Panasonic AN7198Z Datasheet

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. 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 cir­cuits 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 equip­ment.

18.00±0.30

13.50±0.30

φ3.60±0.10

115

19.00±0.30

19.30±0.30

1.27

0.50

+0.20
–0.10

HZIP015-P-0745A

■ 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

Unit: mm

4.00±0.20

1.50±0.10

10.0±0.30

(0.61)

(1.80) (1.95)

0.25

(2.54)

13.25±0.30

2.40±0.50

R0.55

+0.15
–0.05

3.25±0.10

15.65±0.50

18.95±0.50

■ Applications

•

Car audio

1

AN7198Z ICs for Audio Common Use

■ Block Diagram

CC

V

1

ch.1 GND ch.2 GND

ch.1 Out (−)

3

4

Att

ch.1 Out (+)

2

Att

8

10

Beep In

6

ch.1 In

Ref.

Protection Cct.

Att.Con.

5

7

Standby

Mute

Att

Att

11

ch.2 In

GND(Sub)

Ripple Filter

12

14

13

15

9

GND (Input)

ch.2 Out (−)

ch.2 Out (+)

■ 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)

Pin No. Description

9 Grounding (input)
10 Beep sound input
11 Ch.2 input
12 Ripple filter
13 Ch.2 output (−)
14 Grounding (output ch.2)
15 Ch.2 output (+)

■ Absolute Maximum Ratings

Parameter Symbol Ratings Unit

2

Supply voltage
Peak supply voltage
Supply current I
Power dissipation
Operating ambient temperature
Storage temperature

Note)*1: Ta = 25°C except operating ambient temperature and storage temperature.

2: Without signal

*

3: Time = 0.2 s

*

4: Ta = 85°C

*

2

*

3

*

4

*

1

*

1

*

V

CC

V

surge

CC

P

D

T

opr

T

stg

− 30 to + 85 °C

− 55 to + 150 °C

25 V
60 V

9.0 A
59 W

ICs for Audio Common Use AN7198Z

■ Recommended Operating Range

Parameter Symbol Ratings Unit

Supply voltage V

CC

■ Electrical Characteristics at VCC = 13.2 V, f = 1 kHz, Ta = 25°C

Parameter Symbol Conditions Min Typ Max Unit

8.0 to 18.0 V

Quiescent current I
Standby current I

1

Output noise voltage

*

Voltage gain 1 G

V

CQ

STB

NO

V1

Total harmonic distortion 1 THD1V
Maximum output power 1 P

1

Ripple rejection ratio

*

O1

RR RL = 4 Ω, Rg = 10 kΩ, Vr = 1 V[rms] 60 65  dB

Channel balance CB V

1

Cross-talk
Output offset voltage V
Muting effect
Input impedance Z
Voltage gain 2 G

*

1

*

CT V

Off

MT VO = 1 W, RL = 4 Ω 70 86  dB

i

V2

Total harmonic distortion 2 THD2V
Maximum output power 2 P

2

Shock noise

*

Total harmonics distortion 3 THD

O2

V

S

3

V

= 0 mV, RL = 4 Ω150 250 mA

IN

V

= 0 mV, RL = 4 Ω110µA

IN

Rg = 10 kΩ, RL = 4 Ω0.18 0.5
V

= 40 mV, RL = 4 Ω 32 34 36 dB

IN

= 40 mV, RL = 4 Ω0.05 0.4 %

IN

mV[rms]

THD = 10%, RL = 4 Ω 16 18.5  W
V

= 14.4 V, RL = 4 Ω  22.0  W

CC

fr = 1 kHz

= 40 mV, RL = 4 Ω01dB

IN

= 40 mV, RL = 4 Ω, Rg = 10 kΩ 60 79  dB

IN

Rg = 10 kΩ, RL = 4 Ω−250 0 250 mV

V

= ± 0.3 V

IN

V

= 40 mV, RL = 2 Ω 32 34 36 dB

IN

= 40 mV, RL = 2 Ω0.08 0.5 %

IN

DC

24 30 36 kΩ

THD = 10%, RL = 2 Ω 16 28  W
RL = 4 Ω, Rg = 10 kΩ, V

V

= on/off, 50 Hz HPF-on

STB

V

= 20 mV, f

IN

= 20 kHz  0.10 0.5 %

IN

= 5 V −100 0 100

MUTE

mV[p-0]

Rg = 10 kΩ, RL = ∞

Note)*1: Measurement using a bandwidth 15 Hz to 30 kHz (12 dB/OCT) filter.

2

: For V

*

Standby terminal voltage

= on/off change over the standby terminal by the voltage of 0 V and 5 V at the time shown below.

STB

5 V

0 V

500 ms 500 ms

3

AN7198Z ICs for Audio Common Use

■ Terminal Equivalent Circuits

Pin No. Equivalent circuits Description DC voltage

1  Supply voltage connection pin 13.2 V

Power supply connection pin

2 Ch.1 output pin (+) 6.3 V

3  GND (Output) 0 V

4 Ch.1 output pin (−) 6.3 V

1

Drive Circuit

Pre-amp.

Ch.1 positive-phase output pin

2

= 6.3 V

V

Drive Circuit

3

15 kΩ

REF

AN7198Z: 600 Ω
AN7199Z: 300 Ω

Grounding pin for ch.1 output

1

Drive Circuit

Pre-amp.

Ch.1 inverted-phase output pin

4

= 6.3 V

V

REF

Drive Circuit

3

15 kΩ

AN7198Z: 600 Ω
AN7199Z: 300 Ω

5 Standby control pin

5

10 kΩ

Standby changeover pin
Threshold voltage approx. 2.1 V

2 kΩ

6 Ch.1 input pin 0 mV

6

200 Ω

approx.

15 µA

600 Ω

approx.

15 µA

Ch.1 input signal applied pin
Input impedance 30 kΩ

30 kΩ

to 10 mV

4

ICs for Audio Common Use AN7198Z

■ Terminal Equivalent Circuits (continued)

Pin No. Equivalent circuits Description DC voltage

7 Mute control pin 

7

200 Ω

Mute changeover pin
Threshold voltage approx. 2.1 V

8  GND (substrate) 0 V

Substrate

9  GND (input) 0 V

Grounding pin for input

10 Beep sound input pin 2.1 V

V

= 6.3 V

REF

7.8 kΩ

R

nf

R

nf

15 kΩ
15 kΩ

15 kΩ

Beep sound signal input pin

2

Input impedance 15.3 kΩ

10

R

nf

V

REF

= 6.3 V

R

nf

15 kΩ

15

RnfAN7198Z: 600Ω

AN7199Z: 300Ω

11 Ch.2 input pin 0 mV

200 Ω

11

600 Ω

approx.

15 µA

approx.

15 µA

Ch.2 input signal applied pin
Input impedance 30 kΩ

to 10 mV

30 kΩ

12 Ripple filter pin 13.0 V

V

CC

15 kΩ

Output current 3 mA to 10 mA

12

350 µA

1.7 mA

20 kΩ

5

AN7198Z ICs for Audio Common Use

■ Terminal Equivalent Circuits (continued)

Pin No. Equivalent circuits Description DC voltage

13 Ch.2 output pin (−) 6.3 V

1

Pre-amp.

Drive Circuit

Ch.2 inverted-phase output pin

13

V

= 6.3 V

REF

15

Drive Circuit

15 kΩ

AN7198Z: 600 Ω
AN7199Z: 300 Ω

14  GND (output) 0 V

Grounding pin for ch.2 output

15 Ch.2 output pin (+) 6.3 V

1

Pre-amp.

Drive Circuit

Ch.2 positive-phase output pin

14

= 6.3 V

V

REF

15

Drive Circuit

15 kΩ

AN7198Z: 600 Ω
AN7199Z: 300 Ω

■ 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 VCC and short circuit to GND, and load short-circuit. There is a danger of destruction under
a special condition.

4. The temperature protection circuit will be actuated at T
chip temperature drops below the above set level.

5. The overvoltage protection circuit starts its operation at V

6. Take into consideration the heat radiation design particularly when V

7. When the beep sound function is not used, open the beep sound input pin (pin10) or connect it to pin 9 with
around 0.01 µF capacitor.

8. Connect only pin 9 (ground, signal source) to the signal GND of the amplifier in the previous stage. The characteristics
such as distortion, etc. will be improved.

6

= approx. 150°C, but it is automatically reset when the

j

= approx. 20 V.

CC

is set high or when the load is 2 Ω.

CC