ada4939-1 Analog Devices, Inc., ada4939-1 Datasheet - Page 2

• Manufacturer Part Number: ada4939-1
• Description: Ultralow Distortion Differential Adc Driver
• Manufacturer: Analog Devices, Inc.

ADA4939-1/ADA4939-2
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
General Description ......................................................................... 1
Functional Block Diagrams............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 7
Pin Configurations and Function Descriptions ........................... 8
Typical Performance Characteristics ............................................. 9
Test Circuits..................................................................................... 15
Operational Description................................................................ 16
REVISION HISTORY
5/08—Revision 0: Initial Version
5 V Operation ............................................................................... 3
3.3 V Operation ............................................................................ 5
Thermal Resistance ...................................................................... 7
Maximum Power Dissipation ..................................................... 7
ESD Caution.................................................................................. 7
Definition of Terms.................................................................... 16
Rev. 0 | Page 2 of 24
Theory of Operation ...................................................................... 17
Layout, Grounding, and Bypassing.............................................. 22
High Performance ADC Driving ................................................. 23
Outline Dimensions ....................................................................... 24
Analyzing an Application Circuit ............................................ 17
Setting the Closed-Loop Gain .................................................. 17
Stable for Gains ≥2 ..................................................................... 17
Estimating the Output Noise Voltage ...................................... 17
Impact of Mismatches in the Feedback Networks................. 18
Calculating the Input Impedance for an Application Circuit
....................................................................................................... 19
Input Common-Mode Voltage Range ..................................... 21
Input and Output Capacitive AC-Coupling ........................... 21
Minimum R
Setting the Output Common-Mode Voltage .......................... 21
Ordering Guide .......................................................................... 24
G
Value of 50 Ω ...................................................... 21