AD8331 Analog Devices, AD8331 Datasheet - Page 2

• Manufacturer Part Number: AD8331
• Description: Ultralow Noise VGAs with Preamplifier and Programmable RIN
• Manufacturer: Analog Devices

AD8331/AD8332
TABLE OF CONTENTS
AD8331, AD8332—Specifications.................................................. 3
Absolute Maximum Ratings............................................................ 6
AD8331, AD8332—Typical Performance Characteristics .......... 7
Test Circuits..................................................................................... 15
Theory of Operation ...................................................................... 17
Applications..................................................................................... 22
REVISION HISTORY
Revision C
11/03—Data Sheet Changed from REV. B to REV. C
Addition of New Part...........................................................Universal
Changes to Figures ...............................................................Universal
Updated Outline Dimensions..........................................................32
5/03—Data Sheet Changed from REV. A to REV. B
Edits to Ordering Guide....................................................................32
Edits to Ultrasound TGC Application section................................25
Added Figure 71, Figure 72, and Figure 73......................................26
Updated Outline Dimensions............................................................31
2/03—Data Sheet Changed from REV. 0 to REV. A
Edits to Ordering Guide.....................................................................32
REVISION HISTORY.................................................................. 2
ESD CAUTION ............................................................................ 6
Overview...................................................................................... 17
Low Noise Amplifier (LNA)...................................................... 17
Variable Gain Amplifier............................................................. 19
Postamplifier ............................................................................... 21
Rev. C | Page 2 of 32
Pin Configuration and Function Descriptions........................... 30
Outline Dimensions ....................................................................... 32
LNA – External Components ................................................... 22
Driving ADCs ............................................................................. 24
Overload ...................................................................................... 24
Optional Input Overload Protection. ...................................... 25
Layout, Grounding, And Bypassing ......................................... 25
Multiple Input Matching ........................................................... 25
Disabling the LNA...................................................................... 25
Measurement Considerations................................................... 26
Ultrasound TGC Application ................................................... 26
AD8331........................................................................................ 30
AD8332........................................................................................ 31
Ordering Guide .......................................................................... 32