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_______________General Description

Maxim’s MX7575/MX7576 are high-speed (5µs/10µs),

microprocessor (µP) compatible, 8-bit analog-to-digital

converters (ADCs). The MX7575 provides an on-chip

track/hold function that allows full-scale signals up to

50kHz (386mV/µs slew rate) to be acquired and digi-

tized accurately. Both ADCs use a successive-approxi-

mation technique to achieve their fast conversions and

low power dissipation. The MX7575/MX7576 operate

with a +5V supply and a 1.23V external reference. They

The MX7575/MX7576 are easily interfaced to all popu-

lar 8-bit µPs through standard

CS and RD control sig-

nals. These signals control conversion start and data

access. A

BUSY signal indicates the beginning and

end of a conversion. Since all the data outputs are

latched and three-state buffered, the MX7575/MX7576

can be directly tied to a µP data bus or system l/O port.

Maxim also makes the MAX165, a plug-in replacement

for the MX7575 with an internal 1.23V reference. For

applications that require a differential analog input and

an internal reference, the MAX166 is recommended.

________________________Applications

Digital Signal Processing

High-Speed Data Acquisition

Telecommunications

Audio Systems

High-Speed Servo Loops

Low-Power Data Loggers

____________________________Features

o Fast Conversion Time:

5µs (MX7575)

10µs (MX7576)

o Built-In Track/Hold Function (MX7575)

o Low Total Unadjusted Error (±1LSB max)

o 50kHz Full-Power Signal Bandwidth (MX7575)

o Single +5V Supply Operation

o 8-Bit µP Interface

o 100ns Data-Access Time

o Low Power: 15mW

o Small-Footprint Packages

CMOS, µP-Compatible, 5µs/10µs, 8-Bit ADCs

________________________________________________________________

Maxim Integrated Products

1

DAC

COMP

LATCH AND

THREE-STATE

OUTPUT DRIVERS

SAR

TRACK/

HOLD

CLOCK

OSCILLATOR

CONTROL

LOGIC

AIN

AGND

REF

CLK

CS

RD

BUSY

DGND

TP

16

18

49

6

14

D7

..

D0

15

17

5

1

2

3

MX7575

Functional Diagrams continued at end of data sheet.

_______________Functional Diagrams

18

17

16

15

14

13

12

11

1

2

3

4

5

6

7

8

REF

AIN

AGND

D0 (LSB)

D1

D2

D3

D4

CS

RD

TP (MODE)

BUSY

CLK

D7 (MSB)

D6

D5

DGND

TOP VIEW

10

9

DIP/SO

MX7575

MX7576

( ) ARE FOR MX7576 ONLY.

Pin Configurations continued at end of data sheet.

_________________Pin Configurations

19-0876; Rev 1; 5/96

PART

MX7575JN

MX7575KN

MX7575JCWN

0°C to +70°C

0°C to +70°C

0°C to +70°C

TEMP. RANGE

PIN-PACKAGE

18 Plastic DIP

18 Plastic DIP

18 Wide SO

______________Ordering Information

Ordering Information continued at end of data sheet.

* Contact factory for dice specifications.

** Contact factory for availability.

MX7575KCWN

0°C to +70°C

18 Wide SO

MX7575JP

0°C to +70°C

20 PLCC

MX7575KP

0°C to +70°C

20 PLCC

INL

(LSB)

±1

±1/2

±1

±1/2

±1

±1/2

MX7575J/D

0°C to +70°C

Dice*

±1

MX7575AQ

-25°C to +85°C

18 CERDIP**

MX7575BQ

-25°C to +85°C

18 CERDIP**

±1

±1/2