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AUDIO AMP + 3KHz FILTER
This circuit is the audio amp section for a complete optical transmitter.
The circuit amplifies and filters the voice audio signals from an electret microphone.
The circuit is described in more detail in the receiver section of Dave Johnson's
Handbook of Optical Through the Air Communications.
Links to electronic circuits,
electronic schematics, designs for engineers, hobbyists, students & inventors:
AN-106: A Collection of Amp Applications - AN-106 Analog Devices App Notes
(app note added 2/06) Examines Some of Numerous and Widely Used Applications of
Operational Amplifier
AN-345: Grounding for Low-and-High-Frequency Circuits - AN-345 Analog Devices
Application Notes (app note added 2/06) Know Your Ground and Signal Paths for
Effective Designs. Current Flow Seeks Path of Least Impedance-Not Just Resistance....
AN-347: Shielding and Guarding - AN-347 Analog Devices Application Notes
(app note added 2/06) How to Exclude Interference-Type Noise. What to do and Why to do
it-A Rational Approach
AN-349: Keys to Longer Life for CMOS - AN-349 Analog Devices Application Notes
(app note added 09/08) Here's How CMOS Can be Protected Against Abuse
AN-583: Using the SSM2167 Evaluation Board - AN-583 Analog Devices Application
Notes (app note added 2/06) This document explains how evaluation board is
set up and how to use it to evaluate SSM-2167.
