P521-23 PLL | Alldatasheet
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Low Phase Noise PECL VCXO (100MHz to 200MHz) 47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991 [www.phaselink.com] Rev 7/28/04 Page 2 PAD ASSIGNMENT AND DESCRIPTION Pin # Name
Description
Oscillator Off Selection input pad. When low, turns off the oscillator when output is disabled. When high (default), oscillator running when output is disabled. Internal pull-up GNDOSC GND connection for oscillator circuitry. VCON Control Voltage input. Use this pin to change the output frequency by varying the applied Control Voltage. XIN Crystal oscillator input pin. XOUT Crystal oscillator output pin. OECTRL OE input pad. See table on page 1. DNC Do Not Connect. GND Ground connection. GND Ground connection. Q PECL Output. QBAR PECL complementary output. VDDBUF VDD connection for output buffer circuitry. VDDBUF should be separately decoupled from other VDDs whenever possible. VDDANA VDD connection for analog circuitry. VDDANA should be separately decoupled from other VDDs whenever possible. OESEL Selector input to choose the OE control logic. See table on page 1. BUFZSEL Output impedance selector VDDOSC VDD connection for oscillator circuitry. VDDOSC should be separately decoupled from other VDDs whenever possible.
Low Phase Noise PECL VCXO (100MHz to 200MHz) 47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991 [www.phaselink.com] Rev 7/28/04 Page 3 ELECTRICAL SPECIFICATIONS 1. Absolute Maximum Ratings PARAMETERS SYMBOL MIN. MAX. UNITS Supply Voltage VDD 4.6 V Input Voltage, dc VI VSS-0.5 VDD+0.5 V Output Voltage, dc VO VSS-0.5 VDD+0.5 V Storage Temperature TS -65 150 Ambient Operating Temperature TA Junction Temperature TJ 125 Lead Temperature (soldering, 10s) 260 Input Static Discharge Voltage Protection 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. 2. Crystal Specifications PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS Crystal Resonator Frequency FXIN Parallel Fundamental Mode 100 200 MHz Crystal Loading Rating CL (xtal) VCON = 1.65V 5.0 pF Interelectrode Capacitance 3.5 pF Crystal Pullability C0/C1 (xtal) AT cut 250 Recommended ESR RE AT cut Ω 3. Voltage Control Crystal Oscillator PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS VCXO Stabilization Time * TVCXOSTB From power valid ms VCXO Tuning Range XTAL C0/C1 < 250 250* ppm CLK output pullability VCON = 1.65V ± 1.65V at room temperature ±125* ppm On-chip Varicaps control range VCON = 0 to 3.3V 3.3 – 8.8* pF Linearity VCXO Tuning Characteristic ppm/V VCON input impedance 2000 kΩ VCON modulation BW 0V ≤ VCON ≤ 3.3V, -3dB kHz Note: Parameters denoted with an asterisk (*) represent nominal characterization data and are not production tested to any specific limits.
Low Phase Noise PECL VCXO (100MHz to 200MHz) 47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991 [www.phaselink.com] Rev 7/28/04 Page 4 4. General Electrical Specifications PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS Supply Current (Loaded Outputs) IDD at 3.3V @ 155MHz mA Oscillator off ms Output valid after OE enabled Oscillator on ns Operating Voltage VDD 2.25 3.63 V Output Clock Duty Cycle @ Vdd – 1.3V (PECL) Short Circuit Current ±50 mA 5. Jitter specifications PARAMETERS CONDITIONS MIN. TYP. MAX. UNITS Period jitter RMS at 155MHz 2.5 Period jitter peak-to-peak at 155MHz At 155.52MHz, with capacitive decoupling between VDD and GND. Over 10,000 cycles 18.5 ps Accumulated jitter RMS at 155MHz 2.5 Accumulated jitter peak-to-peak at 155MHz At 155.52MHz, with capacitive decoupling between VDD and GND. Over 1,000,000 cycles. ps Random Jitter “RJ” measured on Wavecrest SIA 3000 2.5 ps Integrated jitter RMS at 155MHz Integrated 12 kHz to 20 MHz 0.25 0.35 ps Measured on Wavecrest SIA 3000 6. Phase noise specifications PARAMETERS FREQUENCY 10Hz 100Hz 1kHz 10kHz 100kHz 1MHz UNITS Phase Noise relative to carrier 155.52MHz -75 -100 -125 -140 -145 -150 dBc/Hz Note: Phase Noise measured at VCON = 0V
Low Phase Noise PECL VCXO (100MHz to 200MHz) 47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991 [www.phaselink.com] Rev 7/28/04 Page 5 7. PECL Electrical Characteristics PARAMETERS SYMBOL CONDITIONS MIN. MAX. UNITS Output High Voltage VOH VDD – 1.025 V Output Low Voltage VOL RL = 50 Ω to (VDD – 2V) (see figure) VDD – 1.620 V 8. PECL Switching Characteristics PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS Clock Rise Time tr @20/80% - PECL 0.6 1.5 ns Clock Fall Time tf @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
Low Phase Noise PECL VCXO (100MHz to 200MHz) 47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991 [www.phaselink.com] Rev 7/28/04 Page 6
PACKAGE INFORMATION
ORDERING INFORMATION
PhaseLink Corporation, reserves the right to make changes in its products or specifications, or both at any time without notice. The information furnished by Phaselink is believed to be accurate and reliable. However, PhaseLink 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: PhaseLink’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 PhaseLink Corporation. PART NUMBER The order number for this device is a combination of the following: Device number, Package type and Operating temperature range P521-23 D C Order Number Marking Package Option P521-23DC P521-23DC Die – Waffle Pack P521-23OC-R P521-23 OC TSSOP – Tape and Reel P521-23OC P521-23 OC TSSOP – Tube PART NUMBER TEMPERATURE C=COMMERCIAL C L A
16 PIN Narrow SOIC, TSSOP ( mm )
Min. Max. Min. Max. A 1.35 1.75 1.20 0.10 0.25 0.05 0.15 B 0.33 0.51 0.19 0.30 C 0.19 0.25 0.09 0.20 D 9.80 10.00 4.90 5.10 E 3.80 4.00 4.30 4.50 H 5.80 6.20
6.40 BSC
L 0.40 1.27 0.45 0.75 e
1.27 BSC
0.65 BSC
E H D e B PACKAGE TYPE D=Die O=TSSOP
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