58.6ksps, 14-Bit, 2-Wire Serial ADC

in a 14-Pin TSSOP

________________________________________________________________ Maxim Integrated Products

1

19-2652; Rev 0; 10/02

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

General Description

The MAX1069 is a low-power, 14-bit successive-

approximation analog-to-digital converter (ADC). The

device features automatic power-down, an on-chip

4MHz clock, a +4.096V internal reference, and an

fast and high-speed modes.

The MAX1069 operates from a single supply and con-

sumes 5mW at the maximum conversion rate of

58.6ksps. AutoShutdown™ powers down the device

between conversions, reducing supply current to less

than 50µA at a 1ksps throughput rate. The option of a

separate digital supply voltage allows direct interfacing

with +2.7V to +5.5V digital logic.

The MAX1069 performs a unipolar conversion on its

single analog input using its internal 4MHz clock. The

full-scale analog input range is determined by the inter-

nal reference or by an externally applied reference volt-

The four address select inputs (ADD0–ADD3) allow up

to sixteen MAX1069 devices on the same bus.

The MAX1069 is packaged in a 14-pin TSSOP and

offers both commercial and extended temperature

ranges. Refer to the MAX1169 for a 16-bit device in a

pin-compatible package.

Applications

Hand-Held Portable Applications

Medical Instruments

Battery-Powered Test Equipment

Solar-Powered Remote Systems

Receive Signal Strength Indicators

System Supervision

Features

400kHz Fast Mode

1.7MHz High-Speed Mode

o +4.75V to +5.25V Single Supply

o +2.7V to +5.5V Adjustable Logic Level

o Internal +4.096V Reference

o Internal 4MHz Conversion Clock

o 58.6ksps Sampling Rate

o AutoShutdown Between Conversions

o Low Power

5.0mW at 58.6ksps

4.2mW at 50ksps

2.0mW at 10ksps

0.23mW at 1ksps

3µW in Shutdown

o Small 14-Pin TSSOP Package

Ordering Information

PART

TEMP RANGE

PIN-

PACKAGE

INL

(LSB)

MAX1069ACUD

0°C to +70°C

14 TSSOP

±

1

MAX1069BCUD

0°C to +70°C

14 TSSOP

±

2

MAX1069CCUD

0°C to +70°C

14 TSSOP

±

3

MAX1069AEUD*

-40°C to +85°C

14 TSSOP

±

1

MAX1069BEUD*

-40°C to +85°C

14 TSSOP

±

2

MAX1069CEUD*

-40°C to +85°C

14 TSSOP

±

3

14

13

12

11

10

9

8

1

2

3

4

5

6

7

ADD3

REF

REFADJ

AGNDS

ADD2

SDA

SCL

DGND

TOP VIEW

MAX1069

AIN

AGND

ADD0

ADD1

TSSOP

Pin Configuration

AutoShutdown is a trademark of Maxim Integrated Products, Inc.

*Future product—contact factory for availability.