Datasheet

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Maxim Integrated │ 2
MAX11901 16-Bit, 1.6Msps, Low-Power,
Fully Differential SAR ADC
TABLE OF CONTENTS
General Description ............................................................................ 1
Applications .................................................................................. 1
Features and Benefits .......................................................................... 1
Application Diagram ............................................................................ 1
16-Bit to 20-Bit SAR ADC Family ................................................................. 1
Absolute Maximum Ratings ...................................................................... 4
Package Thermal Characteristics ................................................................. 4
Electrical Characteristics ........................................................................ 4
Typical Operating Characteristics ................................................................. 8
Pin Configuration ............................................................................. 12
Pin Description ............................................................................... 12
Functional Diagram ........................................................................... 13
Detailed Description........................................................................... 14
Analog Inputs ..............................................................................14
Input Settling ...............................................................................16
Input Filtering ..............................................................................16
Voltage Reference Configurations ..............................................................17
Transfer Function ...........................................................................17
Digital Interface .............................................................................. 19
SPI Timing Diagram .........................................................................20
Register Write . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Register Read ..............................................................................22
Register Map ................................................................................ 23
Mode Register..............................................................................23
Conversion Result Register ...................................................................24
Chip ID Register ............................................................................24
Typical Application Circuit ...................................................................... 24
Single-Ended Unipolar Input to Differential Unipolar Output ..........................................24
Single-Ended Bipolar Input to Differential Unipolar Output ...........................................24
Layout, Grounding, and Bypassing ............................................................... 24
Definitions................................................................................... 27
Integral Nonlinearity.......................................................................27
Differential Nonlinearity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Offset Error .............................................................................27
Gain Error...............................................................................27
Signal-to-Noise Ratio......................................................................27
Signal-to-Noise Plus Distortion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27