- Patent Title: Single to differential conversion in silicon microphone amplifiers
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Application No.: US17658716Application Date: 2022-04-11
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Publication No.: US11943592B2Publication Date: 2024-03-26
- Inventor: Jose Luis Ceballos , Hong Chen , Fulvio CiCiotti , Andreas Wiesbauer
- Applicant: Infineon Technologies AG
- Applicant Address: DE Neubiberg
- Assignee: INFINEON TECHNOLOGIES AG
- Current Assignee: INFINEON TECHNOLOGIES AG
- Current Assignee Address: DE Neubiberg
- Agency: Slater Matsil, LLP
- Main IPC: H04R3/02
- IPC: H04R3/02 ; H03F3/45 ; H04R19/04 ; H04R29/00

Abstract:
A single-ended to differential converter includes a converter input, a first converter output, a second converter output, and an internal node, wherein the first converter output and the second converter output comprise a differential output; a non-inverting amplifier having an input coupled to the converter input, and an output coupled to the first converter output; an inverting amplifier having an input coupled to the first converter output, and an output coupled to the second converter output; a charge pump having a charge pump output capacitor coupled between the second converter output and the internal node; and a feedback capacitor coupled between the first converter output and the internal node.
Public/Granted literature
- US20230328433A1 SINGLE TO DIFFERENTIAL CONVERSION IN SILICON MICROPHONE AMPLIFIERS Public/Granted day:2023-10-12
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