AK1573 Datasheet, PDF (35/42 Pages) Asahi Kasei Microsystems – Low Noise Integrated VCO

[AK1573/AK1573B/AK1573C]
15. Recommended External Circuits
Figure.29. Evaluation Board Schematic
Ref. Value
Ref.
C1 Loop Filter C7
C2 Loop Filter C8
C3 Loop Filter C9
C4 470nF C10
C5 100pF C11
C6
10nF
C12
Table.1
Value Ref. Value
Ref.
Value
100pF C13 100pF
R3 Loop Filter
100pF C14 100pF
R1
27kΩ
100pF C15
10nF
R5
100Ω
100pF L1
2.2H
R6
100Ω
10nF
L2
2.2H
R7
51Ω
220nF R2 Loop Filter R8
51Ω
* The exposed pad at the center of the backside should be connected to the ground.
* TEST1 / TEST2 pins should be connected to the ground.
* RFOUT_P / RFOUT_N pins must be connected an inductor and a register to VDD.
* In the case of single-ended output operation, unused output pin is terminated through 50Ω after 100pF
capacitance.
015009351-E-00
- 35 -
2015/8