ST TDA7292 User Manual

40 W + 40 W stereo amplifier with mute and standby

Features

■ Wide supply voltage range (up to ± 33 V)

■ Split supply

■ High output power

■ 40 W + 40 W into 8 Ω

with V

■ No “pop” at turn on/off

■ Mute (“pop”-free)

■ Standby feature (low I

■ Short-circuit protection

■ Thermal overload protection

Table 1. Device summary

= ±26 V and THD = 10%

S

)

q

TDA7292

Datasheet − production data

Multiwatt11

Description

The TDA7292 is a class-AB dual audio power
amplifier assembled in a Multiwatt package.

It has been specifically designed for high-quality
sound applications such as hi-fi music centers
and stereo TV sets.

Order code Operating temp. range Package Packaging

TDA7292 0° to 70° C Multiwatt11 Tube

Figure 1. Applications circuit

+V

S

OUT (L)

18K

IN- (L)

IN- (R)

OUT (R)

1000μF

4.7Ω

100nF

560Ω

560Ω

18K

4.7Ω

100nF

+5V

15K

1μF

μP

1μF

1μF

MUTE/

ST-BY

IN (L)

47K

18K15K

GND

IN (R)

D94AU085

5

7

9

11

+

-

-

+

1

1000μF

3

4

8

10

2

6

-V

S

RL (L)

RL (R)

February 2012 Doc ID 15775 Rev 5 1/22

This is information on a product in full production.

www.st.com

1

Contents TDA7292

Contents

1 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.3 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 Characterization curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4 Mute and standby modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5 Applications information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5.1 Applications with dual supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

5.2 Applications with single supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

2/22 Doc ID 15775 Rev 5

TDA7292 List of tables

List of tables

Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 3. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 4. Electrical specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 5. Mute and standby thresholds on pin 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Table 6. Recommended values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Table 7. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Doc ID 15775 Rev 5 3/22

List of figures TDA7292

List of figures

Figure 1. Applications circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Figure 2. Pin connections (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 3. Quiescent current vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 4. Frequency response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 5. Output power vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 6. Output power vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 7. Output power vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 8. THD vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 9. THD vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 10. THD vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 11. Quiescent current vs. voltage on pin 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 12. Attenuation vs. voltage on pin 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 13. Crosstalk vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 14. Power dissipation vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 15. Power dissipation vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 16. Power dissipation vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 17. Mute and standby thresholds on pin 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Figure 18. Test and applications circuit (dual supply) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 19. PCB layout, solder side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 20. PCB layout, component side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Figure 21. PCB component placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 22. Typical applications circuit (single supply) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 23. PCB layout, solder side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 24. PCB layout, component side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Figure 25. PCB component placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Figure 26. Multiwatt11 outline drawing and dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

4/22 Doc ID 15775 Rev 5

TDA7292 Pin description

1 Pin description

Figure 2. Pin connections (top view)

TAB CONNECTED TO PIN 6

11

10

IN+(1)

IN-(1)

9

8

7

6

5

4

3

2

1

D95AU316

GND

IN-(2)

IN+(2)

-V

S

MUTE/St-By

OUTPUT(2)

+V

S

OUTPUT(1)

-V

S

Doc ID 15775 Rev 5 5/22

Electrical specifications TDA7292

2 Electrical specifications

2.1 Absolute maximum ratings

Table 2. Absolute maximum ratings

Symbol Parameter Value Unit

V

S

I

O

P

tot

T

op

T

j

T

stg

DC supply voltage ±35 V

Output peak current (internally limited) 5 A

Power dissipation T

= 70°C 40 W

case

Operating temperature -20 to 85 °C

Junction temperature -40 to 150 °C

Storage temperature -40 to 150 °C

2.2 Thermal data

Table 3. Thermal data

Symbol Parameter Min Typ Max Unit

R

th j-case

Thermal resistance, junction to case - 1.5 - °C/W

2.3 Electrical specifications

Unless otherwise stated, the results in Ta bl e 4 below are given for the conditions:
V

=±26V, RL (load) = 8 Ω, RS (source) = 50 Ω, f = 1 kHz, GV = 30 dB, and T

S

See also the test circuit in Figure 18 on page 14.

Table 4. Electrical specifications

amb

=25°C.

Symbol Parameter Condition Min Typ Max Unit

V

S

I

q

V

OS

I

b

Supply voltage range - ±8 - ±33 V

Total quiescent current - - 50 130 mA

Output offset voltage - -20 - 20 mV

Non-inverting input bias current - - 500 - nA

THD = 10%:

= 8 Ω, VS = ±26 V

R

L

RL = 4 Ω, VS = ±18 V

P

o

Output power

THD = 1%:

= 8 Ω, VS = ±26 V

R

L

RL = 4 Ω, VS = ±18 V

I

Peak

THD Total harmonic distortion P

Peak output current Internally limited - 5 - A

= 1 W - 0.02 - %

o

6/22 Doc ID 15775 Rev 5

-

40

-

31

W

-

30

-

24

TDA7292 Electrical specifications

Table 4. Electrical specifications (continued)

Symbol Parameter Condition Min Typ Max Unit

C

T

Crosstalk f = 1 kHz - 70 - dB

SR Slew rate - - 11 - V/ms

G

OL

Open-loop gain - - 80 - dB

eN Total input noise f = 20 Hz to 22 kHz - 4 - µV

R

i

Input resistance - - 20 - kΩ

SVRR Supply voltage rejection ratio - - 75 - dB

T

j

Junction temperature at thermal
shut-down

- - 145 - °C

Mute mode (see also Table 5 on page 13)

VT

A

MUTE

MUTE

Mute/play threshold - -7 -6 -5 V

Mute attenuation - - 75 - dB

Standby mode (see also Table 5 on page 13)

VT

STBY

A

STBY

I

q_STBY

Standby/mute threshold - -3.5 -2.5 -1.5 V

Standby attenuation - - 110 - dB

Quiescent current in standby - - 8 - mA

Doc ID 15775 Rev 5 7/22