HA12179F Datasheet, PDF (21/40 Pages) Hitachi Semiconductor – Audio Signal Processer for Car Deck and Cassette Deck(Dolby B-type NR with PB Amp)

HA12179F
Encode Boost vs. Frequency Characteristics (V_CC = 6.8V,9V,16V)
10.8
9.6
V_IN= –40 dB
8.4
7.2
6.0
4.8
3.6
2.4
1.2
0
–1.2
100 200
16 V
6.8 V,9 V
–30 dB
–20 dB
500
1k
2k
Frequency (Hz)
–10 dB
0 dB
5k
10k 20k
1.2
0
–1.2
Decode Cut vs. Frequency Characteristics (V_CC=6.8V,9V,16V)
V_IN=0 dB
–10 dB
–2.4
–20 dB
6.8 V,9 V
–3.6
–4.8
16 V
–6.0
–30 dB
–7.2
–8.4
–9.6
–40 dB
–10.8
100 200
500
1k
2k
Frequency (Hz)
5k
10k
20k
Rev.1, Apr. 1994, page 21 of 40