Datasheet AN7174K Datasheet (Panasonic)

ICs for Audio Common Use

■ Overview

The AN7174K is an integrated circuit for 14W (13.2V, 4Ω) output power amplifier circuit. Two BTL amplifiers are built-in on a single chip and stereo operation is possible. It is highly reliable due to protection circuits built-in. The built-in stand-by circuit makes it possible to switch the circuit ON/OFF with a charge mode to power supply pin.

■ Features

•

High output power (BTL 14W × 2)

•

Stand-by circuit built-in

•

Protection circuits built-in (temperature, overvoltage,

V

OUT

– GND short, Load short, V

OUT–VCC

short)

•

Low shock noise from power ON/OFF operation

•

Fewer external parts

•

Highly stable operation

AN7174K

Dual BTL 14W Audio Power Amplifier Circuit

Unit : mm

6.33±0.5

29.6±0.3

5.9±0.25 7.7±0.3 7.8±0.5

1

16

29.96±0.3

0.6±0.21.778

ø 3.6

28.0±0.3

20.0±0.25

R1.8

0.6

1.2±0.1

3.5±0.3

2.66

2.8±0.3

12.5±0.3

(14.1)

(4.06)

2.54±0.8

(0.25)

1.45±0.25

1.8±0.25

(1.2)

1.45±0.25

16-Lead ZIP Package with Fin (EZIP016-P-0660)

■ Block Diagram

7

8

1

V

CC

13

6

5

10

GND

Input Circuit

Stand – by Circuit

Input Circuit

11 9

Input Circuit

Driver Circuit

Protection Circuit

Driver Circuit

Output Circuit

4

3

GND

2

1612 15

GND

14

ICs for Audio Common Use

AN7174K

■ Absolute Maximum Ratings (Ta= 25˚C)

VCC

V

CC (surge)

I

CC

P

D

T

opr

T

stg

Supply Voltage

Note 1)

Peak Supply Voltage

Note 2)

Supply Current Power Dissipation

Note 3)

Operating Ambient Temperature Storage Temperature

V V

A W ˚C ˚C

Parameter Symbol Rating Unit

24 50

6

62.5

– 30 ~ + 75

– 55 ~ + 150

Note 1) No Signal Note 2) Time= 0.2s Note 3) R

θj– c

= 2˚C/W

■ Recommended Operating Range (Ta = 25˚C)

8V ~ 18V

Parameter Symbol Range

Operating Supply Voltage Range

V

CC

Parameter Symbol Condition min. typ. max. Unit Quiescent Circuit Current Output Noise Voltage Voltage Gain Total Harmonic Distortion Maximum Output Power (4Ω) Ripple Rejection Ratio Output Offset Voltage Channel Balance Total Harmonic Distortion Total Harmonic Distortion Frequency Characteristics Frequency Characteristics Quiescent Circuit Current at Stand-by Pin Crosstalk

I

CQ

Vno

*

G

V

THD

P

O

RR

*

V

O (offset)

CB THD THD

f

CH

f

CL

I

CQ (STBY–ON)

CT

V

in

= 0mV

V

in

= 0mV, Rg= 10kΩ

V

in

= 5mV

V

in

= 5mV THD= 10% Rg=

0Ω, Vin=

0mV, Ripple= 300mV, 120Hz Vin= 0mV V

in

= 5mV

V

in

= 5mV, 100Hz

V

in

= 5mV, 10kHz

V

in

= 5mV, –3dB down

V

in

= 5mV, –3dB down Stand-by Pin ON V

in

= 5mV, Rg= 10kΩ

50.5

9

35

–300

–1

120

0.6

52.5

0.2

12.5 40

0 0

0.26

0.45 22 21 21 61

200

1.5

54.5

0.75

300

1

mA mV

dB

%

W

dB

mV

dB

% %

kHz

Hz

µA

dB

*

With 15Hz ~ 30kHz (12dB/oct) filter

■ Electrical Characteristics (V

CC

= 13.2V, RL= 4Ω, f = 1kHz, Ta = 25˚C)

20

16

12

8

4

0

Supply Voltage V

CC

(V)

Maximum Output P

O

(W)

120 4 8 2016

GV, THD – f

54

52

50

48

46

Frequency f (Hz)

100k10 1k 10k

1.0

0.8

0.6

0.4

0.2

0

100

Total Harmonic Distortion THD (%)

PO, THD – V

in

100

10

1

0.1

0.01

Input Voltage V

in

(mV)

Output Power P

O

(W)

Voltage Gain G

V

(dB)

1000.1 1 10

100

10

1

0.1

0.01

Total Harmonic Distortion THD (%)

PO – VCC

V

CC

= 13.2V

R

L

= 4Ω

P

O

= 1W

THD

P

O

THD

G

V

f =

1kHz

THD

=

10%

R

L

=

4Ω

V

CC

= 13.2V

R

L

= 4Ω

f

= 1kHz

■ Characteristics Curve

ICs for Audio Common Use

AN7174K

52

50

48

46

44

42

40

38

36

Supply Voltage V

CC

(V)

Voltage Gain G

V

(dB)

873 4 65 11109

PD – Ta

65 60 55 50 45 40 35 30 25 20 15 10

5 0

Ambient Temperature Ta (˚C)

1501250 7550 10025

G

V

I

CQ

– V

CC

200

160

120

80

40

0

Supply Voltage V

CC

(V)

Quiescent Circuit Current I

CQ

(mA)

Power Dissipation P

D

(W)

204 8 12 16

GV, THD – V

CC

10

9

8

7

6

5

4

3

2

1

0

Total Harmonic Distortion THD (%)

(1) (2)

(3) (4)

Tc – Ta With a 100cm2 × 3

mm Al (Black color coated) or a heat sink (not lacquered) With a 100cm2 × 2 mm Al Witout heat sink

(R

θj – c

=

2˚C/W)

f = 1kHz R

L

= 4Ω

V

in

= 3mV

3.0W

(1)

(4)

20.8W

(2)

15.6W

(3)

62.5W

THD

1

5

6

7

8

10

12

11

9

2

3

4

16

15

14

13

200Ω

100µF

1µF

IN Ch.1

0.047µF

200Ω

100µF

0.47µF

1µF

– +

IN Ch.2

GND (Input side)

2000µF

V

CC=

13.2V

–

+

V

CC

OUT Ch.1

4Ω

0.1 µF

2.2Ω

0.1µF

2.2Ω

Ripple Filter Pin

200µF

OUT Ch.2

4Ω

0.1 µF

2.2

Ω

0.1µF

2.2

Ω

(STAND-BY)

0V (stand-by mode)

+5V (Normal ON mode)

Note) 300mV, 120Hz ripple component should be applied at the measurement of ripple rejection ratio.

GND

AN7174K

–

+

–

+

–

+

– +

■ Application Circuit

ICs for Audio Common Use

AN7174K

■ Pin Descriptions

Equivalent Circuit

Pin No.

1

Pin Name

2

4

5

7

10

3

Supply Pin

Output Ch.1

GND (Output Ch.1)

Output Ch.1

Stand-by

GND (Input)

Supply connection pin

GND pin for Ch.1 output

Ch.1 negative feedback pin (+)

Ch.1 positive-phase output pin

Ch.1 reverse-phase output pin

Negative Feedback Ch.1

GND pin for input signal source

Circuit mode (stand-by operation) switching pin

Description

6

Input Ch.1 Ch.1 input signal applied pin

8

Ch.1 negative feedback pin (–)Negative Feedback Ch.1

9

Ch.2 negative feedback pin (–)Negative Feedback Ch.2

11

Ch.2 negative feedback pin (+)Negative Feedback Ch.2

4

9

6

7

8

11

2

5

ICs for Audio Common Use

AN7174K

■ Precautions on use

1. Thermal breaking protection

The protective operation starts at the chip temperature of 150˚C±5˚C.

2. Overvoltage protection The protective operation starts at V

CC

– 26V.

3. Ground fault protection The protective operation starts when the contact resistance dropped below 0.3Ω.

4. Load shortcircuit protection The protective operation starts when the contact resistance dropped below 0.3Ω.

5. Atmospheric fault protection The protective operation starts only when a shortcircuit between pins occurred.

6. TAB shortcircuit Even TAB short-circuiting with the GND potential causes no breaking trouble.

7. The operation remains normal even when the load is 2Ω.

8. When the chip temperature abnormally rose, the temperature protection circuit gets actuated, but it is automatically reset when the chip temperature dropped below the set level.

■ Pin Descriptions (Cont.)

Equivalent Circuit

Pin No.

Pin Name

12

15

GND (Output Ch.2)

Ch.2 input signal applied pinInput Ch.2

GND pin for Ch.2 output

Description

13

Supply ripple rejection pinRipple Filter

14

Ch.2 reverse-phase output pinOutput Ch.2

16

Ch.2 positive-phase output pinOutput Ch.2

14

12

16

13

Datasheet AN7174K Datasheet (Panasonic)

Specifications and Main Features

Frequently Asked Questions

User Manual