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What is PL663-28?

This electronic component, produced by the manufacturer "Micrel", performs the same function as "Analog Frequency Multiplier".


PL663-28 Datasheet PDF - Micrel

Part Number PL663-28
Description Analog Frequency Multiplier
Manufacturers Micrel 
Logo Micrel Logo 


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Analog Frequency Multiplier
PL663-xx XO Families
DESCRIPTION
Analog Frequency Multipliers TM (AFMs) are the
industry’s first “Balanced Oscillatorutilizing analog
multiplication of the fundamental frequency (at
double or quadruple frequency), combined with an
attenuation of the fundamental of the reference
crystal, without using a phase-locked loop (PLL), in
CMOS technology.
Patent pending PL663-xx family of AFM products
can achieve up to 800 MHz differential LVPECL,
LVDS, or single-ended LVCMOS output with little
jitter or phase noise deterioration.
PL663-xx family of products utilizes a low-power
CMOS technology and is housed in GREEN/ RoHS
compliant 16-pin TSSOP and 3x3 QFN packages.
FEATURES
Non-PLL frequency multiplication
Input frequency from 30-200 MHz
Output frequency from 60-800 MHz
Low phase noise and jitter (equivalent to fundamental
at the output frequency)
Ultra-low jitter
o RMS phase jitter < 0.25 ps (12 kHz to 20 MHz)
o RMS period jitter < 2.5 ps typ.
Low phase noise
o -145 dBc/Hz @ 100 kHz offset from 155.52 MHz
o -150 dBc/Hz @ 10 MHz offset from 155.52 MHz
Low input frequency eliminates the need for expensive
crystals
Differential LVPECL/LVDS, or single-ended LVCMOS
output
Single 2.5V or 3.3V +/- 10% power supply
Optional industrial temperature range (-40C to
+85C)
Available in 16-pin GREEN/RoHS compliant TSSOP,
and 16-pin 3x3 QFN packages.
Figure 1: 2X AFM Phase Noise at 212.5 MHz (106.25 MHz 3rd overtone crystal)
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944-0800 • fax +1(408) 474-1000 • www.micrel.com Rev. 02/18/10 Page 1

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PL663-28 equivalent
Analog Frequency Multiplier
PL663-xx XO Families
EXTERNAL COMPONENT VALUES
INDUCTOR VALUE OPTIMIZATION
The required inductor value(s) for the best performance depends on the operating frequency, and the board
layout 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.
To assist with the inductor value optimization, Micrel has developed the “AFM Tuning Assistant” software. You
can download this software from Micrel’s web site (www.micrel.com). The software consists of two worksheets.
The first worksheet (named L2) is used to fine-tune the ‘L2’ inductor value, and the second worksheet (named L4)
is used for fine tuning of the ‘L4’ (used in 4x AFMs only) inductor value.
For those designs using Micrel’s recommended board layout, you can use the “AFM Tuning Assistant” to
determine the optimum values for the required inductors. This software is developed based on the parasitic
information from Micrel’s board layout and can be used to determine the required inductor and parallel capacitor
(see LWB1 and Cstray parameters) values. For those employing a different board layout in their design, we
recommend to use the parasitic information of their board layout to calculate the optimized inductor values.
Please use the following fine tuning procedure:
Figure 5: Diagram Representation of the Related System Inductance and Capacitance
DIE SIDE
- Cinternal = Based on AFM Device
- Cpad = 2.0 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 = 1.0 pF, Stray capacitance
- L2X = 2x inductor
- C2X = range (0.1 to 2.7), Fine tune inductor if used
Micrel Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel +1(408) 944-0800 • fax +1(408) 474-1000 • www.micrel.com Rev. 02/18/10 Page 5


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Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for PL663-28 electronic component.


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