HA12215F Datasheet, PDF (9/69 Pages) Hitachi Semiconductor – Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System)

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