Invention Grant
US08120424B2 Class AB output stages and amplifiers including class AB output stages
有权
AB类输出级和放大器，包括AB类输出级
- Patent Title: Class AB output stages and amplifiers including class AB output stages
- Patent Title (中): AB类输出级和放大器，包括AB类输出级
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Application No.: US12954169Application Date: 2010-11-24
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Publication No.: US08120424B2Publication Date: 2012-02-21
- Inventor: Gwilym Francis Luff
- Applicant: Gwilym Francis Luff
- Applicant Address: US CA Milpitas
- Assignee: Intersil Americas Inc.
- Current Assignee: Intersil Americas Inc.
- Current Assignee Address: US CA Milpitas
- Agency: Fliesler Meyer LLP
- Main IPC: H03F3/45
- IPC: H03F3/45
Abstract:
A buffer stage includes a flipped voltage follower and an emitter follower. The flipped voltage follower is connected between a high voltage rail and a low voltage rail and include an input and an output. The emitter follower is also connected between the high voltage rail and the low voltage rail and includes an input and an output. A resistor connects the output of the flipped voltage follower to the output of the emitter follower. The input of the flipped voltage follower and the input of the emitter follower are connected together and provide an input of the buffer stage. The output of the emitter follower provides an output of the buffer stage. A differential buffer stage can be implemented using a pair of such buffer stages. Such a differential buffer stage can provide the output stage for a fully differential operational amplifier.
Public/Granted literature
- US20110304393A1 CLASS AB OUTPUT STAGES AND AMPLIFIERS INCLUDING CLASS AB OUTPUT STAGES Public/Granted day:2011-12-15
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