Datasheet TDA7052A Specification

INTEGRATED CIRCUITS

DATA SH EET

TDA7052A/AT

1 W BTL mono audio amplifier with
DC volume control

Product specification
File under Integrated circuits, IC01

July 1994

Philips Semiconductors Product specification

1 W BTL mono audio amplifier with DC

TDA7052A/AT

volume control

FEATURES

• DC volume control

• Few external components

• Mute mode

• Thermal protection

• Short-circuit proof

• No switch-on and off clicks

• Good overall stability

• Low power consumption

• Low HF radiation

• ESD protected on all pins

QUICK REFERENCE DATA

SYMBOL PARAMETERS CONDITIONS MIN. TYP. MAX. UNIT

V

P

P

O

positive supply voltage range 4.5 − 18 V
output power

TDA7052A R
TDA7052AT R

G

v

maximum total voltage gain 34.5 35.5 36.5 dB
φ gain control range 75 80 − dB
I

P

total quiescent current VP = 6 V; RL = ∞−712mA
THD total harmonic distortion

TDA7052A P
TDA7052AT P

GENERAL DESCRIPTION

The TDA7052A/AT are mono BTL output amplifiers with
DC volume control. They are designed for use in TV and
monitors, but also suitable for battery-fed portable
recorders and radios.

Missing Current Limiter (MCL)

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

= 8 Ω; VP = 6 V 1.0 1.1 − W

L

= 16 Ω; VP = 6 V 0.5 0.55 − W

L

= 0.5 W − 0.3 1 %

O

= 0.25 W − 0.3 1 %

O

ORDERING INFORMATION

EXTENDED TYPE

NUMBER

PINS PIN POSITION MATERIAL CODE

PACKAGE

TDA7052A 8 DIL plastic SOT97
TDA7052AT 8 mini-pack plastic SOT96A

Notes

1. SOT97-1; 1996 September 10.

2. SOT96-1; 1996 September 10.

July 1994 2

(1)

(2)

Philips Semiconductors Product specification

1 W BTL mono audio amplifier with DC
volume control

handbook, full pagewidth

n.c.

positive input

DC volume

control

7

TDA7052A
TDA7052AT

2

4

V

ref

STABILIZER

TEMPERATURE

PROTECTION

TDA7052A/AT

V

P

1

I + i

3

5

positive output

8I – i

negative output

6

MCD385 - 1

PINNING

SYMBOL PIN DESCRIPTION

V

P

1 positive supply voltage
IN+ 2 positive input
GND1 3 signal ground
VC 4 DC volume control
OUT+ 5 positive output
GND2 6 power ground
n.c 7 not connected
OUT− 8 negative output

Fig.1 Block diagram.

handbook, halfpage

V

IN +

GND1

VC

P

power

ground

1
2
3
4

TDA7052A

TDA7052AT

signal

ground

Fig.2 Pin configuration.

MCD384

8
7
6
5

OUT –
n.c.
GND2
OUT +

July 1994 3

Philips Semiconductors Product specification

1 W BTL mono audio amplifier with DC
volume control

FUNCTIONAL DESCRIPTION

The TDA7052A/AT are mono BTL output amplifiers with
DC volume control, designed for use in TV and monitors
but 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 TDA7052A/AT the DC volume control stage is
integrated into the input stage so that no coupling
capacitors are required and yet a low offset voltage is
maintained. At the same time the minimum supply 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.

TDA7052A/AT

Thus a reduced power supply with smaller capacitors can
be used which results in cost savings.

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 35.5 dB. The
DC volume control stage has a logarithmic control
characteristic.

The total gain can be controlled from 35.5 dB to −44 dB. If
the DC volume control voltage is below 0.3 V, the device
switches to the mute mode.

The amplifier is short-circuit proof to ground, V
across the load. Also a thermal protection circuit is
implemented. If the crystal temperature rises above
+150 °C the gain will be reduced, so the output power is
reduced.

Special attention is given to switch on and off clicks, low
HF radiation and a good overall stability.

and

P

LIMITING VALUES

In accordance with the Absolute Maximum System (IEC 134)

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

V
I

ORM

I

OSM

P

P

tot

supply voltage range − 18 V
repetitive peak output current − 1.25 A
non-repetitive peak output current − 1.5 A
total power dissipation T

amb

≤ 25%
TDA7052A − 1.25 W
TDA7052AT − 0.8 W

T

amb

T

stg

T

vj

T

sc

V

2

V

4

operating ambient temperature range −40 +85 °C
storage temperature range −55 +150 °C
virtual junction temperature − +150 °C
short-circuit time − 1hr
input voltage pin 2 − 8V
input voltage pin 4 − 8V

July 1994 4

Philips Semiconductors Product specification

1 W BTL mono audio amplifier with DC

TDA7052A/AT

volume control

THERMAL RESISTANCE

SYMBOL PARAMETER THERMAL RESISTANCE

R

th j-a

Notes to the thermal resistance

TDA7052A: V
Therefore T

TDA7052AT: VP = 6 V; RL = 16 Ω. The maximum sine-wave dissipation is 0.46 W.
Therefore T

= 6 V; RL = 8 Ω. The maximum sine-wave dissipation is 0.9 W.

P

amb(max)

amb(max)

from junction to ambient in free air

TDA7052A 100 K/W
TDA7052AT 155 K/W

= 150 − 100 × 0.9 = 60 °C.

= 150 − 155 × 0.46 = 78 °C.

July 1994 5

Philips Semiconductors Product specification

1 W BTL mono audio amplifier with DC

TDA7052A/AT

volume control

CHARACTERISTICS

V

= 6 V; T

P

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

P

I

P

Maximum gain; V

P

O

THD total harmonic distortion

G

v

V

I

V

no(rms)

B bandwidth −1 dB − 20 Hz to

SVRR supply voltage ripple rejection note 3 38 46 − dB

|V

| DC output offset voltage − 0 150 mV

off

Z

I

Minimum gain; V

G

v

V

no(rms)

Mute position

V

O

DC volume control

φ gain control range 75 80 − dB
I

4

= 25 °C; f = 1 kHz; TDA7052A: RL = 8 Ω; TDA7052A T: RL = 16 Ω; unless otherwise specified (see Fig.6).

amb

positive supply voltage range 4.5 − 18 V
total quiescent current VP = 6 V; RL = ∞

− 712mA

note 1

= 1.4 V

4

output power THD = 10%

TDA7052A 1.0 1.1 − W
TDA7052AT 0.5 0.55 − W

TDA7052A P
TDA7052AT P

= 0.5 W − 0.3 1 %

O

= 0.25 W − 0.3 1 %

O

voltage gain 34.5 35.5 36.5 dB
input signal handling V4 = 0.8 V; THD < 1% 0.5 0.65 − V
noise output voltage (RMS value) f = 500 kHz; note 2 − 210 −µV

−

300 kHz

input impedance (pin 2) 15 20 25 kΩ

= 0.5 V

4

voltage gain −−44 − dB
noise output voltage (RMS value) note 4 − 20 30 µV

output voltage in mute position V4≤ 0.3 V; VI = 600 mV −− 30 µV

control current V4 = 0.4 V 60 70 80 µA

Notes to the characteristics

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 dividend by R

.

L

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

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

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

July 1994 6

Philips Semiconductors Product specification

1 W BTL mono audio amplifier with DC
volume control

40

handbook, halfpage

gain
(dB)

20

0

– 20

– 40

– 60

– 80

0 1.2 2.00.4 1.60.8

MCD388

V (V)

4

1000

handbook, halfpage

V

noise
(µV)

800

600

400

200

0

0 1.2 2.0

0.4 1.60.8

TDA7052A/AT

MCD389 - 1

V (V)

4

Fig.3 Gain control as a function of DC volume control.

100

handbook, halfpage

I

4

(µA)

60

20

– 20

– 60

– 100

0 1.2 2.0

0.4 1.60.8

MCD390 - 1

V (V)

4

Fig.4 Noise output voltage as a function of DC

volume control.

Fig.5 Control current as a function of DC volume

control.

July 1994 7

Philips Semiconductors Product specification

1 W BTL mono audio amplifier with DC
volume control

APPLICATION INFORMATION

handbook, full pagewidth

7

positive

input

R

n.c.

0.47 µF

5 kΩ

S

DC
volume
control

2

4

TDA7052A
TDA7052AT

STABILIZER TEMPERATURE

V

ref

PROTECTION

1

I + i

(1)

100 nF 220 µF

5

8I – i

6

3

TDA7052A/AT

V = 6 V

P

R = 8 Ω

L

(TDA7052A)

R = 16 Ω

L

(TDA7052A/AT)

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

Fig.6 Test and application diagram.

handbook, halfpage

volume

control

1 MΩ1 µF

4

MCD387

Fig.7 Application with potentiometer as volume

control; maximum gain = 30 dB.

MCD386 - 1

ground

July 1994 8

Philips Semiconductors Product specification

1 W BTL mono audio amplifier with DC
volume control

PACKAGE OUTLINES

DIP8: plastic dual in-line package; 8 leads (300 mil)

D

seating plane

L

Z

b

e

b

8

1

5

A

A

1

w M

b

2

TDA7052A/AT

SOT97-1

M

E

2

A

c

(e )

1

M

H

pin 1 index

E

1

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

A

A

A

UNIT

max.

mm

inches

Note

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

OUTLINE
VERSION

SOT97-1

12

min.

max.

050G01 MO-001AN

b

1.73

1.14

0.068

0.045

IEC JEDEC EIAJ

0.021

0.015

b

1

0.53

0.38

4

0 5 10 mm

scale

b

2

0.36

1.07

0.23

0.89

0.014

0.042

0.009

0.035

REFERENCES

(1) (1)

cD E e M

9.8

9.2

0.39

0.36

6.48

6.20

0.26

0.24

L

e

1

M

3.60

8.25

3.05

7.80

0.14

0.32

0.12

0.31

EUROPEAN

PROJECTION

E

10.0

0.39

0.33

H

8.3

w

max.

0.2542.54 7.62

1.154.2 0.51 3.2

0.010.10 0.30

0.0450.17 0.020 0.13

ISSUE DATE

92-11-17
95-02-04

(1)

Z

July 1994 9

Philips Semiconductors Product specification

1 W BTL mono audio amplifier with DC
volume control

SO8: plastic small outline package; 8 leads; body width 3.9 mm

D

c

y

Z

8

5

TDA7052A/AT

SOT96-1

E

H

E

A

X

v M

A

A

pin 1 index

1

e

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

mm

A

max.

1.75

0.069

A1A2A

0.25

1.45

0.10

1.25

0.010

0.057

0.004

0.049

0.25

0.01

b

3

p

0.49

0.25

0.36

0.19

0.019

0.0100

0.014

0.0075

UNIT

inches

Notes

1. Plastic or metal protrusions of 0.15 mm maximum per side are not included.

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

4

w M

b

p

0 2.5 5 mm

scale

(1)E(2)

cD

5.0

4.8

0.20

0.19

eHELLpQZywv θ

4.0

1.27

3.8

0.16

0.050

0.15

2

A

6.2

5.8

0.244

0.228

Q

3

A

θ

0.25 0.10.25

0.010.010.041 0.004

0.7

0.3

0.028

0.012

(1)

o

8

o

0

L

p

L

0.7

0.6

0.028

0.024

(A )

1

detail X

1.0

1.05

0.4

0.039

0.016

OUTLINE

VERSION

SOT96-1

IEC JEDEC EIAJ

076E03S MS-012AA

REFERENCES

July 1994 10

EUROPEAN

PROJECTION

ISSUE DATE

95-02-04
97-05-22

Philips Semiconductors Product specification

1 W BTL mono audio amplifier with DC
volume control

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”

DIP

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

R

EPAIRING 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.

SO

REFLOW SOLDERING
Reflow soldering techniques are suitable for all SO

packages.

(order code 9398 652 90011).

). If the

stg max

TDA7052A/AT

Several techniques exist for reflowing; for example,
thermal conduction by heated belt. Dwell times vary
between 50 and 300 seconds depending on heating
method. Typical reflow temperatures range from
215 to 250 °C.

Preheating is necessary to dry the paste and evaporate
the binding agent. Preheating duration: 45 minutes at
45 °C.

AVE SOLDERING

W
Wave soldering techniques can be used for all SO

packages if the following conditions are observed:

• A double-wave (a turbulent wave with high upward
pressure followed by a smooth laminar wave) soldering
technique should be used.

• The longitudinal axis of the package footprint must be
parallel to the solder flow.

• The package footprint must incorporate solder thieves at
the downstream end.

During placement and before soldering, the package must
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.

Maximum permissible solder temperature is 260 °C, and
maximum duration of package immersion in solder is
10 seconds, if cooled to less than 150 °C within
6 seconds. Typical dwell time is 4 seconds at 250 °C.

A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.

R

EPAIRING SOLDERED JOINTS

Fix the component by first soldering two diagonally­opposite end leads. Use only a low voltage soldering iron
(less than 24 V) applied to the flat part of the lead. Contact
time must be limited to 10 seconds at up to 300 °C. When
using a dedicated tool, all other leads can be soldered in
one operation within 2 to 5 seconds between
270 and 320 °C.

Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
to the printed-circuit board by screen printing, stencilling or
pressure-syringe dispensing before package placement.

July 1994 11

Philips Semiconductors Product specification

1 W BTL mono audio amplifier with DC

TDA7052A/AT

volume control

DEFINITIONS

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.

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.

July 1994 12