1993_Motorola_Linear_Interface_ICs_Vol_2.pdf

Winding Instructions
Use 38 AWG enameled wire. Start at "ST" pin, go to the top
of the bobbin: wind 2-1/2 turns on the first tier; 3 turns on the
second tier; 2-3/4 turns on the third tier, then go to the center
tap ·CT" pin. From the CT wind 2-3/4, 3 and 2-1/2 turns on the
first, second and third tiers respectively, then finish the
F
MC44301
Figure 18. Winding Details for the VCO Coli
Number of turns from ST to CT
2-1/2 3 2-3/4
000 000 000
1st 2nd 3rd
Tier Tier Tier
000 000 000
2-3/4 3 2-1/2
Number of turns from CT to F
8-1/4 Turns
8-1/4 Turns
Blfiliar Wound 16-1/2 Turns
windings at the "F" pin. Wind the wire in the same direction,
making sure it is wound tightly around the bobbin. The wire
must be tinned to obtain the necesary solder connections.
Application of solder directly to the enameled wire will remove
the enamel and adequately tin it.
(Schematic) (Bottom Vlerw)
(TaKa Type 10k Series or Coilcraft Slot 10 Series Bobbin. Recommended
sources for the coil are TaKa TKANAS-T1390ADP and the Coilcraft M1300-A)
MOTOROLA LINEAR/INTERFACE ICs DEVICE DATA
9-254
CT
ST
CT
F