Post Amplifier and Amplitude Detector Circuit for Magnetic Recording Channels
Original Publication Date: 1989-Jan-01
Included in the Prior Art Database: 2005-Jan-27
A circuit is described for signal amplification and generation of the control signal for automatic gain control (AGC) for magnetic recording channels. The novel concepts underlying these circuits are intimately related to the design in CMOS technology and to the full integration of the circuit. There are no external components such as capacitors or adjustable resistors. Recording channels based on this design approach will be more reliable and much less expensive to manufacture than circuits presently implemented in products which contain many discrete components. (Image Omitted) To make circuits robust, they must be designed such that their behavior does not depend strongly on electrical parameters of the individual components.