ST TDA7265B User Manual

30 W + 30 W stereo amplifier with mute and standby

Features

■ Wide-range supply voltage (up to ± 35 V ABS

max.)

■ Split supply

■ High output power

■ 30 W + 30 W at THD=10%, R

■ 25 W + 25 W at THD=1%, R

■ No “pop” at turn-on/off

■ Mute (“pop-free”)

■ Standby feature (low I

Q

■ Short-circuit protection

■ Thermal overload protection

Description

= 8 Ω, VS ± 23 V

L

= 8 Ω, VS ± 23 V

L

)

TDA7265B

Multiwatt11 (vertical)

applications such as home entertainment
systems and stereo TV sets.

The device is pin-to-pin compatible with the
TDA7265, TDA7269A and TDA7292.

Table 1. Device summary

The TDA7265B is class-AB dual audio power
amplifier assembled in the Multiwatt package,
especially designed for high-quality sound

Figure 1. Typical application circuit in split supply

15K

1µF

+5V

µP

1µF

1µF

MUTE/

ST-BY

IN (L)

18K15K

GND

IN (R)

D94AU085

5

7

9

11

+

-

-

+

1

1000mF

Order code Package Packing

TDA7265B Multiwatt11 (vertical) Tube

+V

S

1000μF

3

OUT (L)

4

18K

IN- (L)

8

IN- (R)

10

OUT (R)

2

6

-V

S

560Ω

18K

4.7Ω

100nF

100nF

560Ω

4.7Ω
RL (L)

RL (R)

December 2011 Doc ID 022601 Rev 1 1/18

www.st.com

1

Contents TDA7265B

Contents

1 Pin connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

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

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

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

2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 Typical operating characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4 Mute standby function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

5 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

5.1 Stereo configuration circuit and PCB layout . . . . . . . . . . . . . . . . . . . . . . . 11

5.2 Application suggestions for stereo configuration . . . . . . . . . . . . . . . . . . . 13

5.3 Single supply circuit configuration and PCB layout . . . . . . . . . . . . . . . . . 14

6 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

7 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

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TDA7265B 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 characteristcs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Table 5. Recommended values of the external components in the TDA7265B demonstration

board schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Table 6. Mute, standby truth table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Table 7. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Doc ID 022601 Rev 1 3/18

List of figures TDA7265B

List of figures

Figure 1. Typical application circuit in split supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

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

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

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

Figure 5. THD vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 6. Output power vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 7. Quiescent current vs. pin 5 voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 8. Attenuation vs. pin 5 voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 9. Crosstalk vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 10. Power dissipation vs. output power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 11. Mute/standby thresholds on pin 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Figure 12. Test and application circuit (stereo configuration) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 13. Soldering side (bottom). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Figure 14. Component side (top) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 15. Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Figure 16. Typical application circuit in single supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 17. Soldering side (bottom). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Figure 18. Component side (top) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 19. Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Figure 20. Multiwatt 11 (vertical) mechanical data & package dimensions . . . . . . . . . . . . . . . . . . . . . 16

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TDA7265B Pin connections

1 Pin connections

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 022601 Rev 1 5/18

Electrical specifications TDA7265B

2 Electrical specifications

2.1 Absolute maximum ratings

Table 2. Absolute maximum ratings

Symbol Description Value Unit

T

V

S

I

O

P

tot

T

op

stg, Tj

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

Storage and junction temperature -40 to +150 °C

2.2 Thermal data

Table 3. Thermal data

Symbol Parameter Value Unit

R

th j case

Thermal resistance junction-casetyp. 1.5 °C/W

2.3 Electrical characteristics

Refer to the test circuit, VS = ± 23 V; RL = 8 Ω; Rs = 50 Ω; GV = 30 dB; f = 1 kHz;

Tamb = 25 °C, unless otherwise specified.

Table 4. Electrical characteristcs

Symbol Parameter Test condition Min. Typ. Max. Unit

V

Supply range ±8 ±33 V

S

Total quiescent current 50 130 mA

I

q

V

I

Peak

THD Total harmonic distortion R

Input offset voltage –20 +20 mV

OS

I

Non-inverting input bias current 500 nA

b

P

O

Output power

THD = 10%; R

THD = 1%; R

= 8 Ω 30 W

L

= 8 Ω 25 W

L

Output peak current (Internally limited) 3.6 4 A

= 8 Ω, Po = 1 W 0.02 %

L

Crosstalk f = 1 kHz 70 dB

C

T

SR Slew rate 11 V/ms

Gol Open-loop voltage gain 80 dB

Total input noise F = 20 Hz – 22 kHz 4 µV

e

N

Ri Input resistance 20 kΩ

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