Title: High performance signal generation
Application Number: 200510059372 Application Date: 2005.03.29
Publication Number: 1677844 Publication Date: 2005.10.05
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H03D13/00,H03L7/085,G01R31/28
Applicant(s) Name: Teradyne Inc. Address:
Inventor(s) Name:
Attorney & Agent: shou ning zhang huahui
Abstract:
     A high performance phase detector includes a local digital oscillator for generating a digital reference signal of programmable frequency and phase. The phase detector accumulates a difference in phase between the digital reference signal and a sampled input signal to produce a measure of phase error. The phase detector can be advantageously used in a frequency synthesizer to produce signals with low phase noise and accurate phase control. Synthesizers of this type can further be used to as building blocks in ATE systems and other electronic systems for generating low jitter clocks and waveforms.
Time: 15
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