MAS6282

www.DataSheet4U.com DA6282.001 9 January 2007 This is preliminary information on a new product under development. Micro Analog Systems Oy reserves the right to make any changes without notice. IC FOR 6.50 – 40.00 MHz VCTCXO Min. Supply Voltage 2.6 V Max. Frequency 40 MHz True Sine Wave Output Frequency Stability ±2.0 ppm Suitable for Ultra Small VCTCXO Very Low Phase Noise MAS6282 DESCRIPTION The MAS6282 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 only a crystal is required in addition to MAS6282. The compensation method is fully analog, working continuously without generating any steps or other interference. Output is true sine wave resulting in lower harmonics than with clipped sine wave output. FEATURES Very small size Minimum Vdd 2.6V No voltage reference capacitor needed Programmable VC-sensitivity Divider option selectable by a PROM bit Output peak voltage (amplitude) option selectable by a PROM bit APPLICATIONS VCTCXO for mobile phones VCTCXO for other applications BLOCK DIAGRAM DA TFRPROM TEST(2:0) INF(4:0) LIN(7:0) CUB(3:0) SCALE(4:0) SENS(2:0) CDACF(5:0) CDACC(3:0) DIV(0:0) AMPL(0:0) POLYNOMIAL Thermal sensor VREF TEST MUX TIN MOUT CLK f(T) = Ax3+Bx+C OU...