MAX187AEWE Maxim Integrated Products, MAX187AEWE Datasheet

MAX187AEWE

Manufacturer Part Number

MAX187AEWE

Description

SOP-16

Manufacturer

Maxim Integrated Products

Datasheets

1.MAX187AEWE.pdf (20 pages)

2.MAX187ACPA.pdf (20 pages)

Specifications of MAX187AEWE

Date_code

05+

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Download datasheet (179Kb)

The MAX187/MAX189 serial 12-bit analog-to-digital

converters (ADCs) operate from a single +5V supply

and accept a 0V to 5V analog input. Both parts feature

an 8.5µs successive-approximation ADC, a fast

track/hold (1.5µs), an on-chip clock, and a high-speed

3-wire serial interface.

The MAX187/MAX189 digitize signals at a 75ksps

throughput rate. An external clock accesses data from

the interface, which communicates without external

hardware to most digital signal processors and micro-

controllers. The interface is compatible with SPI™,

QSPI™, and Microwire™.

The MAX187 has an on-chip buffered reference, and

the MAX189 requires an external reference. Both the

MAX187 and MAX189 save space with 8-pin DIP and

16-pin SO packages. Power consumption is 7.5mW

and reduces to only 10µW in shutdown.

Excellent AC characteristics and very low power con-

sumption combined with ease of use and small pack-

age size make these converters ideal for remote DSP

and sensor applications, or for circuits where power

consumption and space are crucial.

19-0196; Rev 0; 10/93

™ SPI and QSPI are trademarks of Motorola. Microwire is a trademark of National Semiconductor.

__________________General Description

________________Functional Diagram

Call toll free 1-800-998-8800 for free samples or literature.

GND

___________________________Applications

V DD

REF

AIN

NOTE: PIN NUMBERS SHOWN ARE FOR 8-PIN DIPs ONLY.

(MAX187 ONLY)

Portable Data Logging

Remote Digital Signal Processing

Isolated Data Acquisition

High-Accuracy Process Control

BANDGAP

REFERENCE

T/H

+2.5V

MAX187

MAX189

10k

________________________________________________________________ Maxim Integrated Products

AV = 1.638

BUFFER ENABLE/DISABLE

(4.096V)

+5V, Low-Power, 12-Bit Serial ADCs

REF-

REF+

COMPARATOR

DAC

CONTROL

OUTPUT

TIMING

SHIFT

12-BIT

AND

SAR

DOUT

SCLK

SHDN

_________________Ordering Information

________________________________Features

Ordering Information continued on last page.

* Dice are specified at T

** Contact factory for availability and processing to MIL-STD-883.

_________________Pin Configurations

MAX187ACPA

MAX187BCPA

MAX187CCPA

MAX187ACWE

MAX187BCWE

MAX187CCWE

MAX187BC/D

12-Bit Resolution

Internal Track/Hold, 75kHz Sampling Rate

Single +5V Operation

Low Power: 2µA Shutdown Current

Internal 4.096V Buffered Reference (MAX187)

3-Wire Serial Interface, Compatible with SPI,

QSPI, and Microwire

Small-Footprint 8-Pin DIP and 16-Pin SO

TOP VIEW

⁄

PART

LSB Integral Nonlinearity (MAX187A/MAX189A)

Pin Configurations continued on last page.

SHDN

REF

AIN

1.5mA Operating Current

TEMP. RANGE PIN-PACKAGE ERROR

0°C to +70°C

= +25°C, DC parameters only.

MAX187

MAX189

DIP

8 Plastic DIP

16 Wide SO

Dice*

SCLK

DOUT

GND

(LSB)

±1

±2

±1

±2

±1

⁄

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