14-Bit, 135ksps, Single-Supply ADCs with

Bipolar Analog Input Range

________________________________________________________________ Maxim Integrated Products

1

19-2653; Rev 1; 1/03

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 MAX1157/MAX1159/MAX1175 14-bit, low-power,

successive-approximation analog-to-digital converters

(ADCs) feature automatic power-down, a factory-trimmed

internal clock, and a 14-bit wide parallel interface. The

devices operate from a single +4.75V to +5.25V analog

supply and feature a separate digital supply input for

direct interface with +2.7V to +5.25V digital logic.

The MAX1157 accepts an analog input voltage range

from 0 to +10V while the MAX1159 accepts a bipolar

analog input voltage range of ±10V. The MAX1175

accepts a bipolar analog input voltage range of ±5V.

All devices consume only 23mW at a sampling rate

of 135ksps when using an external reference and

29mW when using the internal +4.096V reference.

AutoShutdown™ reduces supply current to 0.4mA at

10ksps. The MAX1157/MAX1159/MAX1175 are ideal for

high-performance, battery-powered data-acquisition

applications. Excellent AC performance (THD = -100dB)

and DC accuracy (±1LSB INL) make the MAX1157/

MAX1159/MAX1175 ideal for industrial process control,

instrumentation, and medical applications.

The MAX1157/MAX1159/MAX1175 are available in a

28-pin TSSOP package and are fully specified over the

-40°C to +85°C extended temperature range and the

0°C to +70°C commercial temperature range.

Applications

Temperature Sensing and Monitoring

Industrial Process Control

I/O Modules

Data-Acquisition Systems

Precision Instrumentation

Features

o Analog Input Voltage Range ±10V, ±5V, or 0 to 10V

o 14-Bit Wide Parallel Interface

o Single +4.75V to +5.25V Analog Supply Voltage

o Interfaces with +2.7V to +5.25V Digital Logic

o ±1LSB INL (max)

o ±1LSB DNL (max)

o Low Supply Current (MAX1159)

5.3mA (External Reference)

6.2mA (Internal Reference)

5µA AutoShutdown Mode

o Small Footprint

28-Pin TSSOP Package

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

INPUT VOLTAGE

RANGE

INL (LSB)

MAX1157ACUI

0°C to +70°C

28 TSSOP

0 to +10V

±1

MAX1157BCUI

0°C to +70°C

28 TSSOP

0 to +10V

±2

28

27

26

25

24

23

22

21

20

19

18

17

16

15

1

2

3

4

5

6

7

8

9

10

11

12

13

14

D5

D4

D3

D2

D1

D0

REFADJ

N.C.

N.C.

DGND

CS

RESET

REF

AGND

AIN

AGND

EOC

R/C

D13

D12

D11

D10

D9

D8

D7

D6

TSSOP

TOP VIEW

MAX1157

MAX1159

MAX1175

Pin Configuration

AutoShutdown is a trademark of Maxim Integrated Products, Inc.

Ordering Information continued at end of data sheet.