DATASHEETS tda7053a DATASHEETS (Philips)

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INTEGRATED CIRCUITS

DATA SH EET

TDA7053A

Stereo BTL audio output amplifier with DC volume control

Objective speciﬁcation Supersedes data of May 1995 File under Integrated Circuits, IC01

1995 Nov 09

Philips Semiconductors Objective speciﬁcation

Stereo BTL audio output ampliﬁer with

TDA7053A

DC volume control

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.

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

out

supply voltage 4.5 − 18 V output power VP=6V

TDA7053A R

TDA7053AT R G G I

q(tot)

v C

voltage gain 39.5 40.5 41.5 dB gain control 68.0 73.5 − dB total quiescent current VP=6V; RL=∞−22 25 mA

THD total harmonic distortion

TDA7053A P

TDA7053AT P

out out

GENERAL DESCRIPTION

The TDA7053A (2 × 1 W) and TDA7053AT (2 × 0.5 W) are stereo BTL output amplifiers with DC volume control. The devices are designed for use in TV and monitors, but are 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).

=8Ω 0.85 1.0 − W

=16Ω 0.5 0.6 − W

= 0.5 W − 0.3 1 % = 0.25 W − 0.3 1 %

ORDERING INFORMATION

TYPE

NUMBER

TDA7053A DIP16 TDA7053AT SO16

NAME DESCRIPTION VERSION

plastic dual in-line package; 16 leads (300 mil); long body plastic small outline package; 16 leads; body width 7.5 mm

1995 Nov 09 2

PACKAGE

SOT38-1

SOT162-1

Philips Semiconductors Objective speciﬁcation

Stereo BTL audio output ampliﬁer with DC volume control

BLOCK DIAGRAM

TDA7053A

TDA7053AT

ref

STABILIZER

input 1

DC volume

control 1

I i

TEMPERATURE

PROTECTION

TDA7053A

positive

output 1

negative

output 1

input 2

DC volume

control 2

not

connected

1,3,11,15

I i

ΙΙ

I i

signal

ground

power

ground 1

Fig.1 Block diagram.

negative output 2

positive output 2

107

power

ground 2

MSA717 - 2

1995 Nov 09 3

Philips Semiconductors Objective speciﬁcation

Stereo BTL audio output ampliﬁer with DC volume control

PINNING

SYMBOL PIN DESCRIPTION

n.c. 1 not connected VC1 2 DC volume control 1 n.c. 3 not connected V

I (1)

I (2)

SGND 7 signal ground VC2 8 DC volume control 2 OUT2+ 9 positive output 2 PGND2 10 power ground 2 n.c. 11 not connected OUT2− 12 negative output 2 OUT1− 13 negative output 1 PGND1 14 power ground 1 n.c. 15 not connected OUT1+ 16 positive output 1

4 voltage input 1 5 positive supply voltage 6 voltage input 2

n.c.

VC1

n.c.

I (1)

I (2)

SGND

VC2

TDA7053A

TDA7053AT

5 6 7 8

MSA719 - 2

Fig.2 Pin configuration.

TDA7053A

OUT1

n.c.

PGND1

14 13

OUT1 OUT2

n.c.

PGND2

OUT2

FUNCTIONAL DESCRIPTION

The TDA7053A and TDA7053AT are stereo output amplifiers with two DC volume control stages, designed for TV and monitors, but also suitable for battery-fed portable recorders and radios.

In conventional DC volume control circuits the control or input stage is AC coupled to the output stage via external capacitors to keep the offset voltage low.

The two DC volume control stages are integrated into the input stages so that no coupling capacitors are required and a low offset voltage is still maintained. The minimum supply voltage also 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 stages have a logarithmic control characteristic. Therefore, the total gain can be controlled from +40.5 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 protected to ground, V

and

across the load. A thermal protection circuit is also 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.

1995 Nov 09 4

Philips Semiconductors Objective speciﬁcation

Stereo BTL audio output ampliﬁer with DC

TDA7053A

volume control

LIMITING VALUES

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

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

ORM

OSM

tot

amb

stg

THERMAL CHARACTERISTICS

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

amb

≤ 25 °C TDA7053A − 2.5 W TDA7053AT − 1.32 W

short-circuit time − 1hr input voltage pins 2, 4, 6 and 8 − 5V operating ambient temperature −40 +85 °C storage temperature −55 +150 °C virtual junction temperature − +150 °C

SYMBOL PARAMETER VALUE UNIT

th j-a

thermal resistance from junction to ambient in free air

TDA7053A 50 K/W TDA7053AT 95 K/W

Power dissipation

TDA7053A:

Assume V

= 6 V and RL=8Ω.

The maximum sine wave dissipation is 2 × 0.9 W = 1.8 W. The R

of the package is 50 K/W therefore T

th j-a

amb(max)

= 150 − (50 × 1.8) = 60 °C.

TDA7053AT:

Assume V

= 6 V and RL=16Ω.

The maximum sine wave dissipation is 2 × 0.46 W = 0.92 W. The R

of the package is 95 K/W therefore T

th j-a

amb(max)

= 150 − (95 × 0.92) = 62.6 °C.

1995 Nov 09 5

Philips Semiconductors Objective speciﬁcation

Stereo BTL audio output ampliﬁer with DC

TDA7053A

volume control

CHARACTERISTICS

VP=6V; T (see Fig.13).

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

q(tot)

Maximum gain; V

out

THD total harmonic distortion

I(rms)

B bandwidth at −1dB − note 3 − Hz SVRR supply voltage ripple rejection note 4 34 38 − dB V

O(os)

 channel unbalance note 5 −−1dB

G

Mute position; V

DC volume control

=25°C; fi= 1 kHz; TDA7053A: RL=8Ω; TDA7053AT: RL=16Ω; unless otherwise speciﬁed

amb

supply voltage 4.5 − 18 V total quiescent current VP=6V; RL=∞; note 1 − 22 25 mA

≥ 1.4 V

2,8

output power THD = 10%

TDA7053A 1.0 1.1 − W TDA7053AT 0.5 0.6 − W

TDA7053A P TDA7053AT P

= 0.5 W − 0.3 1 %

out

= 0.25 W − 0.3 1 %

out

voltage gain 39.5 40.5 41.5 dB input signal handling (RMS value) Gv= 0 dB; THD < 1% 1 −−V noise output voltage fi= 500 kHz; note 2 − 210 −µV

DC output offset voltage V16− V13 and V12− V9− 0 200 mV input impedance (pins 4 and 6) 15 20 25 kΩ channel separation RS=5kΩ 40 −−dB

= 0 dB; note 6 −−1dB

= 0.4 V ±30 mV

2,8

output voltage in mute position Vi= 1.0 V; note 7 −−30 µV

gain control 68.5 73.5 − dB volume control current V2=V8=0V −20 −25 −30 µA

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

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

3. 20 Hz to 300 kHz (typical).

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

5. The channel unbalance is measured with V

6. The channel unbalance at G1= 0 dB is measured with V

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

1995 Nov 09 6

DC1=VDC2

Philips Semiconductors Objective speciﬁcation

Stereo BTL audio output ampliﬁer with DC volume control

handbook, halfpage

q

(mA)

04 20

81216

Fig.3 Quiescent current as a function of supply

voltage.

MBG672

(V)

handbook, halfpage

THD

(%)

−2

(1) VP= 4.5V. (2) VP= 6 V; RL=8Ω. (3) VP= 12 V; RL=25Ω.

Fig.4 THD as a function of output power.

−1

(1) (2) (3)

TDA7053A

MBG671

(W)

out

handbook, halfpage

THD

(%)

(1) Gv= 30 dB; Po= 0.1 W. (2) Gv= 40 dB; Po= 0.1 W.

(2)

(1)

−2

Fig.5 THD as a function of frequency.

MBG669

−1

10110

f (kHz)

2.5

handbook, halfpage

out

(W)

2.0

1.5

1.0

0.5

(1) RL=8Ω. (2) RL=16Ω. (3) RL=25Ω.

(1) (2) (3)

4 8 12 16

MBG670

VP (V)

Fig.6 Output power as a function of supply

voltage.

1995 Nov 09 7

Philips Semiconductors Objective speciﬁcation

Stereo BTL audio output ampliﬁer with DC volume control

MBG668

(V)

handbook, halfpage

diss

(W)

048 16

(1) RL=8Ω. (2) RL=16Ω. (3) RL=25Ω.

(2) (3)(1)

handbook, halfpage

v

(dB)

−40

−80

−120

TDA7053A

0.4 0.8 1.2 1.6

MBG667

VVC (V)

2.0

Fig.7 Total worst case power dissipation as a

function of supply voltage.

no

(mV)

−1

−2

0.4 0.8 1.2 1.6 VVC (V)

handbook, halfpage

MBG664

2.0

Fig.8 Voltage gain as a function of volume control

voltage.

10110

MBG663

f (kHz)

SVRR

(dB)

−20

−40

−60

−80

−2

handbook, halfpage

(1)

(2)

−1

f = 22 Hz to 22 kHz.

Fig.9 Noise voltage as a function of volume

control voltage.

1995 Nov 09 8

(1) VDC= 1.4 V;V (2) VDC= 0.4 V; V

ripple

= 0.2 V.

Fig.10 SVRR as a function of frequency.

Philips Semiconductors Objective speciﬁcation

Stereo BTL audio output ampliﬁer with DC volume control

2.0

handbook, halfpage

in

(V)

1.6

1.2

0.8

0.4

020

4 8 12 16

MBG665

(V)

handbook, halfpage

VC

(µA)

−10

−20

−30

TDA7053A

0.4 0.8 1.2 1.6

MBG666

VVC (V)

2.0

THD = 1 %.

Fig.11 Input signal handling.

APPLICATION INFORMATION

The application diagram is illustrated in Fig.13.

Test conditions

=25°C unless otherwise specified; VP=6V;

amb

VDC= 1.4 V; fi= 1 kHz; RL=8Ω. The quiescent current has been measured without load

impedance. The output power as a function of the supply voltage has

been measured at THD = 10%. The maximum output power is limited by the maximum power dissipation and the maximum available output current.

Fig.12 Volume control current as a function of

volume control voltage.

The maximum input signal voltage is measured at THD = 1% at the output with a voltage gain of 0 dB.

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

The DC volume control can be applied in several ways. Two possible circuits are shown below the main application diagram. The circuits at the control pin will influence the switch-on and switch-off behaviour and the maximum voltage gain.

For single-end applications the output peak current must not exceed 100 mA. At higher output currents the short-circuit protection (MCL) will be active.

1995 Nov 09 9

Philips Semiconductors Objective speciﬁcation

Stereo BTL audio output ampliﬁer with DC volume control

handbook, full pagewidth

TDA7053A

470 nF

input 1

Rs = 5 kΩ

4 2

STABILIZER

TEMPERATURE

PROTECTION

I + 1

I − 1

MCL

TDA7053A

(1)

100 nF

VP = 6 V

220 µF

(2)

input 2

Rs = 5 kΩ

volume

control

470 nF

DC-

volume

1 MΩ1 µF

2, 8

maximum voltage

6 8

gain 34 dB

signal

ground

I − 1

I + 1

10 147

power

ground

volume

control

1 µF

56 kΩ

2, 8

22 kΩ

VCC = 6 V

maximum voltage

gain 40 dB

MBG673

(2)

(1) This capacitor can be omitted if the 220 µF electrolytic capacitor is connected close to pin 5. (2) RL=8Ω.

1995 Nov 09 10

Fig.13 Test and application diagram.

Philips Semiconductors Objective speciﬁcation

Stereo BTL audio output ampliﬁer with DC volume control

PACKAGE OUTLINES

DIP16: plastic dual in-line package; 16 leads (300 mil); long body

seating plane

w M

TDA7053A

SOT38-1

(e )

pin 1 index

0 5 10 mm

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

UNIT

inches

Note

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

max.

4.7 0.51 3.7

OUTLINE VERSION

SOT38-1

min.

1 2

max.

0.15

IEC JEDEC EIAJ

050G09 MO-001AE

1.40

1.14

0.055

0.045

0.53

0.38

0.021

0.015

cEe M

0.32

0.23

0.013

0.009

REFERENCES

21.8

21.4

0.86

0.84

scale

(1) (1)

6.48

6.20

0.26

0.24

(1)

0.30

0.15

0.13

3.9

3.4

8.25

7.80

0.32

0.31

EUROPEAN

PROJECTION

9.5

0.2542.54 7.62

8.3

0.37

0.010.100.0200.19

0.33

ISSUE DATE

92-10-02 95-01-19

max.

2.2

0.087

1995 Nov 09 11

Philips Semiconductors Objective speciﬁcation

Stereo BTL audio output ampliﬁer with DC volume control

SO16: plastic small outline package; 16 leads; body width 7.5 mm

TDA7053A

SOT162-1

pin 1 index

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

max.

2.65

0.10

0.30

0.10

0.012

0.004

A2A

2.45

2.25

0.096

0.089

0.25

0.01

0.49

0.36

0.019

0.013

0.014

0.009

UNIT

inches

Note

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

0.32

0.23

0 5 10 mm

scale

(1)E(1) (1)

10.5

10.1

0.41

0.40

eHELLpQ

7.6

1.27

7.4

0.30

0.050

0.29

10.65

10.00

0.42

0.39

1.4

0.055

1.1

0.4

0.043

0.016

detail X

0.043

0.039

1.1

1.0

0.25 0.1

0.01

ywv θ

0.004

0.9

0.4

0.035

0.016

(A )

0.25

0.01

OUTLINE VERSION

SOT162-1

1995 Nov 09 12

REFERENCES

IEC JEDEC EIAJ

075E03 MS-013AA

EUROPEAN

PROJECTION

ISSUE DATE

92-11-17

95-01-24

Philips Semiconductors Objective speciﬁcation

Stereo BTL audio output 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

OLDERING BY DIPPING OR BY WA VE

S 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.

EPAIRING SOLDERED JOINTS

R 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.

REFLOW SOLDERING Reflow soldering techniques are suitable for all SO

packages.

(order code 9398 652 90011).

). If the

stg max

TDA7053A

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.

EPAIRING SOLDERED JOINTS

R Fix the component by first soldering two diagonally-

opposite 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.

1995 Nov 09 13

Philips Semiconductors Objective speciﬁcation

Stereo BTL audio output ampliﬁer with DC

TDA7053A

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.

1995 Nov 09 14

DATASHEETS tda7053a DATASHEETS (Philips)

Specifications and Main Features

Frequently Asked Questions

User Manual