Updated 4-27-08.  Update page to reflect Revision A.
Updated 6-13-08.  Update page to reflect Revision B.
Updated 8-07-08.  Update page to reflect Schematic change to Revision C.
Updated 9-01-08.  Errors in parts list, now PLSLIM-PLO-2 rev C. See R24, R25.
Updated 7-23-09.  Update page to reflect that the PWB is now Revision B.
Updated 8-11-09.  Update information. Add release history.
Updated 12-26-10.  Update PLL chip support and move Parts List to this page.

SLIM-PLO-2, Phase Locked Oscillator with passive loop, size-B
Use your mouse's "right click" and "Save Link" to download:
a.  SKSLIM-PLO-2.sch rev C, Schematic, in ExpressPCB software.
b.  LAYSLIM-PLO-2.pcb rev A, Component Layout, in ExpressPCB software.  Use to locate parts on the board.
c.  PLSLIM-PLO-2.rev D, Updated 12-26-10.  Moved Parts List to be accessable only on this page. The parts list specifies LMX2326 as the original design but has now become obsolete. The ADF4118 is a "drop-in" replacement. The ADF4112 or ADF4113 is an option, requiring the use of R23 (U2 pin 1 to ground).  The LMX2326 or ADF4118 does not require R23..
d.  PWB-PLO.pcb rev B, Master Layout Artwork, in ExpressPCB software.  Use to order pwb from Express.  The Rev A pwb is still acceptable to use for PLO 2.
This SLIM is constructed on a common printed wiring board, the PWB-PLO.  Click to get full information on the Basic Phase Locked Oscillator.

SLIM-PLO-2
    Frequency output = 940 MHz to 1075 MHz.  PLL is LMX 2326.  The loop filter is passive (no op amp).  Dual RF outputs, +10 dBm at J2 and J3.  Phase noise at 1024 MHz is -99 dBc, 5 KHz away from carrier.
    R12 and C27 are optional.  Installed, they present a 50 ohm load to the driver.  Omitted, the PLL is high impedance CMOS logic.

Release History
Original Release: Released 7-08-2007
SLIM-PLO-2 Rev 0
Schematic: SK-PLO-2 Rev 0, released 7-08-2007, archived
Pwb: PWB-PLO Rev 0, link to PWB-PLO web page
Parts List: PLSLIM-PLO-2 Rev 0, archived

Revision A: Released 4-26-2008
SLIM-PLO-2 Rev A
Schematic: SK-PLO-2 Rev A, archived
Pwb: PWB-PLO Rev A, link to PWB-PLO web page
Parts List: PLSLIM-PLO-2 Rev A, archived
    Revision A changes the R8-R11 VCO power divider, which adds about 10 dB more isolation between the buffer amplifiers.  Even though it decreases the drive to the buffers by about 5 dB, there is enough power to keep the buffers in saturation.  Therefore, the attenuation resistor values, R15-R17 and R20-R22, are not changed.  However, the output power should be verified and the resistors adjusted if either output needs changing.  The previous revision of the SLIM-PLO-2 (Rev 0), must be modified for these changes.  Exception, if it is being used only in the Basic MSA, without Tracking Generator, the mod is not necessary.
    Revision A changes the input ferite beads to resistors, to allow for better power supply filtering.
    Revision A adds R26, for better supply filtering and noise performance.
    Revision A removes the optional component path under U5.  This was a potential short circuit.
The PWB-PLO Rev 0 is changed to PWB-PLO Rev A to accomodate the changes.

Revision B: Released 6-11-2008
SLIM-PLO-2 Rev B,
Schematic: SKSLIM-PLO-2 Rev B, Released 6-11-2008, archived
Pwb: PWB-PLO Rev A
Parts List: PLSLIM-PLO-2 Rev B, not archived
Change to schematic and parts list.
    Corrected resistor values of  R8, R10, and R11.  Should be 120 ohm.
    Changed output attenuators to 2.5 dB attenuation.  Now, both buffers will output approximately +10 dBm.

Revision to schematic only: Released 8-07-2008
SLIM-PLO-2 Rev B,
Schematic: SKSLIM-PLO-2 Rev C,
Pwb: PWB-PLO Rev A
Parts List: PLSLIM-PLO-2 Rev B, not archived
    Corrected resistor values of  R15 and R17.  Should be 330 ohm, not 150 ohm.
    Corrected resistor value of  R16.  Should be 15 ohm, not 37.4 ohm.  Parts list is correct.

Revision to parts list only: Released 9-01-2008
SLIM-PLO-2 Rev B,
Schematic: SKSLIM-PLO-2 Rev C,
Pwb: PWB-PLO Rev A
Parts List: PLSLIM-PLO-2 Rev C

Revision to PWB only: Released 7-23-2009
SLIM-PLO-2 Rev B,
Schematic: SKSLIM-PLO-2 Rev C,
Pwb: PWB-PLO Rev B
Parts List: PLSLIM-PLO-2 Rev C
  This change to the PWB was for a change to SLIM-PLO-1.  It does not affect the operation of SLIM-PLO-2 Rev B.  SLIM-PLO-2 Rev B can be assembled on either version of the PWB: PWB-PLO Rev A or PWB-PLO Rev B.

Revision to parts list only: Released 12-26-2010 and moved to this page.
SLIM-PLO-2 Rev B,
Schematic: SKSLIM-PLO-2 Rev C,
Pwb: PWB-PLO Rev B
Parts List: PLSLIM-PLO-2 Rev D

SK-PLO-2, Schematic of SLIM-PLO-2