Invention Grant
US08258839B2 1 to 2N-1 fractional divider circuit with fine fractional resolution
有权
1〜2N-1分数分辨率电路，分辨率精细
- Patent Title: 1 to 2N-1 fractional divider circuit with fine fractional resolution
- Patent Title (中): 1〜2N-1分数分辨率电路，分辨率精细
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Application No.: US12905594Application Date: 2010-10-15
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Publication No.: US08258839B2Publication Date: 2012-09-04
- Inventor: Mustafa U. Erdogan
- Applicant: Mustafa U. Erdogan
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent John J. Patti; Wade J. Brady, III; Frederick J. Telecky, Jr.
- Main IPC: H03L7/06
- IPC: H03L7/06
Abstract:
A fractional divider has been provided that allows for division ratios of 1:1 to 1:2N-1 with fine fractional resolution. To accomplish this, a phase blender (which is under the control of a state machine) is used to “blend” or interpolate consecutive phases of a clock signal from a delay locked loop to achieve a low deterministic jitter, while a sigma delta modulator can also be used to maintain low deterministic jitter while achieving the desired frequency resolution.
Public/Granted literature
- US20120092051A1 1 TO 2N-1 FRACTIONAL DIVIDER CIRCUIT WITH FINE FRACTIONAL RESOLUTION Public/Granted day:2012-04-19
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