HA12163 Hitachi Semiconductor, HA12163 Datasheet - Page 15

• Manufacturer Part Number: HA12163
• Description: Audio Signal Processor for Car Deck and Cassette Deck (Dolby B-type NR with PB Amp)
• Manufacturer: Hitachi Semiconductor

Application Note
1. Power Supply Range
Table 1
Single supply
2. Reference Voltage
HA12163 series are provided with four line output level, which will permit on optimum overload
A. The lower limit of supply voltage depends on the line output reference level.
B. In the reverse-voltage conditions such as ‘D-GND is higher than V
These devices provide the reference voltage of half the supply voltage that is the signal grounds. As the
margin for power supply conditions. And this series are designd to operate on single supply only.
In case of split supply use, please consult with sales engineer.
The minimum value of the overload margin is specified as 12 dB by Dolby Laboratories.
GND’, excessive current flows into the D-GND to destory this IC. To prevent such destruction, pay
attention to the followings on using.
Short-circuit the D-GND and GND directory on the board mounting this IC.
peculiarity of these devices, the capacitor for the ripple filter is very small about 1/100 compared
with their usual value. The Reference voltage are provided for the left channel and the right channel
separately. The block diagram is shown as figure 1.
GND 49
Supply Voltage
22
HA12163
6.5 V to 16.0 V
Figure 1 The Block Diagram of Reference Voltage Supply
V
CC
50
40
+
RIP
C22
1
HA12164
7.2 V to 16.0 V
+
+
+
–
–
–
HA12165
8.5 V to 16.0 V
47
52
CC
’ or ‘D-GND is lower than
Rev.4, Jun. 1999, page 15 of 66
V
V
REF
REF
L channel
Music sensor
R channel
(L)
(R)
reference
reference
reference
30
HA12163 Series
HA12160
8.2 V to 16.0 V
MS V
REF