Abstract: An integrated circuit package is disclosed having a semiconductor chip, a device supported by the semiconductor chip, and a molding compound sealing the semiconductor chip and the device together as a composite package. A method of manufacturing the package is also disclosed.
Abstract: A programmable crystal oscillator is provided having a memory for storing frequency-defining parameters. Typically, one of these parameters is used to program an adjustable capacitive load circuit coupled to a crystal to thereby adjust the crystal source frequency. Additional parameters are used to program the output frequency of a phase locked loop circuit coupled to receive the adjusted source frequency. A further parameter can also be used to divide the output frequency of the phase locked loop circuit to supply a specified output frequency. The oscillators can be manufactured as generic programmable crystal oscillators without regard for output frequency and then quickly programmed to produce customer-specified output frequencies with a high degree of accuracy.
Type:
Grant
Filed:
February 19, 2003
Date of Patent:
October 11, 2005
Assignees:
Fox Electronics, Inc., Jet City Electronics
Inventors:
John W. Fallisgaard, Eugene S. Trefethan