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PDF AN7195K Data sheet ( Hoja de datos )
| Número de pieza | AN7195K | |
| Descripción | Dual 15 W BTL power IC for car audio | |
| Fabricantes | Panasonic Semiconductor | |
| Logotipo |  |
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ICs for Audio Common Use
AN7195K
Dual 15 W BTL power IC for car audio
s Overview
The AN7195K is an audio power IC developed for the
sound output of car audio (dual 15 W).
It is incorporating various protection circuits to pro-
tect the IC from destruction by GND-open short-circuit
to GND and power supply surge which are the most im-
portant subjects of power IC protection, and the IC will
largely contribute to a high reliability design of equip-
ment.
It is also incorporating the industry's first excellent
muting circuit, which is free from shock noise, so that a
shock noise design under the set transient condition can
be made easily when the muting circuit is used together
with its standby function.
In addition, the AN7195K is pin compatible with the
AN7190NK (dual 20 W), so that the identical pattern
design is allowed for high-class types as well as popular
types.
s Features
• Built-in various protection circuits (realizing high break-
down voltage against destruction )
Power supply surge breakdown voltage of 100 V or more
Ground -open breakdown voltage of 14 V or more
• Built-in standby function (free from shock noise at
standby on/off)
• Built-in muting function
Free from shock noise at mute-on/off
Adapting attenuator method so that abnormal sound due
to waveform deformation is not generated
Attack time, recovery time of 50 ms or less
• Reduction in external components (parts reduction to
half compared with the AN7176K)
It eliminates the need for NF and BS electrolytic ca-
pacitors,
Muting function is unnecessary
Power supply choke coil is unnecessary
• Provided with beep sound input pin
• High sound quality design
• Pin compatible with the AN7190NK (dual 20 W)
s Applications
• Car audio
11.3±0.3
7.7±0.3
Unit : mm
φ3.6
R1.8
(12.5)
(1.2)
(14.1)
(17.63)
(18.7)
(21.5)
R0.7
HZIP016-P-0665A
3.5±0.2
1
1 page  
ICs for Audio Common Use
s Terminal Equivalent Circuits (continued)
Pin No.
Equivalent circuit
7
7
5 kΩ
AN7195K
Description
Mute control pin
Mute changeover pin
Threshold voltage approx. 2.0 V
DC Voltage
8
9
10 300 Ω
VREF = 2.1 V 300 Ω
25 kΩ
25 kΩ
10
300 Ω
VREF = 2.1 V 300 Ω
GND (substrate)
Being connected with substrate only
GND (input)
15 kΩ
Ground pin for input
Beep sound input pin
15 Beep sound signal input pin
Input impedance 25 kΩ
15 kΩ
2
0V
0V
2.1 V
11
11
200 Ω
30 kΩ
Approx. Approx.
15 µA 15 µA
400 Ω
Ch.2 input pin
Ch. 2 input signal applied pin
Input impedance 30 kΩ
0 mV to10 mV
12 Ripple filter pin
VCC
30 kΩ
Output current 3 mA to 10 mA
12
Quick
discharge
circuit
20 kΩ
200 µA
13.0 V
5
5 Page 
ICs for Audio Common Use
AN7195K
s Technical Information (continued)
[2] Application note (continued)
10. Beep sound input function
1) The application circuit using the beep sound input is shown in figure 7. Connect the beep signals from the
microcomputer to pin 10 via the capacitor C1 for DC cut and the resistor R1 for voltage gain adjustment.
2) The voltage gain of beep sound terminal is approx. −4.5 dB. With settings shown in the following drawing,
it is approx.−19 dB (f = 1 kHz).
3) The beep signal is outputted to output terminals, pins 2 and 15 only.
VREF = 2.1 V
300 Ω
34 dB
2
C1 47 kΩ
Beep input
0.022 µF R1
150
GV =
25 k+300 × 50
1/jωC1+R1+
2
10
VREF = 2.1 V
25 kΩ
25 kΩ
300 Ω
34 dB
15
Figure 7
11. Two IC use
Figure 8 shows the application circuit example when two ICs are used :
Power supply 2 200 µF
4.7 kΩ
Out(RR)
Standby
2.2 kΩ
Mute
22 µF
47 µF
In(RR)
In(FR)
In(RL)
In(FL)
S-GND
1 µF
1 µF
1 µF
1 µF
0.022 µF
In(FL)
47 kΩ
4.7 kΩ
4.7 kΩ
4.7 kΩ
Figure 8
0.1 µF 0.1 µF
2.2 Ω 2.2 Ω
Out(FR)
0.1 µF 0.1 µF
2.2 Ω 2.2 Ω
Out(RL)
0.1 µF 0.1 µF
2.2 Ω 2.2 Ω
Out(FL)
0.1 µF 0.1 µF
2.2 Ω 2.2 Ω
11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet AN7195K.PDF ] | |
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