an7198z Panasonic Corporation of North America, an7198z Datasheet

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an7198z

Manufacturer Part Number
an7198z
Description
Dual 20 W Btl Power Ic For Car Audio
Manufacturer
Panasonic Corporation of North America
Datasheet
ICs for Audio Common Use
AN7198Z
Dual 20 W BTL Power IC for Car Audio
sound output of car audio (Dual 20 W).
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.
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.
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
Car audio
Overview
Features
Applications
The AN7198Z is an audio power IC developed for the
A capacitor and a resistor between the output pin and
In addition, it is incorporating various protective cir-
1
3.60±0.10
18.00±0.30
13.50±0.30
19.00±0.30
19.30±0.30
1.27
HZIP015-P-0745A
0.50
+0.20
–0.10
15
(0.61)
1.50±0.10
(1.80)
(2.54)
4.00±0.20
Unit: mm
0.25
(1.95)
+0.15
–0.05
R0.55
1

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an7198z Summary of contents

Page 1

... ICs for Audio Common Use AN7198Z Dual 20 W BTL Power IC for Car Audio 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 ...

Page 2

... AN7198Z Block Diagram 3 ch.1 GND 4 ch.1 Out ( ) Att 2 ch.1 Out ( ) Att Pin Description Pin No. Description 1 Power supply 2 Ch.1 output ( ) 3 Grounding (output ch.1) 4 Ch.1 output ( ) 5 Standby 6 Ch.1 input 7 Muting 8 Grounding (board) Absolute Maximum Ratings Parameter * 2 Supply voltage * 3 Peak supply voltage Supply current * 4 Power dissipation * 1 Operating ambient temperature * 1 Storage temperature Note except operating ambient temperature and storage temperature ...

Page 3

... THD MUTE V on/off HPF-on STB kHz 500 ms 500 ms AN7198Z Unit V Min Typ Max Unit 150 250 0.18 0.5 mV[rms 0.05 0 ...

Page 4

... Drive Circuit 2 Drive Circuit AN7198Z: 600 AN7199Z: 300 Drive Circuit 4 Drive Circuit AN7198Z: 600 AN7199Z: 300 200 600 Description Supply voltage connection pin Power supply connection pin Ch.1 output pin ( ) Pre-amp. Ch.1 positive-phase output pin V 6 ...

Page 5

... 6 REF 7 6 REF R AN7198Z: 600 nf AN7199Z: 300 11 11 200 600 1 Mute control pin Mute changeover pin Threshold voltage approx. 2.1 V GND (substrate) Substrate GND (input) Grounding pin for input Beep sound input pin ...

Page 6

... Drive Circuit 14 Drive Circuit AN7198Z: 600 AN7199Z: 300 Usage Notes 1. Always attach an outside heat sink to use the chip. In addition, the outside heat sink must be fastened onto a chassis for use. 2. Connect the cooling fin to GND potential. 3. Avoid short-circuit to V and short circuit to GND, and load short-circuit. There is a danger of destruction under CC a special condition ...

Page 7

... C/W heat sink 2 C/W heat sink 3 C/W heat sink 5 C/W heat sink 10 C/W heat sink Without heat sink 100 125 Ambient temperature AN7198Z 150 ...

Page 8

... AN7198Z Technical Information (continued) 2. Main Characteristics (continued THD 100.00 10.00 THD 10 kHz THD 100 kHz f 1 kHz 1.00 R 400 Hz HPF 30 kHz LPF Both channel input R 0. 100 Input voltage V (mV[rms ( ...

Page 9

... V 13 kHz V[rms 000 0 (Hz) r AN7198Z 13 Flat DIN Audio Filter 100 1 000 10 000 100 000 Input impedance channel 1 channel 2 V 13.2 V ...

Page 10

... AN7198Z Technical Information (continued) 2. Main Characteristics (continued channel kHz 400 Hz HPF 10 30 kHz LPF 100 Input voltage V (mV[rms 110 100 Supply voltage V ( ...

Page 11

... R 4 200 250 Terminal state Terminal voltage Open Low High Higher than STB 0 V Sub AN7198Z V V offset CC channel 1 channel Supply voltage V (V) CC Power 0 V Standby state 1.0 V ...

Page 12

... AN7198Z Technical Information (continued) 3. Application note (continued) 2) Output line noise countermeasures (1) In order to increase the oscillation allowance unnecessary to use a capacitor and a resistor between each output terminal and GND. However, when inserting the capacitor for counter- measures against output line noise between the output terminal and GND, insert a resistor of approx ...

Page 13

... Pin 9 is input signal GND. Connect only pin 9 with GND of the input. resistor Constant current source 350 A 1 REF 4 k Figure 5 AN7198Z/99Z 1 3 AN7198Z 1000 60 100 1.0 10 100 RF capacitor value ( F) Figure 4 Protection circuit GND of input Figure 6 ...

Page 14

... AN7198Z Technical Information (continued) 3. Application note (continued) 6) Cooling fin (1) The cooling fin is not connected with GND terminal by using Au wire. Only pin 8 is electrically connected through the substrate. (2) Always attach an outside heat sink to the cooling fin. The cooling fin must be fastened onto a chassis for use. ...

Page 15

... When the attack time and recovery time are set less, pay attention to the IC with larger output offset because it may release the shock noise. 9) Voltage gain The voltage gain is fixed for the AN7198Z, and 40 dB for the AN7199Z not possible to change those values by the addition of an external resistance. 10) Beep sound input function (1) The application circuit example when using the beep sound input is shown in Figure 8 ...

Page 16

... AN7198Z Technical Information (continued) 3. Application note (continued) 11) Two IC use Figure 9 shows the application circuit example when two ICs are used: Power supply 2200 F Standby 10 k Mute 2 (RR) In (FR) In (RL) In (FL) S-GND 0.022 F Beep ICs for Audio Common Use ...

Page 17

... Precautions on misuse (1) Erroneous connection in the case of short circuit to V The AN7198Z/99Z have the breakdown voltage more when short circuit to V circuit occur. However, there is a possibility of destruction, then smoke emission and ignition under a special condition. Avoid misuse and erroneous connection of the circuit. ...

Page 18

... Application note (continued) 12) Precautions on misuse (continued) (1) Destruction mode for the AN7198Z/99Z The AN7198Z/99Z are the power ICs with high breakdown withstanding voltage but it has been found that the destruction occurs under special conditions. GND-open short-circuit to ground. Short-circuit the output terminal to the GND terminal of power supply when GND terminal of the IC is open short-circuiting is made to GND when the GND terminal of the IC is over 0 ...

Page 19

... ICs for Audio Common Use Technical Information (continued) 4. Countermeasure for shock noise of the AN7198Z (continued) 2) Standby pin to off (pin 5 V STB (1) Ripple filter pin (pin 12) becomes off gradually (Discharge down when V Current source and reference voltage are on until V (2) Output D range suppression circuit operates when the ripple filter pin voltage is less than 6.8 V. ...

Page 20

... AN7198Z Technical Information (continued) 4. Countermeasure for shock noise of the AN7198Z (continued) 3) Muting on/off (Pin7 low: Muting state, high: Operating state) (continued) (2) Attack and recovery time of muting on/off is determined by the external CR time constant of pin 7. (3) There is afraid of shock noise when time constant is set less. ...

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