General Description

The MAX11634–MAX11637 are serial 12-bit analog-to-

digital converters (ADCs) with an internal reference and

true differential track/hold. These devices feature on-chip

FIFO, scan mode, internal clock mode, internal averag-

ing, and AutoShutdown™. The maximum sampling rate is

300ksps using an external clock. The MAX11636/

MAX11637 have 8 input channels and the MAX11634/

MAX11635 have 4 input channels. These four devices

operate from either a +3V supply or a +5V supply, and

contain a 10MHz SPI™-/QSPI™-/MICROWIRE™-compati-

ble serial port.

The MAX11634–MAX11637 are available in a 16-pin

QSOP package. All four devices are specified over the

extended -40°C to +85°C temperature range.

Applications

System Supervision

Data-Acquisition Systems

Industrial Control Systems

Patient Monitoring

Data Logging

Instrumentation

Features

o Analog Multiplexer with True Differential Track/Hold

8-/4-Channel Single-Ended

4-/2-Channel True Differential

Unipolar or Bipolar Inputs

o Single Supply

2.7V to 3.6V (MAX11635/MAX11637)

4.75V to 5.25V (MAX11634/MAX11636)

o 16-Entry First-In/First-Out (FIFO)

o Scan Mode, Internal Averaging, and Internal Clock

o Accuracy: ±1 LSB INL, ±1 LSB DNL, No Missing

Codes Over Temperature

o 10MHz 3-Wire SPI-/QSPI-/MICROWIRE-Compatible

Interface

o Small 16-Pin QSOP Package

12-Bit, 300ksps ADCs with Differential

Track/Hold, and Internal Reference

________________________________________________________________

Maxim Integrated Products

1

19-5962; Rev 1; 9/11

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Ordering Information/Selector Guide

PART

NUMBER OF INPUTS

SUPPLY VOLTAGE (V)

TEMP RANGE

PIN-PACKAGE

MAX11634EEE+T

4 Single-Ended/

2 Differential

4.75 to 5.25

-40°C to +85°C

16 QSOP

MAX11635EEE+T

4 Single-Ended/

2 Differential

2.7 to 3.6

-40°C to +85°C

16 QSOP

MAX11636EEE+T

8 Single-Ended/

4 Differential

4.75 to 5.25

-40°C to +85°C

16 QSOP

MAX11637EEE+T

8 Single-Ended/

4 Differential

2.7 to 3.6

-40°C to +85°C

16 QSOP

AutoShutdown is a trademark of Maxim Integrated Products, Inc.

SPI/QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

+

Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

EVALUATION

KIT

AVAILABLE