ABV8068 ABRACON | Alldatasheet
Document overview
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Technical content
(Preliminary) ABV8068/69 320-640MHz Low Phase Noise VCXO 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 1
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.
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 perf ormance applications such as SONET, GPS, Video, etc. BLOCK DIAGRAM PACKAGE PIN ASSIGNMENT 16-pin TSSOP 3x3mm QFN Note1: ^ Denotes internal pull up resistor. Phase Detector Charge Pump Loop Filter VCO (FXiN x16) VCO Divider XTAL OSC QBAR OE XIN XOUT Q VCON VARICAP Performance Tuner Output Divider ABV806X VDDANA XIN XOUT SEL2^ OE_CTRL VCON GNDANA LP SEL0^ GNDBUF SEL1^ GNDBUF QBAR VDDBUF Q LM ABV806X GNDBUF VDDBUF Q QBAR XIN DNC DNC VDDANA DNC XOUT OE_CTRL VCON LP GNDANA LM GNDBUF 12 11 10 9 123
(Preliminary) ABV8068/69 320-640MHz Low Phase Noise VCXO 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 2 OUTPUT ENABLE L OGICAL LEVELS Part # OE State 0 (Default) Output enabled ABV8068 (PECL)
1 Tri-state
0 Tri-state ABV8069 (LVDS)
1 (Default) Output enabled PIN DESCRIPTIONS Name TSSOP Pin number 3x3mm QFN Pin number Type Description VDDANA 1 11 P VDD for analog Circuitry. XIN 2 12 I Crystal input pin. (See Crystal Specifications on page 4). XOUT 3 13 O Crystal output pin. (See Crystal Specifications on page 4). DNC 4 14 - Do Not Connect OE_CTRL 5 15 I Output enable control pin. (See OE_CTRL Logic Levels above). VCON 6 16 I Voltage control input. GNDANA 7 1 P Ground for analog circuitry. LP 8 2 - LM 9 3 - 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. GNDBUF 10 4 P GND connection for output buffer circuitry. Q 11 5 O PECL or LVDS output. VDDBUF 12 6 P VDD connection for output buffer circuitry. VDDBUF should be separately decoupled from other VDDs whenever possible. QBAR 13 7 O Complementary PECL, LVDS output. GNDBUF 14 8 P GND connection for output buffer circuitry. DNC 15 9 - Do Not Connect DNC 16 10 - Do Not Connect
(Preliminary) ABV8068/69 320-640MHz Low Phase Noise VCXO 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 3 FREQUENCY SELECTION TABLE SEL2 SEL1 SEL0 Selected Multiplier/Output Frequency 0 0 0 VCO Max* 0 0 1 VCO Min* 1 1 1 Fin x 16 All Other Combinations 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 & IN DUCTOR 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 us ed as a reference for quick inductor value selection. Please note that the inductor values mentioned in t he table below, or when using the ‘Tuning Assistance’ are derived based on the parasitic values of Abracon’s ev aluation 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 optimu m inductor value is where the target crystal frequency is closest to the middle between the “VCO Max” and “VCO Mi n” output frequencies. In th is case the VC O will lock in the middle of its tuning range with maximum margin on either side.
(Preliminary) ABV8068/69 320-640MHz Low Phase Noise VCXO 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 4 ELECTRICAL SPECIFICATIONS 1. Absolute Maximum Ratings PARAMETERS SYMBOL MIN. MAX. UNITS Supply Voltage V DD 4.6 V Input Voltage, dc V I -0.5 V DD +0.5 V Output Voltage, dc V O -0.5 V DD +0.5 V Storage Temperature T S -65 150 °C Ambient Operating Temperature* T A -40 85 °C Junction Temperature T J 125 °C Lead Temperature (soldering, 10s) 260 °C ESD Protection, Human Body Model 2 kV Exposure of the device under conditions beyond the limits specif ied by Maximum Ratings for extended periods may cause permanent damage to the device and affect product reliability. Thes e conditions represent a stress rating on ly, and functional operations of the devic e at these or any other conditions above the operational limits noted in this spec ification 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 SYMBOL CONDITIONS MIN. TYP. MAX. UNITS Crystal Resonator Frequency F XIN Parallel Fundamental Mode 20 40 MHz at VCON = 0V 17.7 at VCON = 1.65V 9.5 Crystal Loading Rating C L (xtal) at VCON = 3.3V 5.4 pF Crystal Pullability C 0/C1 (xtal) AT cut 250 - Recommended ESR R E AT cut 30 Ω 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 ex ternal 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 SYMBOL CONDITIONS MIN. TYP. MAX. UNITS VCXO Stabilization Time * T VCXOSTB From power valid 10 ms VCXO Tuning Range FXIN = 20 – 40MHz; XTAL C 0/C1 < 250 0V ≤ VCON ≤ 3.3V 500 ppm CLK output pullability VCON=1.65V, ±1.65V ±200 ppm VCXO Tuning Characteristic 150 ppm/V Pull range linearity 10 % VCON pin input impedance 60 kΩ VCON modulation BW 0V ≤ VCON ≤ 3.3V, -3dB 25 kHz Note: Parameters denoted with an asterisk (*) represent nominal charac terization data and are not production tested to any specific limits.
(Preliminary) ABV8068/69 320-640MHz Low Phase Noise VCXO 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 5 4. General Electrical Specifications PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS Supply Current, Dynamic (with Loaded Outputs) I DD PECL/LVDS 320MHz<Fout<640MHz 90/70 mA Operating Voltage V DD 2.97 3.63 V Output Clock Duty Cycle @ 50% V DD (CMOS) @ 1.25V (LVDS) @ V DD – 1.3V (PECL) Short Circuit Current ±50 mA 5. Jitter Specifications PARAMETERS CONDITIONS FREQUE NCY MIN. TYP. MAX. UNITS 320.0MHz 0.4 0.5 Integrated jitter RMS Integrated 12 kHz to 20 MHz 622.08MHz 0.4 0.6 ps 320.0MHz 3 5 Period jitter RMS With capacitive decoupling between VDD and GND. Over 10,000 cycles. 622.08MHz 6 8 ps 320.0MHz 25 30 Period jitter Peak-to- Peak With capacitive decoupling between VDD and GND. Over 10,000 cycles. 622.08MHz 50 70 ps 6. Phase Noise Specifications PARAMETERS FREQ. @10Hz @100Hz @1kHz @ 10kHz @100kHz @1M @10M UNITS 320.0MHz -59 -86 - 116 -129 -124 -140 -148 Phase Noise 2 relative to carrier (typical) 622.08MHz -48 -80 - 108 -118 -114 -131 -138 dBc/Hz Note: Phase Noise measured at VCON = 0V
(Preliminary) ABV8068/69 320-640MHz Low Phase Noise VCXO 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 6 8. LVDS Electrical Characteristics PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS Output Differential Voltage V OD 247 355 454 mV VDD Magnitude Change ∆VOD -50 50 mV Output High Voltage V OH 1.4 1.6 V Output Low Voltage V OL 0.9 1.1 V Offset Voltage V OS 1.125 1.2 1.375 V Offset Magnitude Change ∆VOS RL = 100 Ω (see figure) 0 3 25 mV Power-off Leakage I OXD Vout = V DD or GND VDD = 0V ±1 ±10 uA Output Short Circuit Current I OSD -5.7 -8 mA 9. LVDS Switching Characteristics PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS Differential Clock Rise Time t r 0.2 0.7 1.0 ns Differential Clock Fall Time t f RL = 100 Ω CL = 10 pF (see figure) 0.2 0.7 1.0 ns OUT OUT VOD VOS 50Ω 50Ω OUT VDIFF RL = 100Ω CL = 10pF CL = 10pF LVDS Switching Test CircuitLVDS Levels Test Circuit LVDS Transistion Time Waveform OUT OUT OUT 0V (Differential) 20% 80% 20% 80% tR tF VDIFF
(Preliminary) ABV8068/69 320-640MHz Low Phase Noise VCXO 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 7 10. PECL Electrical Characteristics PARAMETERS SYMBOL CONDITIONS MIN. MAX. UNITS Output High Voltage V OH V DD – 1.025 V Output Low Voltage V OL RL = 50 Ω to (V DD – 2V) (see figure) V DD – 1.620 V 11. PECL Switching Characteristics PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS Clock Rise Time t r @20/80% - PECL 0.6 1.5 ns Clock Fall Time t f @80/20% - PECL 0.5 1.5 ns OUT OUT 50Ω 50Ω PECL Levels Test Circuit PECL Transistion Time Waveform OUT OUT 50% 20% 80% tR tF VDD DUTY CYCLE 45 - 55% 55 - 45% 50% OUT OUT tSKEW PECL Output Skew 2.0V
(Preliminary) ABV8068/69 320-640MHz Low Phase Noise VCXO 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 8 LAYOUT RECOMMENDATIONS PCB LAYOUT CONSIDERATIONS FO R 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 keepi ng 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 0.01µF~0.1µF 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. ABV806X (VCXO) 16-pin TSSOP ABV806X (VCXO) 3x3 QFN
(Preliminary) ABV8068/69 320-640MHz Low Phase Noise VCXO 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 9
PACKAGE INFORMATION
C L A EH D e B
16 PIN TSSOP ( mm )
Symbol Min. Max. A - 1.20 A1 0.05 0.15 B0 . 1 9 0 . 3 0 C0 . 0 9 0 . 2 0 D4 . 9 0 5 . 1 0 E4 . 3 0 4 . 5 0 H 6.40 BSC L0 . 4 5 0 . 7 5 e 0.65 BSC 16-PIN 3x3 QFN
(Preliminary) ABV8068/69 320-640MHz Low Phase Noise VCXO 30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 9/1/05 Page 10
ORDERING INFORMATION
Abracon Corporation, reserves the right to make changes in its products or specifications, or bo th 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 a ccuracy 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 comp onents in life support devices or systems without the express written approval of the President of Abracon Corporation. 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 Order Number Marking Package Option ABV8068OC ABV8068OC TSSOP - Tube ABV8068OC-T ABV8068OC TSSOP - Tape & Reel ABV8068OCL ABV8068OCL TSSOP - Tube (GREEN Package) ABV8068OCL-T ABV8068OCL TSSOP - Tape & Reel (GREEN Package) ABV8068QC V8068QC QFN - Tube ABV8068QC-T V8068QC QFN - Tape & Reel ABV8068QCL V8068QCL QFN - Tube (GREEN Package) ABV8068QCL-T V8068QCL QFN - Tape & Reel (GREEN Package) ABV8069OC ABV8069OC TSSOP - Tube ABV8069OC-T ABV8069OC TSSOP - Tape & Reel ABV8069OCL ABV8069OCL TSSOP - Tube (GREEN Package) ABV8069OCL-T ABV8069OCL TSSOP - Tape & Reel (GREEN Package) ABV8069QC V8069QC QFN - Tube ABV8069QC-T V8069QC QFN - Tape & Reel ABV8069QCL V8069QCL QFN - Tube (GREEN Package) ABV8069QCL-T V8069QCL QFN - Tape & Reel (GREEN Package) TEMPERATURE C=COMMERCIAL I=INDUSTRAL PACKAGE TYPE O=TSSOP Q= QFN 4x4 L= GREEN PACKAGE NONE= REGULAR PACKAGE T= TAPE & REEL NONE= TUBE PART NUMBER