TDA8566
2
×
40 W/2
Ω
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
I
2
C-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
Ω
load or 2
×
40 W in a 2
Ω
load. It has a differential input stage
and 2 diagnostic outputs. The device is primarily developed for car radio applications.
2. Features
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Differential inputs
Very high Common Mode Rejection Ratio (CMRR)
High common mode input signal handling
Requires very few external components
High output power
4
Ω
and 2
Ω
load driving capability
Low offset voltage at output
Fixed gain
Diagnostic facility (distortion, short-circuit and temperature pre-warning)
Good ripple rejection
Mode select switch (operating, mute and standby)
Load dump protection
Short-circuit proof to ground, to V
P
and across the load
Low power dissipation in any short-circuit condition
Thermally protected
Reverse polarity safe
Protected against electrostatic discharge
No switch-on/switch-off plops
Low thermal resistance
TDA8566TH1 is pin compatible with TDA1566TH
NXP Semiconductors
TDA8566
2
×
40 W/2
Ω
stereo BTL car radio power amplifier
3. Quick reference data
Table 1.
Quick reference data
V
P
= 14.4 V; T
amb
= 25
°
C; f
i
= 1 kHz; measured in test circuit of
Figure 9;
unless otherwise
specified.
Symbol Parameter
V
P
I
ORM
I
q
I
stb
Z
i
P
o
SVRR
α
cs
CMRR
G
v
V
n(o)
[1]
[2]
[3]
[4]
Conditions
[1]
Min
6
-
Typ
14.4
-
115
0.1
120
25
40
60
50
75
26
85
Max
18
7.5
180
10
150
-
-
-
-
-
27
120
Unit
V
A
mA
µA
kΩ
W
W
dB
dB
dB
dB
µV
supply voltage
repetitive peak output
current
quiescent current
standby current
input impedance
output power
supply voltage ripple
rejection
channel separation
differential
R
L
= 4
Ω;
THD = 10 %
R
L
= 2
Ω;
THD = 10 %
operating
P
o
= 25 W; R
s
= 10 kΩ
R
L
=
∞ Ω
-
-
100
21
33
[2]
50
45
common mode rejection R
s
= 0
Ω
ratio
closed loop voltage gain
noise output voltage
operating; R
s
= 0
Ω
[3]
60
25
[4]
-
The circuit is DC adjusted at V
P
= 6 V to 18 V and AC operating at V
P
= 8.5 V to 18 V.
V
ripple
= V
ripple(max)
= 2 V (p-p); R
s
= 0
Ω.
Common mode rejection ratio measured at the output (over R
L
) with both inputs tied together;
V
common
≤
3.5 V (RMS); f
i
= 100 Hz to 10 kHz; R
s
= 0
Ω.
Noise measured in a bandwidth of 20 Hz to 20 kHz.
4. Ordering information
Table 2.
Ordering information
Package
Name
TDA8566TH
TDA8566TH1
TDA8566Q
HSOP20
HSOP24
DBS17P
Description
plastic, heatsink small outline package; 20 leads; low stand-off height
plastic, heatsink small outline package; 24 leads; low stand-off height
plastic DIL-bent-SIL power package; 17 leads (lead length 12 mm)
Version
SOT418-3
SOT566-3
SOT243-1
Type number
TDA8566_6
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 06 — 15 October 2007
2 of 21
NXP Semiconductors
TDA8566
2
×
40 W/2
Ω
stereo BTL car radio power amplifier
5. Block diagram
V
P1
IN1+
mute
switch
V
P2
CM
IN1−
V
A
2.3
kΩ
2.3 kΩ
OUT1+
mute
switch
(9×)
CM
V
A
60
kΩ
60
kΩ
2.3
kΩ
2.3 kΩ
(9×)
OUT1−
n.c.
standby
switch
V
A
standby
reference
voltage
MODE
TDA8566
mute
switch
V
ref
SGND
1×
CLIP
CLIP
DIAG
mute
reference
voltage
mute
switch
CM
DIAG
60
kΩ
60
kΩ
IN2+
IN2−
V
A
2.3
kΩ
2.3 kΩ
OUT2+
mute
switch
(9×)
CM
V
A
2.3
kΩ
OUT2−
HEATTAB
(1)
2.3 kΩ
(9×)
PGND2
PGND1
mgu358
(1) Pin HEATTAB is available in TDA8566TH1 only.
Fig 1. Block diagram
TDA8566_6
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 06 — 15 October 2007
3 of 21
NXP Semiconductors
TDA8566
2
×
40 W/2
Ω
stereo BTL car radio power amplifier
6. Pinning information
6.1 Pinning
HEATTAB 24
MODE 20
V
P2
19
OUT2− 18
PGND2 17
OUT2+ 16
OUT1− 15
PGND1 14
OUT1+ 13
V
P1
12
CLIP 11
001aag902
001aah015
1
2
3
4
5
DIAG
IN2+
IN2−
n.c.
n.c.
n.c.
MODE
n.c.
n.c.
1
2
3
4
DIAG
IN2+
IN2−
n.c.
n.c.
n.c.
n.c.
IN1+
IN1−
V
P2
23
n.c. 22
OUT2− 21
PGND2 20
OUT2+ 19
OUT1− 18
PGND1 17
OUT1+ 16
n.c. 15
V
P1
14
CLIP 13
TDA8566TH
5
6
7
8
9
TDA8566TH1
6
7
8
9
10 IN1+
11 IN1−
12 SGND
10 SGND
Fig 2. Pin configuration TDA8566TH
Fig 3. Pin configuration TDA8566TH1
IN1+
IN1−
SGND
CLIP
V
P1
OUT1+
PGND1
OUT1−
n.c.
1
2
3
4
5
6
7
8
9
TDA8566Q
OUT2+ 10
PGND2 11
OUT2− 12
V
P2
13
MODE 14
DIAG 15
IN2+ 16
IN2− 17
001aah059
Fig 4. Pin configuration TDA8566Q
TDA8566_6
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 06 — 15 October 2007
4 of 21
NXP Semiconductors
TDA8566
2
×
40 W/2
Ω
stereo BTL car radio power amplifier
6.2 Pin description
Table 3.
Symbol
DIAG
IN2+
IN2−
n.c.
n.c.
n.c.
n.c.
n.c.
n.c.
IN1+
IN1−
SGND
CLIP
V
P1
n.c.
OUT1+
PGND1
OUT1−
n.c.
OUT2+
PGND2
OUT2−
n.c.
V
P2
MODE
HEATTAB
Table 4.
Symbol
IN1+
IN1−
SGND
CLIP
V
P1
OUT1+
PGND1
OUT1−
n.c.
TDA8566_6
Pin description TDA8566TH and TDA8566TH1
Pin
TDA8566TH
1
2
3
4
5
6
7
-
-
8
9
10
11
12
-
13
14
15
-
16
17
18
-
19
20
-
TDA8566TH1
1
2
3
4
5
6
-
8
9
10
11
12
13
14
15
16
17
18
-
19
20
21
22
23
7
24
short-circuit and temperature pre-warning
diagnostic output
channel 2 input positive
channel 2 input negative
not connected
not connected
not connected
not connected
not connected
not connected
channel 1 input positive
channel 1 input negative
signal ground
clip detection output
supply voltage 1
not connected
channel 1 output positive
power ground 1
channel 1 output negative
not connected
channel 2 output positive
power ground 2
channel 2 output negative
not connected
supply voltage 2
mode select switch input (standby/mute/operating)
connect to ground, used for test purposes only
Description
Pin description TDA8566Q
Pin
1
2
3
4
5
6
7
8
9
Description
channel 1 input positive
channel 1 input negative
signal ground
clip detection output
supply voltage 1
channel 1 output positive
power ground 1
channel 1 output negative
not connected
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 06 — 15 October 2007
5 of 21
