General Description

The MAX1177 is a 16-bit, low-power, successive-

approximation analog-to-digital converter (ADC) featur-

ing automatic power-down, a factory-trimmed internal

clock, and a byte-wide parallel interface. The device

operates from a single +4.75V to +5.25V analog supply

and features a separate digital supply input for direct

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

The MAX1177 accepts an analog input voltage range

from 0 to +10V. It consumes no more than 26.5mW at a

sampling rate of 135ksps when using an external refer-

ence, and 31mW when using the internal +4.096V refer-

ence. AutoShutdown™ reduces supply current to

0.4mA at 10ksps.

The MAX1177 is ideal for high-performance, battery-

powered, data-acquisition applications. Excellent AC

performance (THD = -100dB) and DC accuracy (±3

LSB INL) make this device ideal for industrial process

control, instrumentation, and medical applications.

The MAX1177 is available in a 20-pin TSSOP package

and is 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 Byte-Wide Parallel Interface

o Analog Input Voltage Range: 0 to +10V

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

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

o ±3 LSB INL

o ±1 LSB DNL

o Low Supply Current (max)

2.9mA (External Reference)

3.8mA (Internal Reference)

5µA AutoShutdown Mode

o Small Footprint

o 20-Pin TSSOP Package

16-Bit, 135ksps, Single-Supply ADC

with 0 to 10V Input Range

________________________________________________________________ Maxim Integrated Products

1

D0–D7

OR

D8–D15

µP DATA

BUS

AGND DGND

+5V ANALOG

+5V DIGITAL

ANALOG INPUT

AIN

HBEN

EOC

CS

R/C

REF

REFADJ

HIGH

BYTE

LOW

BYTE

10

µF

0.1

µF

0.1

µF0.1µF

MAX1177

Typical Operating Circuit

19-2597; Rev 0; 8/03

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.

AutoShutdown is a trademark of Maxim Integrated Products, Inc.

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

MAX1177ACUP

0

°C to +70°C

20 TSSOP

MAX1177BCUP

0

°C to +70°C

20 TSSOP

MAX1177CCUP

0

°C to +70°C

20 TSSOP

MAX1177AEUP

-40

°C to +85°C

20 TSSOP

MAX1177BEUP

-40

°C to +85°C

20 TSSOP

MAX1177CEUP

-40

°C to +85°C

20 TSSOP

Pin Configuration and Functional Diagram appear at end of

data sheet.