocessors ...................................................................... 11-58

Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-59

Timing Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.. 11-59

Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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