OPA604 High Performance and Small Power Audio Amplifier Circuit

Published:2011/6/24 13:21:00 Author:Michel | Keyword: High Performance, Small Power, Audio, Amplifier Circuit | From:SeekIC

The above picture is high performance and small power audio power amplifier circuit.This circuit's former level uses the mosfet hi-fi op-amp OPA604 and next level adopts high-speed buffer BUF634 and voltage series negative feedback is used between two levels amplifiers. This circuit voltage magnification depends on two resistances (5kΩ and 250Ω)of feedback branchs and its value is l+5kΩ／250Ω≈21 times.BUF634 is high-speed buffers and itsinternal structure simplified circuit is shown in figure (b).



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Basic_Circuit/OPA604_High_Performance_and_Small_Power_Audio_Amplifier_Circuit.html

Print this Page | Comments | Reading(3)