PLL501-21/23 VCXO Clock Generator IC FEATURES • • • • • On-chip tunable voltage-controlled crystal oscillator circuitry (VCXO) allows precise system frequency tuning (pull range 200ppm minimum). VCXO tuning range: 0-3.3V. Uses inexpensive fundamental-mode crystals. Integrated phase-locked loop (PLL) multiplies VCXO frequency to the higher system frequencies needed. 3.3V supply voltage. Small circuit board footprint (8-pin 0.150’’ SOIC). Custom frequency selections available. 12mA output drives capability at TTL level. 1 VDD 2 VIN 3 GND 4 8 XOUT 7 GND 6 VDD 5 CLK Table 1: Crystal / Output Frequencies DESCRIPTIONS The PLL501-21/23 is a monolithic low Jitter, high performance CMOS clock generator IC. It has a circuitry that implements a voltage-controlled crystal oscillator when an external resonator (nominally 13.5MHz) is attached. The VCXO allows device frequencies to be precisely adjusted for matching requirements. This product is ideal for Set-Top Box and multimedia synthesizer applications. XIN PLL501-XX • • • PIN CONFIGURATION DEVICE F XIN (MHz) CLK (MHz) PLL501-21 13.5 27 PLL501-23 13.5 54 Note: Contact PhaseLink for custom PLL Frequencies BLOCK DIAGRAM XIN VCXO XOUT PLL Output Buffer CLK VIN 47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991 Rev 01/15/01 Page 1 PLL501-21/23 VCXO Clock Generator IC PIN DESCRIPTIONS Name Number Type Description XIN 1 I Crystal input connection (parallel mode crystal, C L = 14pF). VDD 2 P 3.3V Power Supply. VIN 3 I Voltage Input for VCXO Frequency Control. GND 4 P Ground for PLL Core. CLK 5 O Clock Output. VDD 6 P 3.3V Power Supply. GND 7 P Ground. XOUT 8 O Crystal connection. 47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991 Rev 01/15/01 Page 2 PLL501-21/23 VCXO Clock Generator IC ELECTRICAL SPECIFICATIONS 1. Absolute Maximum Ratings PARAMETERS SYMBOL Supply Voltage MIN. V DD MAX. UNITS 7 V Input Voltage, dc VI V SS - 0.5 V DD + 0.5 V Output Voltage, dc VO V SS - 0.5 V DD + 0.5 V Storage Temperature TS -65 150 °C Ambient Operating Temperature TA 0 70 °C Junction Temperature TJ 125 °C 260 °C 2 KV Lead Temperature (soldering, 10s) Input Static Discharge Voltage Protection 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. DC Electrical Specifications PARAMETERS SYMBOL CONDITIONS f XTA = 13.5MHz Supply Current, Dynamic, with Loaded Outputs I DD Operating Voltage V DD Output High Voltage V OH I OH = -12mA Output Low Voltage V OL I LO = 12mA Output High Voltage at CMOS level V OHC I OH = -4mA Operating Supply Current I DD MIN. TYP. MAX. 20 Ouput load of 4pF 3.13 mA 3.47 2.4 V DD – 0.4 Short Circuit Current VIN, VCXO Control Voltage 47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991 0 V V 0.4 No Load UNITS V V 7 mA ±50 mA 3.3 V Rev 01/15/01 Page 3 PLL501-21/23 VCXO Clock Generator IC 3. AC Electrical Specifications PARAMETERS SYMBOL CONDITIONS MIN. Input Crystal Frequency TYP. MAX. UNITS 13.5 Input Crystal Accuracy MHz ±30 ppm Output Clock Rise Time tr 0.8V ~ 2.0V 1.5 ns Output Clock Fall Time tf 2.0V ~ 0.8V 1.5 ns 55 % Output Clock Duty Cycle Measured @ 1.4V Max Absolute Jitter Short Term 45 Short Circuit Current CLK output pullability 0V≤VIN≤3.3V 50 100 ps ±50 mA ±100 ppm 4. Voltage Control Crystal Oscillator PARAMETERS PLL Stabilization Time * VCXO Stabilization Time * SYMBOL MIN. TYP. MAX. UNITS T PLLSTB From VCXO stable 500 us T VCXOSTB From power valid 10 ms Output Frequency Synthesis Error Crystal Resonator Frequency CONDITIONS (Unless otherwise noted in Frequency Table) f XTAL Parallel Fundamental Mode 10 13.5 ±30 ppm 15 MHz Crystal Loading Capacitance C L(xtal) V XTUNE =1.65V 14 pF Crystal Resonator Motional Capacitance C 1(xtal) At cut 25 fF f XTA = 13.5MHz; C L =14pF; C MOT =25fF 200 ppm 100 ppm/V VCXO Tuning Range VCXO Tuning Characteristic Note: Parameters denoted with an asterisk ( * ) represent nominal characterization data and are not production tested to any specific limits. External Components The PLL501-21/23 requires a minimum number of external components for proper operation. A decoupling capacitor of 0.01µF should be connected between VDD and GND on pin2 and 4, as close to the PLL501-21/23 as possible. A series termination resistor of 33Ω may be used for the clock output. The input crystal must be connected as close to the chip as possible. The input crystal should be a parallel mode, pullable, AT cut, 13.5MHz, with 14pF load capacitance and a C0/C1 ratio of maximum 250. Consult PhaseLink for recommended suppliers. 47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991 Rev 01/15/01 Page 4 PLL501-21/23 VCXO Clock Generator IC PACKAGE INFORMATION 8 PIN Narrow SOIC ( mm ) SOIC Symbol Min. Max. A 1.55 1.73 A1 B 0.15 0.35 0.18 0.49 C D 0.19 4.80 0.25 4.98 E H 3.81 5.84 3.99 6.20 L e 0.41 0.89 1.27 BSC E H D A A 1 C L B e ORDERING INFORMATION For part ordering, please contact our Sales Department: 47745 Fremont Blvd., Fremont, CA 94538, USA Tel: (510) 492-0990 Fax: (510) 492-0991 PART NUMBER The order number for this device is a combination of the following: Device number, Package type and Operating temperature range PLL501-21 S C PART NUMBER TEMPERATURATRE C=COMMERCIAL M=MILITARY I=INDUSTRAL PACKAGE TYPE S=SOIC 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. 47745 Fremont Blvd., Fremont, California 94538 TEL (510) 492-0990 FAX (510) 492-0991 Rev 01/15/01 Page 5