Invention Application
- Patent Title: Method and Circuit for Controlled Gain Reduction of a Differential Pair
- Patent Title (中): 控制增益减小差分对的方法和电路
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Application No.: US14191629Application Date: 2014-02-27
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Publication No.: US20150015331A1Publication Date: 2015-01-15
- Inventor: Frank Kronmueller
- Applicant: Dialog Semiconductor GmbH
- Applicant Address: DE Kirchheim
- Assignee: Dialog Semiconductor GmbH
- Current Assignee: Dialog Semiconductor GmbH
- Current Assignee Address: DE Kirchheim
- Priority: EP13176002.7 20130710
- Main IPC: H03G3/30
- IPC: H03G3/30 ; H03F3/45 ; H03G3/00

Abstract:
The present document relates to multi-stage amplifiers, such as linear regulators or linear voltage regulators (e.g. low-dropout regulators) configured to provide a constant output voltage subject to load transients. A multi-stage amplifier is described, having a differential amplification stage which comprises a differential transistor pair. The differential amplification stage is configured to provide a stage output voltage at a stage output node of the differential transistor pair, based on a first input voltage at a first stage input node and a second input voltage at a second stage input node. The differential transistor pair also comprises a reference node. The differential amplification stage further comprises an active load comprising a first diode transistor coupled to the reference node and a first mirror transistor coupled to the stage output node.
Public/Granted literature
- US09312828B2 Method and circuit for controlled gain reduction of a differential pair Public/Granted day:2016-04-12
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