Invention Grant
- Patent Title: Highly accurate temperature stable clock based on differential frequency discrimination of oscillators
- Patent Title (中): 基于差分频率鉴别振荡器的高精度温度稳定时钟
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Application No.: US13068117Application Date: 2011-05-03
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Publication No.: US08686806B2Publication Date: 2014-04-01
- Inventor: Emmanuel P. Quevy , Manu Seth
- Applicant: Emmanuel P. Quevy , Manu Seth
- Applicant Address: US TX Austin
- Assignee: Silicon Laboratories Inc.
- Current Assignee: Silicon Laboratories Inc.
- Current Assignee Address: US TX Austin
- Agency: Abel Law Group, LLP
- Main IPC: H03B5/32
- IPC: H03B5/32
Abstract:
An apparatus and a method for compensating for a mismatch in temperature coefficients of two oscillator frequencies to match a desired frequency ratio between the two oscillator frequencies over a temperature range. In one embodiment of a temperature sensor, first and second oscillators of different temperature characteristics are coupled to a differential frequency discriminator (DFD) circuit. The DFD circuit compensates for the different characteristics in order to match a frequency difference between the first and second frequencies over a temperature range.
Public/Granted literature
- US20110210797A1 Highly accurate temperature stable clock based on differential frequency discrimination of oscillators Public/Granted day:2011-09-01
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