Datasheet

MAX11270 24-Bit, 10mW, 130dB SNR, 64ksps Delta-Sigma

ADC with Integrated PGA

www.maximintegrated.com

Maxim Integrated

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TABLE OF CONTENTS

General Description ............................................................................ 1

Applications .................................................................................. 1

Features and Benefits .......................................................................... 1

Typical Application Circuit ....................................................................... 1

Absolute Maximum Ratings ...................................................................... 6

Package Thermal Characteristics ................................................................. 6

Electrical Characteristics ........................................................................ 6

Typical Operating Characteristics ................................................................ 10

Pin Configuration ............................................................................. 13

Pin Description ............................................................................... 13

Functional Diagram ........................................................................... 15

Detailed Description........................................................................... 16

System Clock ..............................................................................16

Voltage Reference Inputs .....................................................................16

Analog Inputs ..............................................................................16

Input Buffers.............................................................................16

Bypass/Direct Connect ....................................................................16

Programmable Gain Amplifier (PGA) ............................................................16

Input Voltage Range .........................................................................17

Noise Performance vs. Data Rate ..............................................................17

Power-On Reset ............................................................................22

Power-Down Modes .........................................................................22

Digital Filters ...............................................................................24

SINC Filter.................................................................................24

Serial Interface .............................................................................24

Chip Select (CSB) ........................................................................24

SCLK (Serial Clock) .......................................................................24

DIN (Serial Data Input).....................................................................24

DOUT (Serial Data Output) .................................................................25

Data Ready (RDYB).......................................................................25

SPI Incomplete Write Command Termination ...................................................25

SPI Incomplete Read Command Termination ...................................................26

SPI Timing Characteristics .................................................................26

Modes and Registers ........................................................................29

Conversion Mode (MODE = 0) .................................................................29