PL560-48QC

Analog Frequency Multiplier PL560-XX VCXO Family PRODUCT DESCRIPTION The Analog Frequency Multiplier (AFM) is the industry’s first ‘Balanced Oscillator’ utilizing analog multiplication of the fundamental frequency (at double or quadruple frequency), combined with an attenuation of the fundamental of the reference crystal, without the use of a phase-locked loop (PLL), in CMOS technology. Micrel’s world’s best performing AFM products can achieve up to 800 MHz output frequency with little jitter or phase noise deterioration. In addition, the low frequency input crystal requirement makes the AFMs the most affordable high-performance timingsource in the market. PL560/5-xx family of products utilize low-power CMOS technology and are housed in Green / RoHS compliant 16-pin TSSOP, and 16-pin 3x3 QFN packages.              Non-PLL frequency multiplication Input frequency from 30-200 MHz Output frequency from 60-800 MHz Low phase noise and jitter (equivalent to fundamental crystal at the output frequency) Ultra-low jitter o RMS phase jitter < 0.25 ps (12kHz-20MHz) o RMS period jitter < 2.5 ps Low phase noise o -142 dBc/Hz @100kHz offset from 155.52 MHz o -150 dBc/Hz @10MHz offset from 155.52 MHz High linearity pull range (typ. 5%) +/- 120 PPM pullability VCXO Low input frequency eliminates the need for expensive crystals Differential output levels (PECL, LVDS), or single ended CMOS Single 3.3V, ±10% power supply Optional industrial temperature range (-40C to +85C) Available in 16-pin Green/RoHS compliant TSSOP, and 3x3 QFN packages FEATURES Figure 1: 2x AFM Phase Noise at 311.04MHz Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 11/04/11 Page 1 Analog Frequency Multiplier PL56X-XX VCXO Family L2X VCON OE XIN Oscillator Amplifier XOUT QBAR Frequency X2 Frequency X4 Q Only required in x4 designs L4X Figure 2: Block Diagram of VCXO AFM Figure 3 shows the period jitter histogram of the 2x Analog Frequency Multiplier at 311.04 MHz, while F igure 4 shows the very low rejection levels of sub-harmonics that correspond to the exceptionally low jitter performance. Figure 3: Period Jitter Histogram at 311.04 MHz Analog Frequency Multiplier (2x) with 155.52MHz crystal Figure 4: Spectrum Analysis at 311.04 MHz Analog Frequency Multiplier (2x) with sub-harmonics below –72 dBc OE LOGIC SELECTION OUTPUT OESEL 0 (Default) LVPECL 1 0 (Default) LVDS or LVCMOS 1 OE Output State 0 (Default) Enabled 1 Tri-state 0 Tri-state 1 (Default) Enabled 0 Tri-state 1 (Default) Enabled 0 (Default) Enabled 1 Tri-state OESEL and OE: Connect to VDD or leave floating to set to “1”, connect to GND to set to “0”. Internally set to default through pull-down / -up. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 11/04/11 Page 2 Analog Frequency Multiplier PL56X-XX VCXO Family PRODUCT SELECTION GUIDE FREQUENCY VERSUS PHASE NOISE PERFORMANCE Phase Noise at Frequency Offset From Carrier (dBc/Hz) Part Number Input Frequency Range (MHz) Analog Frequency Multiplication Factor Output Frequency Range (MHz) Output Type PL560-37 30 - 80 4 120 - 320 PL560-38 30 - 80 4 PL560-39 30 - 80 PL560-47 Carrier Freq. (MHz) 10Hz 100Hz 1kHz 10kHz 100kHz 1MHz 10MHz LVCMOS 155.52 -50 -82 -110 -128 -142 -148 -150 120 - 320 LVPECL 155.52 -50 -82 -110 -128 -142 -148 -150 4 120 - 320 LVDS 155.52 -50 -82 -110 -128 -142 -148 -150 30 - 80 2 60 - 160 LVCMOS 155.52 -65 -95 -122 -138 -142 -148 -149 PL560-48 30 - 80 2 60 - 160 LVPECL 155.52 -65 -95 -122 -138 -142 -148 -149 PL560-49 30 - 80 2 60 - 160 LVDS 155.52 -65 -95 -122 -138 -142 -148 -149 PL560-68 75 - 200 2 150 - 400 LVPECL 311.04 -60 -85 -112 -135 -142 -150 -151 PL560-69 75 - 200 2 150 - 400 LVDS 311.04 -60 -85 -112 -135 -142 -150 -151 Phase noise was measured using Agilent E5500. FREQUENCY VERSUS JITTER, AND SUB-HARMONIC PERFORMANCE Part Number RMS Period Jitter (ps) Peak to Peak RMS RMS Phase Jitter Period Jitter Accumulated 12kHz to 20MHz Spectral Specifications / Sub-harmonic Content (dBc), Output (ps) (L.T.) Jitter (ps) (ps) Frequency (MHz) Freq. Carrier @ @ @ @ @ @ (MHz) Min Typ Max Min Typ Max Min Typ Max Min Typ Max Freq. -75% -50% -25% +25% +50% +75% (Fc) (Fc) (Fc) (Fc) (Fc) (Fc) (Fc) PL560-37 155 2.5 3 18 20 3 0.25 155.52 -75 -62 -65 -75 PL560-38 155 2.5 3 18 20 3 0.25 155.52 -75 -62 -65 -75 PL560-39 155 2.5 3 18 20 3 0.25 155.52 -75 -62 -65 -75 PL560-47 155 2.5 3 18 20 3 0.25 155.52 -68 -68 PL560-48 155 2.5 3 18 20 3 0.25 155.52 -68 -68 PL560-49 155 2.5 3 18 20 3 0.27 155.52 -68 -68 PL560-68 311 2.5 3 18 20 3 0.18 311.04 -72 -85 PL560-69 311 2.5 3 18 20 3 0.18 311.04 -72 -85 Note: Wavecrest data 10,000 hits. No filtering was used in jitter calculations. Agilent 5500 was used for phase jitter measurements. Spectral specifications were obtained using Agilent E7401A. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 11/04/11 Page 3 Analog Frequency Multiplier PL56X-XX VCXO Family CRYSTAL SPECIFICATIONS AND BOARD LAYOUT CONSIDERATIONS BOARD LAYOUT CONSIDERATIONS AFM IC AFM IC XTAL XIN (Pin # 4 ) XIN (Pin # 4 ) XTAL XOUT (Pin # 5) XOUT (Pin # 5) Ceramic SMD To minimize parasitic effects, and improve performanc e:  Place the crystal as close as possible to the IC.  Make the board traces that are connected to the crystal pins symmetrical.  The board trace symmetry is important, as it reduces the negative parasitic effects to produce a clean frequency multiplication with low jitter. Parasitic effects reduce frequency pulling of the VCXO and increase jitter. CRYSTAL SPECIFICATIONS & TUNING PERFORMANCE CRYSTAL SPECIFICATIONS PART NUMBER CRYSTAL CL (xtal) RESONATOR MODE FREQUENCY CONDITYP (FXIN) TIONS PL565-08 At FundaPL560-09 75 to 200MHz VCON = mental PL560-68/69 1.65V PL56037/38/39 PL56047/48/49 TUNING PERFORMANCE 30 to 80MHz At FundaVCON = mental 1.65V 5pF 5pF ESR (RE) MAX CRYSTAL TUNING (Typical) CRYSTAL FREQ (MHz) C0 C1 C0/C1 VC: 1.65V 0V VC: 1.65V 3.3V 155.52 3.0pF 12.2fF 245 -145 ppm +108 ppm 155.52 1.8pF 5.7fF 316 -134 ppm +87 ppm 30.72 2.8pF 12.4fF 228 -167ppm +176 ppm 30.72 4.5pF 19.1fF 236 -163 ppm +167 ppm 38.88 5.1pF 20.9fF 242 -131 ppm +98 ppm 38.88 5.3pF 25.6fF 207 -157 ppm +141 ppm 77.76 2.0pF 6.7fF 305 -92 ppm +110 ppm 30Ω 30Ω Note: Non specified parameters can be chosen as standard values from crystal suppliers. CL ratings larger than 5pF require a crystal frequency adjustment. Request detailed crystal specifications from Micrel. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 11/04/11 Page 4 Analog Frequency Multiplier PL56X-XX VCXO Family VOLTAGE CONTROL SPECIFICATION PARAMETERS VCXO Stabilization Time SYMBOL T VCXOSTB CONDITIONS MIN. From power valid VCXO Tuning Range XTAL C0 /C 1