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PDF TDA8566 Data sheet ( Hoja de datos )

Número de pieza TDA8566
Descripción stereo BTL car radio power amplifier
Fabricantes NXP Semiconductors 
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TDA8566
2 × 40 W/2 stereo BTL car radio power amplifier with
differential inputs and diagnostic outputs
Rev. 06 — 15 October 2007
Product data sheet
1. General description
The TDA8566 is an integrated class-B output amplifier which is available in several
packages. TDA8566TH is contained in a 20-lead small outline plastic package. The
TDA8566TH1 is a 24-lead small outline plastic package which is pin compatible with the
I2C-bus controlled amplifier TDA1566TH for one board layout. TDA8566Q is a 17-pin
DIL-bent-SIL package.
The device contains 2 amplifiers in a Bridge-Tied Load (BTL) configuration. The output
power is 2 × 25 W in a 4 load or 2 × 40 W in a 2 load. It has a differential input stage
and 2 diagnostic outputs. The device is primarily developed for car radio applications.
2. Features
I Differential inputs
I Very high Common Mode Rejection Ratio (CMRR)
I High common mode input signal handling
I Requires very few external components
I High output power
I 4 and 2 load driving capability
I Low offset voltage at output
I Fixed gain
I Diagnostic facility (distortion, short-circuit and temperature pre-warning)
I Good ripple rejection
I Mode select switch (operating, mute and standby)
I Load dump protection
I Short-circuit proof to ground, to VP and across the load
I Low power dissipation in any short-circuit condition
I Thermally protected
I Reverse polarity safe
I Protected against electrostatic discharge
I No switch-on/switch-off plops
I Low thermal resistance
I TDA8566TH1 is pin compatible with TDA1566TH

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TDA8566 pdf
NXP Semiconductors
TDA8566
2 × 40 W/2 stereo BTL car radio power amplifier
6.2 Pin description
Table 3. Pin description TDA8566TH and TDA8566TH1
Symbol Pin
Description
TDA8566TH TDA8566TH1
DIAG
1
1
short-circuit and temperature pre-warning
diagnostic output
IN2+
2
2
channel 2 input positive
IN2
3
3
channel 2 input negative
n.c. 4 4 not connected
n.c. 5 5 not connected
n.c. 6 6 not connected
n.c. 7
-
not connected
n.c. -
8 not connected
n.c. -
9 not connected
IN1+
8
10 channel 1 input positive
IN1
9
11 channel 1 input negative
SGND
10
12
signal ground
CLIP
11
13
clip detection output
VP1 12 14 supply voltage 1
n.c. -
15 not connected
OUT1+
13
16
channel 1 output positive
PGND1
14
17
power ground 1
OUT1
15
18
channel 1 output negative
n.c. - - not connected
OUT2+
16
19
channel 2 output positive
PGND2
17
20
power ground 2
OUT2
18
21
channel 2 output negative
n.c. -
22 not connected
VP2 19 23 supply voltage 2
MODE
20
7
mode select switch input (standby/mute/operating)
HEATTAB -
24 connect to ground, used for test purposes only
TDA8566_6
Product data sheet
Table 4.
Symbol
IN1+
IN1
SGND
CLIP
VP1
OUT1+
PGND1
OUT1
n.c.
Pin description TDA8566Q
Pin Description
1 channel 1 input positive
2 channel 1 input negative
3 signal ground
4 clip detection output
5 supply voltage 1
6 channel 1 output positive
7 power ground 1
8 channel 1 output negative
9 not connected
Rev. 06 — 15 October 2007
© NXP B.V. 2007. All rights reserved.
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TDA8566 arduino
NXP Semiconductors
TDA8566
2 × 40 W/2 stereo BTL car radio power amplifier
Table 8. Dynamic characteristics …continued
VP = 14.4 V; Tamb = 25 °C; RL = 2 ; fi = 1 kHz; measured in test circuit of Figure 9; unless
otherwise specified.
Symbol Parameter
Conditions
Min Typ Max Unit
Vo(mute) output signal
Vin = Vin(max) = 1 V (RMS)
-
-
2 mV
voltage in mute
CMRR
common mode
rejection ratio
Rs = 0
Rs = 45 k
[5] 60 75 -
[6] 40
-
-
dB
dB
[1] Dynamic distortion detector active; pin CLIP is LOW.
[2] Frequency response externally fixed.
[3] Vripple = Vripple(max) = 2 V (p-p); Rs = 0 .
[4] Noise measured in a bandwidth of 20 Hz to 20 kHz.
[5] Common mode rejection ratio measured at the output (over RL) with both inputs tied together;
Vcommon 3.5 V (RMS); fi = 100 Hz to 10 kHz; Rs = 0 .
[6] Common mode rejection ratio measured at the output (over RL) with both inputs tied together;
Vcommon 3.5 V (RMS); fi = 1 kHz; Rs = 45 k. The mismatch of the input coupling capacitors is excluded.
12. Application information
12.1 Diagnostic output
Special care must be taken in the PCB layout to separate pin CLIP from
pins IN1+, IN1, IN2+ and IN2to minimize the crosstalk between the CLIP output and
the inputs.
12.2 Mode select switch
To avoid switch-on plops, it is advisable to keep the amplifier in the mute mode during
150 ms (charging of the input capacitors at pins IN1+, IN1, IN2+ and IN2). The circuit
in Figure 8 slowly ramps-up the voltage at the mode select switch pin when switching on
and results in fast muting when switching off.
+VP
S
10 k
100
Fig 8. Mode select switch circuit
+
47 µF
mode
select
switch
100 k
mgd102
TDA8566_6
Product data sheet
Rev. 06 — 15 October 2007
© NXP B.V. 2007. All rights reserved.
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