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MAS9280 Datasheet(PDF) 1 Page - Micro Analog systems |
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MAS9280 Datasheet(HTML) 1 Page - Micro Analog systems |
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1 / 8 page  DA9280.003 13 July 2006 1 (8) MAS9280 IC FOR 18.00 – 40.00 MHz VCTCXO • Min. Supply Voltage 2.4 V • Max. Frequency 40 MHz • True Sine Wave Output • Frequency Stability +/- 1.5 ppm • Suitable Also for Low Pull Crystals • Very Low Phase Noise DESCRIPTION The MAS9280 is an integrated circuit well suited to build VCTCXO for mobile communication. Temperature calibration is achieved in three calibration temperatures only. The trimming is done through a serial bus and the calibration information is stored in an internal PROM. This means no rework for trimming is needed. To build a VCTCXO additionally only a crystal is required. The compensation method is fully analog, working continuously without generating any steps or other interference. Divider function allows the usage of double frequency crystal. FEATURES APPLICATIONS • Very small size • Minimum Vdd 2.4V • No voltage reference capacitor needed • Phase noise <-110 dBc/Hz at 100 Hz and <-130 dBc/Hz at 1kHz @ 32 MHz crystal • Programmable VC-sensitivity • Oscillator frequency output fo /2 versions available • VCTCXO for mobile phones • VCTCXO for other telecommunications systems BLOCK DIAGRAM T Vref TMux Σ DA CLK PV VSS VC VDD 4 4 f(T) f(T) 4 8 CUB INF SENS LIN 8 CDAC1 CDAC2 TE1 TE2 X2 OUT X1 2 MAS9280 This is preliminary information on a new product under development. Micro Analog Systems Oy reserves the right to make any changes without notice. |
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