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| (Preliminary) ABV8037/38/39 38MHz-320MHz Low Phase Noise VCXO FEATURES * * * Less than 0.4ps RMS (12KHz-20MHz) phase jitter for all frequencies. Less than 25ps (typ.) peak to peak jitter for all frequencies. Low phase noise output (@ 1MHz frequency offset -144dBc/Hz for 155.52MHz -140dBC/Hz for 311.04MHz 19MHz-40MHz crystal input. 38MHz-320MHz output. Available in PECL, LVDS, or CMOS 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 ABV803X * * * * * * * * 16-pin TSSOP VDDANA SEL0^ 10 XOUT 12 13 14 15 16 1 11 SEL1^ 9 XIN 8 7 GNDBUF QBAR VDDBUF Q DESCRIPTION The ABV803X is a monolithic low jitter and low phase noise VCXO, capable of 0.4ps RMS phase jitter and CMOS, LVDS, or PECL outputs, covering a wide frequency output range up to 320MHz. It allows the control of the output frequency with an input voltage (VCON), using a low cost crystal. The frequency selector pads of ABV803X enable output frequencies of (2, 4, 8, or 16) * F XIN . The ABV803X is designed to address the demanding requirements of high performance applications such as SONET, GPS, Video, etc. SEL2^ OE_CTRL VCON ABV803X 2 3 4 6 5 GNDANA 3x3 QFN Note1: QBAR is used for single ended CMOS output. Note2: ^ Denotes internal pull up resistor. BLOCK DIAGRAM VCON VARICAP VCO Divider Charge Pump + Loop Filter Output Divider (1,2,4,8) GNDBUF LP LM XIN XOUT XTAL OSC Phase Detector VCO (F XiN x16) 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) ABV8037/38/39 38MHz-320MHz Low Phase Noise VCXO OUTPUT ENABLE LOGICAL LEVELS Part # ABV8038 (PECL) ABV8037 & 39 (CMOS or CMOS) OE 0 (Default) 1 0 1 (Default) State Output enabled Tri-state Tri-state Output enabled PIN DESCRIPTIONS Name VDDANA XIN XOUT SEL2 OE_CTRL VCON GNDANA LP LM GNDBUF Q VDDBUF QBAR GNDBUF SEL1 SEL0 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 I P P O P O P I I VDD for analog Circuitry. Description Crystal input pin. (See Crystal Specifications on page 4). Crystal output pin. (See Crystal Specifications on page 4). Output frequency Selector pin. Output enable control pin. (See OE_CTRL Logic Levels). 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, Or single ended CMOS output. GND connection for output buffer circuitry. Output frequency Selector pin. Output frequency Selector pin. 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 2 (Preliminary) ABV8037/38/39 38MHz-320MHz Low Phase Noise VCXO FREQUENCY SELECTION TABLE SEL2 0 0 0 0 1 1 1 1 SEL1 0 0 1 1 0 0 1 1 SEL0 0 1 0 1 0 1 0 1 Selected Multiplier/Output Frequency VCO Max* VCO Min* Reserved Reserved Fin x 2 Fin x 8 Fin x 16 Fin x 4 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 Assistant' 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 Assistant' 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) ABV8037/38/39 38MHz-320MHz 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. 19 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 = 19 - 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 80 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) 4. General Electrical Specifications PARAMETERS Supply Current, Dynamic (with Loaded Outputs) Operating Voltage Output Clock Duty Cycle Short Circuit Current Note: CMOS operation is not advised above 200MHz with 15pF load; and 320MHz with 10pF load. ABV8037/38/39 TYP. MAX. 65/45/30 80/60/40 2.97 45 45 45 50 50 50 50 3.63 55 55 55 38MHz-320MHz Low Phase Noise VCXO SYMBOL IDD VDD @ 50% VDD (CMOS) @ 1.25V (LVDS) @ VDD - 1.3V (PECL) CONDITIONS PECL/LVDS/CMOS 38MHz UNITS mA V % mA 5. Jitter Specifications PARAMETERS Integrated jitter RMS 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 155.52MHz 311.04MHz 77.76MHz 155.52MHz 311.04MHz 77.76MHz 155.52MHz 311.04MHz MIN. TYP. 0.4 0.4 2.5 3 4 18 20 25 MAX. 0.5 0.5 4 5 7 30 30 35 UNITS ps Period jitter RMS ps Period jitter Peak-toPeak ps 6. Phase Noise Specifications PARAMETERS Phase Noise relative to carrier (typical) FREQ. 77.76MHz 155.52MHz 311.04MHz @10Hz -66 -62 -59 @100Hz -96 -92 -86 @1kHz -124 -120 -116 @10kHz -134 -132 -129 @100kHz -132 -128 -124 @1M -145 -144 -140 @10M -149 -150 -148 UNITS dBc/Hz Note: Phase Noise measured at VCON = 0V. 7. CMOS Electrical Characteristics PARAMETERS Output drive current Output Clock Rise/Fall Time Output Clock Rise/Fall Time SYMBOL IOH IOL CONDITIONS VOH= VDD-0.4V, VDD=3.3V VOL = 0.4V, VDD = 3.3V 0.3V ~ 3.0V with 15 pF load 20%-80% with 50 Load MIN. 30 30 TYP. MAX. UNITS mA mA 0.7 0.3 ns ns 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 5 (Preliminary) ABV8037/38/39 38MHz-320MHz 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) ABV8037/38/39 38MHz-320MHz 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) ABV8037/38/39 38MHz-320MHz Low Phase Noise VCXO LAYOUT RECOMMENDATIONS ABV803X (VCXO) 16 pin TSSOP ABV803X (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. - When connecting long traces (> 1 inch) to a CMOS output, it is important to design the traces as a transmission line or `stripline', to avoid reflections or ringing. In this case, the CMOS output needs to be matched to the trace impedance. Usually `striplines' are designed for 50 impedance and CMOS outputs usually have lower than 50 impedance so matching can be achieved by adding a resistor in series with the CMOS output pin to the `stripline' trace. - 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) ABV8037/38/39 38MHz-320MHz 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) ABV8037/38/39 38MHz-320MHz 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 ABV803X 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 ABV8037OC ABV8037OC-T ABV8037OCL ABV8037OCL-T ABV8037QC ABV8037QC-T ABV8037QCL ABV8037QCL-T ABV8038OC ABV8038OC-T ABV8038OCL ABV8038OCL-T ABV8038QC ABV8038QC-T ABV8038QCL ABV8038QCL-T ABV8039OC ABV8039OC-T ABV8039OCL ABV8039OCL-T ABV8039QC ABV8039QC-T ABV8039QCL ABV8039QCL-T Marking ABV8037OC ABV8037OC ABV8037OCL ABV8037OCL V8037QC V8037QC V8037QCL V8037QCL ABV8038OC ABV8038OC ABV8038OCL ABV8038OCL V8038QC V8038QC V8038QCL V8038QCL ABV8039OC ABV8039OC ABV8039OCL ABV8039OCL V8039QC V8039QC V8039QCL V8039QCL 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) 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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