Philips TDA8943SF User Manual

TDA8943SF

7 W mono Bridge Tied Load (BTL) audio amplifier

14 April 1999 Preliminary specification

1. General description

The TDA8943SF is a single-channel audio power amplifier with an output power of
7 W at an 8 Ω load and a 12 V supply. The circuit contains a Bridge Tied Load (BTL)
amplifier with an all-NPN output stage and standby/mute logic. The TDA8943SF
comes in a 9-lead single in-line (SIL) medium power package. The TDA8943SF is
printed-circuit board (PCB) compatible with all other types in the TDA894x family.
One PCB footprint accommodates both the mono and the stereo products.

2. Features

■ Few external components

■ Fixed gain

■ Standby and mute mode

■ No on/off switching plops

■ Low standby current

■ High supply voltage ripple rejection

■ Outputs short-circuit protected to ground, supply and across the load

■ Thermally protected

■ Printed-circuit board compatible, see Table 3 “Product family overview”.

3. Applications

■ Mains fed applications (e.g. TV sound)

■ PC audio

■ Portable audio.

4. Quick reference data

Table 1: Quick reference data

Symbol Parameter Conditions Min Typ Max Unit

V

CC

I

q

I

stb

supply voltage 6 12 18 V
quiescent supply current VCC=12V; RL=∞ - 1522mA
standby supply current - - 10 µA

Philips Semiconductors

TDA8943SF

7 W mono BTL audio amplifier

Table 1: Quick reference data

Symbol Parameter Conditions Min Typ Max Unit

P

o

THD total harmonic distortion P
G

v

SVRR supply voltage ripple

5. Ordering information

Table 2: Ordering information

Type number Package

TDA8943SF SIL9MPF plastic single in-line medium power package

5.1 Ordering options

Table 3: Product family overview

Type number Package Description

TDA8941P DIP8 1.5 W mono Bridge Tied Load (BTL) audio amplifier
TDA8942P DIP16 2 x 1.5 W stereo Bridge Tied Load (BTL) audio amplifier
TDA8943SF SIL9MPF 7 W mono Bridge Tied Load (BTL) audio amplifier
TDA8944J DBS17P 2 x 7 W stereo Bridge Tied Load (BTL) audio amplifier
TDA8945S SIL9P 15 W mono Bridge Tied Load (BTL) audio amplifier
TDA8946J DBS17P 2 x 15 W stereo Bridge Tied Load (BTL) audio amplifier

…continued

output power THD = 10%; RL=8Ω;

=12V

V

CC

= 1 W - 0.03 0.1 %

o

voltage gain 31 32 33 dB

rejection

Name Description Version

with fin; 9 leads

67- W

50--dB

SOT110-1

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6. Block diagram

TDA8943SF

7 W mono BTL audio amplifier

dth

Fig 1. Block diagram.

7. Pinning information

7.1 Pinning

IN−
IN+

MODE

SVR

TDA8943SF

5
4

7

STANDBY/

MUTE LOGIC

6

kΩ

kΩ

20

20

V

CC

V

CC

GND

2

SHORT CIRCUIT

TEMPERATURE

PROTECTION

8

AND

MBK942

1

OUT−

3

OUT+

handbook, halfpage

Fig 2. Pin configuration.

OUT−

V

CC

OUT+

IN+
IN−

SVR

MODE

GND

n.c.

1
2
3
4
5

TDA8943SF

6
7
8
9

MBK941

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7.2 Pin description

Table 4: Pin description

Symbol Pin Description

OUT− 1 negative loudspeaker terminal
V

CC

OUT+ 3 positive loudspeaker terminal
IN+ 4 positive input
IN− 5 negative input
SVR 6 half supply voltage decoupling (ripple rejection)
MODE 7 mode selection input (standby, mute, operating)
GND 8 ground
n.c. 9 not connected

8. Functional description

The TDA8943SF is a mono BTL audio power amplifier capable of delivering 7 W
output power to an 8 Ω load at THD = 10%, using a 12 V power supply and an
external heatsink. The voltage gain is fixed at 32 dB.

TDA8943SF

7 W mono BTL audio amplifier

2 supply voltage

With the three-level MODE input the device can be switched from ‘standby’ to ‘mute’
and to ‘operating’ mode.

The TDA8943SF outputs are protected by an internal thermal shutdown protection
mechanism and a short-circuit protection.

8.1 Power amplifier

The power amplifier is a Bridge Tied Load (BTL) amplifier with an all-NPN output
stage, capable of delivering a peak output current of 1.5 A.

The BTL principle offers the following advantages:

Lower peak value of the supply current

•

The ripple frequency on the supply voltage is twice the signal frequency

•

No expensive DC-blocking capacitor

•

Good low frequency performance.

•

8.2 Mode selection

The TDA8943SF has three functional modes, which can be selected by applying the
proper DC voltage to pin MODE.

Standby — In this mode the current consumption is very low and the outputs are
floating. The device is in standby mode when V
MODE pin is left floating.

>(VCC− 0.5 V), or when the

MODE

Mute — In this mode the amplifier is DC-biased but not operational (no audio output).
This allows the input coupling capacitors to be charged to avoid pop-noise. The
device is in mute mode when 2.5V<V

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Preliminary specification 14 April 1999 4 of 12

<(VCC− 1.5 V).

MODE

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Philips Semiconductors

Operating — In this mode the amplifier is operating normally. The operating mode is

activated at V

9. Limiting values

Table 5: Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134).

Symbol Parameter Conditions Min Max Unit

V

CC

V

I

I

ORM

T

stg

T

amb

P

tot

V

CC(sc)

TDA8943SF

7 W mono BTL audio amplifier

< 0.5 V.

MODE

supply voltage operating −0.3 +18 V

[1]

no signal
input voltage −0.3 VCC+ 0.3 V
repetitive peak output current - 2 A
storage temperature non-operating −55 +150 °C
operating ambient

temperature
total power dissipation - <tbf> W
supply voltage to guarantee

short-circuit protection

−0.3 +25 V

−40 +85 °C

- <tbf> V

[1] Applies to all functional modes.

10. Thermal characteristics

Table 6: Thermal characteristics

Symbol Parameter Conditions Value Unit

R
R

th(j-a)
th(j-c)

thermal resistance from junction to ambient in free air 65 K/W
thermal resistance from junction to case in free air 10 K/W

11. Static characteristics

Table 7: Static characteristics

VCC=12V; T

Symbol Parameter Conditions Min Typ Max Unit

V

CC

I

q

I

stb

V

O

[3]

∆V

OUT

V

MODE

I

MODE

=25°C; RL=8Ω; V

amb

=0V; Vi= 0 V; measured in test circuit Figure 3; unless otherwise specified.

MODE

supply voltage operating 6 12 18 V
quiescent supply current RL= ∞
standby supply current V

MODE=VCC

DC output voltage

[1]

- 1522mA

--10µA

[2]

-6-V
differential output voltage offset - - 200 mV
mode selection input voltage operating mode 0 - 0.5 V

mute mode 2.5 - V
standby mode V

mode selection input current 0 < V

MODE<VCC

− 0.5 - V

CC

--20µA

CC
CC

− 1.5 V
V

[1] With a load connected at the outputs the quiescent current will increase, the maximum of this increase being equal to the differential

output voltage offset (∆V
[2] The DC output voltage with respect to ground is approximately 0.5VCC.
[3] ∆V

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Preliminary specification 14 April 1999 5 of 12

OUT

= | V

OUT+

− V

) divided by the load resistance (RL).

OUT

|.

OUT−

© Philips Electronics N.V. 1999. All rights reserved.

Philips Semiconductors

TDA8943SF

7 W mono BTL audio amplifier

12. Dynamic characteristics

Table 8: Dynamic characteristics

VCC=12V; T

Symbol Parameter Conditions Min Typ Max Unit

P

o

THD total harmonic distortion P
G

v

Z

i(dif)

V

n(o)

SVRR supply voltage ripple rejection f

V

o(mute)

[1] The noise output voltage is measured at the output in a frequency range from 20 Hz to 20 kHz (unweighted), with a source impedance

R

source

[2] Supply voltage ripple rejection is measured at the output, with a source impedanceR

wave with a frequency f
[3] Output voltage in mute mode is measured with an input voltage of 1 V (RMS) in a bandwidth of 20 kHz, so including noise.

=25°C; RL=8Ω; f = 1 kHz; V

amb

output power THD = 10% 6 7 - W

voltage gain 31 32 33 dB
differential input impedance 70 90 110 kΩ
noise output voltage

output voltage mute mode

=0Ω at the input.

and an amplitude of 100 mV (RMS), which is applied to the positive supply rail.

ripple

= 0 V; measured in test circuit Figure 3; unless otherwise specified.

MODE

THD = 0.5% 4 5 - W

= 1 W - 0.03 0.1 %

o

[1]

- 90 120 µV

= 1 kHz

ripple

= 100 Hz

f

ripple

[2]

50--dB

[2]

- <tbf> - dB

to 20 kHz

[3]

--50µV

=0Ωattheinput.Theripple voltageisasine

source

13. Application information

handbook, full pagewidth

R

MICROCONTROLLER

Fig 3. Application diagram.

source

V

i

220 nF

220 nF

MODE

10 µF

IN−

IN+

SVR

TDA8943SF

5

4

7

STANDBY/

MUTE LOGIC

6

kΩ

kΩ

V
2

V

CC

20

20

8
GND

CC

SHORT CIRCUIT

AND

TEMPERATURE

PROTECTION

MBK943

100 nF

OUT−

1

OUT+

3

1000 µF

R

L

8 Ω

V

CC

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14. Test information

14.1 Quality information

The
applicable and reference can be found in the

Quality standards for customers

9397 750 00192.

TDA8943SF

7 W mono BTL audio amplifier

General Quality Specification for Integrated Circuits, SNW-FQ-611-part E

Quality Reference Handbook, chapter

. The handbook can be ordered using the code

is

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15. Package outline

TDA8943SF

7 W mono BTL audio amplifier

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

D

D

1

q

P

pin 1 index

P

1

q

2

q

1

SOT110-1

A

2

A

3

A

A

4

E

seating plane

19

Z

b

DIMENSIONS (mm are the original dimensions)

A

A

18.5

17.8

max.

3.7

2

A

A

3

4

8.7

15.8

8.0

15.4

IEC JEDEC EIAJ

UNIT

mm

Note

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

OUTLINE
VERSION

SOT110-1

e

2

b

0.67

0.50

b

1

2

1.40

0.48

1.14

0.38

REFERENCES

bcD

1.40

1.14

b

b

1

0 5 10 mm

scale

(1)

D

1

21.8

21.4

21.4

20.7

w M

(1)

E

eLPP

6.48

6.20

2.54

3.9

3.4

L

q

Q

1

3.4

3.2

1.75

15.1

1.55

14.9

EUROPEAN

PROJECTION

2.75

2.50

c

Q

q1q

2

5.9

4.4

5.7

4.2

ISSUE DATE

w

0.25

92-11-17
95-02-25

(1)

Z

max.

1.0

Fig 4. SIL9MPF package outline.

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16. Soldering

16.1 Introduction to soldering through-hole mount packages

This text gives a brief insight to wave, dip and manual soldering. A more in-depth
account of soldering ICs can be found in our

Packages

Wave soldering is the preferred method for mounting of through-hole mount IC
packages on a printed-circuit board.

16.2 Soldering by dipping or by solder wave

The maximum permissible temperature of the solder is 260 °C; solder at this
temperature must not be in contact with the joints 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
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.

Data Handbook IC26; Integrated Circuit

(document order number 9398 652 90011).

TDA8943SF

7 W mono BTL audio amplifier

).

stg(max)

16.3 Manual soldering

Apply the soldering iron (24 V or less) to the lead(s) of the package, either below the
seating plane or not more than 2 mm aboveit. 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.

16.4 Package related soldering information

Table 9: Suitability of through-hole mount IC packages for dipping and wave soldering

methods

Package Soldering method

DBS, DIP, HDIP, SDIP, SIL suitable suitable

[1] For SDIP packages, the longitudinal axis must be parallel to the transport direction of the

printed-circuit board.

17. Revision history

Rev Date CPCN Description

01 990414 - Preliminary specification; initial version.

Dipping Wave

[1]

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18. Data sheet status

TDA8943SF

7 W mono BTL audio amplifier

Datasheet status Product status Definition

Objective specification Development This data sheet contains the design target or goal specifications for product development. Specification may

change in any manner without notice.

Preliminary specification Qualification This data sheet contains preliminary data, and supplementary data will be published at a later date. Philips

Semiconductors reserves the right to make changes at any time without notice in order to improve design and
supply the best possible product.

Product specification Production This data sheet contains final specifications. Philips Semiconductors reserves the right to make changes at any

time without notice in order to improve design and supply the best possible product.

[1] Please consult the most recently issued data sheet before initiating or completing a design.

19. Definitions

Short-form specification — The data in a short-form specification is

extracted from a full data sheet with the same type number and title. For
detailed information see the relevant data sheet or data handbook.

Limiting values definition — Limiting values given are in accordance with
the Absolute Maximum Rating System (IEC 60134). 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 — Applications that are described herein for any
of these products are for illustrative purposes only. Philips Semiconductors
make no representation or warranty that such applications will be suitable for
the specified use without further testing or modification.

[1]

20. Disclaimers

Life support — 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 Semiconductors
customers using or selling these products for use in such applications do so
at their own risk and agree to fully indemnify Philips Semiconductors for any
damages resulting from such application.

Right to make changes — Philips Semiconductors reserves the right to
make changes, without notice, in the products, including circuits, standard
cells, and/or software, described or contained herein in order to improve
design and/or performance. Philips Semiconductors assumes no
responsibility or liability for the use of any of these products, conveys no
licence or title under any patent, copyright, or mask work right to these
products, and makes no representations or warranties that these products
are free from patent, copyright, or mask work right infringement, unless
otherwise specified.

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TDA8943SF

7 W mono BTL audio amplifier

Philips Semiconductors - a worldwide company

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Marketing & Sales Communications,
Building BE, P.O. Box 218, 5600 MD EINDHOVEN,
The Netherlands, Fax. [phone]

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Contents

1 General description. . . . . . . . . . . . . . . . . . 1

2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

3 Applications. . . . . . . . . . . . . . . . . . . . . . . . 1

4 Quick reference data. . . . . . . . . . . . . . . . . 1

5 Ordering information . . . . . . . . . . . . . . . . 2

5.1 Ordering options. . . . . . . . . . . . . . . . . . . . 2

6 Block diagram . . . . . . . . . . . . . . . . . . . . . . 3

7 Pinning information . . . . . . . . . . . . . . . . . 3

7.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

7.2 Pin description . . . . . . . . . . . . . . . . . . . . . 4

8 Functional description . . . . . . . . . . . . . . . 4

8.1 Power amplifier. . . . . . . . . . . . . . . . . . . . . 4

8.2 Mode selection. . . . . . . . . . . . . . . . . . . . . 4

9 Limiting values . . . . . . . . . . . . . . . . . . . . . 5

10 Thermal characteristics . . . . . . . . . . . . . . 5

11 Static characteristics . . . . . . . . . . . . . . . . 5

12 Dynamic characteristics. . . . . . . . . . . . . . 6

13 Application information . . . . . . . . . . . . . . 6

14 Test information . . . . . . . . . . . . . . . . . . . . 7

14.1 Quality information . . . . . . . . . . . . . . . . . . 7

15 Package outline. . . . . . . . . . . . . . . . . . . . . 8

16 Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . 9

16.1 Introduction to soldering through-hole mount

packages. . . . . . . . . . . . . . . . . . . . . . . . . 9

16.2 Soldering by dipping or by solder wave . . 9

16.3 Manual soldering . . . . . . . . . . . . . . . . . . . 9

16.4 Package related soldering information. . . 9

17 Revision history . . . . . . . . . . . . . . . . . . . . 9

18 Data sheet status. . . . . . . . . . . . . . . . . . . 10

19 Definitions . . . . . . . . . . . . . . . . . . . . . . . . 10

20 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . 10

TDA8943SF

7 W mono BTL audio amplifier

© Philips Electronics N.V. 1999. Printed in The Netherlands

All rights are reserved. Reproduction in whole or in part is prohibited without the prior
written consent of the copyright owner.

The information presented in this document does not form part of any quotation or
contract, is believed to be accurate and reliable and may be changed without notice. No
liability will be accepted by the publisher for any consequence of its use. Publication
thereof does not convey nor imply any license under patent- or other industrial or
intellectual property rights.

Date of release: 14 April 1999 Document order number: 9397 750 04877