发明授权
US07304538B2 Accurate quiescent current control scheme in floating controlled class AB amplifier 有权
浮动控制AB类放大器中的精确静态电流控制方案

Accurate quiescent current control scheme in floating controlled class AB amplifier
摘要:
Provided is an amplifier including a system for controlling output stage quiescent current. The amplifier includes a driving stage including first pmos and nmos transistors coupled together, and an output stage connected to the driving stage. The output stage includes second pmos and nmos transistors coupled together. The amplifier also includes a quiescent control stage connected to the driving stage and including third pmos and nmos transistors coupled together, fourth pmos coupled to third pmos and 4th nmos coupled to 3rd nmos. A topology of the coupled third pmos and nmos transistors substantially matches a topology of the coupled first pmos and nmos transistors, and 4th pmos and nmos match to 2nd pmos and nmos.
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