HA12215 Hitachi Semiconductor, HA12215 Datasheet - Page 9

• Manufacturer Part Number: HA12215
• Description: Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System)
• Manufacturer: Hitachi Semiconductor

Functional Description
Power Supply Range
HA12215F is designed to operate on split supply.
Table 1
Product
HA12215F
Note: The lower limit of supply voltage depends on the line output reference level.
Reference Voltage
The reference voltage are provided for the left channel and the right channel separately. The block diagram
is shown as figure 1.
The minimum value of the overload margin is specified as 12 dB by Dolby Laboratories.
Supply Voltage
V
V
CC
EE
V
+6.0 to +7.5
CC
(V)
21
49
50
V
GND
V
CC
EE
Figure 1 Reference Voltage
+
+
+
V
–7.5 to –6.0
EE
(V)
L channel reference
Music sensor reference
R channel reference
Rev.5, Oct. 1999, page 9 of 69
Note
V
CC
+ V
EE
HA12215F
< 1.0 V