MAX1265 Maxim, MAX1265 Datasheet

MAX1265

Manufacturer Part Number

MAX1265

Description

265ksps / +3V / 6-/2-Channel / 12-Bit ADCs with +2.5V Reference and Parallel Interface

Manufacturer

Maxim

Datasheet

1.MAX1265.pdf (19 pages)

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The MAX1265/MAX1267 low-power, 12-bit analog-to-

digital converters (ADCs) feature a successive-approxi-

mation ADC, automatic power-down, fast wake-up

(2µs), an on-chip clock, +2.5V internal reference, and a

high-speed 12-bit parallel interface. They operate with

a single +2.7V to +3.6V analog supply.

Power consumption is only 5.4mW at the maximum

sampling rate of 265ksps. Two software-selectable

power-down modes enable the MAX1265/MAX1267 to

be shut down between conversions; accessing the par-

allel interface returns them to normal operation.

Powering down between conversions can reduce sup-

ply current below 10µA at lower sampling rates.

Both devices offer software-configurable analog inputs

for unipolar/bipolar and single-ended/pseudo-differen-

tial operation. In single-ended mode, the MAX1265 has

six input channels and the MAX1267 has two (three

input channels and one input channel, respectively,

when in pseudo-differential mode).

Excellent dynamic performance and low power, com-

bined with ease of use and small package size, make

these converters ideal for battery-powered and data-

acquisition applications or for other circuits with demand-

ing power-consumption and space requirements. The

MAX1265 is offered in a 28-pin QSOP package, while the

MAX1267 comes in a 24-pin QSOP. For pin-compatible

+5V, 12-bit versions, refer to the MAX1266/MAX1268

data sheet.

19-2721; Rev 0; 04/03

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.

MAX1265ACEI

MAX1265BCEI

MAX1265AEEI

MAX1265BEEI

MAX1267ACEG

MAX1267BCEG

MAX1267AEEG

MAX1267BEEG

Industrial Control Systems

Energy Management

Data-Acquisition Systems

PART

with +2.5V Reference and Parallel Interface

-40°C to +85°C

TEMP RANGE

________________________________________________________________ Maxim Integrated Products

0°C to +70°C

Ordering Information

265ksps, +3V, 6-/2-Channel, 12-Bit ADCs

General Description

PIN-PACKAGE

28 QSOP

24 QSOP

Data Logging

Patient Monitoring

Touch Screens

Applications

(LSB)

±0.5

INL

±1

o 12-Bit Resolution, ±0.5 LSB Linearity

o +3V Single-Supply Operation

o Internal +2.5V Reference

o Software-Configurable Analog Input Multiplexer

o Software-Configurable Unipolar/Bipolar

o Low Current

o Internal 3MHz Full-Power Bandwidth Track/Hold

o Parallel 12-Bit Interface

o Small Footprint

Typical Operating Circuits appear at end of data sheet.

Pin Configurations continued at end of data sheet.

Analog Inputs

TOP VIEW

6-Channel Single Ended/

3-Channel Pseudo Differential (MAX1265)

2-Channel Single Ended/

1-Channel Pseudo Differential (MAX1267)

1.9mA (265ksps)

1.0mA (100ksps)

400µA (10ksps)

2µA (Shutdown)

28-Pin QSOP (MAX1265)

24-Pin QSOP (MAX1267)

CLK

INT

MAX1265

QSOP

Pin Configurations

D10

D11

REF

REFADJ

GND

COM

CH0

CH1

CH2

CH3

CH4

CH5

Features

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