Invention Grant
- Patent Title: Digital switched attenuator
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Application No.: US16521644Application Date: 2019-07-25
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Publication No.: US10651816B2Publication Date: 2020-05-12
- Inventor: Adrian John Bergsma
- Applicant: SKYWORKS SOLUTIONS, INC.
- Applicant Address: US MA Woburn
- Assignee: SKYWORKS SOLUTIONS, INC.
- Current Assignee: SKYWORKS SOLUTIONS, INC.
- Current Assignee Address: US MA Woburn
- Agency: Lando & Anastasi, LLP
- Main IPC: H03H7/25
- IPC: H03H7/25 ; H03H7/07

Abstract:
An attenuation cell is provided for use in a switched attenuator. The attenuation cell includes an attenuation path that has an input, a first switch, a resistive network, a second switch, and an output. The resistive network provides a desired attenuation from the input to the output. The attenuation cell also includes a bypass path in parallel with the attenuation path with a bypass switch between the input and the output. The attenuation cell also has a shunt switch coupled between the resistive network and a reference node to selectively connect the resistive network to the reference node.
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