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PDF AN7198Z Data sheet ( Hoja de datos )
| Número de pieza | AN7198Z | |
| Descripción | Dual 20 W BTL Power IC for Car Audio | |
| Fabricantes | Panasonic Semiconductor | |
| Logotipo |  |
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ICs for Audio Common Use
AN7198Z
Dual 20 W BTL Power IC for Car Audio
s Overview
The AN7198Z is an audio power IC developed for the
sound output of car audio (Dual 20 W).
A capacitor and a resistor between the output pin and
GND to stop oscillation are built-in so that a space saving
of set is possible. Also, it is incorporates an industry's
first superior 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, it is incorporating various protective cir-
cuits to protect the IC from destruction by GND-open
short circuit to GND and power supply surge which are
the important subjects of power IC protection, and the IC
will largely contribute to a high reliability design of equip-
ment.
18.00±0.30
13.50±0.30
φ3.60±0.10
Unit: mm
4.00±0.20
1.50±0.10
1 15
1.27
+0.20
0.50–0.10
(0.61)
R0.55
(1.80)
(1.95)
(2.54)
+0.15
0.25–0.05
19.00±0.30
19.30±0.30
HZIP015-P-0745A
s Features
• Built-in various protection circuits (Realizing high breakdown voltage against destruction)
Power supply surge breakdown voltage of 80 V or more
Ground-open breakdown voltage of 16 V or more
• Built-in standby function (Free from shock noise at STB-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
No capacitors and resistors for oscillation stop are unnecessary
It eliminates the need for NF and BS electrolytic capacitors
Muting function is unnecessary
Power supply choke coil is unnecessary
• Provided with beep sound input pin
• High sound quality design
s Applications
• Car audio
1
1 page  
ICs for Audio Common Use
s Terminal Equivalent Circuits (continued)
Pin No.
Equivalent circuits
7
7
200 Ω
AN7198Z
Description
Mute control pin
Mute changeover pin
Threshold voltage approx. 2.1 V
DC voltage
8 GND (substrate)
Substrate
9 GND (input)
Grounding pin for input
10
Rnf 15 kΩ
Beep sound input pin
VREF = 6.3 V
Rnf
15 kΩ
2 Beep sound signal input pin
Input impedance 15.3 kΩ
7.8 kΩ
10
VREF = 6.3 V
15 kΩ
Rnf
Rnf
15
15 kΩ
Rnf
AN7198Z: 600Ω
AN7199Z: 300Ω
11
11
200 Ω
approx. approx.
15 µA 15 µA
600 Ω
Ch.2 input pin
Ch.2 input signal applied pin
Input impedance 30 kΩ
30 kΩ
12
12
VCC
15 kΩ
Ripple filter pin
Output current 3 mA to 10 mA
350 µA
1.7 mA 20 kΩ
0V
0V
2.1 V
0 mV
to 10 mV
13.0 V
5
5 Page 
ICs for Audio Common Use
s Technical Information (continued)
2. Main Characteristics (continued)
ICQ VSTB
200
180
160
140
120
100
80
60
40
VCC = 13.2 V
20 RL = 4 Ω
Rg = 10 kΩ
0
0 12 3 4 5
Standby voltage VSTB (V)
AN7198Z
Voffset VCC
250
200
150
100
channel 1 mute on
50
channel 1
0
channel 2 mute on
−50
channel 2
−100
−150
−200
−250
0
RL = 4 Ω
Rg = 10 kΩ
5 10 15 20
Supply voltage VCC (V)
3. Application note
1) Standby function
(1) The power can be turned on or off
by making pin 5 (standby terminal)
high or low.
Terminal state
Open
Terminal voltage
0V
Power
Standby state
(2) The standby terminal has threshold
voltage of approx. 2.1 V, however, it
has temperature dependency of approx.
−6 mV/°C. The recommended range
of use is shown in Table 1.
Low
High
0 V to 1.0 V
Higher than 3 V
Table 1
Standby state
Operating state
(3) The internal circuit of standby termial
is as shown in Figure 1. When the 5 V
standby terminal is high, the VSTB
current approximately expressed
0V
by the following equation will
flow into the circuit.
5 10 kΩ
Sub
RF
Protection
circuit
Constant
current
source
ISTB=
VSTB−2.7 V
10 kΩ
[mA]
2 kΩ 4 kΩ
Figure 1
(4) A power supply with no ripple component should be used for the control voltage of standby terminal.
11
11 Page | ||
| Páginas | Total 20 Páginas | |
| PDF Descargar | [ Datasheet AN7198Z.PDF ] | |
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