Rainbow-electronics MAX1143 User Manual download pdf

General Description

The MAX1142/MAX1143 are 200ksps, 14-bit ADCs.

These serially interfaced ADCs connect directly to

SPI™, QSPI™, and MICROWIRE™ devices without

external logic. They combine an input scaling network,

internal track/hold, a clock, +4.096V reference, and

three general-purpose digital output pins (for external

multiplexer or PGA control) in a 20-pin SSOP package.

The excellent dynamic performance (SINAD ≥ 81dB),

high-speed (200ksps), and low power (7.5mA) of these

ADCs, make them ideal for applications such as indus-

trial process control, instrumentation, and medical

applications. The MAX1142 accepts input signals of 0

to +12V (unipolar) or ±12V (bipolar), while the

MAX1143 accepts input signals of 0 to +4.096V (unipo-

lar) or ±4.096V (bipolar). Operating from a single

+4.75V to +5.25V analog supply and a +4.75V to

+5.25V digital supply, power-down modes reduce cur-

rent consumption to 1mA at 10ksps and further reduce

supply current to less than 20µA at slower data rates.

A serial strobe output (SSTRB) allows direct connection

to the TMS320-family of digital signal processors. The

MAX1142/MAX1143 user can select either the internal

clock, or an external serial-interface clock for the ADC

to perform analog-to-digital conversions.

The MAX1142/MAX1143 feature internal calibration cir-

cuitry to correct linearity and offset errors. On-demand

calibration allows the user to optimize performance.

Three user-programmable logic outputs are provided

for the control of an 8-channel MUX or a PGA.

Applications

Industrial Process Control

Industrial I/O Modules

Data-Acquisition Systems

Medical Instruments

Portable and Battery-Powered Equipment

Features

♦ 200ksps (Bipolar) and 150ksps (Unipolar)

Sampling ADC

♦ 14-Bits, No Missing Codes

♦ 1LSB INL Guaranteed

♦ 81dB (min) SINAD

♦ +5V Single-Supply Operation

♦ Low Power Operation, 7.5mA (Unipolar Mode)

♦ 2.5µA Shutdown Mode

♦ Software-Configurable Unipolar & Bipolar Input

Ranges

0 to +12V and ±12V (MAX1142)

0 to +4.096V and ±4.096V (MAX1143)

Internal or External Reference

♦ Internal or External Clock

♦ SPI/QSPI/MICROWIRE-Compatible Wire Serial

Interface

♦ Three User-Programmable Logic Outputs

♦ Small 20-Pin SSOP Package

MAX1142/MAX1143

14-Bit ADC, 200ksps, +5V Single-Supply

with Reference

________________________________________________________________

Maxim Integrated Products

TOP VIEW

SHDN

RST

AGND

AIN

CREF

AGND

REFADJ

REF

DIN

DGND

SCLK

SSTRB

DGND

10 DOUT

MAX1142

MAX1143

SSOP

Pin Configuration

19-2037; Rev 0; 5/01

Ordering Information

PART TEMP. RANGE

PIN-

PACKAGE

INL

(LSB)

MAX1142ACAP 0°C to +70°C 20 SSOP ±1

MAX1142BCAP 0°C to +70°C 20 SSOP ±2

Functional Diagram appears at end of data sheet.

Typical Application Circuit appears at end of data sheet.

SPI and QSPI are trademarks of Motorola, Inc.

MICROWIRE is a trademark of National Semiconductor Corp.

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.

1 2 3 4 5 6 ... 19 20

MAX1142/MAX1143 1
SSOP.EPS 20

Summary of Contents

Page 1 - MAX1142/MAX1143

General DescriptionThe MAX1142/MAX1143 are 200ksps, 14-bit ADCs.These serially interfaced ADCs connect directly toSPI™, QSPI™, and MICROWIRE™ devices

Page 2

MAX1142/MAX114314-Bit ADC, 200ksps, +5V Single-Supply with Reference10 _______________________________________________________________________________

Page 3

MAX1142/MAX114314-Bit ADC, 200ksps, +5V Single-Supply with Reference__________________________________________________________________________________

Page 4

MAX1142/MAX114314-Bit ADC, 200ksps, +5V Single-Supply with Reference12 _______________________________________________________________________________

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MAX1142/MAX114314-Bit ADC, 200ksps, +5V Single-Supply with Reference__________________________________________________________________________________

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MAX1142/MAX114314-Bit ADC, 200ksps, +5V Single-Supply with Reference14 _______________________________________________________________________________

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MAX1142/MAX114314-Bit ADC, 200ksps, +5V Single-Supply with Reference__________________________________________________________________________________

Page 8

MAX1142/MAX114314-Bit ADC, 200ksps, +5V Single-Supply with Reference16 _______________________________________________________________________________

Page 9

MAX1142/MAX114314-Bit ADC, 200ksps, +5V Single-Supply with Reference___________________________________________________ 17quately bypassed, add an add

Page 10

Effective Number of BitsEffective number of bits (ENOB) indicates the globalaccuracy of an ADC at a specific input frequency andsampling rate. An idea

Page 11

MAX1142/MAX114314-Bit ADC, 200ksps, +5V Single-Supply with Reference__________________________________________________________________________________

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MAX1142/MAX114314-Bit ADC, 200ksps, +5V Single-Supply with Reference2 ________________________________________________________________________________

Page 13

MAX1142/MAX114314-Bit ADC, 200ksps, +5V Single-Supply with ReferenceMaxim cannot assume responsibility for use of any circuitry other than circuitry e

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MAX1142/MAX114314-Bit ADC, 200ksps, +5V Single-Supply with Reference__________________________________________________________________________________

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MAX1142/MAX114314-Bit ADC, 200ksps, +5V Single-Supply with Reference4 ________________________________________________________________________________

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MAX1142/MAX114314-Bit ADC, 200ksps, +5V Single-Supply with Reference__________________________________________________________________________________

Page 17

MAX1142/MAX114314-Bit ADC, 200ksps, +5V Single-Supply with Reference6 ________________________________________________________________________________

Page 18

MAX1142/MAX114314-Bit ADC, 200ksps, +5V Single-Supply with Reference__________________________________________________________________________________

Page 19

MAX1142/MAX114314-Bit ADC, 200ksps, +5V Single-Supply with Reference8 ________________________________________________________________________________

Page 20 - SSOP.EPS

MAX1142/MAX114314-Bit ADC, 200ksps, +5V Single-Supply with Reference__________________________________________________________________________________

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Rainbow-electronics MAX1143 User Manual

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Summary of Contents

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