ssm2167 Analog Devices, Inc., ssm2167 Datasheet - Page 2

• Manufacturer Part Number: ssm2167
• Description: Low Voltage Microphone Preamplifier With Variable Compression And Noise Gating
• Manufacturer: Analog Devices, Inc.

SSM2167
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
General Description ......................................................................... 1
Pin Configuration ............................................................................. 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 4
Typical Performance Characteristics ............................................. 5
Applications Information ................................................................ 8
REVISION HISTORY
11/07—Rev. B to Rev. C
Updated Format .................................................................. Universal
Changes to PSRR .............................................................................. 3
Updated Outline Dimensions ....................................................... 11
Changes to Ordering Guide .......................................................... 11
9/03—Rev. A to Rev. B
Deleted SSM2167-2 Model ................................................ Universal
Changes to Ordering Guide ............................................................ 3
Edits to Figure 2 and Figure 3 ......................................................... 6
Updated Outline Dimensions ......................................................... 9
Thermal Resistance ...................................................................... 4
ESD Caution .................................................................................. 4
Theory of Operation .................................................................... 8
Rev. C | Page 2 of 12
Outline Dimensions ....................................................................... 11
3/02—Rev. 0 to Rev. A
Edits to Specifications ....................................................................... 2
Edits to Figure 2 and Figure 3 .......................................................... 6
7/01—Revision 0: Initial Version
Signal Path ......................................................................................8
Level Detector ................................................................................9
Control Circuitry ...........................................................................9
Setting the Compression Ratio ....................................................9
Setting the Noise Gate Threshold
(Downward Expansion) ............................................................ 10
Rotation Point (Limiting) .......................................................... 10
Shutdown Feature ....................................................................... 10
PCB Layout Considerations ...................................................... 10
Ordering Guide .......................................................................... 11