Datasheet TDA8576T-N1 Datasheet (Philips)

DATA SH EET

Product specification
Supersedes data of 1997 Feb 26
File under Integrated Circuits, IC01

1998 Oct 16

INTEGRATED CIRCUITS

TDA8576T

Class-H high-output voltage level
line driver

1998 Oct 16 2

Philips Semiconductors Product specification

Class-H high-output voltage level line
driver

TDA8576T

FEATURES

• Output voltage swing larger than supply voltage

• High supply voltage ripple rejection

• Low distortion

• Low noise

• ESD protected on all pins.

GENERAL DESCRIPTION

The TDA8576T is a two channel class-H high-output
voltage line driver for use in car audio applications.
The line driver operates as a non-inverting amplifier with a
gain of 6 dB and a single-ended output. Due to the class-H
voltage lifting principle the voltage swing over the load is
more than the supply voltage.

With a supply voltage of 9 V the output voltage swing over
the load will be more than 14 V (peak-to-peak).
The TDA8576T is available in a SO16 package.

Line drivers are necessary in car audio systems in which
the power amplifiers are driven by long cables.
The signal-to-noise ratio of these car audio systems is
improved by using the TDA8576T class-H high-output
level line driver. The high-output level of TDA8576T
enables a reduction of the gain of the power amplifier
resulting in an improvement of the power amplifier
performance.

QUICK REFERENCE DATA

ORDERING INFORMATION

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

CC

supply voltage 6 9 12 V

I

CC

supply current VCC=9V − 14 20 mA

G

v

voltage gain 567dB

V

o(rms)

maximum output voltage (RMS value) THD = 0.1% 5.0 5.3 − V
SVRR supply voltage ripple rejection 40 65 − dB
THD total harmonic distortion V

o(rms)

=3V; f=1kHz − 0.005 − %

V

no

noise output voltage − 5 −µV
Z

o

 output impedance −−10 Ω

TYPE

NUMBER

PACKAGE

NAME DESCRIPTION VERSION

TDA8576T SO16 plastic small outline package; 16 leads; body width 7.5 mm SOT162-1

1998 Oct 16 3

Philips Semiconductors Product specification

Class-H high-output voltage level line
driver

TDA8576T

BLOCK DIAGRAM

Fig.1 Block diagram.

handbook, full pagewidth

MGE671

36 kΩ

20 kΩ

5 Ω

36 kΩ

36 kΩ

20 kΩ

36 kΩ

REFERENCE

REFERENCE

LIFT

AMP.

LIFT

AMP.

SIGNAL

AMP.

SIGNAL

AMP.

TDA8576T

V

CCL

V

CCL

V

CCR

V

CCR

V

CCL

V

CCR

1

BUFFER

BUFFER

BUFFER

BUFFER

CL+

CL−

CR+

CR−

OUTL

13

14

11

12

10

9

INR

INMR

INML

INL

3

SVRL

8

15

16

LGND

RGND

OUTR

2
4

5
7

6

SVRR

+

+

−

+

−

−

+

−

1998 Oct 16 4

Philips Semiconductors Product specification

Class-H high-output voltage level line
driver

TDA8576T

PINNING

SYMBOL PIN DESCRIPTION

V

CCL

1 supply voltage left channel
INL 2 input voltage left channel
SVRL 3 SVRR left channel
INML 4 inverting input left channel
INMR 5 inverting input right channel
SVRR 6 SVRR right channel
INR 7 input voltage right channel
V

CCR

8 supply voltage right channel
CR+ 9 lift capacitor (+) right channel
CR− 10 lift capacitor (−) right channel
RGND 11 ground right channel
OUTR 12 output voltage right channel
OUTL 13 output voltage left channel
LGND 14 ground left channel
CL− 15 lift capacitor (−) left channel
CL+ 16 lift capacitor (+) left channel

Fig.2 Pin configuration.

handbook, halfpage

TDA8576T

MGE670

1
2
3
4
5
6
7
8

16
15
14
13
12
11
10

9

V

CCL

INL

SVRL

INML

INMR

SVRR

INR

V

CCR

CR+

CR−

RGND

OUTR

OUTL

LGND

CL−

CL+

FUNCTIONAL DESCRIPTION
Lift amplifier

The lift amplifier, referred to as LIFT AMP. in Fig.1, is used
as a non-inverting amplifier with a voltage gain of 6 dB set
by an internal feedback network. If the output voltage of
the signal amplifier is low, the external lift capacitor is
recharged by the lift amplifier. As soon as the output
voltage of the signal amplifier increases above 0.87 × V

CC

the lift amplifier switches the voltage of the lift capacitor in
series with the supply voltage V

CC.

The voltage at the
positive side of the lift capacitor is referred to as lifted
supply voltage.

Signal amplifier

The signal amplifier, referred to as SIGNAL AMP. in Fig.1,
is used as a non-inverting amplifier. The voltage gain G

v

is

set by the feedback resistors according to the formula:

and should be set to 6 dB. The LIFT AMP. and SIGNAL
AMP. must have equal voltage gain Gv.

G

v

1

R

2

R

1

------ -

+=

The rail-to-rail output stage of the signal amplifier uses the
lifted supply voltage to increase the output voltage swing.
The DC output level is set to ≈0.87 × V

CC

. The maximum
peak-to-peak output voltage of the signal amplifier is
calculated with the formula:

Buffers

The buffers prevent loading of the internal voltage divider
network made by a series connection of resistors. For a
good supply voltage ripple rejection this internal voltage
divider network has to be decoupled by an external
capacitor.

Reference

This circuit supplies all currents needed in the device.

V

op p–()max()

2 0.87V

CC

0.4–()×≈

1998 Oct 16 5

Philips Semiconductors Product specification

Class-H high-output voltage level line
driver

TDA8576T

LIMITING VALUES

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

THERMAL CHARACTERISTICS

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

V

CC

supply voltage operating − 12 V

I

ORM

repetitive peak output current − 20 mA

T

amb

ambient temperature −40 +85 °C

T

stg

storage temperature −55 +150 °C

T

j

junction temperature − +150 °C

SYMBOL PARAMETER VALUE UNIT

R

th j-a

thermal resistance from junction to ambient in free air 110 K/W

1998 Oct 16 6

Philips Semiconductors Product specification

Class-H high-output voltage level line
driver

TDA8576T

DC CHARACTERISTICS

VCC=9V; RL=10kΩ; T

amb

=25°C; in accordance with application diagram (see Fig.3).

Note

1. The DC output voltage with respect to ground is ≈0.87 ×VCC.

AC CHARACTERISTICS

V

CC

=9V; RL=10kΩ; f = 1 kHz; T

amb

=25°C; in accordance with application diagram (see Fig.3); note 1.

Notes

1. The channel separation is determined by the parasitic capacitance between the inverting input left channel (pin 4)
and the inverting input right channel (pin 5). The PCB layout has a major contribution to the parasitic capacitance.
To obtain best results the PCB tracks to pin 4 and pin 5 should be separated as much as possible.

2. The frequency response is externally fixed by the input coupling capacitors.

3. Noise output voltage is measured in a bandwidth of 20 Hz to 20 kHz with a source resistor R

s

= 600 Ω.

4. Noise output voltage is measured in a bandwidth of 20 Hz to 20 kHz with an A-weighted filter with a source resistor
Rs= 600 Ω.

5. Distortion is measured at a frequency of 1 kHz using an A-weighted filter.

6. Distortion is measured at an output voltage of 3.0 V (RMS) at frequencies between 17 Hz and 20 kHz.

7. Ripple rejection is measured at the output, using a source resistor Rs= 600 Ω and a ripple amplitude of
100 mV (RMS) at a frequency of 1 kHz.

8. Ripple rejection is measured at the output, using a source resistor Rs= 600 Ω and a ripple amplitude of
100 mV (RMS) at frequencies between 20 Hz and 20 kHz.

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

CC

supply voltage Vi=0V 6912V

I

CC

supply current − 14 20 mA

V

O

DC output voltage note 1 − 7.8 − V

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

G

v

voltage gain 567dB

∆G

v

 channel unbalance −−0.5 dB

α

cs

channel separation Rs= 600 Ω; V

o(rms)

= 1 V; note 1 80 90 − dB

f

Ir

low frequency roll-off −1 dB; note 2 −−5Hz

f

hr

high frequency roll-off −1dB 20 −−kHz

Z

i

 input impedance 14 20 28 kΩ

Z

o

 output impedance −−10 Ω

V

o(max)(rms)

maximum output voltage
(RMS value)

THD+N=0.1% 5.0 5.3 − V

V

no

noise input voltage unweighted; note 3 − 79µV

A-weighted; note 4 − 5 −µV

THD + N total harmonic distortion plus

noise

f = 1 kHz; V

O

=3V

rms

; note 5 − 0.005 0.01 %

f = 17 Hz to 20 kHz; note 6 − 0.01 − %

SVRR supply voltage ripple

rejection

note 7 40 65 − dB
f = 20 Hz to 20 kHz; note 8 − 55 − dB

1998 Oct 16 7

Philips Semiconductors Product specification

Class-H high-output voltage level line
driver

TDA8576T

APPLICATION INFORMATION

Fig.3 Application diagram.

handbook, full pagewidth

MGE672

36 kΩ

36 kΩ 36 kΩ

20 kΩ

10 kΩ

5 Ω

36 kΩ

36 kΩ

20 kΩ

36 kΩ

REFERENCE

REFERENCE

LIFT

AMP.

LIFT

AMP.

SIGNAL

AMP.

SIGNAL

AMP.

TDA8576T

V

CCL

V

CC

C6

V

CCL

V

CCR

RL

R1

(1)

R2

(1)

R1

(1)

R2

(1)

V

CCR

V

CCL

V

CC

C5

1.5 nF

22 µF

C4

C3

V

CCR

1

BUFFER

BUFFER

BUFFER

BUFFER

CL+

CL−

CR+

CR−

OUTL

13

14

11

12

10

9

INR

INMR

INML

INL

3

SVRL

100

nF

8

15

16

LGND

RGND

OUTR

1.5 nF

2
4

5
7

V

i(R)

C2

C1

V

i(L)

6

SVRR

+

+

−

+

−

−

+

−

36 kΩ 36 kΩ

47 µF

22 µF

C1

R

s

R

s

22 µF

22 µF

100

µF

100
µF

C5

1.5
nF

C5

1.5
nF

10 kΩ

RL

C3

C5

C4

V

CC

(1) R1and R2 should have a tolerance of ≤ 1%.

1998 Oct 16 8

Philips Semiconductors Product specification

Class-H high-output voltage level line
driver

TDA8576T

Printed Circuit Board (PCB) layout

Fig.4 Recommended PCB-layout.

handbook, full pagewidth

MBH884

64

46.08

47 µF

22 µF

22 µF

10 kΩ

OUTR

INR

SGND

OUTL

INL

V

CC

GND

RL

SGND

10 kΩ

36 kΩ

36 kΩ

22 µF 22 µF

36 kΩ

36 kΩ

SO16

Dimensions in mm.
IC mounted on track side, additional components mounted on component side.
Tracks viewed from component side.

1998 Oct 16 9

Philips Semiconductors Product specification

Class-H high-output voltage level line
driver

TDA8576T

Application characteristics

VCC= 9 V; RI=10kΩ; T

amb

=25°C; 80 kHz filter.

Fig.5 Total harmonic distortion plus noise as a

function of Vo.

handbook, halfpage

60

Vo (V)

THD + N

(%)

24

1

10

−1

10

−2

10

−3

MGD912

1 kHz

f = 10 kHz

100 Hz

Fig.6 Total harmonic distortion plus noise as a

function of frequency.

handbook, halfpage

1

10

−1

10

−2

10

−3

MGD913

0

THD + N

(%)

f (Hz)

10

2

10

3

10

4

10

5

4 V
3 V
2 V

Vo = 5 V

Fig.7 Total circuit gain as a function of frequency.

handbook, halfpage

0

2

4

6

8

MGD914

f (Hz)

G

(dB)

10

2

10

10

3

10

4

10

5

10

6

Fig.8 Supply voltage ripple rejection as a function

of frequency.

handbook, halfpage

−80

−70

−60

−50

−40

MGD915

10

SVRR

(dB)

f (Hz)

10

2

10

3

10

4

10

5

Rs = 600 Ω

0 Ω

1998 Oct 16 10

Philips Semiconductors Product specification

Class-H high-output voltage level line
driver

TDA8576T

Fig.9 Channel separation as a function of Vo.

handbook, halfpage

0

Vo (V)

α

cs

(dB)

−60

−80

−100

−120

15

234

MGD916

f = 10 kHz

1 kHz

100 Hz

Fig.10 Channel separation as a function of

frequency.

handbook, halfpage

−120

−100

−80

−60

MGD917

10

1 V

3 V

5 V

f (Hz)

α

cs

(dB)

10

2

10

3

10

4

10

5

1998 Oct 16 11

Philips Semiconductors Product specification

Class-H high-output voltage level line
driver

TDA8576T

PACKAGE OUTLINE

UNIT

A

max.

A

1

A2A

3

b

p

cD

(1)E(1) (1)

eHELLpQ

Z

ywv θ

REFERENCES

OUTLINE

VERSION

EUROPEAN

PROJECTION

ISSUE DATE

IEC JEDEC EIAJ

mm

inches

2.65

0.30

0.10

2.45

2.25

0.49

0.36

0.32

0.23

10.5

10.1

7.6

7.4

1.27

10.65

10.00

1.1

1.0

0.9

0.4

8
0

o
o

0.25 0.1

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

Note

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

1.1

0.4

SOT162-1

8

16

w M

b

p

D

detail X

Z

e

9

1

y

0.25

075E03 MS-013AA

pin 1 index

0.10

0.012

0.004

0.096

0.089

0.019

0.014

0.013

0.009

0.41

0.40

0.30

0.29

0.050

1.4

0.055

0.419

0.394

0.043

0.039

0.035

0.016

0.01

0.25

0.01

0.004

0.043

0.016

0.01

X

θ

A

A

1

A

2

H

E

L

p

Q

E

c

L

v M

A

(A )

3

A

0 5 10 mm

scale

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

SOT162-1

95-01-24
97-05-22

1998 Oct 16 12

Philips Semiconductors Product specification

Class-H high-output voltage level line
driver

TDA8576T

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

“Data Handbook IC26; Integrated Circuit Packages”

(order code 9398 652 90011).

Reflow soldering

Reflow soldering techniques are suitable for all SO
packages.

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.

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.

Wave soldering

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.

Repairing 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.

1998 Oct 16 13

Philips Semiconductors Product specification

Class-H high-output voltage level line
driver

TDA8576T

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.

1998 Oct 16 14

Philips Semiconductors Product specification

Class-H high-output voltage level line
driver

TDA8576T

NOTES

1998 Oct 16 15

Philips Semiconductors Product specification

Class-H high-output voltage level line
driver

TDA8576T

NOTES

Internet: http://www.semiconductors.philips.com

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© Philips Electronics N.V. 1998 SCA60
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.

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Printed in The Netherlands 545102/25/03/pp16 Date of release: 1998 Oct 16 Document order number: 9397 750 04394