HA12203NT Datasheet, PDF (26/97 Pages) Hitachi Semiconductor – Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System)

HA12203NT/HA12204NT
HA12203NT
12
V_S = ±7.0 V
Dolby B-NR
10
Encode Boost vs. Frequency
8
6
4
2
0
100
300 500
1k
3k 5k
10 k
Frequency (Hz)
Decode Cut vs. Frequency
0
–2
–4
–6
–8
–10
V_S = ±7.0 V
Dolby B-NR
–12
0
300 500
1k
3 k 5 k 10 k
Frequency (Hz)
0 dB (±8 V)
–10 dB (±8 V)
–20 dB (±8 V)
–30 dB (±8 V)
–40 dB (±8 V)
0 dB (±7 V)
–10 dB (±7 V)
–20 dB (±7 V)
–30 dB (±7 V)
–40 dB (±7 V)
0 dB (±4.5 V)
–10 dB (±4.5 V)
–20 dB (±4.5 V)
–30 dB (±4.5 V)
–40 dB (±4.5 V)
0 dB (±8 V)
–10 dB (±8 V)
–20 dB (±8 V)
–30 dB (±8 V)
–40 dB (±8 V)
0 dB (±7 V)
–10 dB (±7 V)
–20 dB (±7 V)
–30 dB (±7 V)
–40 dB (±7 V)
0 dB (±4.5 V)
–10 dB (±4.5 V)
–20 dB (±4.5 V)
–30 dB (±4.5 V)
–40 dB (±4.5 V)
Rev.3, Jun. 1999, page 26 of 97