General Description

The MAX1086–MAX1089 are low-cost, micropower, ser-

ial output 10-bit analog-to-digital converters (ADCs)

available in a tiny 8-pin SOT23. The MAX1086/MAX1088

operate with a single +5V supply. The MAX1087/MAX1089

operate with a single +3V supply. The devices feature a

successive-approximation ADC, automatic shutdown,

fast wake-up (1.4µs), and a high-speed 3-wire inter-

at the maximum sampling rate of 150ksps.

Autoshutdown™ (0.1µA) between conversions results in

reduced power consumption at slower throughput

rates.

The MAX1086/MAX1087 provide 2-channel, single-

ended operation and accept input signals from 0 to

an external clock through the 3-wire SPI™, QSPI™, and

MICROWIRE™–compatible serial interface. Excellent

dynamic performance, low-power, ease of use, and

small package size, make these converters ideal for

portable battery-powered data acquisition applications,

and for other applications that demand low power con-

sumption and minimal space.

Applications

Low Power Data Acquisition

Portable Temperature Monitors

Flowmeters

Touch Screens

Features

o Single-Supply Operation

+3V(MAX1087/MAX1089)

+5V(MAX1086/MAX1088)

o AutoShutdown Between Conversions

o Low Power

200µA at 150ksps

130µA at 100ksps

65µA at 50ksps

13µA at 10ksps

1.5µA at 1ksps

0.2µA in Shutdown

o True-Differential Track/Hold, 150kHz Sampling Rate

o Software-Configurable Unipolar/Bipolar

Conversion (MAX1088/MAX1089 only)

o SPI, QSPI, MICROWIRE–Compatible Interface for

DSPs and Processors

o Internal Conversion Clock

o 8-Pin SOT23 Package

150ksps, 10-Bit, 2-Channel Single-Ended, and

1-Channel True-Differential ADCs in SOT23

________________________________________________________________ Maxim Integrated Products

1

CNVST

REF

GND

1

2

8

7

SCLK

DOUT

AIN1 (AIN+)

AIN2 (AIN-)

SOT23-8

TOP VIEW

( ) ARE FOR THE MAX1088/MAX1089

3

4

6

5

MAX1086

MAX1087

MAX1088

MAX1089

Pin Configuration

19-2036; Rev 0; 5/01

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.

Ordering Information

AutoShutdown is a trademark of Maxim Integrated Products.

SPI and QSPI are trademarks of Motorola Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

PART

TEMP.

RANGE

PIN-

PACKAGE

TOP

MARK

MAX1086EKA-T

-40°C to +85°C

8 SOT23

AAEZ

MAX1087EKA-T

-40°C to +85°C

8 SOT23

AAEV

MAX1088EKA-T

-40°C to +85°C

8 SOT23

AAFB

MAX1089EKA-T

-40°C to +85°C

8 SOT23

AAEX