Panasonic AN7191NZ Datasheet

ICs for Audio Common Use

AN7191NZ

Dual 20 W BTL audio power amplifier

■ Overview

The AN7191NZ is an audio power IC developed for the sound output of car audio (dual 20 W). 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 subject of power IC protection, so the IC will largely contribute to a high reliability design of equipment. Also, it is incorporating a perfect muting circuit which is free from shock noise, so that a shock noise design under the set transient condition can be made easily using together with its standby function.

■ Features

•BTL 20 W × 2-channel (4 Ω), GV = 34 dB

•Built-in various protection circuits (thermal protection, short circuit to VCC and short circuit to GND, VCC-open short circuit to VCC , GND-open short circuit to GND, overvoltage and supply surge, and ASO, etc.)

Especially, the supply surge breakdown voltage is 100 V or more.

GND open breakdown voltage is 16 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 are 50 ms or less.

•Reduction in external components

It eliminates the need for NF and BS electrolytic capacitors.

Muting function is not required, and power supply choke coil is unnecessary.

•Provided with beep sound input pin

•2 Ω load guaranteed

■ Applications

• Car audio

			Unit : mm
18.00±0.30			4.00±0.20		3.25±0.10
13.50±0.30		1.50±0.10
φ3.60±0.10
		10.0±0.30	13.25±0.30	15.65±0.50	18.95±0.50
1		15	2.40±0.50
				R0.55
1.27	0.50+0–0..1020	(0.61)
		(1.80)	(1.95)
		(2.54)	0.25+0.15–0.05
19.00±0.30
19.30±0.30
HZIP015-P-0745A

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AN7191NZ

ICs for Audio Common Use

■ Block Diagram						filter
CC						Ripple
V
1						12
3				Ref.		14
Ch.1 GND						Ch.2 GND
4						13
Ch.1 out (−)						Ch.2 out (−)
		Att.	Protection cct.			Att.
2						15
Ch.1 out (+)		Att.		Att.con.		Ch.2 out (+)
						Att.
8	10	6	5	7	11	9
GND (sub)	Beep in	Ch.1 in	Standby	Mute	Ch.2 in	GND (input)

■ Pin Descriptions

Pin No.	Description	Pin No.	Description
1	Power supply	9	Grounding (input)
2	Ch.1 output (+)	10	Beep sound input
3	Grounding (output ch.1)	11	Ch.2 input
4	Ch.1 output (−)	12	Ripple filter
5	Standby	13	Ch.2 output (−)
6	Ch.1 input	14	Grounding (output ch.2)
7	Muting	15	Ch.2 output (+)

8Grounding (sub)

■Absolute Maximum Ratings

Parameter	Symbol	Rating	Unit
Supply voltage *2	V	25	V
	CC
Peak supply voltage *3	Vsurge	80	V
Supply current	ICC	9.0	A
Power dissipation *4	PD	59	W
Operating ambient temperature *1	Topr	−30 to +85	°C
Storage temperature *1	Tstg	−55 to +150	°C

Note) *1 : Ta = 25°C except power dissipation, operating ambient temperature and storage temperature. *2 : Without signal

*3 : Time = 0.2 s *4 : Ta = 85°C

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ICs for Audio Common Use									AN7191NZ
■ Recommended Operating Range
Parameter			Symbol		Range				Unit
Supply voltage			VCC		8.0 to 18.0					V
■ Electrical Characteristics at VCC = 13.2 V, freq. = 1 kHz, Ta = 25°C
Parameter	Symbol			Conditions		Min	Typ		Max		Unit
Quiescent current	ICQ		VIN = 0 mV, RL = 4 Ω				120		250		mA
Standby current	ISTB		VIN = 0 mV, RL = 4 Ω				1		10		µA
Output noise voltage *1	VNO		Rg = 4.7 kΩ, RL = 4 Ω				0.22		0.5		mV[rms]
Voltage gain 1	GV1		VIN = 40 mV, RL = 4 Ω			32	34		36		dB
Total harmonic distortion 1	THD1		Po = 0.5 W, RL = 4 Ω				0.07		0.4		%
Maximum output power 1	PO1		THD = 10%, RL = 4 Ω			16	18				W
Ripple rejection ratio *1	RR		RL = 4 Ω, Rg = 4.7 kΩ, Vr = 1 V[rms],			60	72				dB
			fr = 1 kHz
Channel balance	CB		VIN = 40 mV, RL = 4 Ω				0		1		dB
Cross-talk *1	CT		VIN = 40 mV, RL = 4 Ω, Rg = 4.7 kΩ			55	65				dB
Output offset voltage	VOFF		Rg = 4.7 kΩ, RL = 4 Ω			− 250	0		250		mV
Muting effect *1	MT		VIN = 40 mV, RL = 4 Ω			70	82				dB
Input impedance	Zi		VIN = ± 0.3 VDC			22	28		35		kΩ
Voltage gain 2	GV2		VIN = 40 mV, RL = 2 Ω			32	34		36		dB
Total harmonic distortion 2	THD2		Po = 0.5 W, RL = 2 Ω				0.1		0.5		%
Maximum output power 2	PO2		THD = 10%, RL = 2 Ω			16	24				W
Shock noise *2	VS		RL = 4 Ω, Rg = 4.7 kΩ, VMUTE = 5 V,			− 100	0		100		mV[p-0]
			VSTB = on/off, 50Hz HPF-on
Total harmonics distortion 3	THD3		VIN = 10 mV, fIN = 20 kHz, Rg = 4.7 kΩ,				0.10		0.5		%
			RL = ∞

Note) *1	: Measurement using a bandwidth 15 Hz to 30 kHz (12 dB/OCT) filter.
*2	: For VSTB = on/off, change over the standby terminal by the voltages of 0 V and 5 V at the time shown in the right.
	Standby terminal voltage	5 V

0 V
120 ms	120 ms

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AN7191NZ

ICs for Audio Common Use

■ Terminal Equivalent Circuits

Pin No.

Equivalent circuit

Description

DC voltage

1

Power supply connection pin

13.2 V

2

1

Pre-amp.

Ch.1 output pin (+) :

6.6 V

Drive circuit

Ch.1 positive-phase output pin.

2

VREF = 6.6 V

Drive circuit

3

30 kΩ

1.2 kΩ

3

GND (Output) :

0 V

Grounding pin for ch.1 output.

4

1

Pre-amp.

Ch.1 output pin (−) :

6.6 V

Drive circuit

Ch.1 reverse-phase output pin.

4

VREF = 6.6 V

Drive circuit

3

30 kΩ

1.2 kΩ

5

5

Standby control pin :

10 kΩ

Standby changeover pin threshold

voltage approx. 2.1 V.

900 Ω

6

6

Ch.1 input pin :

0 mV to

Approx.

Approx.

Ch.1 input signal applied pin input

10 mV

200 Ω

15 µA

15 µA

impedance 30 kΩ.

400 Ω

30 kΩ

7

Mute control pin :

7

5 kΩ

Mute changeover pin threshold volt-

age approx. 2.0 V.

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ICs for Audio Common Use					AN7191NZ
■ Terminal Equivalent Circuits (continued)
Pin No.	Equivalent circuit			Description	DC voltage
8				GND (sub) :	0 V
				Being connected to substrate only.
9				GND (input) :	0 V
				Ground pin for input.
10	1.2 kΩ	30 kΩ		Beep sound input pin :	2.1 V
VREF = 2.1 V	1.2 kΩ			Beep sound signal input pin.
			2	Input impedance 10 kΩ.
	20 kΩ
10	20 kΩ
	1.2 kΩ
VREF = 2.1 V	1.2 kΩ	30 kΩ	15
11				Ch.2 input pin :	1 mV to
11	Approx. Approx.			Ch.2 input signal applied pin.	10 mV
				Input impedance 30 kΩ.
200 Ω	15 µA 15 µA
	400 Ω
30 kΩ
12			VCC	Ripple filter pin :	13.0 V
				Output current 3 mA to 10 mA.
		30 kΩ
12
	1.2 mA 40 kΩ	200 µA
13				Ch.2 output pin (−) :	6.6 V
1	Drive circuit	Pre-amp.		Ch.2 reverse-phase output pin.
13
	Drive circuit	VREF = 6.6 V
15	30 kΩ	1.2 kΩ
14				GND (output) :	0 V
				Ground pin for ch.2 output.

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