MAX11040K Maxim Integrated Products, MAX11040K Datasheet

MAX11040K

Manufacturer Part Number

MAX11040K

Description

(MAX11040K / MAX11060) Sigma-Delta ADCs

Manufacturer

Maxim Integrated Products

Datasheet

1.MAX11040K.pdf (35 pages)

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The MAX11040K/MAX11060 are 24-/16-bit, 4-channel,

simultaneous-sampling, sigma-delta analog-to-digital

converters (ADCs). The devices allow simultaneous

sampling of as many as 32 channels using a built-in

cascade feature to synchronize as many as eight

devices. The serial interface of the devices allows read-

ing data from all the cascaded devices using a single

command. Four modulators simultaneously convert

each fully differential analog input with a programmable

data output rate ranging from 0.25ksps to 64ksps. The

devices achieve 106dB SNR at 16ksps and 117dB SNR

at 1ksps (MAX11040K). The devices operate from a

single +3V supply. The differential analog input range is

±2.2V when using the internal reference; an external

reference is optional. Each input is overvoltage protect-

ed up to ±6V without damage. The devices use an

internal crystal oscillator or an external source for clock.

The devices are compatible with SPI™, QSPI™,

MICROWIRE™, and DSP-compatible 4-wire serial inter-

faces. An on-board interface logic allows one serial inter-

face (with a single chip select) to control up to eight

cascaded devices or 32 simultaneous sampling analog

input channels.

The devices are ideally suited for power-management

systems. Each channel includes an adjustable sam-

pling phase enabling internal compensation for phase

shift due to external dividers, transformers, or filters at

the inputs. The output data rate is adjustable with a

0.065% resolution (at 16ksps or below) to track the

varying frequency of a periodic input. A SYNC input

allows periodic alignment of the conversion timing of

multiple devices with a remote timing source.

The devices are available in a 38-pin TSSOP package speci-

fied over the -40°C to +105°C industrial temperature range.

19-5741; Rev 2; 11/11

+ Denotes a lead(Pb)-free/RoHS-compliant package.

MICROWIRE is a trademark of National Semiconductor Corp.

SPI/QSPI are trademarks of Motorola, Inc.

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

MAX11040KGUU+

MAX11060GUU+

Power-Protection Relay Equipment

Multiphase Power Systems

Industrial Data-Acquisition Systems

Medical Instrumentation

PART

24-/16-Bit, 4-Channel, Simultaneous-Sampling,

________________________________________________________________ Maxim Integrated Products

-40°C to +105°C

Ordering Information

TEMP RANGE

General Description

Applications

PIN-PACKAGE

38 TSSOP

Cascadable, Sigma-Delta ADCs

o Four Fully Differential Simultaneously Sampled

o Cascadable for Up to 32 Channels of

o 106dB (MAX11040K) SNR at 16ksps

o 117dB (MAX11040K) SNR at 1ksps

o 0.25% Error Over a 1000:1 Dynamic Range,

o ±2.2V Full-Scale Input Range

o ±6V Overvoltage Protected Inputs

o Internal Crystal Oscillator

o 2.5V, 50ppm/°C Internal Reference or External

o Programmable Output Data Rate

o Programmable Sampling Phase

o SPI-/QSPI-/MICROWIRE-/DSP-Compatible 4-Wire

o Cascadable Interface Allows Control of Up to

o 3.0V to 3.6V Analog Supply Voltage

o 2.7V to V

o 38-Pin TSSOP Package

AIN0+

AIN1+

AIN2+

AIN3+

REFIO

AIN0-

AIN1-

AIN2-

AIN3-

REF0

REF1

REF2

REF3

Channels

Simultaneous Sampling

Processed Over 16.7ms (MAX11040K)

Reference

Serial Interface

Eight Devices with a Single CS Signal

0.25ksps to 64ksps Range

0.065% Resolution

0 to 333µs Delay in 1.33µs Steps

AGND

AVDD

24-/16-BIT

Digital Supply Voltage

ADC

REFERENCE

2.5V

Functional Diagram

DIGITAL

FILTER

OSCILLATOR

XIN

CRYSTAL

REGISTERS AND

XOUT

CONTROL

DIGITAL

CLKOUT

MAX11040K

MAX11060

OVRFLW

INTERFACE

Features

SERIAL

DGND

FAULT

SYNC

DRDYIN

DRDYOUT

CASCIN

CASCOUT

SCLK

DIN

DOUT

Datasheet pdf - http://www.DataSheet4U.net/

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