ada4950-1 Analog Devices, Inc., ada4950-1 Datasheet - Page 2

• Manufacturer Part Number: ada4950-1
• Description: Low Power, Selectable Gain Differential Adc Driver, G = 1, 2, 3
• Manufacturer: Analog Devices, Inc.

ADA4950-1/ADA4950-2
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 ..................................................................................... 16
Terminology .................................................................................... 17
REVISION HISTORY
5/09—Revision 0: Initial Version
±5 V Operation ............................................................................. 3
5 V Operation ............................................................................... 5
Thermal Resistance ...................................................................... 7
Maximum Power Dissipation ..................................................... 7
ESD Caution .................................................................................. 7
Rev. 0 | Page 2 of 28
Theory of Operation ...................................................................... 18
Applications Information .............................................................. 19
Layout, Grounding, and Bypassing .............................................. 23
High Performance ADC Driving ................................................. 24
Outline Dimensions ....................................................................... 25
Analyzing an Application Circuit ............................................ 19
Selecting the Closed-Loop Gain ............................................... 19
Estimating the Output Noise Voltage ...................................... 19
Calculating the Input Impedance for an Application Circuit
....................................................................................................... 20
Input Common-Mode Voltage Range ..................................... 22
Input and Output Capacitive AC Coupling ............................ 22
Input Signal Swing Considerations .......................................... 22
Setting the Output Common-Mode Voltage .......................... 22
Ordering Guide .......................................................................... 25