General Description

The MAX1032/MAX1033 multirange, low-power, 14-bit,

successive-approximation, analog-to-digital converters

(ADCs) operate from a single +5V supply and achieve

throughput rates up to 115ksps. A separate digital sup-

ply allows digital interfacing with 2.7V to 5.25V systems

using the SPI™-/QSPI™-/MICROWIRE™-compatible

serial interface. Partial power-down mode reduces the

supply current to 1.3mA (typ). Full power-down mode

reduces the power-supply current to 1µA (typ).

The MAX1032 provides eight (single-ended) or four

(true differential) analog input channels. The MAX1033

provides four (single-ended) or two (true differential)

analog input channels. Each analog input channel is

independently software programmable for seven sin-

An on-chip +4.096V reference offers a small convenient

ADC solution. The MAX1032/MAX1033 also accept an

external reference voltage between 3.800V and 4.136V.

The MAX1032 is available in a 24-pin TSSOP package

and the MAX1033 is available in a 20-pin TSSOP pack-

age. Each device is specified for operation from -40°C

to +85°C.

Applications

Industrial Control Systems

Data-Acquisition Systems

Avionics

Robotics

Features

o Software-Programmable Input Range for Each

Channel

o Differential Input Ranges

o Eight Single-Ended or Four Differential Analog

Inputs (MAX1032)

o Four Single-Ended or Two Differential Analog

Inputs (MAX1033)

o ±16.5V Overvoltage Tolerant Inputs

o Internal or External Reference

o 115ksps Maximum Sample Rate

o Single +5V Power Supply

o 20-/24-Pin TSSOP Package

Multirange Inputs, Serial 14-Bit ADCs

________________________________________________________________

Maxim Integrated Products

1

Pin Configurations

Ordering Information

24

23

22

21

20

19

18

17

1

2

3

4

5

6

7

8

AGND1

AGND2

AVDD2

AGND3

CH2

CH1

CH0

AVDD1

TOP VIEW

REF

REFCAP

DVDD

DVDD0

CH6

CH5

CH4

CH3

16

15

14

13

9

10

11

12

DGND

DGNDO

DOUT

SCLK

SSTRB

DIN

CS

CH7

TSSOP

MAX1032

+

19-3573; Rev 5; 12/11

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.

PART

PIN-PACKAGE

CHANNELS

MAX1032BEUG+

24 TSSOP

8

MAX1033BEUP+

20 TSSOP

4

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

Pin Configurations continued at end of data sheet.

Note: All devices are specified over the -40°C to +85°C oper-

ating temperature range.

+

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