HA12226F Datasheet, PDF (10/86 Pages) Hitachi Semiconductor – Audio Signal Processor for Cassette Deck(Dolby B-type NR with Recording System)

HA12226F/HA12227F
Functional Description
Power Supply Range
These ICs are designed to operate on single supply.
Table 1 Supply Voltage
Product
Power Supply Range (Single Supply)
HA12226F
11.0 V to 15.0 V
HA12227F
9.5 V to 15.0 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 (Dolby IC
HA12226F).
Reference Voltage
The reference voltage are provided for the left channel and the right channel separately. The block diagram
is shown as figure 1.
21 ^VCC
+
−
V_CC
+
−
+
−
50 _GND 49_+RIP
1µ
L channel reference
Music sensor reference
R channel reference
Unit C: F
Figure 1 Reference Voltage
Rev.6, Dec. 2000, page 10 of 86