Datasheet tda1557 DATASHEETS (Philips)

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Page 1

INTEGRATED CIRCUITS

DATA SH EET

TDA1557Q

2 x 22 W BTL stereo car radio power amplifier with speaker protection

Product speciﬁcation File under Integrated Circuits, IC01

May 1992

Page 2

Philips Semiconductors Product speciﬁcation

2 x 22 W BTL stereo car radio power

TDA1557Q

ampliﬁer with speaker protection

FEATURES

• Requires very few external components

• High output power

• Low offset voltage at output

• Fixed gain

• Good ripple rejection

• Mute/stand-by switch

• Load dump protection

• AC and DC short-circuit-safe to ground and V

• Thermally protected

• Reverse polarity safe

• Capability to handle high energy on outputs (VP = 0)

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

positive supply voltage range

operating 6.0 14.4 18 V non-operating −−30 V

load dump −−45 V IORM repetitive peak output current −−4A I

tot

 input impedance 25 −−kΩ

Z

XTAL

total quiescent current − 80 − mA stand-by current − 0.1 100 µA switch-on current −−60 µA

crystal temperature −−+150 °C

Stereo application

SVRR supply voltage ripple rejection R

 DC output offset voltage −−250 mV

∆V

output power THD = 10%; 4 Ω−22 − W

= 0; f = 100 Hz to 10 kHz 45 −−dB

α channel separation 40 −−dB

 channel unbalance −−1dB

∆G

closed loop voltage gain 45 46 47 dB

• Protected against electrostatic discharge

• No switch-on/switch-off plop

• Flexible leads

• Low thermal resistance.

GENERAL DESCRIPTION

The TDA1557Q is a monolithic integrated class-B output amplifier in a 13-lead single-in-line (SIL) plastic power package. The device contains 2 × 22 W amplifiers in BTL configuration and has been primarily developed for car radio applications.

ORDERING INFORMATION

EXTENDED TYPE

NUMBER

PINS PIN POSITION MATERIAL CODE

PACKAGE

TDA1557Q 13 DIL plastic SOT141R

Note

1. SOT141-6; 1996 August 23.

May 1992 2

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Philips Semiconductors Product speciﬁcation

2 x 22 W BTL stereo car radio power ampliﬁer with speaker protection

handbook, full pagewidth

18.1 kΩ

mute switch

input 1

input

reference

voltage

30 kΩ

183 Ω

stand-by

switch

TDA1557Q

POWER

STAGE

POWER

STAGE

stand-by

reference

voltage

TDA1557Q

output 1A

output 1B

mute/stand-by

input 2

reference

voltage

30 kΩ

input

signal ground

15 kΩ

183 

Ω

183 

Ω

18.1 kΩ

mute switch

mute reference  voltage

mute switch

POWER

STAGE

POWER

STAGE

loudspeaker

protection

power ground

MCD324 - 1

output 2B

output 2A

Fig.1 Block diagram.

May 1992 3

Page 4

Philips Semiconductors Product speciﬁcation

2 x 22 W BTL stereo car radio power ampliﬁer with speaker protection

PINNING

SYMBOL PIN DESCRIPTION

INP1 1 input 1 GND1 2 ground (signal) V

OUT1A 4 output 1A GND 5 power ground 1 OUT1B 6 output 1B OUT2A 7 output 2A GND 8 power ground 2 OUT2B 9 output 2B V

M/SS 11 mute/stand-by switch V

ref

INP2 13 input 2

3 supply voltage 1

10 supply voltage 2

12 input reference voltage

TDA1557Q

FUNCTIONAL DESCRIPTION

The TDA1557Q contains two identical amplifiers with differential input stages, and can be used for bridge applications. The gain of each amplifier is fixed at 46 dB. Special features of this device are:

a. mute/stand-by switch

low stand-by current low mute/stand-by switching current (low cost supply

switch) mute facility

b. loudspeaker protection

when a short circuit to ground is made, which forces a DC voltage of ≥ 1 V across the loudspeaker, a built-in protection circuit becomes active and limits the DC voltage across the loudspeaker to ≤ 1 V

c. the harmonic distortion at low frequencies can be

decreased by connecting two diodes to ground at pin 12.

handbook, halfpage

INP1

GND1

GND

M / SS

ref

INP2

5 6

TDA1557Q

7 8

9 10 11 12 13

MCD322 - 1

OUT1A

OUT1B OUT2A

OUT2B

Fig.2 Pin configuration.

May 1992 4

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Philips Semiconductors Product speciﬁcation

2 x 22 W BTL stereo car radio power

TDA1557Q

ampliﬁer with speaker protection

LIMITING VALUES

In accordance with the Absolute maximum System (IEC 134).

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

PSC

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

tot

stg

positive supply voltage

operating − 18 V non-operating − 30 V load dump protected; during − 45 V

50 ms; rise time ≥ 2.5 ms AC and DC short-circuit safe voltage − 18 V reverse polarity − 6.0 V energy handling capability at outputs V

= 0 − 200 mJ

total power dissipation − 60 W storage temperature range −55 +150 °C junction temperature −+150 °C

THERMAL RESISTANCE

SYMBOL PARAMETER THERMAL RESISTANCE

th vj-a

th vj-c

handbook, halfpage

virtual  junction

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

output 1 output 2

2.8 

K/W

0.1 

K/W

case

2.8  K/W

MLA382

Fig.3 Equivalent thermal resistance network.

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Philips Semiconductors Product speciﬁcation

2 x 22 W BTL stereo car radio power

TDA1557Q

ampliﬁer with speaker protection

DC CHARACTERISTICS

= 14.4 V, T

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Supply

 DC output offset voltage −−250 mV

∆V

Mute/stand-by switch

MUTE CONDITION V

mute

 DC output offset voltage −−250 mV

∆V

STAND-BY CONDITION V

= 25 °C, unless otherwise speciﬁed. See note 1.

amb

positive supply voltage range note 2 6.0 14.4 18 V quiescent current − 80 160 mA DC output voltage note 3 − 6.9 − V

switch-on voltage level 8.5 −−V

mute voltage 3.3 − 6.4 V output signal in mute position VI = 1 V max; f = 1 kHz −−20 mV

stand-by voltage 0 − 2.0 V DC current in stand-by condition

≤ 0.5 V −−100 µA

0.5 < V

≤ 2 V −−500 µA

switch-on current − 30 60 µA positive supply current short-circuit to GND; − 5.5 − mA

note 4

Loudspeaker protection

∆V

 DC voltage across R

4-6, 7-9

−−1.0 V

May 1992 6

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Philips Semiconductors Product speciﬁcation

2 x 22 W BTL stereo car radio power

TDA1557Q

ampliﬁer with speaker protection

AC CHARACTERISTICS

= 14.4 V; RL = 4 Ω; f = 1 kHz; T

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

output power

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

low

high

low frequency roll-off −1 dB; note 5 − 25 − Hz high frequency roll-off −1 dB 20 −−kHz closed loop voltage gain 45 46 47 dB

SVRR supply voltage ripple rejection

 input impedance 25 30 36 kΩ

Z

noise output voltage

α channel separation 40 −−dB

 channel unbalance −− 1dB

∆G

= 25 °C; unless otherwise speciﬁed. See note 1.

amb

THD = 0.5% 15 17 − W THD = 10% 20 22 − W

= 13.2 V; THD = 0.5% − 12 − W

= 13.2 V; THD = 10% − 17 − W

= 1 W − 0.1 − %

= −1 dB − 20 to − Hz

with respect to 15 W 15 000

ON; note 6 34 −−dB ON; note 7 38 −−dB ON; note 8 45 −−dB MUTE; notes 6 and 7 45 −−dB stand-by; notes 6 and 7 80 −−dB

ON; R R

= 0; note 9 − 325 500 µV

= 10 kΩ; note 9 − 350 −µV

MUTE; notes 9 & 10 − 180 −µV

Notes to the characteristics

1. All characteristics are measured using the circuit shown in Fig.4

2. The circuit is DC adjusted at V

= 6 to 18 V and AC operating at VP = 8.5 to 18 V

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

4. Conditions: V11 = 0; short-circuit output to GND; switch V11 to MUTE or ON condition (rise time V11 > 10 µs).

5. Frequency response externally fixed.

6. Ripple rejection measured at the output with a source-impedance of 0 Ω (max. ripple amplitude of 2 V) and a frequency of 100 Hz.

7. Ripple rejection measured at the output with a source-impedance of 0 Ω (max. ripple amplitude of 2 V) and a frequency between 1 and 10 kHz.

8. Ripple rejection measured at the output with a source-impedance of 0 Ω (max. ripple amplitude of 2 V) and a frequency between 100 Hz and 10 kHz. Pin 12 is decoupled with two diodes to ground.

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

10. Noise output voltage independent of RS (Vin = 0).

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Philips Semiconductors Product speciﬁcation

2 x 22 W BTL stereo car radio power ampliﬁer with speaker protection

handbook, full pagewidth

270 nF

input 1

ground (signal)

30 kΩ

mute /

stand-by

11 3 10

100 nF 2200 µF

reference

voltage

R = 4 Ω

TDA1557Q

+ V

input 2

270 nF

30 kΩ

TDA1557Q

power ground (substrate)

Fig.4 Stereo BTL application.

R = 4 Ω

MCD323 - 1

May 1992 8

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Philips Semiconductors Product speciﬁcation

2 x 22 W BTL stereo car radio power ampliﬁer with speaker protection

PACKAGE OUTLINE

DBS13P: plastic DIL-bent-SIL power package; 13 leads (lead length 12 mm)

non-concave

view B: mounting base side

TDA1557Q

SOT141-6

113

0.48

0.38

24.0

23.6

(1)

20.0

19.6

DIMENSIONS (mm are the original dimensions)

UNIT A e

Note

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

A2bpcD

17.0

4.6

4.2

0.75

0.60

15.5

w M

0 5 10 mm

(1)

deD

12.2

10 3.4

11.8

scale

1.7

5.08

LL3m

3.4

12.4

3.1

11.0

2.4

1.6

4.3

2.1

1.8

v M

(1)

0.8

0.25w0.03

2.00

1.45

OUTLINE VERSION

SOT141-6

IEC JEDEC EIAJ

REFERENCES

May 1992 9

EUROPEAN

PROJECTION

ISSUE DATE

92-11-17 95-03-11

Page 10

Philips Semiconductors Product speciﬁcation

2 x 22 W BTL stereo car radio power ampliﬁer with speaker protection

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

“IC Package Databook”

our

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).

TDA1557Q

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

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.

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