HA12181FP Datasheet, PDF (15/21 Pages) Hitachi Semiconductor – AM Radio Noise Reduction System

HA12181FP
10
Vo (AF) : 0 dB = 76 mVrms
0
-10
-20
fc = 450 kHz, m = 30%, fm = 1kHz
-30
-40
Noise (no modulation)
-50
-60
-70
10 20 30 40 50 60 70 80 90 100 110 120
Vin (EMF) (dBµ)
50
Pulse input at Gate ON
10µs
20
V pulse
10
2ms
5
2
1
0.5
0.2
1k
5 k 10 k
R (Ω)
50 k 100 k
Rev.2, Jun. 1997, page 15 of 21