HA12134A Datasheet, PDF (21/27 Pages) Hitachi Semiconductor – Dolby B-Type Noise Reduction System

HA12134A
30
20
10
HA12134A, HA12135A, HA12136A
PB Out
NR–ON/OFF
REC Out
NR–OFF
0
100
300 600 1 k
3 k 6 k 10 k 30 k 60 k 100 k 300 k 600 k 1 M
Frequency [Hz]
Figure 27 REC Mode Output Gain vs. Frequency
HA12134A
30
20
10
0
REC Out
NR–ON
PB Out
NR–OFF
REC Out
NR–OFF
100 300 600 1 k
3 k 6 k 10 k 30 k 60 k 100 k 300 k 600 k 1 M
Frequency [Hz]
Figure 28 PB Mode Output Gain vs. Frequency
Rev.3, Jun. 1999, page 21 of 27