CY2XF34 High Performance LVPECL Oscillator with Frequency Margining - Pin Control High Performance LVPECL Oscillator with Frequency Margining - Pin Control Features Functional Description ■ Low Jitter Crystal Oscillator (XO) The CY2XF34 is a high performance and high frequency Crystal Oscillator (XO). It uses a Cypress proprietary low noise PLL to synthesize the frequency from an integrated crystal. The output frequency can be changed through two select pins, allowing easy frequency margin testing in applications. ■ Less than 1 ps Typical RMS Phase Jitter ■ Differential LVPECL Output ■ Output Frequency from 50 MHz to 690 MHz ■ Two Frequency Margining Control Pins (FS0, FS1) ■ Factory Configured or Field Programmable ■ Integrated Phase-Locked Loop (PLL) ■ Supply Voltage: 3.3 V or 2.5 V ■ Pb-Free Package: 5.0 × 3.2 mm LCC ■ Commercial and Industrial Temperature Ranges The CY2XF34 is available as a factory configured device or as a field programmable device. Logic Block Diagram C RYSTAL OSCILLATOR FS0 LOW -NOISE PLL 4 CLK 5 CLK# OUTPUT DIVIDER 1 FREQUENCY SELECT DECODE FS1 2 Pinouts Figure 1. Pin Diagram - 6-pin Ceramic LCC FS0 1 6 VDD FS1 2 5 CLK# VSS 3 4 CLK Pin Definitions Pin 1, 2 Name FS0, FS1 I/O Type Description CMOS Input Frequency Select 4, 5 CLK, CLK# LVPECL Output Differential Output Clock 6 VDD Power Supply Voltage: 2.5 V or 3.3 V 3 VSS Power Ground Cypress Semiconductor Corporation Document Number: 001-53149 Rev. *D • 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600 Revised March 21, 2011 [+] Feedback CY2XF34 Functional Description Factory Configured CY2XF34 The FS0 and FS1 pins select between four different output frequencies, as shown in Table 1. Frequency margining is a common application for this feature. One frequency is used for the standard operating mode of the device, while the other frequencies are available for margin testing, either during product development or in system manufacturing test. For customers wanting ready-to-use devices, the CY2XF34 is available with no field programming required. All requests are submitted to the local Cypress Field Application Engineer (FAE) or sales representative. After the request is processed, you receive a new part number, samples, and datasheet with the programmed values. This part number is used for additional sample requests and production orders. Table 1. Frequency Select Output Frequency Programming Variables FS1 FS0 0 0 Frequency 0 Output Frequencies 0 1 Frequency 1 1 0 Frequency 2 1 1 Frequency 3 The CY2XF34 is programmed with up to four independent output frequencies, which are then selected using the FS0 and FS1 pins. The device can synthesize frequencies to a resolution of 1 part per million (ppm), but the actual accuracy of the output frequency is limited by the accuracy of the integrated reference crystal. When changing the output frequency, the frequency transition is not guaranteed to be smooth. There can be frequency excursions beyond the start frequency and the new frequency. Glitches and runt pulses are possible, and time must be allowed for the PLL to relock. Programming Description The CY2XF34 is a programmable device. Before being used in an application, it must be programmed with the output frequencies and other variables described in a later section. Two different device types are available, each with its own programming flow. They are described in the following sections. Field Programmable CY2XF34F Field programmable devices are shipped unprogrammed and must be programmed before being installed on a printed circuit board (PCB). Customers use CyberClocks™ Online Software to specify the device configuration and generate a JEDEC (extension .jed) programming file. Programming of samples and prototype quantities is available using a Cypress programmer. Third party vendors manufacture programmers for small to large volume applications. Cypress’s value added distribution partners also provide programming services. Field programmable devices are designated with an “F” in the part number. They are intended for quick prototyping and inventory reduction. The CY2XF34 is One Time Programmable (OTP). The software is located at www.cyberclocksonline.com. Document Number: 001-53149 Rev. *D The CY2XF34 has an output frequency range of 50 MHz to 690 MHz, but the range is not continuous. The CY2XF34 cannot generate frequencies in the ranges of 521 MHz to 529 MHz, and 596 MHz to 617 MHz. Industrial Versus Commercial Device Performance Industrial and Commercial devices have different internal crystals. This has a potentially significant impact on performance levels for applications requiring the lowest possible phase noise. CyberClocks Online Software displays expected performance for both options. Phase Noise Versus Jitter Performance In most cases, the device configuration for optimal phase noise performance is different from the device configuration for optimal cycle to cycle or period jitter. CyberClocks Online Software includes algorithms to optimize performance for either parameter. Table 2. Device Programming Variables Variable Output Frequency 0 (Power on default) Output Frequency 1 Output Frequency 2 Output Frequency 3 Optimization (phase noise or jitter) Temperature range (Commercial or Industrial) Page 2 of 10 [+] Feedback CY2XF34 Absolute Maximum Conditions Parameter Description Min Max Unit –0.5 4.4 V Relative to VSS –0.5 VDD + 0.5 V Non Operating –55 135 °C –40 135 °C ESD Protection (Human Body Model) JEDEC STD 22-A114-B 2000 – V Thermal Resistance, Junction to Ambient 0 m/s airflow VDD Supply Voltage VIN[1] Input Voltage, DC TS Temperature, Storage TJ Temperature, Junction ESDHBM JA[2] Condition 64 °C/W Operating Conditions Parameter Min Typ Max Unit 3.3 V Supply Voltage Range 3.135 3.3 3.465 V 2.5 V Supply Voltage Range 2.375 2.5 2.625 V TPU Power Up Time for VDD to Reach Minimum Specified Voltage (Power Ramp is Monotonic) 0.05 – 500 ms TA Ambient Temperature (Commercial) VDD Description Ambient Temperature (Industrial) 0 – 70 °C –40 – 85 °C DC Electrical Characteristics Parameter IDD[3] Description Operating Supply Current Min Typ Max Unit VDD = 3.465 V, CLK = 150 MHz, output terminated Condition – – 150 mA VDD = 2.625 V, CLK = 150 MHz, output terminated – – 145 mA VOH LVPECL High Output Voltage VDD = 3.3 V or 2.5 V, RTERM = 50 to VDD – 2.0 V VDD – 1.15 – VDD – 0.75 V VOL LVPECL Low Output Voltage VDD = 3.3 V or 2.5 V, RTERM = 50 to VDD – 2.0 V VDD – 2.0 – VDD – 1.625 V VOD1 LVPECL Output Voltage Swing (VOH – VOL) VDD = 3.3 V or 2.5 V, RTERM = 50 to VDD – 2.0 V 600 – 1000 mV VOD2 LVPECL Output Voltage Swing (VOH – VOL) VDD = 2.5 V, RTERM = 50 to VDD – 1.5 V 500 – 1000 mV VOCM LVPECL Output Common Mode Voltage ((VOH + VOL)/2) VDD = 2.5 V, RTERM = 50 to VDD – 1.5 V 1.2 – – V VIH Input High Voltage 0.7 × VDD – – V – – 0.3 × VDD V – – 115 A VIL Input Low Voltage IIH0 Input High Current, FS0 pin IIH1 Input High Current, FS1 pin Input = VDD – – 10 A IIL0 Input Low Current, FS0 pin Input = VSS –50 – – A IIL1 Input Low Current, FS1 pin Input = VSS –20 – – A Input = VDD Notes 1. The voltage on any input or IO pin cannot exceed the power pin during power up. 2. Simulated. The board is derived from the JEDEC multilayer standard. It measures 76 × 114 × 1.6 mm and has 4-layers of copper (2/1/1/2 oz.). The internal layers are 100% copper planes, while the top and bottom layers have 50% metalization. No vias are included in the model. 3. IDD includes ~24 mA of current that is dissipated externally in the output termination resistors. Document Number: 001-53149 Rev. *D Page 3 of 10 [+] Feedback CY2XF34 DC Electrical Characteristics (continued) Parameter Description CIN0[4] CIN1[4] Condition Min Typ Max Unit Input Capacitance, FS0 pin – 15 – pF Input Capacitance, FS1 pin – 4 – pF Min Typ Max Unit 50 – 690 MHz AC Electrical Characteristics The AC Electrical Characteristics for part CY2XF34 are as follows [4] Parameter Description Condition FOUT Output Frequency[5] FSC Frequency Stability, commercial devices[6] TA = 0 °C to 70 °C – – ±35 ppm FSI Frequency Stability, industrial devices[6] TA = –40 °C to 85 °C – – ±55 ppm AG Aging, 10 years – – ±15 ppm TDC Output Duty Cycle F 450 MHz, measured at zero crossing 45 50 55 % F > 450 MHz, measured at zero crossing 40 50 60 % 0.2 0.4 1.0 ns TR, TF Output Rise and Fall Time 20% and 80% of full output swing TLOCK Startup Time Time for CLK to reach valid frequency measured from the time VDD = VDD(min) – – 10 ms TLFS Re-lock Time Time for CLK to reach valid frequency from FS0 or FS1 pin change – – 10 ms TJitter() RMS Phase Jitter (Random) fOUT = 106.25 MHz (12 kHz–20 MHz) – 1 – ps Typical Output Characteristics Figure 2. 2.5V Supply and Termination to VDD–1.5 V, minimum VDD and maximum TA 0.9 1.40 0.8 0.7 VOCM (V) Swing (V) 1.35 0.6 1.30 1.25 0.5 1.20 0.4 0 100 200 300 400 Frequency (MHz) 500 600 700 0 100 200 300 400 500 600 700 Frequency (MHz) Notes 4. Not 100% tested, guaranteed by design and characterization. 5. This parameter is specified in CyberClocks Online software. 6. Frequency stability is the maximum variation in frequency from F0. It includes initial accuracy, plus variation from temperature and supply voltage. Document Number: 001-53149 Rev. *D Page 4 of 10 [+] Feedback CY2XF34 Figure 3. 2.5 V Supply and Termination to VDD–2 V, minimum VDD and maximum TA 0.9 0.90 0.8 0.7 VOCM (V) Swing (V) 0.85 0.6 0.80 0.75 0.5 0.4 0.70 0 100 200 300 400 500 600 700 0 100 200 Frequency (MHz) 300 400 500 600 700 Frequency (MHz) Figure 4. 3.3 V Supply and Termination to VDD–2 V, minimum VDD and maximum TA 0.9 1.60 0.8 0.7 VOCM (V) Swing (V) 1.55 0.6 1.50 1.45 0.5 0.4 1.40 0 100 200 300 400 Frequency (MHz) Document Number: 001-53149 Rev. *D 500 600 700 0 100 200 300 400 500 600 700 Frequency (MHz) Page 5 of 10 [+] Feedback CY2XF34 Switching Waveforms Figure 5. Output DC Parameters VA CLK VOD VOCM = (VA + VB)/2 CLK# VB Figure 6. Duty Cycle Timing CLK TDC = CLK# TPW TPERIOD TPW TPERIOD Figure 7. Output Rise and Fall Time CLK# CLK 80% 80% 20% 20% TR TF Termination Circuits Figure 8. LVPECL Termination VDD - 2V or VDD - 1.5V (VDD = 2.5V) VDD - 2V (VDD = 3.3V) CLK# Document Number: 001-53149 Rev. *D CLK BUF BUF CLK CLK# Page 6 of 10 [+] Feedback CY2XF34 Ordering Information Part Number Configuration Package Description Product Flow Pb-Free CY2XF34FLXCT Field Programmable 6-pin Ceramic LCC SMD - Tape and Reel Commercial, 0 °C to 70 °C CY2XF34FLXIT Field Programmable 6-pin Ceramic LCC SMD - Tape and Reel Industrial, –40 °C to 85 °C Possible Cofigurations Some product offerings are factory programmed customer specific devices with customized part numbers.The Possible Configurations table shows the available device types, but not complete part numbers. Contact your local Cypress FAE of Sales Representative for more information. Part Number [7] Configuration Package Description Product Flow Pb-Free CY2XF34LXCxxxT Factory Configured 6-pin Ceramic LCC SMD - Tape and Reel Commercial, 0 °C to 70 °C CY2XF34LXIxxxT Factory Configured 6-pin Ceramic LCC SMD - Tape and Reel Industrial, –40 °C to 85 °C Ordering Code Definitions CY 2X F34 F L X X xxx T T = Tape and Reel Customer Specific Code Temperature Range: X = C or I C = Commercial; I = Industrial Pb-free Package type: 6-pin Ceramic LCC SMD Configuration: F = Field Programmable; blank = Factory Configured Part identifier Family Company ID: CY = Cypress Note 7. “xxx” is a factory assigned code that identifies the programming option.For more details, contact your local Cypress FAE or Sales Representative. Document Number: 001-53149 Rev. *D Page 7 of 10 [+] Feedback CY2XF34 Package Drawings and Dimensions Figure 9. 6-pin 3.2 × 5.0 mm Ceramic LCC LZ06A 001-10044 *A Document Number: 001-53149 Rev. *D Page 8 of 10 [+] Feedback CY2XF34 Acronyms Document Conventions Acronym Description Units of Measure CMOS complementary metal oxide semiconductor ESD electrostatic discharge °C degree Celsius FAE Field Application Engineer µA micro Amperes I/O input/output mA milli Amperes OTP One Time Programmable mm milli meter PCB printed circuit board ms milli seconds PLL phase-locked loop mV milli Volts SMD Surface Mounted Devices MHz Mega Hertz ns nano seconds pF pico Farad ps pico seconds ppm parts per million V Volts W Watts % percent ohms Document Number: 001-53149 Rev. *D Symbol Unit of Measure Page 9 of 10 [+] Feedback CY2XF34 Document History Page Document Title: CY2XF34 High Performance LVPECL Oscillator with Frequency Margining - Pin Control Document Number: 001-53149 Revision ECN Orig. of Change Submission Date Description of Change ** 2704379 KVM/PYRS 05/11/09 New datasheet *A 2734005 WWZ 07/09/09 Post to external web *B 2761926 KVM 09/10/09 Revised maximum output rise and fall times Added Absolute Maximum Conditions table *C 2898472 KVM 03/24/2010 Moved ‘xxx’ parts to Possible Configurations table. Updated package diagram. *D 3199911 BASH 03/18/2011 Changed status from Preliminary to Final. Added Ordering Code Definitions. Added Acronyms and Units of Measure. Updated in new template. Sales, Solutions, and Legal Information Worldwide Sales and Design Support Cypress maintains a worldwide network of offices, solution centers, manufacturer’s representatives, and distributors. To find the office closest to you, visit us at cypress.com/sales. Products Automotive Clocks & Buffers Interface Lighting & Power Control PSoC Solutions cypress.com/go/automotive cypress.com/go/clocks psoc.cypress.com/solutions cypress.com/go/interface PSoC 1 | PSoC 3 | PSoC 5 cypress.com/go/powerpsoc cypress.com/go/plc Memory Optical & Image Sensing PSoC cypress.com/go/memory cypress.com/go/image cypress.com/go/psoc Touch Sensing cypress.com/go/touch USB Controllers cypress.com/go/USB Wireless/RF cypress.com/go/wireless © Cypress Semiconductor Corporation, 2009-2011. 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Document Number: 001-53149 Rev. *D Revised March 21, 2011 Page 10 of 10 All products and company names mentioned in this document may be the trademarks of their respective holders. [+] Feedback