SLIM-PLO-1 rev C
Phase Locked Oscillator
with Active Loop


Updated  7-23-09.  Update page to reflect Revision C and modification to Rev B.
Updated  8-11-09Update information. Add release history.
Updated 12-26-10Update PLL chip support and move Parts List to this page.
Updated 5-13-15Change Parts List to Rev F. C6, C8, C10, C16, C33, C40, and C46 are changed. Remove Release History.
Updated  5-3-17.  Update parts list to include alternate VCO

SLIM-PLO-1, Phase Locked Oscillator with active loop, size-B
Use your mouse's "right click" and "Save Link" to download:
a. 
SKSLIM-PLO-1.sch rev C, Schematic, in ExpressPCB software.
b.  LAYSLIM-PLO-1.pcb rev B, Component Layout, in ExpressPCB software.  Use to locate parts on board.
c.  PLSLIM-PLO-1.rev F, Updated 1-23-16. Maintained only on this page.
d.  PWB-PLO.pcb rev B, Master Artwork, in ExpressPCB software. Use to order pwb from Express.
e.  PLO1revC.pll  PLL Simulation. Open with ADIsimPLL Version 3.0
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-1
    Frequency output = 950 MHz to 2200 MHz.  PLL is LMX 2326 or ADF 4118.  The loop filter is active, using an Op Amp.  A negative supply voltage is not required.  Dual RF outputs, +8 to +10 dBm at J2 and J3.  Phase noise at 1000 MHz is -91 dBc (1 Hz BW), 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.  For best spur rejection, they should be installed.

Notice:    It is possible that the power outputs at J2 and J3 may be low. The most likely cause is that the output power of the Minicircuits VCO, ROS-2150VW, is lower than specification. Its output power can be increased by increasing the voltage supply at the VCO (U4 pin 14) to +6.0 volts, +/- .1volt.  This will increase the output power of the VCO by 2 to 3 dB.  There are two ways to do this:
  1.  Change the LM74L05 to a 6v or 6.2v regulator.  Replace R26 with a value of resistance to assure 6.0 volts at the VCO, U4 pin 14.  The nominal current of the VCO is about 20 ma.
Or,
  2.  Remove the voltage regulator, U5.  Reinstall U5, but do not connect it's power tab or it's pin 2 to ground.  Add two diodes in series, between U5-2 to ground.  Anode to U5-2 and cathode to ground.  Add a 1.0 ufd capacitor from U5-2 to ground.  The output of U5 will increase to about 6.2 to 6.4 volts.
  Replace R26 with a value of resistance to assure 6.0 volts at the VCO, U4 pin 14.  The nominal current of the VCO is about 20 ma.
    Another option is to replace the U7 and U8 amplifiers from the ERA-33SM to the Minicircuits LEE-39 or LEE-59.They have about 2 dB more gain. The supply bias resistors would need to be modified for proper current. I have not tried this change. It was suggested by an MSA user.

SKSLIM-PLO-1, Schematic of SLIM-PLO-1, Revision C
slim/skslim_plo_1.gif
Note: The LMX2326 used at U2 is obsolete. Use ADF4118 for new builds.
Note: R23 is not shown on schematic. It is used only when ADF 4112 is substituted for U2. It is placed from U2 pin 1 to ground.

LAYSLIM-PLO-1, Layout of SLIM-PLO-1, Revision B
slim/layslim_plo_1.gif
    This layout is used as a parts locater.  Not to be used for ordering the PWB.
Note: R23 is not shown on layout. It is used only when ADF 4112 is substituted for U2. It is placed on the available circuit pads at U2 pin 1 to ground.

PLSK-SLIM-PLO-1 Rev F, 5-13-2015. For SLIM-PLO-1 Rev C. (updated 1-23-2016. Values not changed, just part numbers. Changes in bold type)
Designator Value Part Number Digikey Number Cost Notes
C1 680 pF C0805C681J5GACTU 399-1135-1-ND 0.11 Rev D change from 100 pf
C2 .01 uF C0805C103K5RACTU 399-1158-1-ND 0.04
C3 5100 pF GRM2195C1H512JA01D 490-1635-1-ND 0.27
C4 .01 uF C0805C103K5RACTU 399-1158-1-ND 0.04
C5 .1 uF C0805C104K3RACTU 399-1168-1-ND 0.05
C6 10uf/16v AVX, TPSB106K016R0500 478-5230-1-ND 0.65 preferred, Rev F
C7 .1 uF C0805C104K3RACTU 399-1168-1-ND 0.05
C8 10uf/16v AVX, TPSB106K016R0500 478-5230-1-ND 0.65 preferred, Rev F
C9 .1 uF C0805C104K3RACTU 399-1168-1-ND 0.05
C10 10uf/16v AVX, TPSB106K016R0500 478-5230-1-ND 0.65 preferred, Rev F
C11 .001 uF C0805C102J5GACTU 399-1136-1-ND .08
C12 .1 uF C0805C104K3RACTU 399-1168-1-ND 0.05
C13 .01 uF C0805C103K5RACTU 399-1158-1-ND 0.04
C14 .01 uF C0805C103K5RACTU 399-1158-1-ND 0.04
C16 10uf/16v AVX, TPSB106K016R0500 478-5230-1-ND 0.65 preferred, Rev F
C17 .01 uF C0805C103K5RACTU 399-1158-1-ND 0.04
C18 .001 uF C0805C102J5GACTU 399-1136-1-ND 0.08
C19 .01 uF C0805C103K5RACTU 399-1158-1-ND 0.04
C20 .001 uF C0805C102J5GACTU 399-1136-1-ND 0.08
C21 100 pF C0805C101K5GACTU 399-1121-1-ND 0.05
C22 100 pF C0805C101K5GACTU 399-1121-1-ND 0.05
C23 100 pF C0805C101K5GACTU 399-1121-1-ND 0.05
C24 100 pF C0805C101K5GACTU 399-1121-1-ND 0.05
C25 100 pF C0805C101K5GACTU 399-1121-1-ND 0.05
C26 .01 uF C0805C103K5RACTU 399-1158-1-ND 0.04
C27 .01 uF C0805C103K5RACTU 399-1158-1-ND 0.04
C28 .1 uF C0805C104K3RACTU 399-1168-1-ND 0.05
C29 .01 uF C0805C103K5RACTU 399-1158-1-ND 0.04
C30 .1 uF C0805C104K3RACTU 399-1168-1-ND 0.05
C31 .1 uF C0805C104K3RACTU 399-1168-1-ND 0.05
C32 .1 uF C0805C104K3RACTU 399-1168-1-ND 0.05
C33 10uf/16v AVX, TPSB106K016R0500 478-5230-1-ND 0.65 preferred, Rev F
C34 100 pF C0805C101K5GACTU 399-1121-1-ND 0.05
C35 .01 uF C0805C103K5RACTU 399-1158-1-ND 0.04
C36 100 pF C0805C101K5GACTU 399-1121-1-ND 0.05
C37 100 pF C0805C101K5GACTU 399-1121-1-ND 0.05
C38 .1 uF C0805C104K3RACTU 399-1168-1-ND 0.05
C39 .1 uF C0805C104K3RACTU 399-1168-1-ND 0.05
C40 10uf/16v
AVX, TPSB106K016R0500 478-5230-1-ND 0.65 preferred, Rev F
C41 100 pF C0805C101K5GACTU 399-1121-1-ND 0.05
C42 .01 uF C0805C103K5RACTU 399-1158-1-ND 0.04
C43 100 pF C0805C101K5GACTU 399-1121-1-ND 0.05
C44 100 pF C0805C101K5GACTU 399-1121-1-ND 0.05
C45 .1 uF C0805C104K3RACTU 399-1168-1-ND 0.05
C46 10uf/25v AVX, F951E106KBAAQ2 478-8495-1-ND 1.11 preferred, Rev F
C48 680 pF C0805C681J5GACTU 399-1135-1-ND 0.11 Rev D added
FB1



Rev A deleted
FB2 Ferite Bead BLM21PG221SN1D 490-1054-1-ND 0.06
FB3



Rev A deleted
FB6 Ferite Bead BLM21PG221SN1D 490-1054-1-ND 0.06
J1 SMA Molex, 538-73391-0070 WM5544-ND 4.74
J2 SMA Molex, 538-73391-0070 WM5544-ND 4.74
J3 SMA Molex, 538-73391-0070 WM5544-ND 4.74
L1 68 nH LQW18AN68NJ00D 490-1178-1-ND 0.39 substitute carefully
L2 68 nH LQW18AN68NJ00D 490-1178-1-ND 0.39 substitute carefully
P1 Conn. 7 pin Sold as a row of 36 pins S1012E-36-ND 0.21
P2 Conn. 2 pin
Sold as a row of 36 pins S1012E-36-ND 0.06
R1 1 K MCR10EZHF1.00K RHM1.00KCCT-ND 0.04
R2 2 K MCR10ERTF2001 RHM2.00KCHCT-ND 0.04
R3 470 MCR10ERTF4700 RHM470CHCT-ND 0.04 Rev D
R5 10 K MCR10EZHF10.0K RHM10.0KCCT-ND 0.04
R6 10 K MCR10EZHF10.0K RHM10.0KCCT-ND 0.04
R7 75 MCR10ERTF75R0 RHM75CHCT-ND 0.04
R8 120 MCR10ERTF1200 RHM120CHCT-ND 0.04 Rev B
R9



Rev A deleted
R10 120 MCR10ERTF1200 RHM120CHCT-ND 0.04 Rev B
R11 120 MCR10ERTF1200 RHM120CHCT-ND 0.04 Rev B
R12 49.9 MCR10ERTF49R9 RHM49.9CHCT-ND 0.04
R13 75 1/4W MCR18ERTF75R0 RHM75CJCT-ND 0.05
R14 75 1/4W MCR18ERTF75R0 RHM75CJCT-ND 0.05
R15 330 MCR10ERTF3300 RHM330CHCT-ND 0.04
R16 15 MCR10ERTF15R0 RHM15CHCT-ND 0.04
R17 330 MCR10ERTF3300 RHM330CHCT-ND 0.04
R18 75 1/4W MCR18ERTF75R0 RHM75CJCT-ND 0.05
R19 75 1/4W MCR18ERTF75R0 RHM75CJCT-ND 0.05
R20 330 MCR10ERTF3300 RHM330CHCT-ND 0.04 Rev A
R21 15 MCR10ERTF15R0 RHM15CHCT-ND 0.04 Rev A
R22 330 MCR10ERTF3300 RHM330CHCT-ND 0.04 Rev A
R23-opt
4.7 K
MCR10ERTF4701 RHM4.70KCHCT-ND 0.04
used with ADF 4112 only
R24 75 MCR10ERTF75R0 RHM75CHCT-ND 0.04 Rev C
R25 75 MCR10ERTF75R0 RHM75CHCT-ND 0.04 Rev C
R26 10 MCR10ERTF10R0 RHM10.0CHCT-ND 0.04 Rev A added
R27 24.9 MCR10ERTF24R9 RHM24.9CHCT-ND 0.04 Rev A added
R28 10 MCR10ERTF10R0 RHM10.0CHCT-ND 0.04 Rev A added
RX1 0 MCR10EZHJ0.0 RHM0.0ACT-ND 0.08 can use jumper wire
U1 78L05 78L05ACU 497-1183-1-ND 0.77
U2 LMX2326 LMX2326TM LMX2326TM-ND 2.88 obsolete part, Rev E
U2-alternate
ADF4118
ADF4118BRUZ ADF4118BRUZ-ND 5.24
replaces LMX2326, Rev E
U3 LT1677 LT1677CS8#PBF LT1677CS8#PBF-ND 4.50
U4 ROS-2150VW Minicircuits

29.95
U4-alternate CVCO55BE-1000-2000 Crystek           Mouser PN: 549-CV55BE1000-2000 24.78 Higher Pout than Minicircuit
U5 78L05 78L05ACU 497-1183-1-ND 0.77
U5-optional
78L06.2
UA78L06ACPK 296-15739-1-ND 0.44
6.2 volt option, Rev E
U7 ERA-33SM Minicircuits
1.72
U8 ERA-33SM Minicircuits
1.72
PWB Circuit Board PWB-PLO
6.56 ExpressPCB


Modification of SLIM-PLO-1 Rev B to SLIM-PLO-1 Rev C:
1.  Change R3 from 1K to 470 ohms.  Or, piggyback another 1K on its top.
  This total value is not critical.  The picture shows that a 510 ohm was used for the mod.
2.  Change C1 from 100 pf to 680 pf.  Or, piggyback a 680 pf on the top of the existing 100 pf.  This total value is not critical.
3.  Add C48, 680 pf.  Place the new capacitor on the junctions of R2 and C2.
slim/plo1mod.gif