HA12215F Datasheet, PDF (27/69 Pages) Hitachi Semiconductor – Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System)

Signal to Noise Ratio vs. Split Supply Voltage (1)
85
HA12215F
80
f = 1kHz, RECmode
Rin → RECOUT = 300mVrms = 0dB
Rin → PBOUT = 580mVrms = 0dB
75
NR-OFF
NR-ON
RECOUT
NR-OFF
NR-ON
PBOUT
CCIR/ARM filter
70
65
5
6
7
8
9
Split Supply Voltage (V)
Signal to Noise Ratio vs. Split Supply Voltage (2)
85
80
75
f = 1kHz, PBmode
70
AIN
BIN
→ PBOUT = 580mVrms = 0dB
AIN, NR-OFF
BIN, NR-OFF
AIN, NR-ON
BIN, NR-ON
CCIR/ARM filter
65
5
6
7
8
9
Split Supply Voltage (V)
Rev.5, Oct. 1999, page 27 of 69