HA12134A Datasheet, PDF (10/27 Pages) Hitachi Semiconductor – Dolby B-Type Noise Reduction System

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