PLL701-13

PLL701-13 PLL | Alldatasheet

Document overview

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Technical content

Low EMI Spread Spectrum Multiplier Clock 47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 08/12/04 Page

FEATURES

Spread Spectrum Clock Generator with selectable multiplier ( 1x, 2x and 4x ). Output frequency ranges: 24MHz to 240MHz. Selectable Down Spread Modulation. TTL/CMOS compatible outputs. 3.3V Operating Voltage. Low short-term jitter. Available in 8-Pin 150mil SOIC.

DESCRIPTION

The PLL701-13 is a Spread Spectrum Clock Generator designed for the purpose of reducing EMI in high-speed digital systems. The selectable Down Spread modulation magnitude (see table below) permits EMI reduction without over-clocking the output. The device operates over a very wide range of input frequencies and provides 1x to 4x modulated clock outputs. PIN CONFIGURATION Note: v: 30kΩ Internal Pull down ^: 30kΩ Internal Pull up. OUTPUT CLOCK (FOUT) SELECTION Spread Spectrum Modulation FIN Range (MHz) FOUT Frequency Magnitude 24 - 60 -1.5% 24 - 60 -2.0% 24 - 60 -2.5% 24 - 60 -3.0% 24 - 60 -0.5% 24 - 60 -1.0% 24 - 60 -1.5% 24 - 60 -2.0% 24 - 60 -2.5% 24 - 60 -3.0% 24 - 60 -0.5% 24 - 60 -1.0% 60 - 120 -0.5% 60 - 120 -1.0% 60 - 120 -1.5% 60 - 120 Fin / 1024 -2.0% PLL701-13 FIN S2^ S1^ S0v VDD FOUT GND S3v FIN = 24 ~ 120 Mhz

Low EMI Spread Spectrum Multiplier Clock 47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 08/12/04 Page 2 BLOCK DIAGRAM PIN DESCRIPTIONS Name Number Type I Input Clock Frequency, 24MHz to 120MHz. I Digital control input to select multiplication factor and SST modulation amplitude. Has internal pull-up. I Digital control input to select multiplication factor and SST modulation amplitude. Has internal pull-up. I Digital control input to select multiplication factor and SST modulation amplitude. Has internal pull-down. GND P Ground. FOUT O SST Modulated Clock Frequency Output. The frequency before modulation is synthesized by multiplying the input frequency by 1X, 2X, or 4X, depending on S(0:3). I Digital control input to select multiplication factor and SST modulation amplitude. Has internal pull-down. VDD P 3.3V Power Supply. FOUT FIN S(0:3) PLL SST Control Logic

Low EMI Spread Spectrum Multiplier Clock 47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 08/12/04 Page 3 ELECTRICAL SPECIFICATIONS 1. Absolute Maximum Ratings PARAMETERS SYMBOL MIN. MAX. UNITS Supply Voltage VDD 4.6 V Input Voltage, dc VI -0.5 VDD+0.5 V Output Voltage, dc VO -0.5 VDD+0.5 V Storage Temperature TS -65 150 Ambient Operating Temperature* TA -40 Junction Temperature TJ 125 Lead Temperature (soldering, 10s) 260 ESD Protection, Human Body Model 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. DC/AC Specifications PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS Supply Voltage VDD 2.97 3.63 V Input High Voltage VIH 0.7* VDD V Input Low Voltage VIL 0.3* VDD V Input High Current IIH 100 µA Input Low Current IIL 100 µA Output High Voltage VOH IOH=5mA, VDD =3.3V 2.4 Output Low Voltage VOL IOL=6mA, VDD =3.3V 0.4 Input Frequency FIN 120 MHz Maximum interruption of FIN none µs Input Capacitance Cin1 pF Pull-up Resistor Rpu PIN 2, 3 kΩ Pull-down Resistor Rpd PIN 4, 7 kΩ Short Circuit Current Isc mA 3.3V Dynamic Supply Current ICC No Load mA

Low EMI Spread Spectrum Multiplier Clock 47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 08/12/04 Page 4 3. TIMING CHARACTERISTICS PARAMETERS SYMBOL CONDITIONS MIN. TYP. MAX. UNITS Rise Time Tr Measured at 0.8V ~ 2.0V @ 3.3V 0.8 0.95 1.1 ns Fall Time Tf Measured at 2.0V ~ 0.8V @ 3.3V 0.78 0.85 0.9 ns Output Duty Cycle DT Input to Output Delay ns Cycle to Cycle Jitter Tcyc-cyc Over output frequency range @ 3.3V 100 ps FUNCTIONAL DESCRIPTION Selectable spread spectrum and modulation rates The PLL701-13 provides selectable multiplication factor, as well as selectable modulation rate. Selection is made by connecting pins 2 (S2), 3 (S1), 4 (S0), and 7 (S3) to a logical “zero” or “one”, according to the output clock selection table on page 1. Default values for S(0:3) through internal pull-up and pull-down resistor Selection pins S0 and S3 have an internal pull-down resistor of 30kΩ, pins 2 and 3 (S1 and S2) have an internal pull-up resistor of 30kΩ. This internal pull-down (or pull-up) resistor will pull the input value to a logical “zero” (or “one” respectively) by default, i.e. when the pin is not connected to GND (VDD respectively). In order to override the internal pull-up (pull-down), the pin has to be connected to VDD (GND respectively).

Low EMI Spread Spectrum Multiplier Clock 47745 Fremont Blvd., Fremont, California 94538 Tel (510) 492-0990 Fax (510) 492-0991 www.phaselink.com Rev 08/12/04 Page 5

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. 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 PLL701-13 S C Order Number Marking Package Option PLL701-13SC-R P701-13SC SOIC -Tape and Reel PLL701-13SC P701-13SC SOIC –Tube PART NUMBER TEMPERATURE C=COMMERCIAL I=INDUSTRIAL PACKAGE TYPE S=SOIC C L A

8 PIN Narrow SOIC ( mm )

Min. Max. A 1.47 1.73 0.10 0.25 B 0.33 0.51 C 0.19 0.25 D 4.80 4.95 E 3.80 4.00 H 5.80 6.20 L 0.38 1.27 e

1.27 BSC

E H D e B