Invention Grant
- Patent Title: Temperature-independent oscillators and delay elements
- Patent Title (中): 温度独立振荡器和延迟元件
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Application No.: US13527908Application Date: 2012-06-20
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Publication No.: US08742815B2Publication Date: 2014-06-03
- Inventor: Sameer Wadhwa , Marzio Pedrali-Noy
- Applicant: Sameer Wadhwa , Marzio Pedrali-Noy
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent Kenyon S. Jenckes
- Main IPC: H03H11/26
- IPC: H03H11/26

Abstract:
Temperature-independent delay elements and oscillators are disclosed. In one design, an apparatus includes at least one delay element, a bias circuit, and a current source. The delay element(s) receive a charging current from the current source and provide a delay that is dependent on the charging current. Each delay element may be a current-starved delay element. The delay element(s) may be coupled in series to implement a delay line or in a loop to implement an oscillator. The bias circuit controls generation of the charging current based on a function of at least one parameter (e.g., a switching threshold voltage) of the at least one delay element in order to reduce variations in delay with temperature. The current source provides the charging current for the delay element(s) and is controlled by the bias circuit.
Public/Granted literature
- US20130342256A1 TEMPERATURE-INDEPENDENT OSCILLATORS AND DELAY ELEMENTS Public/Granted day:2013-12-26
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