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| (Preliminary) ABV8068/69 320-640MHz Low Phase Noise VCXO FEATURES * * Less than 0.4ps RMS (12KHz-20MHz) phase jitter for all frequencies. Low phase noise output (@ 1MHz frequency offset) -140dBc/Hz for 320.0MHz, -131dBC/Hz for 622.08MHz 20MHz-40MHz crystal input. 320MHz-640MHz output. PECL, or LVDS outputs. No external varicap required. Output Enable selector. Wide pull range (+/-200ppm). 3.3V operation. Available in 3x3 QFN or 16-pin TSSOP packages. PACKAGE PIN ASSIGNMENT VDDANA XIN XOUT SEL2^ OE_CTRL VCON GNDANA LP 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 SEL0^ SEL1^ GNDBUF QBAR VDDBUF Q GNDBUF LM ABV806X VDDANA * * * * * * * * 16-pin TSSOP DNC 10 DESCRIPTION The ABV806X is a monolithic low jitter and low phase noise VCXO, capable of 0.4ps RMS phase jitter and PECL or LVDS outputs, covering a wide frequency output range up to 640MHz. It allows the control of the output frequency with an input voltage (VCON), using a low cost crystal. The ABV806X is designed to address the demanding requirements of high performance applications such as SONET, GPS, Video, etc. XOUT DNC OE_CTRL VCON 12 13 14 11 DNC 9 8 7 XIN GNDBUF QBAR VDDBUF Q ABV806X 15 16 1 2 3 4 6 5 GNDANA 3x3mm QFN Note1: ^ Denotes internal pull up resistor. BLOCK DIAGRAM VCON VARICAP VCO Divider Charge Pump + Loop Filter GNDBUF LP LM XIN XOUT XTAL OSC Phase Detector VCO (F XiN x16) Output Divider QBAR Q Performance Tuner OE 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 1 (Preliminary) ABV8068/69 320-640MHz Low Phase Noise VCXO OUTPUT ENABLE LOGICAL LEVELS Part # ABV8068 (PECL) ABV8069 (LVDS) OE 0 (Default) 1 0 1 (Default) State Output enabled Tri-state Tri-state Output enabled PIN DESCRIPTIONS Name VDDANA XIN XOUT DNC OE_CTRL VCON GNDANA LP LM GNDBUF Q VDDBUF QBAR GNDBUF DNC DNC TSSOP Pin number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 3x3mm QFN Pin number 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 Type P I O I I P P O P O P VDD for analog Circuitry. Description Crystal input pin. (See Crystal Specifications on page 4). Crystal output pin. (See Crystal Specifications on page 4). Do Not Connect Output enable control pin. (See OE_CTRL Logic Levels above). Voltage control input. Ground for analog circuitry. Tuning inductor connection. The inductor is recommended to be a high Q small size 0402 or 0603 SMD component, and must be placed between LP and adjacent LM pin. Place inductor as close to the IC as possible to minimize parasitic effects and to maintain inductor Q. GND connection for output buffer circuitry. PECL or LVDS output. VDD connection for output buffer circuitry. VDDBUF should be separately decoupled from other VDDs whenever possible. Complementary PECL, LVDS output. GND connection for output buffer circuitry. Do Not Connect Do Not Connect 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 2 (Preliminary) ABV8068/69 320-640MHz Low Phase Noise VCXO FREQUENCY SELECTION TABLE SEL2 0 0 1 SEL1 0 0 1 All Other Combinations SEL0 0 1 1 Selected Multiplier/Output Frequency VCO Max* VCO Min* Fin x 16 Reserved All SEL pads have internal pull-ups (default value is `1'). Bond to GND to set to 0. * Special Test Modes to help selecting the inductor value for the target output frequency. PERFORMANCE TUNING & INDUCTOR VALUE SELECTION Please refer to Abracon's `Tuning Assistance' software to automatically calculate the optimum inductor values for your application. In addition, the chart below could be used as a reference for quick inductor value selection. Please note that the inductor values mentioned in the table below, or when using the `Tuning Assistance' are derived based on the parasitic values of Abracon's evaluation board. For performance enhancement of your custom board design, please follow the following instruction: Use the special test modes "VCO Max" and "VCO Min" to determine the optimum inductor value. "VCO Max" represents the high end of the VCO range and "VCO Min" represents the low end of the VCO range. The output frequency in the "VCO Max" and "VCO Min" test modes is VCO/16. This means that the output frequencies are around the crystal frequency that will be used. The optimum inductor value is where the target crystal frequency is closest to the middle between the "VCO Max" and "VCO Min" output frequencies. In this case the VCO will lock in the middle of its tuning range with maximum margin on either side. 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 3 (Preliminary) ABV8068/69 320-640MHz Low Phase Noise VCXO ELECTRICAL SPECIFICATIONS 1. Absolute Maximum Ratings PARAMETERS Supply Voltage Input Voltage, dc Output Voltage, dc Storage Temperature Ambient Operating Temperature* Junction Temperature Lead Temperature (soldering, 10s) ESD Protection, Human Body Model SYMBOL VDD VI VO TS TA TJ MIN. -0.5 -0.5 -65 -40 MAX. 4.6 VDD+0.5 VDD+0.5 150 85 125 260 2 UNITS V V V C C C C kV Exposure of the device under conditions beyond the limits specified by Maximum Ratings for extended periods may cause permanent damage to the device and affect product reliability. These conditions represent a stress rating only, and functional operations of the device at these or any other conditions above the operational limits noted in this specification is not implied. * Note: Operating Temperature is guaranteed by design for all parts (COMMERCIAL and INDUSTRIAL), but tested for COMMERCIAL grade only. 2. Crystal Specifications PARAMETERS Crystal Resonator Frequency Crystal Loading Rating Crystal Pullability Recommended ESR SYMBOL FXIN CL (xtal) C0/C1 (xtal) RE CONDITIONS Parallel Fundamental Mode at VCON = 0V at VCON = 1.65V at VCON = 3.3V AT cut AT cut MIN. 20 TYP. 17.7 9.5 5.4 MAX. 40 UNITS MHz pF 250 30 Note: Crystal Loading rating: The listed numbers are for the IC only. Specify the crystal for the value at VCON = 1.65V and add the PCB & package parasitic. A round number (i.e. 12pF) can be achieved by adding external capacitors. Try to add the same value to XIN and XOUT, and please note, that frequency pulling and oscillator gain may decrease. 3. Voltage Control Crystal Oscillator PARAMETERS VCXO Stabilization Time * VCXO Tuning Range CLK output pullability VCXO Tuning Characteristic Pull range linearity VCON pin input impedance VCON modulation BW SYMBOL TVCXOSTB CONDITIONS From power valid FXIN = 20 - 40MHz; XTAL C0/C1 < 250 0V VCON 3.3V VCON=1.65V, 1.65V MIN. TYP. MAX. 10 UNITS ms ppm ppm ppm/V % k kHz 500 200 150 10 60 25 0V VCON 3.3V, -3dB Note: Parameters denoted with an asterisk (*) represent nominal characterization data and are not production tested to any specific limits. 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 4 (Preliminary) ABV8068/69 320-640MHz Low Phase Noise VCXO 4. General Electrical Specifications PARAMETERS Supply Current, Dynamic (with Loaded Outputs) Operating Voltage Output Clock Duty Cycle Short Circuit Current SYMBOL IDD VDD CONDITIONS PECL/LVDS 320MHz TYP. MAX. 90/70 UNITS mA V % mA @ 50% VDD (CMOS) @ 1.25V (LVDS) @ VDD - 1.3V (PECL) 2.97 45 45 45 50 50 50 50 3.63 55 55 55 5. Jitter Specifications PARAMETERS Integrated jitter RMS Period jitter RMS Period jitter Peak-toPeak CONDITIONS Integrated 12 kHz to 20 MHz With capacitive decoupling between VDD and GND. Over 10,000 cycles. With capacitive decoupling between VDD and GND. Over 10,000 cycles. FREQUENCY 320.0MHz 622.08MHz 320.0MHz 622.08MHz 320.0MHz 622.08MHz MIN. TYP. 0.4 0.4 3 6 25 50 MAX. 0.5 0.6 5 8 30 70 UNITS ps ps ps 6. Phase Noise Specifications PARAMETERS Phase relative to carrier (typical) Noise 2 FREQ. 320.0MHz 622.08MHz @10Hz -59 -48 @100Hz -86 -80 @1kHz -116 -108 @10kHz -129 -118 @100kHz -124 -114 @1M -140 -131 @10M -148 -138 UNITS dBc/Hz Note: Phase Noise measured at VCON = 0V 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 5 (Preliminary) ABV8068/69 320-640MHz Low Phase Noise VCXO 8. LVDS Electrical Characteristics PARAMETERS Output Differential Voltage VDD Magnitude Change Output High Voltage Output Low Voltage Offset Voltage Offset Magnitude Change Power-off Leakage Output Short Circuit Current SYMBOL VOD VOD VOH VOL VOS VOS IOXD IOSD CONDITIONS MIN. 247 -50 TYP. 355 MAX. 454 50 UNITS mV mV V V V mV uA mA RL = 100 (see figure) 1.4 0.9 1.125 0 1.1 1.2 3 1 -5.7 1.6 1.375 25 10 -8 Vout = VDD or GND VDD = 0V 9. LVDS Switching Characteristics PARAMETERS Differential Clock Rise Time Differential Clock Fall Time LVDS Levels Test Circuit OUT SYMBOL tr tf CONDITIONS RL = 100 CL = 10 pF (see figure) MIN. 0.2 0.2 TYP. 0.7 0.7 MAX. 1.0 1.0 UNITS ns ns LVDS Switching Test Circuit OUT 50 CL = 10pF VOD VOS VDIFF RL = 100 50 CL = 10pF OUT OUT LVDS Transistion Time Waveform OUT 0V (Differential) OUT 80% VDIFF 20% 0V 80% 20% tR tF 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 6 (Preliminary) ABV8068/69 320-640MHz Low Phase Noise VCXO 10. PECL Electrical Characteristics PARAMETERS Output High Voltage Output Low Voltage SYMBOL VOH VOL CONDITIONS RL = 50 to (VDD - 2V) (see figure) MIN. VDD - 1.025 MAX. VDD - 1.620 UNITS V V 11. PECL Switching Characteristics PARAMETERS Clock Rise Time Clock Fall Time SYMBOL tr tf CONDITIONS @20/80% - PECL @80/20% - PECL MIN. TYP. 0.6 0.5 MAX. 1.5 1.5 UNITS ns ns PECL Levels Test Circuit OUT VDD OUT PECL Output Skew 50 2.0V 50% 50 OUT OUT tSKEW PECL Transistion Time Waveform DUTY CYCLE 45 - 55% 55 - 45% OUT 80% 50% 20% OUT tR tF 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 7 (Preliminary) ABV8068/69 320-640MHz Low Phase Noise VCXO LAYOUT RECOMMENDATIONS ABV806X (VCXO) 16-pin TSSOP ABV806X (VCXO) 3x3 QFN PCB LAYOUT CONSIDERATIONS FOR PERFORMANCE OPTIMIZATION The following guidelines are to assist you with a performance optimized PCB design: - Keep all the PCB traces to ABV80 as short as possible, as well as keeping all other traces as far away from it as possible. - Place the crystal as close as possible to both crystal pins of the device. This will reduce the cross-talk between the crystal and the other signals. - Separate crystal pin traces from the other signals on the PCB, but allow ample distance between the two crystal pin traces. - Place a 0.01F~0.1F decoupling capacitor between VDD and GND, on the component side of the PCB, close to the VDD pin. It is not recommended to place this component on the backside of the PCB. Going through vias will reduce the signal integrity, causing additional jitter and phase noise. - It is highly recommended to keep the VDD and GND traces as short as possible. - Please contact Abracon for the application note on how to design outputs driving long traces or the Gerber files for the ABV80 layout. 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 8 (Preliminary) ABV8068/69 320-640MHz Low Phase Noise VCXO PACKAGE INFORMATION 16-PIN SSOP 16 PIN TSSOP ( mm ) Symbol A A1 B C D E H L e Min. Max. 1.20 0.05 0.15 0.19 0.30 0.09 0.20 4.90 5.10 4.30 4.50 6.40 BSC 0.45 0.75 0.65 BSC E H D A A1 e B C L 16-PIN 3x3 QFN 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 9 (Preliminary) ABV8068/69 320-640MHz Low Phase Noise VCXO ORDERING INFORMATION For part ordering, please contact our Sales Department: 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 PART NUMBER The order number for this device is a combination of the following: Device number, Package type and Operating temperature range ABV806X X C L T PART NUMBER T= TAPE & REEL NONE= TUBE L= GREEN PACKAGE NONE= REGULAR PACKAGE PACKAGE TYPE O=TSSOP Q= QFN 4x4 TEMPERATURE C=COMMERCIAL I=INDUSTRAL Order Number ABV8068OC ABV8068OC-T ABV8068OCL ABV8068OCL-T ABV8068QC ABV8068QC-T ABV8068QCL ABV8068QCL-T ABV8069OC ABV8069OC-T ABV8069OCL ABV8069OCL-T ABV8069QC ABV8069QC-T ABV8069QCL ABV8069QCL-T Marking ABV8068OC ABV8068OC ABV8068OCL ABV8068OCL V8068QC V8068QC V8068QCL V8068QCL ABV8069OC ABV8069OC ABV8069OCL ABV8069OCL V8069QC V8069QC V8069QCL V8069QCL Package Option TSSOP - Tube TSSOP - Tape & Reel TSSOP - Tube (GREEN Package) TSSOP - Tape & Reel (GREEN Package) QFN - Tube QFN - Tape & Reel QFN - Tube (GREEN Package) QFN - Tape & Reel (GREEN Package) TSSOP - Tube TSSOP - Tape & Reel TSSOP - Tube (GREEN Package) TSSOP - Tape & Reel (GREEN Package) QFN - Tube QFN - Tape & Reel QFN - Tube (GREEN Package) QFN - Tape & Reel (GREEN Package) Abracon Corporation, reserves the right to make changes in its products or specifications, or both at any time without notice. The information furnished by Abracon is believed to be accurate and reliable. However, Abracon makes no guarantee or warranty concerning the accuracy of said information and shall not be responsible for any loss or damage of whatever nature resulting from the use of, or reliance upon this product. LIFE SUPPORT POLICY: Abracon's products are not authorized for use as critical components in life support devices or systems without the express written approval of the President of Abracon Corporation. 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 10 |
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