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PL565-68 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 PL565-68
기능 Analog Frequency Multiplier
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PL565-68 데이터시트, 핀배열, 회로
(Preliminary) Analog Frequency Multiplier
PL565-68 VCXO
PRODUCT DESCRIPTION
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 timing-
source in the market.
PL565-68 product utilizes low-power CMOS
technology and is housed in Green / RoHS
compliant 16-pin TSSOP, and 16-pin 3x3 QFN
packages.
QFN PACKAGE PIN-OUT
FEATURES
Non-PLL frequency multiplication by 2.
Input frequency from 62.5-160 MHz
Output frequency
o PL565-68: 125-320MHz
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 -155 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 (-40C to +85C)
Available in 16-pin Green/RoHS compliant 3x3 QFN
packages and as die.
VDDANA
OESEL
VDDOSC
L2X
12
13
11 10
9
8
14 P565-68 7
15 6
16 5
123 4
GNDANA
DNC
OE
XOUT
VCON
XIN
XOUT
PL565-68 BLOCK DIAGRAM
L2X
Oscillator
Amplifier
Frequency
X2
OE
QBAR
Q
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 9 44-0800 • fax +1(408) 474-1000 • www.micrel.com Rev 12/08/11 Page 1
PL565-68 pdf, 반도체, 판매, 대치품
(Preliminary) Analog Frequency Multiplier
PL565-68 VCXO
PHASE NOISE PERFORMANCE
Part
Number
Input
Freq.
Range
(MHz)
Output
Freq.
Range
(MHz)
Phase Noise at Frequency Offset From Carrier (dBc/Hz)
Carrier
Freq.
(MHz)
10 100 1 10 100 1 10
Hz Hz kHz kHz kHz MHz MHz
PL565-68 62.5 - 160 125 - 320 311.04
Phase noise was measured using Agilent E5052B.
-59 -93 -122 -137 -143 -149 -155
Phase
Jitter
12KHz ~
20MHz
(ps)
0.07
SUB-HARMONIC PERFORMANCE
Part
Number
Input
Output
Frequency Frequency
(MHz)
(MHz)
Spectral Specifications / Sub-harmonic Content (dBc), Freq. (MHz)
Carrier Frequency
(Fc)
@ -50%
(Fc)
@ +50%
(Fc)
PL565-68
155.52
311.04
311.04
Note: Spectral specifications were obtained usin g Agilent E7401A
-60
-60
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 sin e 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 only one
inductor per squarer is adequate for excellent performance.
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 9 44-0800 • fax +1(408) 474-1000 • www.micrel.com Rev 12/08/11 Page 4

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PL565-68 전자부품, 판매, 대치품
(Preliminary) Analog Frequency Multiplier
PL565-68 VCXO
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 from
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 high Q small size 0402 or 0603 SMD component, and must be placed
between L2X 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
- 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 = 2x inductor
- C2X = 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 required 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) 9 44-0800 • fax +1(408) 474-1000 • www.micrel.com Rev 12/08/11 Page 7

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부품번호상세설명 및 기능제조사
PL565-68

Analog Frequency Multiplier

Micrel
Micrel

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