Datasheet TDA1551Q Datasheet (Philips)

INTEGRATED CIRCUITS

DATA SH EET

TDA1551Q

2 x 22 W BTL car radio power
amplifier with diagnostic facility

Preliminary specification
File under Integrated Circuits, IC01

July 1994

Philips Semiconductors Preliminary specification

2 x 22 W BTL car radio power amplifier
with diagnostic facility

FEATURES

• Requires very few external components

• Flexible in use - quad, single ended or stereo BTL

• I2C-bus control

• Dynamic distortion detector

• Thermal protection

• Output status information

• Power supply dip detection

• High output power

• MUTE/sleep mode by writing to I2C-bus

• Stand-by mode

• Fixed gain

• Good ripple rejection

• Load dump protection

• AC/DC short circuit safe to ground and V

• Reverse polarity safe

• Low offset voltage at output

• Capable of handling high energy at outputs (VP= 0 V)

P

TDA1551Q

• Electrostatic discharge protection

• No switch-ON/switch-OFF plop

• Flexible leads

• Low thermal resistance

• Identical inputs (inverting and non-inverting).

DESCRIPTION

The TDA1551Q is an integrated class-B output amplifier
encased in a 17-lead single-in-line plastic power package.
The device contains 4 ×11 W single-ended (SE) or 2 × 22
W BTL amplifiers and is intended for use in car radio
applications.

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

P

V

P

I

P

supply voltage range operating 6 14.4 18 V
supply voltage non-operating −−30 V
total quiescent current − 80 160 mA

Quad-single-ended application

P

o

V

no

output power RL= 4 Ω; THD = 10 % − 6 − W

R

= 2 Ω; THD = 10 % − 11 − W

L

output voltage noise RS= 0 Ω−50 −µV

Stereo BTL application

P

o

V

no

∆V

o

output power RL= 4 Ω; THD = 10 % − 22 − W
output voltage noise RS= 0 Ω−70 −µV
DC output offset voltage −−100 mV

ORDERING INFORMATION

EXTENDED TYPE

NUMBER

PINS PIN POSITION MATERIAL CODE

PACKAGE

TDA1551Q 17 SIL bent to DIL plastic SOT243R

(1)

Note

1. SOT243-1; 1996 September 06.

July 1994 2

Philips Semiconductors Preliminary specification

2 x 22 W BTL car radio power amplifier
with diagnostic facility

TDA1551Q

Fig.1 Block diagram.

July 1994 3

Philips Semiconductors Preliminary specification

2 x 22 W BTL car radio power amplifier
with diagnostic facility

PINNING

SYMBOL PIN DESCRIPTION

−INV1 1 non-inverting input 1
INV1 2 inverting input 1
GND 3 signal ground
V

PRR

V

p1

OUT1 6 output 1
GND1 7 power ground 1
OUT2 8 output 2
SB 9 standby
OUT3 10 output 3
GND2 11 power ground 2
OUT4 12 output 4
V

p2

INV2 14 inverting input 2

−INV2 15 non-inverting input 2
SCL 16 serial clock line
SDA 17 serial data line

4 supply voltage ripple rejection
5 positive supply voltage 1

13 positive supply voltage 2

handbook, halfpage

INV1

INV1
SGND
V

PRR

V

P

OUT1

PGDN1

OUT2
STBY
OUT3

PGND2

OUT4

INV2
NINV2

1

2VP

1
2
3
4
5
6
7
8

TDA1551Q

9
10
11
12

13
14
15

TDA1551Q

SCL

16

SDA

17

MLA007

Fig.2 Pin configuration

July 1994 4

Philips Semiconductors Preliminary specification

2 x 22 W BTL car radio power amplifier

TDA1551Q

with diagnostic facility

FUNCTIONAL DESCRIPTION

The TDA1551Q contains four identical amplifiers with differential input stages (two inverting and two non-inverting) which
can be used in SE or BTL applications. The gain of each amplifier is fixed at 20 dB for SE and 26 dB for BTL. The device
also contains an I2C-bus facility which operates in the read or write mode.

In the write mode the device can be switched to either the sleep condition (low sleep current of 0.6 mA typ.), the MUTE
condition or the ON condition.

In the read mode an 8-bit status word is available. Data bits D0 to D3 contain status information of each of the 4 outputs.
If the device is switched to the ON or MUTE condition and there is a short-circuit at one or more outputs, the power
transistors will be outside their safe operating area consequently one or more bits of D0 to D3 will be HIGH. Bits D0 to
D3 are LOW when in the normal safe operating area. Bit D4 is normally LOW if one or more channels reaches the clipping
level D4 will go HIGH. Bit D5 is normally LOW, if the crystal temperature reaches 150 °C D5 will go HIGH. After a
power-on reset bit 7 will go HIGH and a dip in the power supply will be noticed. Bit 7 will go LOW after the I
read. When pin 9 is LOW the device will switch OFF and the supply current will be reduced to 0.1 mA (max.).

virtual junction

handbook, halfpage

6 8 10 12

2

C-bus is

4 K/W

0.8 K/W

0.1 K/W

MLA009

Fig.3 Thermal equivalent resistance network.

July 1994 5

Philips Semiconductors Preliminary specification

2 x 22 W BTL car radio power amplifier

TDA1551Q

with diagnostic facility

LIMITING VALUES

In accordance with the Absolute Maximum System (IEC134)

SYMBOL PARAMETER MIN. MAX. UNIT

Supply voltage

V

P

V

P

IOSM non-repetitive peak output current − 6A
IORM repetitive peak output current − 4A
T

stg

T

c

V

Psc

V

Pr

P

tot

operating voltage − 18 V
non-operating voltage − 30 V
load dump protect − 45 V

storage temperature range −55 150 °C
crystal temperature − 150 °C
AC/DC short-circuit safe voltage − 18 V
energy handling capability at outputs (V

= 0) − 200 mJ

P

reverse polarity − 6V
total power dissipation − 60 W

QUALITY SPECIFICATION

Electrostatic handling.

SYMBOL PINS MIN. MAX. UNIT

Human body model; R

V

es

1, 2, 14, 15, 16, and 17 −1.5 +1.5 kV

= 1500 Ω; C = 100 pF

S

other −2 +2kV

Machine model; RS= 0 Ω; C = 200 pF

V

es

1, 2, 14, 15, 16, and 17 −100 +100 V
other −200 +200 V

THERMAL RESISTANCE

SYMBOL PARAMETER THERMAL RESISTANCE

R
R

th j-c
th j-a

from junction to case (Fig.3) 1.5 K/W
from junction to ambient in free air 40 K/W

July 1994 6

Philips Semiconductors Preliminary specification

2 x 22 W BTL car radio power amplifier

TDA1551Q

with diagnostic facility

DC CHARACTERISTICS

V

= 14.4 V; T

P

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supply

V

P

I

P

V

O

| DC output offset voltage −−100 mV

|∆V

o

MUTE/sleep/standby

V

O

I

P

I

P

∆V

 DC output offset voltage −−100 mV

o

= 25°C’ measurements in accordance with Fig.6 unless otherwise stated.

amb

supply voltage note 1 6 14.4 18 V
quiescent current − 80 160 mA
DC output voltage note 2 − 6.9 − V

output signal in MUTE position V

I(max)

= 1 V;

−−2mV

f = 20 Hz to 10 kHz
DC current in sleep condition V9 > 3V − 0.6 1 mA
DC current in standby condition V9 < 2 V −−0.1 mA

July 1994 7

Philips Semiconductors Preliminary specification

2 x 22 W BTL car radio power amplifier

TDA1551Q

with diagnostic facility

AC CHARACTERISTICS

V

= 14.4 V; T

P

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Stereo BTL application (Fig.7)

P

O

P

O

THD total harmonic distortion P
B power bandwidth THD = 0.5%; P

f

LOW

f

HIGH

G

v

V

PRR

Z

 input impedance 25 30 38 kΩ

i

V

no

α channel separation R
∆G

 channel unbalance −−1dB

v

= 25°C; f = 1 kHz; RL= 4 Ω; unless otherwise specified.

amb

output power THD = 0.5% 15 17 - W

20 22 - W

output power VP= 13.2V

THD = 0.5% - 12 - W

THD = 10% - 17 - W

= 1 W - 0.05 - %

O

= −1 dB

O

with respect to 15 W

- 20 ­15000

-Hz

low frequency roll-off at −3 dB; note 3 - 25 - Hz
high frequency roll-off at −1 dB 20 - - kHz
closed loop voltage gain 25 26 27 dB
supply voltage ripple rejection ON; note 4 48 - - dB

MUTE; note 4 48 - - dB
standby; note 4 80 - - dB

noise output voltage ON; RS = 0; note 5 - 70 - µV

ON; R

= 10 kΩ; note 5 - 100 200 µV

S

MUTE; notes 5 and 6 - 60 - µV

= 10 kΩ 40 - - dB

S

dynamic distortion detector

− 3.5 − %

switch level
Quad single-ended application (Fig.6)
P

O

output power THD = 0.5%; note 7 4 5 − W

THD = 10%; note 7 5.5 6 − W

P

O

output power RL= 2 Ω

THD = 0.5%; note 7 7.5 8.5 − W

THD = 10%; note 7 10 11 − W
THD total harmonic distortion P
f

LOW

f

HIGH

G

v

V

PRR

low frequency roll-off at −3 dB; note 3 − 25 − Hz
high frequency roll-off at −1 dB 20 −−kHz
closed loop voltage gain 19 20 21 dB
supply voltage ripple rejection ON; note 4 48 −−dB

= 1 W − 0.05 − %

O

MUTE; note 4 48 −−dB

stand-by; note 4 80 −−dB

 input impedance 50 60 75 kΩ

Z

i

V

no

noise output voltage ON; RS= 0; note 5 − 50 −µV

ON; R

= 10 kΩ; note 5 − 70 100 µV

S

July 1994 8

Philips Semiconductors Preliminary specification

2 x 22 W BTL car radio power amplifier

TDA1551Q

with diagnostic facility

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

MUTE; notes 5 and 6 − 60 −µV
α channel separation R
∆G

 channel unbalance −−1dB

v

dynamic distortion detector
switch level

2

I

C-bus (see I2C-bus protocol)

V

IH

V

IL

I

IH

I

IL

V

OL

input voltage HIGH 3 − 5.5 V
input voltage LOW − 0.3 − 1.5 V
input current HIGH V = 5.5 V −10 − 10 µA
input current LOW V = GND −10 − 10 µA

output voltage LOW IL= 3 mA −−0.4 V
Power-on reset (increasing supply voltage)
V

P

start of reset 0.5 −−V

end of reset −−5V

Standby (pin 9)

V

9

input voltage HIGH 3 − V

input voltage LOW −−2V

= 10 kΩ 40 −−dB

S

− 3.5 − %

P

V

Notes to the characteristics

1. The circuit is DC adjusted at VP= 6 V and AC operating at VP= 8 to 18 V.

2. At 18 V < VP< 30 V the DC output voltage < VP/2.

3. Frequency response externally fixed.

4. Ripple rejection measured at the output with a source impedance of 0 Ω and at frequency of 100 Hz to 10 kHz
(amplitude = 2 V(p-p)).

5. Noise voltage measured in a bandwidth of 20 Hz to 20 kHz.

6. Noise output voltage independent of RS(VI= 0 V).

7. Output power is measured directly at the output pins of the IC.

July 1994 9

Philips Semiconductors Preliminary specification

2 x 22 W BTL car radio power amplifier
with diagnostic facility

I2C-bus protocol

SLAVE ADDRESS DATA

handbook, full pagewidth

S: start condition.
R/W: read/write bit; LOW = write.
ACK: acknowledge, generated by the receiving device.
DATA: see Tables 1 and 3.
P: stop conditions.

S 1 1 0 1 1 0 0 ACKD7D6D5D4 D3D2D1D0ACKPR/W

Fig.4 I2C-bus protocol.

TDA1551Q

MLA006

Table 1 WRITE definition (R/

W = LOW)

MSB DATA LSB Function

D7 D6 D5 D4 D3 D2 D1 D0

00000000SLEEP condition
00000001MUTE condition
00000010not allowed
00000011ON condition

(1)

(2)

Notes

1. For test purposes only; I2C-bus is in the ON condition, amplifier is in the stand-by condition.

2. To get into the ON condition without switch-on plops, the device should be switched from the SLEEP condition to the
MUTE condition and then, after a period of 150 ms, to the ON condition.

Bit D0 switches from SLEEP to the ON condition
Bit D1 switches the MUTE condition

July 1994 10

Philips Semiconductors Preliminary specification

2 x 22 W BTL car radio power amplifier

TDA1551Q

with diagnostic facility

Table 2 READ definition (R/W = HIGH)

(1)(2)

D7

D6 D5

Notes

1. LOW after reading I2C-bus.

2. HIGH after power-on reset.

3. LOW if crystal temperature < 150°C.

4. HIGH if crystal temperature reaches 150°C.

5. LOW if not clipping.

6. HIGH if one or more channels are clipping.

7. output status information.

If the device is sinewave driven bit D4 will be HIGH if the THD in one or more channels exceeds 3.5%.

Table 3 Fault conditions

DATA MSB

D3 D2 D1 D0 FUNCTION

0 0 0 0 all output power transistors in the normal

−−−1 fault condition pin 6

−−1−fault condition pin 8

− 1 −−fault condition pin 10

1 −−−fault condition pin 12

(3)(4)

(5)(6)

D4

D3

safe operating condition

(7)

D2

(7)

D2

(7)

D0

(7)

If more outputs are in a fault condition (e.g. short-circuit) then more bits, D3 to D0, will be HIGH.

July 1994 11

Philips Semiconductors Preliminary specification

2 x 22 W BTL car radio power amplifier
with diagnostic facility

handbook, full pagewidth

11

10

00 00

11

10

2

ONI

C-bus

amplifier standby

(test only)

DINI

ONI2C-bus

amplifier ON

power-on reset

I2C-bus standby
amplifier standby

00

10

01

11

11

00
10

TDA1551Q

01

01

2

ONI

C-bus

01

amplifier ON

MUTE

MLA008

Fig.5 State diagram.

July 1994 12

Philips Semiconductors Preliminary specification

2 x 22 W BTL car radio power amplifier
with diagnostic facility

TDA1551Q

Fig.6 Test circuit quad single-ended.

July 1994 13

Philips Semiconductors Preliminary specification

2 x 22 W BTL car radio power amplifier
with diagnostic facility

TDA1551Q

Fig.7 Test circuit stereo BTL.

July 1994 14

Philips Semiconductors Preliminary specification

2 x 22 W BTL car radio power amplifier
with diagnostic facility

PACKAGE OUTLINE

DBS17P: plastic DIL-bent-SIL power package; 17 leads (lead length 12 mm)

non-concave

D

d

x

E

h

D

h

view B: mounting base side

A

2

TDA1551Q

SOT243-1

117

e

Z

DIMENSIONS (mm are the original dimensions)

UNIT A e

mm

A2bpcD

17.0

4.6

4.2

0.75

0.60

15.5

0.48

0.38

1

e

(1)

deD

24.0

20.0

23.6

19.6

w M

b

p

(1)

E

h

12.2

10 2.54

11.8

0 5 10 mm

B

j

L

3

1.27

scale

1

e

5.08

L

E

2

h

6

Q

LL3m

3.4

12.4

3.1

11.0

2.4

1.6

e

4.3

m

E

A

c

2

2.1

1.8

v M

(1)

v

Qj

0.8

0.4w0.03

Z

x

2.00

1.45

Note

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

OUTLINE

VERSION

SOT243-1

IEC JEDEC EIAJ

REFERENCES

July 1994 15

EUROPEAN

PROJECTION

ISSUE DATE

95-03-11
97-12-16

Philips Semiconductors Preliminary specification

2 x 22 W BTL car radio power amplifier
with diagnostic facility

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”

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.

(order code 9398 652 90011).

TDA1551Q

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.

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.

stg max

). If the

July 1994 16

Philips Semiconductors Preliminary specification

2 x 22 W BTL car radio power amplifier

TDA1551Q

with diagnostic facility

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.

PURCHASE OF PHILIPS I

Purchase of Philips I
components in the I2C system provided the system conforms to the I2C specification defined by
Philips. This specification can be ordered using the code 9398 393 40011.

2

C COMPONENTS

2

C components conveys a license under the Philips’ I2C patent to use the

July 1994 17