Datasheet TDA7056B-N1-S5, TDA7056B-N1 Datasheet (Philips)

DATA SH EET

Product specification
Supersedes data of 1996 May 28
File under Integrated Circuits, IC01

1997 Aug 15

INTEGRATED CIRCUITS

TDA7056B

5 W mono BTL audio amplifier with
DC volume control

1997 Aug 15 2

Philips Semiconductors Product specification

5 W mono BTL audio amplifier with DC
volume control

TDA7056B

FEATURES

• DC volume control

• Few external components

• Mute mode

• Thermal protection

• Short-circuit proof

• No switch-on and switch-off clicks

• Good overall stability

• Low power consumption

• Low HF radiation

• ESD protected on all pins.

GENERAL DESCRIPTION

The TDA7056B is a mono Bridge-Tied Load (BTL) output
amplifier with DC volume control.
It is designed for use in TV and monitors, but is also
suitable for battery-fed portable recorders and radios.
The device is contained in a 9-pin medium power
package.

A Missing Current Limiter (MCL) is built in. The MCL circuit
is activated when the difference in current between the
output terminal of each amplifier exceeds 100 mA
(300 mA typ.). This level of 100 mA allows for headphone
applications (single-ended).

QUICK REFERENCE DATA

ORDERING INFORMATION

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

P

supply voltage 4.5 − 18 V

P

O

output power VP=12V

R

L

=16Ω 3 3.5 − W

R

L

=8Ω 5 5.5 − W

G

v(max)

maximum total voltage gain 39.5 40.5 41.5 dB
φ gain control 68 73.5 − dB
I

q(tot)

total quiescent current VP= 12 V; RL= ∞− 9.2 13 mA
THD total harmonic distortion P

O

= 0.5 W − 0.3 1 %

TYPE

NUMBER

PACKAGE

NAME DESCRIPTION VERSION

TDA7056B SIL9MPF

plastic single in-line medium power package with fin; 9 leads

SOT110-1

1997 Aug 15 3

Philips Semiconductors Product specification

5 W mono BTL audio amplifier with DC
volume control

TDA7056B

BLOCK DIAGRAM

Fig.1 Block diagram.

handbook, full pagewidth

input

7

MSA708 - 1

2

3

TDA7056B

V

P

5

6I + i

8

I – i

TEMPERATURE

PROTECTION

4

signal

ground

DC volume control

1

n.c.

positive output

negative output

power

ground

V

ref

STABILIZER

9

n.c.

PINNING

SYMBOL PIN DESCRIPTION

n.c. 1 not connected
V

P

2 positive supply voltage

V

I

3 voltage input
GND1 4 signal ground
VC 5 DC volume control
OUT+ 6 positive output
GND2 7 power ground
OUT− 8 negative output
n.c. 9 not connected

Fig.2 Pin configuration.

handbook, halfpage

MSA707

1
2
3
4
5
6
7
8
9

I

V

TDA7056B

n.c.
V

P

OUT

GND2

OUT

GND1

VC

n.c.

1997 Aug 15 4

Philips Semiconductors Product specification

5 W mono BTL audio amplifier with DC
volume control

TDA7056B

FUNCTIONAL DESCRIPTION

The TDA7056B is a mono BTL output amplifier with DC
volume control, designed for use in TV and monitor but is
also suitable for battery-fed portable recorders and radios.

In conventional DC volume circuits the control or input
stage is AC coupled to the output stage via external
capacitors to keep the offset voltage low. In the TDA7056B
the DC volume control stage is integrated into the input
stage so that no coupling capacitors are required. With this
configuration, a low offset voltage is still maintained and
the minimum supply voltage remains low.

The BTL principle offers the following advantages:

• Lower peak value of the supply current

• The frequency of the ripple on the supply voltage is twice

the signal frequency.

Consequently, a reduced power supply with smaller
capacitors can be used which results in cost reductions.
For portable applications there is a trend to decrease the
supply voltage, resulting in a reduction of output power at
conventional output stages. Using the BTL principle
increases the output power.

The maximum gain of the amplifier is fixed at 40.5 dB.
The DC volume control stage has a logarithmic control
characteristic. Therefore, the total gain can be controlled
from 40.5 dB to −33 dB. If the DC volume control voltage
falls below 0.4 V, the device will switch to the mute mode.

The amplifier is short-circuit proof to ground, V

P

and
across the load. Also a thermal protection circuit is
implemented. If the crystal temperature rises above
+150 °C the gain will be reduced, thereby reducing the
output power. Special attention is given to switch-on and
switch-off clicks, low HF radiation and a good overall
stability.

Power dissipation

Assume V

P

= 12 V; RL=16Ω.

The maximum sine wave dissipation is = 1.8 W.
The R

th vj-a

of the package is 55 K/W.

Therefore T

amb (max)

= 150 − 55 × 1.8 = 51 °C.

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

THERMAL CHARACTERISTICS

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

V

P

supply voltage − 18 V

V

3, 5

input voltage pins 3 and 5 − 5V

I

ORM

repetitive peak output current − 1.25 A

I

OSM

non-repetitive peak output current − 1.5 A

P

tot

total power dissipation T

case

< 60 °C − 9W

T

amb

operating ambient temperature −40 +85 °C

T

stg

storage temperature −55 +150 °C

T

vj

virtual junction temperature − +150 °C

T

sc

short-circuit time − 1h

SYMBOL PARAMETER VALUE UNIT

R

th j-a

thermal resistance from junction to ambient in free air 55 K/W

R

th j-c

thermal resistance from junction to case 10 K/W

1997 Aug 15 5

Philips Semiconductors Product specification

5 W mono BTL audio amplifier with DC
volume control

TDA7056B

CHARACTERISTICS

V

P

= 12 V; VDC= 1.4 V; f = 1 kHz; RL=16Ω; T

amb

=25°C; unless otherwise specified (see Fig.13).

Notes

1. With a load connected to the outputs the quiescent current will increase, the maximum value of this increase being
equal to the DC output offset voltage divided by R

L

.

2. The noise output voltage (RMS value) at f = 500 kHz is measured with RS=0Ω and B = 5 kHz.

3. The ripple rejection is measured with RS=0Ω and f = 100 Hz to 10 kHz. The ripple voltage VR of 200 mV
(RMS value) is applied to the positive supply rail.

4. The noise output voltage (RMS value) is measured with RS=5kΩ unweighted.

5. The DC volume control can be configured in several ways. Two possible circuits are shown in Figs 14 and 15.
The circuits at the volume control pin will influence the switch-on and switch-off behaviour and the maximum voltage
gain.

SYMBOL P ARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supply

V

P

positive supply voltage 4.5 − 18 V

I

q(tot)

total quiescent current note 1; RL= ∞−9.2 13 mA

Maximum gain (V

5

= 1.4 V)

P

O

output power THD = 10%; RL=16Ω 3 3.5 − W

THD = 10%; R

L

=8Ω 5 5.5 − W

THD total harmonic distortion P

O

= 0.5 W − 0.3 1 %

G

v(max)

maximum total voltage gain 39.5 40.5 41.5 dB

V

I

input signal handling (RMS value) G

v(max)

= 0 dB; THD < 1% 1.0 −−V

V

no

noise output voltage (RMS value) note 2; f = 500 kHz − 210 −µV
B bandwidth at −1dB − 0.02 to 300 − kHz
SVRR supply voltage ripple rejection note 3 34 38 − dB
∆V

O

 DC output offset voltage V8− v6−0 200 mV

Z

I

input impedance (pin 3) 15 20 25 kΩ

Mute position

V

O

output voltage in mute position note 4; V5≤ 0.4 V;

VI= 1.0 V

− 35 45 µV

DC volume control; note 5
φ gain control 68 73.5 − dB

I

5

control current V5=0V −20 −25 −30 µA

1997 Aug 15 6

Philips Semiconductors Product specification

5 W mono BTL audio amplifier with DC
volume control

TDA7056B

Fig.3 Gain control as a function of DC volume

control.

handbook, halfpage

0 2.0

40

−80

−120

0

MBH372

0.4 0.8 1.2 1.6

−40

G

v

(dB)

V (V)

DC

Fig.4 Noise output voltage as a function of DC

volume control.

Measured with RS=5kΩ unweighted.
Frequency range is 22 Hzto 22 kHz.

handbook, halfpage

20

V

no

(mV)

MBH365

1

10

−1

10

−2

0.4 0.8 1.2 1.6
VDC (V)

Fig.5 Control current as a function of DC volume

control.

handbook, halfpage

0 2.0

25

−15

−25

15

MBH376

0.4 0.8 1.2 1.6

−5

VDC (V)

5

I

DC

(µA)

Fig.6 Quiescent current versus supply voltage.

Measured with RL= ∞.

handbook, halfpage

020

15

5

MBH367

10

20

4

I

P

(mA)

81216

V

P

(V)

1997 Aug 15 7

Philips Semiconductors Product specification

5 W mono BTL audio amplifier with DC
volume control

TDA7056B

Fig.7 Total harmonic distortion versus output

power.

(1) RL16 Ω.
(2) RL=8Ω.

handbook, halfpage

10

6

4

2

0

MBH361

10

-1

1

PO (W)

THD

(%)

10

8

(1)

(2)

Fig.8 Total harmonic distortion versus frequency.

PO= 0.1 W.
(1) G

v(max)

=40dB.

(2) G

v(max)

=30dB.

handbook, halfpage

0

MBH362

10

2

4

6

8

10

−2

10

2

10

−1

110

f (kHz)

THD

(%)

(1)

(2)

Fig.9 Output power versus supply voltage.

Measured at a THD of 10%. The maximum output power is limited by
the maximum power dissipation and the maximum available output
current.

(1) R

L

=8Ω.

(2) RL=16Ω.

handbook, halfpage

020

10

0

2

MBH363

4

6

8

4

P

O

(W)

81216

V

P

(V)

(1)

(2)

Fig.10 Total worst case power dissipation versus

supply voltage.

(1) RL=8Ω.
(2) RL=16Ω.

handbook, halfpage

020

6

0

1

MBH364

2

3

5

4

4

P

d

(W)

81216

V

P

(V)

(1) (2)

1997 Aug 15 8

Philips Semiconductors Product specification

5 W mono BTL audio amplifier with DC
volume control

TDA7056B

Fig.11 Supply voltage ripple rejection versus

frequency.

handbook, halfpage

−70

−60

−50

−40

−30

−20

MBH374

10

−2

10

−1

11010

2

f (kHz)

SVRR

(dB)

(1)

(2)

Measured with VR= 0.2 V.
(1) VDC= 1.4 V.
(2) VDC= 0.4 V.

Fig.12 Input signal handling.

handbook, halfpage

020

2.0

0

0.4

MBH375

0.8

1.2

1.6

4

V

I

(V)

81216

V

P

(V)

Measured at a THD of 1% and a voltage gain of 0 dB.

1997 Aug 15 9

Philips Semiconductors Product specification

5 W mono BTL audio amplifier with DC
volume control

TDA7056B

TEST AND APPLICATION INFORMATION

For single-end application the output peak current may not exceed 100 mA; at higher output currents the short circuit
protection (MLC) will be activated.

Fig.13 Test and application diagram.

To avoid instabilities and too high distortion, the input- and power ground must be separated as long as possible and connected together as close as
possible to the IC.

(1) This capacitor can be omitted if the 220 µF electrolytic capacitor is connected close to pin 2.

handbook, full pagewidth

input

0.47 µF

7

MSA709 - 2

100 nF 220 µF

2

3

TDA7056B

VP = 12 V

(1)

5

I − i

5 kΩ

R

S

6

8

STABILIZER

TEMPERATURE

PROTECTION

4

ground

DC

volume

control

RL = 8 Ω

1

n.c.

9

n.c.

I + i

+

−

1997 Aug 15 10

Philips Semiconductors Product specification

5 W mono BTL audio amplifier with DC
volume control

TDA7056B

Fig.14 Application with potentiometer as volume

control; maximum gain = 34 dB.

handbook, halfpage

MSA710

5

volume

control

1 MΩ1 µF

Fig.15 Application with potentiometer as volume

control; maximum gain = 40 dB.

handbook, halfpage

MBH366

5

volume
control

VP = 12 V

22 kΩ

100 kΩ

1 µF

1997 Aug 15 11

Philips Semiconductors Product specification

5 W mono BTL audio amplifier with DC
volume control

TDA7056B

PACKAGE OUTLINE

UNIT

A

A

max.

2

A

3

b

1

D

1

b

2

bcD

(1)

E

(1)

Z

max.

(1)

eLPP

1

q1q

2

q

REFERENCES

OUTLINE
VERSION

EUROPEAN

PROJECTION

ISSUE DATE

IEC JEDEC EIAJ

mm

18.5

17.8

3.7

8.7

8.0

A

4

15.8

15.4

1.40

1.14

0.67

0.50

1.40

1.14

0.48

0.38

21.8

21.4

21.4

20.7

6.48

6.20

3.4

3.2

2.54

1.0

5.9

5.7

4.4

4.2

3.9

3.4

15.1

14.9

Q

1.75

1.55

DIMENSIONS (mm are the original dimensions)

Note

1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.

2.75

2.50

SOT110-1

92-11-17
95-02-25

0 5 10 mm

scale

0.25

w

D

E

A

A

c

A

2

3

A

4

q

1

q

2

L

Q

w M

b

b

1

b

2

D

1

P

q

1

Z

e

19

P

seating plane

pin 1 index

SIL9MPF: plastic single in-line medium power package with fin; 9 leads

SOT110-1

1997 Aug 15 12

Philips Semiconductors Product specification

5 W mono BTL audio amplifier with DC
volume control

TDA7056B

SOLDERING
Introduction

There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.

This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our

“IC Package Databook”

(order code 9398 652 90011).

Soldering by dipping or by wave

The maximum permissible temperature of the solder is
260 °C; solder at this temperature must not be in contact
with the joint for more than 5 seconds. The total contact
time of successive solder waves must not exceed
5 seconds.

The device may be mounted up to the seating plane, but
the temperature of the plastic body must not exceed the
specified maximum storage temperature (T

stg max

). If the
printed-circuit board has been pre-heated, forced cooling
may be necessary immediately after soldering to keep the
temperature within the permissible limit.

Repairing soldered joints

Apply a low voltage soldering iron (less than 24 V) to the
lead(s) of the package, below the seating plane or not
more than 2 mm above it. If the temperature of the
soldering iron bit is less than 300 °C it may remain in
contact for up to 10 seconds. If the bit temperature is
between 300 and 400 °C, contact may be up to 5 seconds.

DEFINITIONS

LIFE SUPPORT APPLICATIONS

These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.

Data sheet status

Objective specification This data sheet contains target or goal specifications for product development.
Preliminary specification This data sheet contains preliminary data; supplementary data may be published later.
Product specification This data sheet contains final product specifications.

Limiting values

Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.

Application information

Where application information is given, it is advisory and does not form part of the specification.

1997 Aug 15 13

Philips Semiconductors Product specification

5 W mono BTL audio amplifier with DC
volume control

TDA7056B

NOTES

1997 Aug 15 14

Philips Semiconductors Product specification

5 W mono BTL audio amplifier with DC
volume control

TDA7056B

NOTES

1997 Aug 15 15

Philips Semiconductors Product specification

5 W mono BTL audio amplifier with DC
volume control

TDA7056B

NOTES

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© Philips Electronics N.V. 1997 SCA55
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Printed in The Netherlands 547027/1200/03/pp16 Date of release: 1997Aug 15 Document order number: 9397 750 02728