com DA9285.
004 13 July 2006 IC FOR XO TRIMMING • • • • • • DESCRIPTION MAS9285 is capacitive digital to analog converter integrated circuit well suited to make initial offset trimming of the crystal oscillator.
The trimming is done by a serial bus and the calibration information is stored in an internal PROM.
MAS9285 Very Low Power Wide Trimming Range Wide Supply Voltage Range Very High Level of Integration Electrically Trimmable Low Cost FEATURES • • • Very small size Minimum current draw Wide operating temperature range APPLICATIONS • • OCXO All Crystal Oscillators BLOCK DIAGRAM MAS9285 DA CLK PV VDD Digital 2 3 5 VSS X1 Figure 1.
Block diagram of MAS9285.
1 (...

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