PL565-08QC-R

(Prelim inary ) Analog Frequency Multiplier PL560/565-08 VCXO Family PRODUCT DESCRIPTION FEATURES The Analog Frequency Multiplier (AFM) is the industry’s first ‘Balanced Oscillator’ utilizing analog multiplication of the fundamental frequency (at 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 AFM the most affordable high-performance timingsource in the market. PL560-08 and PL565-08 products utilize low-power CMOS technology and are housed in Green / RoHS compliant 16-pin TSSOP, and 16-pin 3x3 QFN packages. 12 14 VDDOSC 15 L2X 16 GNDBUF Q 10 9 P560/5-08 1 2 3 4 8 VDDOSC 7 L4X 6 OE 5 XOUT PL560-08 / PL565-08 BLOCK DIAGRAM XIN OESEL 11 VCON 13 OSCOFF SEL GNDOSC VDDANA QBAR VDDBUF QFN PACKAGE PIN-OUT  Non-PLL frequency multiplication by 4.  Input frequency from 62.5-200 MHz  Output frequency o PL560-08: 250-600MHz o PL565-08: 600-800MHz  Low phase noise and jitter (equivalent to fundamental crystal at the output frequency)  Ultra-low jitter o RMS phase jitter < 100 fs (12kHz-20MHz) o RMS random period jitter < 2 ps  Low phase noise o -142 dBc/Hz @100kHz offset from the carrier o -150 dBc/Hz @10MHz offset from the carrier  High linearity pull range (typ. 5%)  VCXO, set pullability ±100ppm ~ ±200ppm  Low input frequency eliminates the need for expensive crystals  Differential output levels: LVPECL  Single 3.3V, ±10% power supply  Optional industrial temperature range (-40C to +85C)  Available in 16-pin Green/RoHS compliant 3x3 QFN packages and as die. L2X VCON OE XIN Oscillator Amplifier XOUT Frequency X2 Frequency X4 QBAR Q L4X Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 6/22/11 Page 1 (Prelim inary ) Analog Frequency Multiplier PL560/565-08 VCXO Family DIE SPECIFICATIONS 16 17 15 14 Chip size, active area 13 12 19 11 20 1.385mm Y 0,0 1 2 3 PAD size 80µm x 80µm 9 Scribe Line Dimension X = 80µm Y = 80µm 8 Chip Base GND level X 7 22 200 ± 20µm 10 Die ID 21 1.414mm x 1.385mm Chip thickness 4 6 5 SCRIBE LINE 18 Die ID: PL560-08DC PL565-08DC C561A 3222222 C561A 7777722 SCRIBE LINE PAD/PIN ASSIGNMENT AND DESCRIPTION (The X/Y coordinates indicate pad centers) Name L4X VDDOSC GNDANA GNDANA GNDBUF GNDBUF GNDBUF PECLB PECL VDDBUF VDDBUF VDDANA N.C. OESEL VDDOSC L2X OSCOFFSEL GNDOSC VCON XIN XOUT OE Pad Assignment* Pad # X (µm) Y (µm) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 -352 -183 +15 +144 +292 +469 +502 +502 +502 +502 +571 +571 +377 +183 -57 -214 -410 -572 -572 -572 -572 -572 -557 -557 -557 -557 -557 -557 -365 -215 -54 +79 +236 +413 +554 +554 +554 +554 +554 +554 +394 +199 -309 -521 QFN Pin # Type 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6 Description I P P P P P P O O P P P External inductor connection VDD connection GND connection GND connection GND connection GND connection GND connection LVPECL complementary output LVPECL output VDD connection VDD connection VDD connection I P I I P I I O I OE style selection pin VDD connection External inductor connection Oscillator Off selection pin GND connection Control voltage input Crystal Input pad Crystal Output pad Output Enable input * Note: Pad coordinates referenced to the center of the die. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 6/22/11 Page 2 (Prelim inary ) Analog Frequency Multiplier PL560/565-08 VCXO Family AFM Phase Noise at 491.52MHz, using 122.88MHz crystal AFM Spectrum at 491.52MHz, using 122.88MHz crystal The analog frequency multiplication preserves the low phase noise of the quartz crystal oscillator while keeping unwanted sub harmonics from the multiplication at very low levels. Sub harmonics appear only at large distance from the carrier, far outside the loop bandwidth of a PLL that uses the AFM signal to multiply up further to a multiple GHz network clock. This means the impact of the sub harmonics on the application is negligible. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 6/22/11 Page 3 (Prelim inary ) Analog Frequency Multiplier PL560/565-08 VCXO Family PHASE NOISE PERFORMANCE Part Number Input Freq. Range (MHz) Output Freq. Range (MHz) PL560-08 62.5 - 150 250 - 600 10 Hz 100 Hz 1 kHz 10 kHz 100 kHz 1 MHz 10 MHz Phase Jitter 12KHz ~ 20MHz (ps) -64 -96 -123 -135 -141 -150 -155 0.05 -56 -87 -113 -134 -143 -149 -153 0.04 Phase Noise at Frequency Offset From Carrier (dBc/Hz) Carrier Freq. (MHz) 491.52 PL565-08 150 - 200 600 - 800 622.08 Phase noise was measured using Agilent E5052B. SUB-HARMONIC PERFORMANCE Part Number Input Output Frequency Frequency (MHz) (MHz) Spectral Specifications / Sub-harmonic Content (dBc), Freq. (MHz) Carrier Freq. (Fc) @ -75% (Fc) @ -50% (Fc) @ -25% (Fc) @ +25% (Fc) @ +50% (Fc) @ +75% (Fc) PL560-08 122.88 491.52 491.52 -60 -40 -70 -70 -40 -70 PL565-08 155.52 622.08 622.08 -60 -40 -40 -40 -40 -50 Note: Spectral specifications were obtained using Agilent E7401A AFM MULTIPLYING TECHNIQUE The analog frequency multiplication is achieved through a “squaring” operation. The math is as follows: SIN²(x) = 0.5 - 0.5×COS(2x) A very important property of this processing is that the result is a pure sine wave with double frequency. In theory there are no sub harmonics but in practice the squaring operation is not perfect and a low level of sub harmonics is present anyway. The key is that the resulting sub harmonics are very low and simple filtering with o nly one inductor per squarer is adequate for excellent performance. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 6/22/11 Page 4 (Prelim inary ) Analog Frequency Multiplier PL560/565-08 VCXO Family AFM DIE APPLICATION CIRCUIT A 7x5mm ceramic substrate was designed to assemble and operate the AFM die at optimum performance: VDD VCON PECLB PECL OE GND Substrate part number: Kyocera KD-VB0F48 Please see PL560-08DC and PL565-08DC Tuning Assistant documents for passive component values. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 6/22/11 Page 5 (Prelim inary ) Analog Frequency Multiplier PL560/565-08 VCXO Family AFM QFN PACKAGE APPLICATION CIRCUIT RECOMMENDED PCB LAYOUT  Avoid ground planes underneath the crystal and inductor traces to limit parasitic capacitance.  Add bypass capacitor close to VDDBUF pin.  Avoid bypass capacitors near VDDOSC pins to lower cross-talk of unwanted frequencies.  L1X(a,b) can be used to increase the VCXO pulling range. Using a ferrite core inductor limits the oscillation amplitude which can have a positive effect on phase noise.  L2X and L4X tune the frequency multiplier tank circuits. They need to be wire wound inductors with high Q-factor, preferably >20.  The large center pad is the “thermal relief” pad and can be connected to ground. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 6/22/11 Page 6 (Prelim inary ) Analog Frequency Multiplier PL560/565-08 VCXO Family INDUCTOR VALUE OPTIMIZATION The required inductor values for the best performance depend on the operating frequency, and the board layout or module specifications. The listed values in this datasheet are based on the calculated parasitic values fr om Micrel’s evaluation board design. These inductor values provide the user with a starting point to determine the optimum inductor values. Additional fine -tuning may be required to determine the optimal solution. The inductor is recommended to be a hi gh Q small size 0402 or 0603 SMD component, and must be placed between L2X / L4X and adjacent VDDOSC pin. Place inductor as close to the IC as possible to minimize parasitic effects and to maintain inductor Q. To assist with the inductor value optimization, Micrel has developed AFM “Tuning Assistant” documents. You can download these documents from Micrel’s web site (www.micrel.com). The documents consist of tables with recommended inductor values for certain output frequency ranges. Figure 10: Diagram Representation of the Related System Inductance and Capacitance DIE SIDE - Cinternal at L2X = 7.625 pF , at L4X = 6.25 pF - Cpad = 1.0 pF, Bond pad and its ESD circuitry - C11 = 0.4 pF, The following amplifier stage PCB side - LWB1 = 2 nH, (2 places), Stray inductance - Cstray = 0.5 pF, Stray capacitance - L2X (L4X) = 2x or 4x inductor - C2X (C4X) = range (0.1 to 2.7 pF), Fine tune the tank, if used. Work out the resonance of this network and you have a good first guess for the require d inductor values for optimum performance. Non-linear behavior at large signal amplitudes can shift the tank resonance significantly, especially at the L2X side, to a lower frequency than the calculation suggests. The Tuning Assistant documents are based upon actual lab tests and are corrected for the non -linear behavior. Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944 -0800 • fax +1(408) 474-1000 • www.micrel.com Rev 6/22/11 Page 7 (Prelim inary ) Analog Frequency Multiplier PL560/565-08 VCXO Family ELECTRICAL SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS PARAMETERS SYMBOL Supply Voltage MIN. V DD MAX. UNITS 4.6 V Input Voltage, DC VI GND-0.5 V DD+0.5 V Output Voltage, DC VO GND-0.5 V DD+0.5 V Storage Temperature TS -65 150 C Ambient Operating Temperature, Industrial T A_ I -40 +85 C Ambient Operating Temperature, Commercial T A_ C 0 +70 C 125 C 260 C 2 kV Junction Temperature TJ Lead Temperature (soldering, 10s) Input Static Discharge Voltage Protection (HBM) Exposure of the device under conditions beyond the limits specified by Maximum Ratings for extended periods may cause permane nt 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 . VOLTAGE CONTROL SPECIFICATION PARAMETERS VCXO Stabilization Time SYMBOL T VCXOSTB CONDITIONS MIN. From power valid VCXO Tuning Range* XTAL C0 /C 1