MAX1270ACAI Maxim, MAX1270ACAI Datasheet

MAX1270ACAI

Manufacturer Part Number

MAX1270ACAI

Description

Multirange / +5V / 8-Channel / Serial 12-Bit ADCs

Manufacturer

Maxim

Datasheets

1.MAX1270ACAI.pdf (20 pages)

2.MAX1270ACAI.pdf (20 pages)

3.MAX1270ACAI.pdf (20 pages)

4.MAX1270ACAI.pdf (20 pages)

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Company:

Meier Automation Equipment Co., Limited

Part Number:

MAX1270ACAI

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MAXIM/美信

Quantity:

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Company:

Meier Automation Equipment Co., Limited

Part Number:

MAX1270ACAI+

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Quantity:

20 000

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Download datasheet (809Kb)

The MAX1270/MAX1271 are multirange, 12-bit data-

acquisition systems (DAS) that require only a single

+5V supply for operation, yet accept signals at their

analog inputs that can span above the power-supply

rail and below ground. These systems provide eight

analog input channels that are independently software

programmable for a variety of ranges: ±10V, ±5V, 0 to

+10V, 0 to +5V for the MAX1270; ±V

ing increases the effective dynamic range to 14 bits and

provides the flexibility to interface 4–20mA, ±12V, and

±15V powered sensors directly to a single +5V system.

In addition, these converters are fault protected to

±16.5V; a fault condition on any channel will not affect

the conversion result of the selected channel. Other fea-

tures include a 5MHz bandwidth track/hold, software-

selectable internal/external clock, 110ksps throughput

rate, and internal 4.096V or external reference operation.

The MAX1270/MAX1271 serial interface directly

connects to SPI™/QSPI™ and MICROWIRE™ devices

without external logic.

A hardware shutdown input (SHDN) and two software-

programmable power-down modes, standby (STBYPD)

or full power-down (FULLPD), are provided for low-cur-

rent shutdown between conversions. In standby mode,

the reference buffer remains active, eliminating startup

delays.

The MAX1270/MAX1271 are available in 24-pin narrow

PDIP or space-saving 28-pin SSOP packages.

19-4782; Rev 2; 9/04

Ordering Information continued at end of data sheet.

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.

MAX1270ACNG

MAX1270BCNG

MAX1270ACAI

MAX1270BCAI

REF

Industrial Control Systems

Data-Acquisition Systems

Battery-Powered

Instruments

, 0 to V

PART

REF

/2 for the MAX1271. This range switch-

________________________________________________________________ Maxim Integrated Products

TEMP RANGE PIN-PACKAGE

0°C to +70°C

Ordering Information

General Description

Automatic Testing

Robotics

Medical Instruments

24 Narrow PDIP

28 SSOP

Applications

REF

, ±V

REF

/2, 0 to

(LSB)

Multirange, +5V, 8-Channel,

±0.5

INL

±1

♦ 12-Bit Resolution, 0.5 LSB Linearity

♦ +5V Single-Supply Operation

♦ SPI/QSPI and MICROWIRE-Compatible

♦ Four Software-Selectable Input Ranges

♦ Eight Analog Input Channels

♦ 110ksps Sampling Rate

♦ ±16.5V Overvoltage-Tolerant Input Multiplexer

♦ Internal 4.096V or External Reference

♦ Two Power-Down Modes

♦ Internal or External Clock

♦ 24-Pin Narrow PDIP or 28-Pin SSOP Packages

Pin Configurations appear at end of data sheet.

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

4.7µF

3-Wire Interface

MAX1270: 0 to +10V, 0 to +5V, ±10V, ±5V

MAX1271: 0 to V

±V

ANALOG

INPUTS

REF

Serial 12-Bit ADCs

0.01µF

Typical Operating Circuit

CH0

CH1

CH2

CH3

CH4

CH5

CH6

CH7

REF

REFADJ

REF

0.1µF

DGND

, 0 to V

MAX1270

MAX1271

AGND

REF

SSTRB

+5V

DOUT

SHDN

SCLK

DIN

/2, ±V

Features

REF

MC68HCXX

I/O

SCK

MOSI

MISO

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