_______________General Description

The MAX154/MAX158 and MX7824/MX7828 are high-

speed, multi-channel analog-to-digital converters

(ADCs). The MAX154 and MX7824 have four analog

input channels, while the MAX158 and MX7828 have

eight channels. Conversion time for all devices is 2.5µs.

The MAX154/MAX158 also feature a 2.5V on-chip refer-

ence, forming a complete high-speed data acquisition

system.

All four converters include a built-in track/hold, eliminat-

ing the need for an external track/hold with many input

signals. The analog input range is 0V to +5V, although

the ADC operates from a single +5V supply.

Microprocessor interfaces are simplified by the ADC’s

ability to appear as a memory location or I/O port without

the need for external logic. The data outputs use latched,

three-state buffer circuitry to allow direct connection to a

microprocessor data bus or system input port.

The MX7824 and MX7828 are pin compatible with

Analog Devices’ AD7824 and AD7828. The MAX154

and MAX158, which feature internal references, are also

compatible with these products.

________________________Applications

Digital Signal Processing

High-Speed Data Acquisition

Telecommunications

High-Speed Servo Control

Audio Instrumentation

____________________________Features

o One-Chip Data Acquisition System

o Four or Eight Analog Input Channels

o 2.5µs per Channel Conversion Time

o Internal 2.5V Reference (MAX154/MAX158 only)

o Built-In Track/Hold Function

o Single +5V Supply Operation

o No External Clock

o New Space-Saving SSOP Package

______________Ordering Information

CMOS, High-Speed, 8-Bit ADCs

with Multiplexer

________________________________________________________________

Maxim Integrated Products

1

24

23

22

21

20

19

18

17

1

2

3

4

5

6

7

8

NC

A0

A1

AIN1

AIN2

AIN3

AIN4

TOP VIEW

DB7

( ) ARE FOR MAX154/MAX158 ONLY.

DB6

DB5

DB4

DB2

DB1

DB0

TP (REF OUT)

16

15

14

13

9

10

11

12

CS

RDY

GND

INT

RD

DB3

DIP/SO/SSOP

MAX154

MX7824

28

27

26

25

24

23

22

21

1

2

3

4

5

6

7

8

AIN7

AIN8

A0

AIN3

AIN4

AIN5

AIN6

A1

A2

DB7

DB6

DB0

TP (REF OUT)

AIN1

AIN2

20

19

18

17

9

10

11

12

DB5

DB4

CS

RDY

RD

DB3

DB2

DB1

DIP/SO/SSOP

MAX158

MX7828

16

15

13

14

GND

INT

__________________________________________________________Pin Configurations

Call toll free 1-800-998-8800 for free samples or literature.

19-0255; Rev 2; 4/94

PART

MX7824LN

MX7824KN

MX7824LCWG

0°C to +70°C

0°C to +70°C

0°C to +70°C

TEMP. RANGE

PIN-PACKAGE

24 Narrow

Plastic DIP

24 Narrow

Plastic DIP

24 Wide SO

MX7824KCWG

MX7824LCAG

MX7824KCAG

0°C to +70°C

0°C to +70°C

0°C to +70°C

24 Wide SO

24 SSOP

24 SSOP

Ordering Information continued on last page.

ERROR

(LSB)

±1

±1

±1