HA12215F Datasheet, PDF (64/69 Pages) Hitachi Semiconductor – Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System)

HA12215F
ALC Total Harmonic Distortion vs. Input Level (2)
f = 1kHz, V_S = ±7.0V
TYPE II
(Crom tape)
1.0
Cal = 0V
Cal = 2.5V
Cal = 5V
0.1
0.01
−5
0
5
10 15 20 25 30
Input Level Vin (dB)
ALC Operate Level vs. Frequency
10
8
ALC-CAL = 5V
6
4
ALC-CAL = 2.5V
2
0
ALC-CAL = 0V
−2
Vin = ±12dB, Both channel input (L, Rch), RIN → RECOUT
TYPE I, IV (Norm tape, Metal tape)
TYPE II (Crom tape)
−4
100
1k
10k
50k
Frequency (Hz)
Rev.5, Oct. 1999, page 64 of 69