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| DA9271.005 13 July 2006 MAS9271 IC FOR 10.00 - 40.00 MHz PXO * * * * * * * DESCRIPTION The MAS9271 is an integrated circuit well suited to make initial offset trimming of the crystal in oscillator. The trimming is done by a serial bus and the calibration information is stored in an internal PROM. To build a Precision Crystal Oscillator (PXO) only one additional component, a crystal is needed. Low Power Wide Supply Voltage Range CMOS (Square Wave) Output Very High Level of Integration Electrically Trimmable Very Low Phase Noise Low Cost FEATURES * * * * * Very small size Minimum current draw Wide operating temperature range Phase noise <-130 dBc/Hz at 1 kHz offset Square wave output APPLICATIONS * * * PXO for data terminals PXO for telecommunication applications PXO for computer application BLOCK DIAGRAM PD MAS9271 OUT DA CLK PV VDD Digital 3 5 VSS X1 X'Tal X2 1 (5) DA9271.005 13 July 2006 PIN DESCRIPTION Pin Description Power Supply Voltage Crystal Oscillator Output Crystal/Varactor Oscillator Input Tri State Serial Bus Clock Input Serial Bus Data Input Buffer Output Power Supply Ground Programming Input Symbol VDD X1 X2 PD CLK DA OUT VSS PV x-coordinate 177 374 817 1012 201 435 665 830 1042 y-coordinate 172 158 158 158 1015 1015 1015 1008 1015 Note Note: Also available in AK2140 pin order. Note: Because the substrate of the die is internally connected to VDD, the die has to be connected to VDD or left floating. Please make sure that VDD is the first pad to be bonded. Pick-and-place and all component assembly are recommended to be performed in ESD protected area. Note: Pad coordinates measured from the left bottom corner of the chip to the center of the pads. The coordinates may vary depending on sawing width and location, however, distances between pads are accurate. ABSOLUTE MAXIMUM RATINGS Parameter Supply Voltage Input Voltage Power Dissipation Storage Temperature Note: Not valid for programming pin PV Symbol VDD - VSS VIN PMAX TST Min -0.3 VSS -0.3 -55 Max 6.0 VDD + 0.3 100 150 Unit V V mW o C Note 1) RECOMMENDED OPERATION CONDITIONS Parameter Supply Voltage Supply Current Operating Temperature Crystal Load Capacitance Symbol VDD ICC TC CL Conditions Vdd = 2.8 Volt -40 8.0 Min 2.5 Typ 2.8 2.3 Max 5.5 +85 Unit V mA o C pF 2 (5) DA9271.005 13 July 2006 ELECTRICAL CHARACTERISTICS (recommended operation conditions) Parameter Frequency Range Output Voltage (10 pF, Vdd 2.7V) Output Voltage (10 pF, Vdd 5.0V) Rise and Fall Time (10 - 50pF) Output Symmetry Crystal Load Startup Time Symbol fo Vout Vout Min 10.00 Typ Max 40.00 Unit MHz Vpp Vpp Note 1) 2.3 4.5 10 45 55 11.5 2 ns % pF ms 2) CG TSTART 5.1 Negative Resistance in Maximum NegR 85 CDAC Load at 32 MHz Negative Resistance in Maximum NegR 40 CDAC Load at 40 MHz Tri State Output Buffer PD V 3) ON State 1.6 VDD OFF State 0 0.55 Note 1: Rs < 10 crystal provides typically a maximum frequency of 40 MHz and Rs<30 a maximum frequency of 32 MHz. With Rs = 50 crystal the maximum frequency is typically 26 MHz. Note 2: Crystal Load is at minimum when all CDAC bits are 0s, and at maximum when all CDAC bits are 1s Note 3: If the Tri State Output Buffer pin is floating (i.e. PD pin is not connected), the Oscillator is in ON state. IC OUTLINES CLK DA OUT VSS PV 1182 m MAS9271 VDD X1 X2 PD Die map reference 1200 m Note 1: Also available in AK2140 pin order. Note 2: MAS9271 pads are round with 80 m diameter at opening. Note 3: Pins PV, CLK and DA must not be connected in PXO module end-user application. 3 (5) DA9271.005 13 July 2006 SAMPLES IN SB20 DIL PACKAGE 1 2 3 4 MAS9271 YYWW XXXXX.X 20 VDD 19 18CLK 17 DA 16 OUT 15GND 14 13 12 PV 11 X1 5 6 Top marking: YYWW = Year, Week XXXXX.X = Lot number X2 7 8 9 PD 10 4 (5) DA9271.005 13 July 2006 ORDERING INFORMATION Product Code MAS9271A1TG00 Product IC FOR PXO Package Tested wafers 215 m Comments Die size 1200 x 1182 m Please contact Micro Analog Systems Oy for other wafer thickness options. Please contact Micro Analog Systems Oy for other pin order. LOCAL DISTRIBUTOR MICRO ANALOG SYSTEMS OY CONTACTS Micro Analog Systems Oy Kamreerintie 2, P.O. Box 51 FIN-02771 Espoo, FINLAND Tel. +358 9 80 521 Fax +358 9 805 3213 http://www.mas-oy.com NOTICE Micro Analog Systems Oy reserves the right to make changes to the products contained in this data sheet in order to improve the design or performance and to supply the best possible products. Micro Analog Systems Oy assumes no responsibility for the use of any circuits shown in this data sheet, conveys no license under any patent or other rights unless otherwise specified in this data sheet, and makes no claim that the circuits are free from patent infringement. Applications for any devices shown in this data sheet are for illustration only and Micro Analog Systems Oy makes no claim or warranty that such applications will be suitable for the use specified without further testing or modification. 5 (5) |
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