Invention Grant
- Patent Title: High-input common-mode differential amplifiers
- Patent Title (中): 高输入共模差分放大器
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Application No.: US14581682Application Date: 2014-12-23
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Publication No.: US09337776B1Publication Date: 2016-05-10
- Inventor: Feng Pan , Ramin Ghodsi
- Applicant: Micron Technology, Inc.
- Applicant Address: US ID Boise
- Assignee: Micron Technology, Inc.
- Current Assignee: Micron Technology, Inc.
- Current Assignee Address: US ID Boise
- Agency: Schwegman Lundberg & Woessner, P.A.
- Main IPC: G11C5/14
- IPC: G11C5/14 ; H03F1/02 ; H03F3/45

Abstract:
The present invention discloses a level-shifting circuit to provide an initial stage to a differential amplifier circuit, a differential amplifier circuit, and a method of operating same. An example level-shifting circuit includes a first transistor and a second transistor to receive a first differential amplifier input. The first transistor has a drain receiving a power input, and the second transistor has a drain coupled to a source of the first transistor and a source coupled to a biased tail circuit. The example level-shifting circuit further includes a third transistor and a fourth transistor to receive a second differential amplifier input. The third transistor has a drain receiving a power input and the fourth transistor has a drain coupled to a source of the third transistor and a source coupled to the biased tail circuit. Other examples, methods, and apparatuses are described herein.
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