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TDA8563AQ
2 x 40 W/2 ohm stereo BTL car radio power amplifier with diagnostic facility
Philips Semiconductors Product specification×
40 W/2 Ω stereo BTL car radio power
amplifier with diagnostic facility TDA8563AQ
FEATURES Requires very few external components High output power4 Ω and 2 Ω load impedance Low output offset voltage Fixed gain Diagnostic facility (distortion, short-circuit and
temperature detection) Good ripple rejection Mode select switch (operating, mute and standby) Load dump protection Short-circuit safe to ground, to VP and across the load Low power dissipation in any short-circuit condition Thermally protected Reverse polarity safe Electrostatic discharge protection No switch-on/switch-off plop Flexible leads Low thermal resistance.
GENERAL DESCRIPTIONThe TDA8563AQ is an integrated class-B output amplifier
in a 13-lead single-in-line (SIL) power package.
It contains 2×40 W/2 Ω amplifiers in BTL configuration.
The device is primarily developed for car radio
applications.
QUICK REFERENCE DATA
ORDERING INFORMATION
Philips Semiconductors Product specification× 40 W/2 Ω stereo BTL car radio power
amplifier with diagnostic facility TDA8563AQ
BLOCK DIAGRAM
Philips Semiconductors Product specification× 40 W/2 Ω stereo BTL car radio power
amplifier with diagnostic facility TDA8563AQ
PINNING
FUNCTIONAL DESCRIPTIONThe TDA8563AQ contains two identical amplifiers and can
be used for bridge applications. The gain of each amplifier
is fixed at 26 dB. Special features of the device are as
follows.
Mode select switch (pin 11) Standby: low supply current (<100 μA) Mute: input signal suppressed Operating: normal on condition.
Since this pin has a very low input current (<40 μA), a low
cost supply switch can be applied.
To avoid switch-on plops, it is advised to keep the amplifier
in the mute mode during ≥100 ms (charging of the input
capacitors at pin 1 and pin 13). During switching from
standby to mute, the slope should be at least 18 V/s.
This can be achieved by: Microprocessor control External timing circuit (see Fig.7).
Diagnostic output (pin 12)DYNAMIC DISTORTION DETECTOR (DDD)
At the onset of clipping of one or more output stages, the
dynamic distortion detector becomes active and pin12
goes low. This information can be used to drive a sound
processor or DC volume control to attenuate the input
signal and thus limit the distortion. The output level of
pin 12 is independent of the number of channels that are
clipping (see Fig.3).
Philips Semiconductors Product specification× 40 W/2 Ω stereo BTL car radio power
amplifier with diagnostic facility TDA8563AQ
SHORT-CIRCUIT PROTECTION
When a short-circuit occurs at one or more outputs to
ground or to the supply voltage, the output stages are
switched off until the short-circuit is removed and the
device is switched on again, with a delay of approximately ms, after removal of the short-circuit. During this
short-circuit condition, pin 12 is continuously low.
When a short-circuit across the load of one or both
channels occurs the output stages are switched off during
approximately 20 ms. After that time it is checked during
approximately 50 μs to see whether the short-circuit is still
present. Due to this duty cycle of 50 μs/20 ms the average
current consumption during this short-circuit condition is
very low (approximately 40 mA).
During this short-circuit condition, pin 12 is low for 20 ms
and high for 50 μs (see Fig.4).
The power dissipation in any short-circuit condition is
very low.
TEMPERATURE DETECTION
When the virtual junction temperature Tvj reaches 150 °C,
pin 12 will become continuously low.
OPEN COLLECTOR OUTPUT
Pin 12 is an open collector output, which allows pin 12 of
more devices being tied together.
Philips Semiconductors Product specification× 40 W/2 Ω stereo BTL car radio power
amplifier with diagnostic facility TDA8563AQ
LIMITING VALUESIn accordance with the Absolute Maximum Rating System (IEC 134).
THERMAL CHARACTERISTICS
Philips Semiconductors Product specification× 40 W/2 Ω stereo BTL car radio power
amplifier with diagnostic facility TDA8563AQ
DC CHARACTERISTICS= 14.4 V; Tamb =25 °C; measured in Fig.6; unless otherwise specified.
Notes The circuit is DC adjusted at VP=6to18 V and AC operating at VP= 8.5to18V. At 18V
Philips Semiconductors Product specification× 40 W/2 Ω stereo BTL car radio power
amplifier with diagnostic facility TDA8563AQ
AC CHARACTERISTICS= 14.4 V; RL =2 Ω; f=1 kHz; Tamb =25 °C; measured in Fig.6; unless otherwise specified.
Notes Dynamic distortion detector active. Frequency response externally fixed. Vripple =Vripple(max)=2 V (p-p); Rs =0Ω. B=20 Hzto20 kHz; Rs =0Ω. B=20 Hzto20 kHz; Rs =10kΩ. B=20 Hzto20 kHz; independent of Rs. Po=25 W; Rs =10kΩ. Vi =Vi(max)=1 V (RMS).
Philips Semiconductors Product specification× 40 W/2 Ω stereo BTL car radio power
amplifier with diagnostic facility TDA8563AQ
AC CHARACTERISTICS= 14.4 V; RL =4 Ω; f=1 kHz; Tamb =25 °C; measured in Fig.6; unless otherwise specified.
Philips Semiconductors Product specification× 40 W/2 Ω stereo BTL car radio power
amplifier with diagnostic facility TDA8563AQ
TEST AND APPLICATION INFORMATION
