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| 5x7mm Surface Mount High Precision TCXO In Stock at Digi-Key Description 2111 Comprehensive Drive Aurora, Illinois 60505 Phone: 630-851-4722 Fax: 630-851-5040 www.conwin.com US Headquarters 630-851-4722: European Headquarters: +353-61-472221 D7 The Connor-Winfield 's D75AS 5A 20 S 0 8 .0M 4 7 is a 5x7mm Surface Mount Hz Temperature Compensated Crystal Controlled Oscillators (TCXO) with a clipped sinewave output. Through the use of Analog Temperature Compensation, the D75AS is capable of holding sub 0.25ppm stabilities over the 0 to 70C temperature range. Features Model D75AS TCXO 3.3V Operation Clipped Sinwave Output Frequency Stability: 0.25ppm Temperature Range: 0 to 70C Low Jitter <1pS RMS Tri-State Enable/Disable Function 5x7mm Surface Mount Package Tape and Reel Packaging RoHS Compliant / Lead Free Specifications Absolute Maximum Ratings Parameter Storage Temperature Supply Voltage Input Voltage Operating Specifications Parameter Center Frequency Frequency Calibration @ 25C Frequency Stability [(Fmax - Fmin)/2.Fo] Supply Voltage Variation (Vcc 5%) Load Coefficient (5%) Static Temperature Hysteresis Frequency shift after reflow soldering Aging 1st year Total Frequency Tolerance Temperature Range Supply Voltage Supply Current Period Jitter Phase Jitter (BW=12kHz to 20MHz) SSB Phase Noise at 10Hz offset SSB Phase Noise at 100Hz offset SSB Phase Noise at 1KHz offset SSB Phase Noise at >10KHz offset Input Characteristics For Enable / Disable Function (Pin 8) Parameter Enable Voltage (High) or open circuit Disable Voltage (Low) Output Disabled Clipped Sinewave Output Characteristics Parameter Output Voltage Output Load Resistance Output Load Capacitance Minimum 1.00 Nominal 10K 10 Maximum Units V pk-pk Ohms pF 8 Note 7 (Vih) (Vil) Minimum 70%Vcc Nominal Maximum 30%Vcc Units Vdc Vdc Note 6 (Vcc) (Icc) (Fo) -1.00 -0.25 -0.025 -0.025 -1.00 -1.00 -4.60 0 3.135 Minimum Nominal 20.0 3.3 3 0.5 -80 -110 -135 -150 1.00 0.25 0.025 0.025 0.40 1.00 1.00 4.60 70 3.465 10 5 1 Maximum Units MHz ppm ppm ppm ppm ppm ppm ppm ppm C Vdc mA ps rms ps rms dBc/Hz dBc/Hz dBc/Hz dBc/Hz 5 Absolute, 3 4 1 2 Note (Vcc) Minimum -55 -0.5 -0.5 Nominal Maximum 85 6.0 Vcc+0.5 Units C Vdc Vdc Note Note: 1) 2) 3) 4) 5) Bulletin Page Revision Date Tx243 1 of 2 01 01 May 2009 6) 7) 8) Initial calibration @ 25C. Specifications at time of shipment after 48 hours of operation Frequency stability vs. change in temperature. Frequency change after reciprocal temperature ramped over the operating range. Frequency measured before and after at 25C. Within two hours after reflow. Inclusive of calibration @ 25C, frequency vs. change in temperature, change in supply voltage (5%), load change (5%), reflow soldering process and 20 years aging, referenced to Fo. Leave Pad 8 unconnected if enable / disable function is not required. When tri-stated, the output stage is disabled but the oscillator and compensation circuit are still active (current consumption < 1 mA). Output is AC coupled. For best performance it is recommended that the circuit connected to this output should have an equivalent input capacitance of 10pF. Specifications subject to change without notice. All dimensions in inches. (c) Copyright 2008 The Connor-Winfield Corporation 2111 Comprehensive Drive Aurora, Illinois 60505 Phone: 630-851-4722 Fax: 630-851-5040 www.conwin.com Package Characteristics Package Ceramic Surface Mount Package. Ordering Information D75AS - 020.0MHZ * TCXO SERIES CENTER FREQUENCY Environmental Characteristics Vibration: Shock: Soldering: Solderability Vibration per Mil Std 883E Method 2007.3 Test Condition A Mechanical Shock per Mil Std 883E Method 2002.4 Test Condition B. SMD product suitable for Convection Reflow soldering. Peak temperature 260C. Maximum time above 220C, 60 seconds. Solderability per Mil Std 883E Method 2003 * For the tape and reel option, add -T to the end of the part number. Example: D75AS-020.0 MHZ -T Design Recommendations Vcc, should have a large copper area for reduced inductance. Connect a 0.01uF bypass capacitor <0.1"(2.54mm) from the pad. Pad Connections Buffer input load should be equivalent to 15pF. 50 Ohm trace Vcc <1"by design Buffer Ground Top View Ground Pad 1 2 3 4 5 6 7 8 9 10 Connection Do not connect Do not connect Do not connect Ground Output Do not connect Do not connect Enable / Disable Supply, Vcc Do not connect 8 9 6 5 0.010"(0.254mm) Recommended clearance inductance for internal copper flood. Ground, should have a large copper area for reduced inductance. 10 1 3 4 Top View Output Waveform OSC TOP LAYER GROUND LAYER 50 Ohm Trace Without Output Vias Buffer BOTTOM LAYER Do not route any traces in the keep out area. It is recommended the next layer under the keep out area is to be ground plane. 10ns 200mV Package Layout 0.276 0.006 (7.0mm) D75AS 0847 20.0MHz Pin 1 ....... 0.079 Max. (2.0mm) 0.197 0.006 (5.0mm) 0.025(6 Places) (0.635mm) 0.040 (1.02mm) (6 Places) Suggested Pad Layout 0.295 (7.49mm) 0.030 (0.76mm) 0.051 (1.28mm) Test Circuit E/D DNC DNC 8 Vcc Supply Voltage 9 10 DNC 1 7 6 5 4 10Kohm Output 0.037 (0.94mm) 0.215 (5.46mm) 1 0.030 (0.762mm) (4 Places) 2 3 4 Top View 1 Keep Out Area* .01 uF Bypass 2 3 10 pF** 10 0.100 (2.54mm) 9 8 0.038 (0.965mm) (4 Places) 7 6 5 0.051 (1.28mm) DNC DNC DNC 0.100 (2.54mm) Dimensional Tolerance: .005 (.127mm) .02 (.508mm) Tape and Reel Information * Do not route any traces in the keep out area. It is recommended the next layer under the keep out area is to be ground plane. DNC = Do Not Connect E/D = Enable / Disable ** NPO Grade component Solder Profile Temperature 260C 220C 180C 260C 1 150C 120C 0 120 S Max. Time 10 S 60 S Max. 360 Sec. Max. US Headquarters: 630-851-4722 European Headquarters: +353-61-472221 Specifications subject to change without notice. All dimensions in inches. (c) Copyright 2008 The Connor-Winfield Corporation Bulletin Page Revision Date Tx243 2 of 2 01 01 May 2009 |
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