_______________General Description

The MAX152 high-speed, microprocessor (µP)-com-

patible, 8-bit analog-to-digital converter (ADC) uses a

half-flash technique to achieve a 1.8µs conversion

time, and digitizes at a rate of 400k samples per sec-

ond (ksps). It operates with single +3V or dual ±3V

supplies and accepts either unipolar or bipolar inputs.

A

–

P

—

O

—

W

—

E

—

R

—

D

—

O

—

W

—

N

–

pin reduces current consumption to

a typical value of 1µA. The part returns from power-

down and acquires an input signal in less than 900ns,

providing large reductions in supply current in applica-

tions with burst-mode input signals.

The MAX152 is DC and dynamically tested. Its µP inter-

face appears as a memory location or input/output port that

requires no external interface logic. The data outputs use

latched, three-state buffered circuitry for direct connection

to a µP data bus or system input port. The ADC's input/ref-

erence arrangement enables ratiometric operation. A fully-

assembled evaluation kit provides a proven PC board lay-

out to speed prototyping and design.

_______________________Applications

Cellular Telephones

Portable Radios

Battery-Powered Systems

Burst-Mode Data Acquisition

Digital Signal Processing

Telecommunications

High-Speed Servo Loops

___________________________Features

o Single +3.0V to +3.6V Supply

o 1.8µs Conversion Time

o Power-Up in 900ns

o Internal Track/Hold

o 400ksps Throughput

o Low Power: 1.5mA (Operating Mode)

1µA

(Power-Down Mode)

o 300kHz Full-Power Bandwidth

o 20-Pin DIP, SO and SSOP Packages

o No External Clock Required

o Unipolar/Bipolar Inputs

o Ratiometric Reference Inputs

o 2.7V Version Available – Contact Factory

______________Ordering Information

* Contact factory for dice specifications.

** Contact factory for availability and processing to MIL-STD-883.

+3V, 8-Bit ADC with 1µA Power-Down

________________________________________________________________

Maxim Integrated Products

1

20

19

18

17

16

15

14

13

12

11

1

2

3

4

5

6

7

8

9

10

VDD

VSS

PWRDN

D7 (MSB)

D6

D5

D4

CS

VREF+

VREF-

VIN

D0 (LSB)

D1

D2

D3

WR/RDY

MODE

RD

INT

GND

DIP/SO/SSOP

MAX152

__________________Pin Configuration

TOP VIEW

THREE-

STATE

DRIVERS

4-BIT

DAC

4-BIT

FLASH

ADC

4-BIT

FLASH

ADC

(4LSB)

D0-D7

DATA

OUT

PINS

2-5,

14-17

VREF+

VREF-

VIN

12

11

1

PWRDN

18

20

VDD

10

GND

7

6

13

89

19

RD

INT

VSS

MODE

MAX152

TIMING AND CONTROL CIRCUITRY

VREF+

16

________________Functional Diagram

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

PART

TEMP. RANGE

MAX152CPP

0°C to +70°C

MAX152CWP

0°C to +70°C

MAX152CAP

0°C to +70°C

MAX152C/D

0°C to +70°C

MAX152EPP

-40°C to +85°C

MAX152EWP

-40°C to +85°C

MAX152EAP

-40°C to +85°C

MAX152MJP

-55°C to +125°C

PIN-PACKAGE

20 Wide SO

20 SSOP

Dice*

20 Plastic DIP

20 Wide SO

20 SSOP

20 CERDIP**

20 Plastic DIP

19-0119; Rev. 1; 12/93

Evaluation

Kit

Manual

Follows

Data

Sheet