AK2365 Datasheet, PDF (28/31 Pages) Asahi Kasei Microsystems – dPMR Filterless IF LSI

8) Discriminator
[AK2365]
15 PDOUT ^R1
C1=1000pF
C1
14 DISCOUT _R2
R1=220kΩ
R2=1MΩ
LSI
9) Noise AMP
The following gives a sample configuration of a BPF when input frequency is 31kHz.
Some parameters can be calculated using following (1) to (3) equations.
11 NAMPO C2
R3
C3 R1 C1
_
+ _{12 NAMPI}
R2
Noise Amp
AVSS
LSI
C1=0.47uF
C2=C3=220pF
R1=10kΩ
R2=5.6kΩ
R3=150kΩ
(1)　f₀
=
2π
1
R₃(R₁ // R₂ )C²
(2)　G_v
=
R₃
2R₁
(3)　Q² = ^R3
4(R₁ // R₂ )
MS1453-E-01
- 28 -
2012/10