MAX1241BESA Maxim, MAX1241BESA Datasheet

MAX1241BESA

Manufacturer Part Number

MAX1241BESA

Description

+2.7V / Low-Power / 12-Bit Serial ADCs in 8-Pin SO

Manufacturer

Maxim

Datasheets

1.MAX1241BESA.pdf (16 pages)

2.MAX1241BESA.pdf (16 pages)

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Download datasheet (281Kb)

The MAX1240/MAX1241 are low-power, 12-bit analog-

to-digital converters (ADCs) available in 8-pin pack-

ages. The MAX1240 operates with a single +2.7V to

+3.6V supply, and the MAX1241 operates with a single

+2.7V to +5.25V supply. Both devices feature a 7.5µs

successive-approximation ADC, a fast track/hold

(1.5µs), an on-chip clock, and a high-speed, 3-wire ser-

ial interface.

Power consumption is only 37mW (V

73ksps maximum sampling speed. A 2µA shutdown

mode reduces power at slower throughput rates.

The MAX1240 has an internal 2.5V reference, while the

MAX1241 requires an external reference. The MAX1241

accepts signals from 0V to V

input range includes the positive supply rail. An exter-

nal clock accesses data from the 3-wire interface,

which connects directly to standard microcontroller I/O

ports. The interface is compatible with SPI™, QSPI™,

and MICROWIRE™.

Excellent AC characteristics and very low power com-

bined with ease of use and small package size make

these converters ideal for remote-sensor and data-

acquisition applications, or for other circuits with

demanding power consumption and space require-

ments. The MAX1240/MAX1241 are available in 8-pin

DIP and SO packages.

19-1155; Rev 2; 11/98

SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp.

__________________General Description

For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.

For small orders, phone 1-800-835-8769.

TOP VIEW

Battery-Powered Systems

Portable Data Logging

Isolated Data Acquisition

Process Control

Instrumentation

SHDN

REF

AIN

________________________________________________________________ Maxim Integrated Products

MAX1240

MAX1241

DIP/SO

Pin Configuration

REF

, and the reference

Applications

SCLK

DOUT

GND

= 3V) at the

12-Bit Serial ADCs in 8-Pin SO

Ordering Information continued at end of data sheet.

* Dice are specified at T

________________________________Features

MAX1240ACPA

MAX1240BCPA

MAX1240CCPA

MAX1240ACSA

MAX1240BCSA

MAX1240CCSA

SCLK

SHDN

MAX1240BC/D

REF

Single-Supply Operation:

12-Bit Resolution

Internal 2.5V Reference (MAX1240)

Small Footprint: 8-Pin DIP/SO Packages

Low Power: 3.7µW (73ksps, MAX1240)

Internal Track/Hold

SPI/QSPI/MICROWIRE 3-Wire Serial Interface

Internal Clock

AIN

PART

+2.7V to +3.6V (MAX1240)

+2.7V to +5.25V (MAX1241)

3mW (73ksps, MAX1241)

66µW (1ksps, MAX1241)

5µW (power-down mode)

+2.7V, Low-Power,

(MAX1240 ONLY)

2.5V REFERENCE

CONTROL

LOGIC

T/H

TEMP. RANGE

0°C to +70°C

= +25°C, DC parameters only.

Ordering Information

Functional Diagram

GND

12-BIT

SAR

CLOCK

INT

8 Plastic DIP

8 SO

Dice*

PACKAGE

PIN-

MAX1240

MAX1241

OUTPUT

SHIFT

(LSB)

INL

±1

DOUT

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