MAX9491 19-3942 Rev 0 1/06 Factory-Programmable, Single PLL Clock Generator General Description Features The MAX9491 multipurpose clock generator is ideal for 5MHz to 35MHz for Crystal-Clock Reference communication applications. It offers a factory-program- 5MHz to 50MHz for a Driver Clock Reference mable PLL output that can be set to almost any frequency, ranging from 4MHz to 200MHz. The MAX9491 uses a One Fractional-N PLL with Buffered Output one-time-programmable (OTP) ROM to program the PLL 4MHz to 200MHz Output Frequency Range output. The MAX9491 also features an integrated volt- age-controlled crystal oscillator (VCXO) that is tuned by a Low RMS Jitter PLL (< 13ps) at 197 MHz DC voltage. The VCXO output is used as the PLL input. Integrated VCXO with 200ppm Tuning Range The VCXO has a wide 200ppm (typ) tuning range. The OTP on the MAX9491 is factory preset, based upon the Available in 14-Pin TSSOP and 20-Pin TQFN customer request. Contact the factory for samples with Packages preferred frequencies. +3.3V Supply The device operates from a 3.3V supply and is speci- fied over the -40C to +85C extended temperature -40C to +85C Temperature Range range. The MAX9491 is available in 14-pin TSSOP and 20-pin TQFN (5mm x 5mm) packages. Applications Ordering Information Telecommunications PIN- PKG PART TEMP RANGE PACKAGE CODE Data Networking Systems MAX9491ETP -40C to +85C 20 TQFN-EP** T2055-5 Home Entertainment Centers MAX9491EUD* -40C to +85C 14 TSSOP U14-2 SOHO *Future productcontact factory for availability. **EP = Exposed pad. Pin Configurations TOP VIEW 15 14 13 12 11 TOP VIEW X1 1 14 X2 V 16 10 GND DD I.C. 2 13 PD X2 17 9 I.C. I.C. 3 12 V X1 18 8 I.C. DD MAX9491 V 4 11 GND DD I.C. 19 7 I.C. MAX9491 TUNE 5 10 I.C. I.C. 20 6 I.C. GND 6 9 GND 12 3 4 5 CLK OUT 7 8 I.C. TSSOP TQFN (5mm x 5mm) Maxim Integrated Products 1 For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct at 1-888-629-4642, or visit Maxims website at www.maxim-ic.com. TUNE PD I.C. V DDA AGND V DD GND V DD GND CLK OUTFactory Programmable Single PLL Clock Generator ABSOLUTE MAXIMUM RATINGS V to GND...........................................................-0.3V to +4.0V Continuous Power Dissipation (T = +70C) DD A V to AGND ......................................................-0.3V to +4.0V 20-Lead TQFN (derate 21.3mW/C above +70C) ....2758mW DDA All Other Pins to GND ..................................-0.3V to V + 0.3V 14-Pin TSSOP (derate 9.1mW/C above +70C) ......796.8mW DD Short-Circuit Duration Storage Temperature Range .............................-65C to +150C (all LVCMOS outputs)..............................................Continuous Maximum Junction Temperature .....................................+150C ESD Protection (Human Body Model)..................................2kV Operating Temperature Range ...........................-40C to +85C Lead Temperature (soldering, 10s) .................................+300C Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. DC ELECTRICAL CHARACTERISTICS (V = V = +3.0V to +3.6V and T = -40C to +85C. Typical values at V = V = 3.3V, T = +25C, unless otherwise noted.) DD DDA A DD DDA A (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS LVCMOS INPUTS (PD, X1 as a reference INPUT CLK) Input High Level V 2.0 V V IH DD Input Low Level V 0 0.8 V IL High-Level Input Current I V = V 20 A IH IN DD Low-Level Input Current I V = 0 -20 A IL IN CLOCK OUTPUT (CLK OUT) V - DD Output High Level V I = -4mA V OH OH 0.6 Output Low Level V I = 4mA 0.4 V OL OL POWER SUPPLIES Digital Power-Supply Voltage V 3.0 3.6 V DD Analog Power-Supply Voltage V 3.0 3.6 V DDA Total Current for Digital and f = 45MHz, no load OUT I 10 mA DC Analog Supplies f = 13MHz IN Power-Down Current I 2 PD = low 60 A DC 2 MAX9491