TDA7566
4 x 40 W multifunction quad power amplifier
with built-in diagnostics features
Features
■
DMOS power output
■
High output power capability 4 x 25 W/4 @
14.4 V, 1 kHz, 10 % THD, 4 x 40 W max. power
■
Max. output power 4 x 60 W/2
■
Full I2C bus driving:
– Standby
– Independent front/rear soft play/mute
– Selectable gain 26 dB - 12 dB
– I2C bus digital diagnostics
Flexiwatt25
■
Full fault protection
■
DC offset detection
■
Four independent short circuit protection
■
Clipping detector pin with selectable threshold
(1%, 10%)
■
ESD protection
This device is equipped with a full diagnostics
array that communicates the status of each
speaker through the I2C bus.
Description
The TDA7566 is a new BCD technology quad
bridge type of car radio amplifier in Flexiwatt25
package specially intended for car radio
applications.
Table 1.
Thanks to the DMOS output stage the TDA7566
has a very low distortion allowing a clear powerful
sound.
The possibility to control the configuration and
behavior of the device by means of the I2C bus
makes TDA7566 a very flexible product.
Device summary
Order code
Package
Packing
E-TDA7566
Flexiwatt25
Tube
TDA7566(1)
Flexiwatt25
Tube
1. Obsolete product.
September 2013
Doc ID 9801 Rev 6
1/29
www.st.com
1
Contents
TDA7566
Contents
1
Block diagram and application and test circuit . . . . . . . . . . . . . . . . . . . 5
1.1
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2
Application and test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3
Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4
5
3.1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.4
Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Diagnostics functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.1
Turn-on diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
4.2
Permanent diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.3
Output DC offset detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.4
AC diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.5
Multiple faults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.6
Faults availability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.7
I2C programming/reading sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
I2C bus interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.1
Data validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.2
Start and stop conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.3
Byte format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
5.4
Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6
Software specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
7
Examples of bytes sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
8
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
9
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
2/29
Doc ID 9801 Rev 6
TDA7566
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Table 11.
Table 12.
Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Double fault table for turn-on diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
IB1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
IB2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
DB1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
DB2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
DB3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
DB4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Doc ID 9801 Rev 6
3/29
List of figures
TDA7566
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Figure 16.
Figure 17.
Figure 18.
Figure 19.
Figure 20.
Figure 21.
Figure 22.
Figure 23.
Figure 24.
Figure 25.
Figure 26.
Figure 27.
Figure 28.
4/29
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Application and test circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Quiescent current vs. supply voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Output power vs. supply voltage (4 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Output power vs. supply voltage (2 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Distortion vs. output power (4 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Distortion vs. output power (2 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Distortion vs. frequency (4 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Distortion vs. frequency (2 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Crosstalk vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Supply voltage rejection vs. frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Power dissipation and efficiency vs. output power (4 W, Sine) . . . . . . . . . . . . . . . . . . . . . 11
Power dissipation vs. average output power (audio program simulation, 4 W) . . . . . . . . . 11
Power dissipation vs. average output power (audio program simulation, 2 W) . . . . . . . . . 11
Turn - on diagnostic: working principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
SVR and output behavior (case 1: without turn-on diagnostic). . . . . . . . . . . . . . . . . . . . . . 13
SVR and output pin behavior (case 2: with turn-on diagnostic) . . . . . . . . . . . . . . . . . . . . . 13
Thresholds for short to GND/VS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Thresholds for short across the speaker/open speaker . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Thresholds for line-drivers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Restart timing without diagnostic enable (Permanent) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Restart timing with diagnostic enable (Permanent) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Current detection: load impedance magnitude |Z| vs. output peak voltage of the sinus. . . 16
Data validity on the I2C bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Timing diagram on the I2C bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Timing acknowledge clock pulse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Flexiwatt25 mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Doc ID 9801 Rev 6
TDA7566
Block diagram and application and test circuit
1
Block diagram and application and test circuit
1.1
Block diagram
Figure 1.
Block diagram
CLK
REFERENCE
THERMAL
PROTECTION
& DUMP
VCC1
DATA
VCC2
I2C BUS
CD_OUT
CLIP
DETECTOR
MUTE1 MUTE2
F
IN RF
OUT RF+
12/26dB
OUT RFSHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
R
IN RR
OUT RR+
12/26dB
OUT RRSHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
F
IN LF
OUT LF+
12/26dB
OUT LFSHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
R
IN LR
OUT LR+
12/26dB
OUT LRSHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
SVR
AC_GND
RF
RR
LF
LR
D00AU1229
1.2
TAB
S_GND
PW_GND
Application and test circuit
Figure 2.
Application and test circuit
C8
0.1μF
C7
3300μF
Vcc1
Vcc2
6
DATA
20
17
I2C BUS
19
CLK
22
21
C1 0.22μF
IN RF
23
C2 0.22μF
9
14
OUT RR
+
8
7
C3 0.22μF
IN LF
OUT RF
+
24
15
IN RR
+
18
25
11
5
OUT LF
+
2
C4 0.22μF
IN LR
3
12
S-GND
13
16
10
4
1
OUT LR
TAB
47K
C5
1μF
V
C6
10μF
D00AU1212
CD OUT
Doc ID 9801 Rev 6
5/29
Pin description
2
TDA7566
Pin description
Figure 3.
Pin connection (top view)
25
DATA
24
PW_GND RR
23
OUT RR-
22
CK
OUT RR+
20
VCC2
19
OUT RF-
18
PW_GND RF
17
OUT RF+
16
AC GND
15
IN RF
14
IN RR
13
S GND
12
IN LR
11
IN LF
10
SVR
9
OUT LF+
8
PW_GND LF
7
OUT LF-
6
VCC1
OUT LR+
4
CD-OUT
3
OUT LR-
2
PW_GND LR
1
TAB
D99AU1037
6/29
Doc ID 9801 Rev 6
TDA7566
Electrical specifications
3
Electrical specifications
3.1
Absolute maximum ratings
Table 2.
Absolute maximum ratings
Symbol
Value
Unit
Vop
Operating supply voltage
18
V
VS
DC supply voltage
28
V
Vpeak
Peak supply voltage (for t = 50 ms)
50
V
VCK
CK pin voltage
6
V
Data pin voltage
6
V
IO
Output peak current (not repetitive t = 100 s)
8
A
IO
Output peak current (repetitive f > 10 Hz)
6
A
Power dissipation Tcase = 70 °C
85
W
-55 to 150
°C
Value
Unit
1
°C/W
VDATA
Ptot
Tstg, Tj
3.2
Parameter
Storage and junction temperature
Thermal data
Table 3.
Thermal data
Symbol
Rth j-case
Description
Thermal resistance junction-to-case
Max.
3.3
Electrical characteristics
Table 4.
Electrical characteristics
(Refer to the test circuit, VS = 14.4 V; RL = 4 ; f = 1 kHz; GV = 26 dB; Tamb = 25 °C; unless
otherwise specified.)
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
Power amplifier
VS
Supply voltage range
-
8
-
18
V
Id
Total quiescent drain current
-
-
150
300
mA
Max. (VS = 14.4 V)
35
40
-
W
THD = 10 %
THD = 1 %
22
16
25
20
-
W
W
RL = 2 ; EIAJ (VS = 13.7 V)
RL = 2 ; THD 10 %
RL = 2 ; THD 1 %
RL = 2 ; MAX POWER
50
32
25
55
55
38
30
60
-
W
W
W
W
PO
Output power
Doc ID 9801 Rev 6
7/29
Electrical specifications
Table 4.
Electrical characteristics (continued)
(Refer to the test circuit, VS = 14.4 V; RL = 4 ; f = 1 kHz; GV = 26 dB; Tamb = 25 °C; unless
otherwise specified.)
Symbol
THD
TDA7566
Parameter
Total harmonic distortion
Test condition
Min.
Typ.
Max.
Unit
PO = 1 W to 10 W
-
0.04
0.1
%
GV = 12 dB;
VO = 0.1 to 5 VRMS
-
0.02
0.05
%
CT
Cross talk
f = 1 kHz to 10 kHz, RG = 600 W
50
60
-
dB
RIN
Input impedance
-
60
100
130
K
GV1
Voltage gain 1
-
25
26
27
dB
Voltage gain match 1
-
-1
0
1
dB
GV2
Voltage gain 2
-
-
12
-
dB
EIN1
Output noise voltage 1
Rg = 600 20 Hz to 22 kHz
-
35
100
V
EIN2
Output noise voltage 2
Rg = 600 ;
GV = 12 dB; 20 Hz to 22 kHz
-
12
-
V
SVR
Supply voltage rejection
f = 100 Hz to 10 kHz; Vr = 1V pk;
Rg = 600
50
60
-
dB
BW
Power bandwidth
-
100
-
-
KHz
ASB
Standby attenuation
-
90
110
-
dB
ISB
Standby current
-
-
25
100
A
AM
Mute attenuation
-
80
100
-
dB
VOS
Offset voltage
Mute and Play
-100
0
100
mV
VAM
Min. supply voltage threshold
-
7
7.5
8
V
TON
Turn on delay
D2/D1 (IB1) 0 to 1
-
20
50
ms
TOFF
Turn off delay
D2/D1 (IB1) 1 to 0
-
20
50
ms
CDLK
Clip det high leakage current
CD off
-
0
15
A
CDSAT
Clip det sat. voltage
CD on; ICD = 1mA
-
-
300
mV
D0 (IB1) = 0
0
1
2
%
CDTHD
Clip det THD level
D0 (IB1) = 1
5
10
15
%
-
-
1.2
V
Vs -1.2
-
-
V
1.8
-
Vs -1.8
V
GV1
Turn on diagnostics 1 (Power amplifier mode)
Pgnd
Pvs
Pnop
8/29
Short to GND det. (below this
limit, the Output is considered in
Short Circuit to GND)
Short to Vs det. (above this limit,
the Output is considered in Short
Power amplifier in standby
Circuit to VS)
Normal operation
thresholds.(Within these limits,
the Output is considered without
faults).
Doc ID 9801 Rev 6
TDA7566
Table 4.
Electrical specifications
Electrical characteristics (continued)
(Refer to the test circuit, VS = 14.4 V; RL = 4 ; f = 1 kHz; GV = 26 dB; Tamb = 25 °C; unless
otherwise specified.)
Symbol
Parameter
Test condition
Min.
Typ.
Max.
Unit
Lsc
Shorted load det.
-
-
-
0.5
Lop
Open load det.
-
85
-
-
Lnop
Normal load det.
-
1.65
-
45
-
-
1.2
V
Vs -1.2
-
-
V
1.8
-
Vs -1.8
V
Turn on diagnostics 2 (Line driver mode)
Pgnd
Pvs
Pnop
Short to GND det. (below this
limit, the Output is considered in
Short Circuit to GND)
Short to Vs det. (above this limit,
the Output is considered in Short Power amplifier in standby
Circuit to VS)
Normal operation thresholds.
(Within these limits, the Output is
considered without faults).
Lsc
Shorted load det.
-
-
-
2
Lop
Open load det.
-
330
-
-
Lnop
Normal load det.
-
7
-
180
-
-
1.2
V
Vs -1.2
-
-
V
1.8
-
Vs -1.8
V
Power amplifier mode
-
-
0.5
Line driver mode
-
-
2
1.5
2
2.5
V
500
-
-
mA
-
-
250
mA
Permanent diagnostics 2 (Power amplifier mode or line driver mode)
Pgnd
Pvs
Pnop
Short to GND det. (below this
limit, the Output is considered in
Short Circuit to GND)
Power amplifier in Mute or Play,
one or more short circuits
protection activated
Short to Vs det. (above this limit,
the Output is considered in Short Circuit to VS)
Normal operation
thresholds.(Within these limits,
the Output is considered without
faults).
LSC
Shorter Load det.
VO
Offset Detection
INL
Normal load current detection
IOL
Open load current detection
-
Power amplifier in play, AC Input
signals = 0
VO < (VS - 5)pk
I2C bus interface
fSCL
Clock frequency
-
-
400
-
KHz
VIL
Input low voltage
-
-
-
1.5
V
VIH
Input high voltage
-
2.3
-
-
V
Doc ID 9801 Rev 6
9/29
Electrical specifications
TDA7566
3.4
Electrical characteristics curves
Figure 4.
Quiescent current vs. supply
voltage
250
Figure 5.
Output power vs. supply voltage
(4 )
Po (W)
Id (mA)
70
65
230
60
Vin = 0
NO LOADS
210
55
50
190
Po-max
RL = 4 Ohm
f = 1 KHz
45
170
THD= 10 %
40
150
35
130
30
110
25
20
90
THD= 1 %
15
70
10
5
50
8
10
Figure 6.
12
Vs (V)
14
16
18
Output power vs. supply voltage
(2 )
Po (W)
80
75
70
65
60
55
50
45
40
35
30
25
20
15
10
5
8
9
10
12
13
Vs (V)
14
15
16
17
18
Distortion vs. output power (4 )
Figure 7.
10
11
THD (%)
Po-max
Vs = 14.4 V
RL = 4 Ohm
RL = 2 Ohm
f = 1 KHz
1
THD= 10 %
f = 10 KHz
0.1
THD= 1 %
8
9
10
11
12
Vs (V)
13
14
15
f = 1 KHz
16
1
10
Po (W)
Distortion vs. output power (2 )
Figure 8.
0.01
0.1
Distortion vs. frequency (4 )
Figure 9.
THD (%)
THD (%)
10
10
Vs = 14.4 V
RL = 2 Ohm
1
1
Vs = 14.4 V
RL = 4 Ohm
Po = 4 W
f = 10 KHz
0.1
0.01
0.1
f = 1 KHz
1
10
Po (W)
10/29
0.1
0.01
10
Doc ID 9801 Rev 6
100
f (Hz)
1000
10000
TDA7566
Electrical specifications
Figure 10. Distortion vs. frequency (2 )
Figure 11. Crosstalk vs. frequency
THD (%)
CROSSTALK (dB)
10
90
80
Vs = 14.4 V
RL = 2 Ohm
Po = 8 W
1
70
60
Vs = 14.4 V
RL = 4 Ohm
Po = 4 W
Rg = 600 Ohm
50
0.1
40
30
0.01
10
100
1000
20
10
10000
f (Hz)
Figure 12. Supply voltage rejection vs.
frequency
100
f (Hz)
1000
10000
Figure 13. Power dissipation and efficiency vs.
output power (4 , Sine)
SVR (dB)
n (%)
Ptot (W)
90
90
80
80
90
70
70
80
n
Vs = 14.4 V
RL = 4x4 Ohm
f= 1 KHz SINE
70
60
60
60
50
50
40
Rg = 600 Ohm
Vripple = 1 Vpk
40
30
50
Ptot
30
30
20
20
10
10
0
20
10
100
f (Hz)
1000
40
0
10000
2
4
6
8
10
12 14
Po (W)
16
18
20
22
24
0
26
Figure 14. Power dissipation vs. average output Figure 15. Power dissipation vs. average output
power (audio program simulation, 4 )
power (audio program simulation, 2 )
Ptot (W)
Ptot (W)
45
90
80
40
Vs = 14.4 V
RL = 4x4 Ohm
GAUSSIAN NOISE
35
Vs = 14.4 V
RL = 4x2 Ohm
GAUSSIAN NOISE
70
CLIP
START
30
60
CLIP
START
50
25
40
20
30
15
20
10
10
0
5
0
1
2
3
4
5
0
Po (W)
Doc ID 9801 Rev 6
1
2
3
4
Po (W)
5
6
7
8
11/29
Diagnostics functional description
TDA7566
4
Diagnostics functional description
4.1
Turn-on diagnostic
It is activated at the turn-on (standby out) under I2C bus request. Detectable output faults
are:
–
Short to GND
–
Short to VS
–
Short across the speaker
–
Open speaker
To verify if any of the above misconnections are in place, a subsonic (inaudible) current
pulse (Figure 16) is internally generated, sent through the speaker(s) and sunk back.The
Turn On diagnostic status is internally stored until a successive diagnostic pulse is
requested (after a I2C reading).
If the "standby out" and "diag. enable" commands are both given through a single
programming step, the pulse takes place first (power stage still in standby mode, low,
outputs = high impedance).
Afterwards, when the Amplifier is biased, the PERMANENT diagnostic takes place. The
previous Turn On state is kept until a short appears at the outputs.
Figure 16. Turn-on diagnostic: working principle
Vs~5V
Isource
I (mA)
Isource
CH+
Isink
CHIsink
~100ms
t (ms)
Measure time
Figure 17 and 18 show SVR and output waveforms at the turn-on (standby out) with and
without Turn-on diagnostic.
12/29
Doc ID 9801 Rev 6
TDA7566
Diagnostics functional description
Figure 17. SVR and output behavior (case 1: without turn-on diagnostic)
Vsvr
Out
Permanent diagnostic
acquisition time (100mS Typ)
t
Diagnostic Enable
(Permanent)
Bias (power amp turn-on)
FAULT
event
Read Data
Permanent Diagnostics data (output)
permitted time
I2CB DATA
Figure 18. SVR and output pin behavior (case 2: with turn-on diagnostic)
Vsvr
Out
Turn-on diagnostic
acquisition time (100mS Typ)
Diagnostic Enable
(Turn-on)
Permanent diagnostic
acquisition time (100mS Typ)
Turn-on Diagnostics data (output)
permitted time
Bias (power amp turn-on)
permitted time
Diagnostic Enable
(Permanent)
Read Data
FAULT
event
t
Permanent Diagnostics data (output)
permitted time
I2CB DATA
The information related to the outputs status is read and memorized at the end of the
current pulse top. The acquisition time is 100 ms (typ.). No audible noise is generated in the
process. As for short to GND / Vs the fault-detection thresholds remain unchanged from
26 dB to 12 dB gain setting. They are as follows:
Figure 19. Thresholds for short to GND/VS
S.C. to GND
0V
1.2V
x
Normal Operation
1.8V
VS-1.8V
Doc ID 9801 Rev 6
x
S.C. to Vs
VS-1.2V
D01AU1253
VS
13/29
Diagnostics functional description
TDA7566
Concerning short across the speaker / open speaker, the threshold varies from 26 dB to
12 dB gain setting, since different loads are expected (either normal speaker's impedance
or high impedance). The values in case of 26 dB gain are as follows:
Figure 20. Thresholds for short across the speaker/open speaker
S.C. across Load
0V
x
0.5Ω
Normal Operation
1.65Ω
x
Open Load
85Ω
45Ω
Infinite
AC00566
If the Line-Driver mode (Gv= 12 dB and Line Driver Mode diagnostic = 1) is selected, the
same thresholds will change as follows:
Figure 21. Thresholds for line-drivers
S.C. across Load
0Ω
x
2Ω
Normal Operation
7Ω
180Ω
x
Open Load
330Ω
infinite
D02AU1340
4.2
Permanent diagnostics
Detectable conventional faults are:
–
short to GND
–
short to Vs
–
short across the speaker
The following additional features are provided:
–
output offset detection
–
AC diagnostic
The TDA7566 has 2 operating statuses:
14/29
1.
Restart mode. The diagnostic is not enabled. Each audio channel operates
independently from each other. If any of the a.m. faults occurs, only the channel(s)
interested is shut down. A check of the output status is made every 1 ms (Figure 22).
Restart takes place when the overload is removed.
2.
Diagnostic mode. It is enabled via I2C bus and self activates if an output overload (such
to cause the intervention of the short-circuit protection) occurs to the speakers outputs.
Once activated, the diagnostics procedure develops as follows (Figure 23):
–
To avoid momentary re-circulation spikes from giving erroneous diagnostics, a
check of the output status is made after 1ms: if normal situation (no overloads) is
detected, the diagnostic is not performed and the channel returns back active.
–
Instead, if an overload is detected during the check after 1 ms, then a diagnostic
cycle having a duration of about 100 ms is started.
–
After a diagnostic cycle, the audio channel interested by the fault is switched to
Restart mode. The relevant data are stored inside the device and can be read by
the microprocessor. When one cycle has terminated, the next one is activated by
Doc ID 9801 Rev 6
TDA7566
Diagnostics functional description
an I2C reading. This is to ensure continuous diagnostics throughout the car-radio
operating time.
–
To check the status of the device a sampling system is needed. The timing is
chosen at microprocessor level (over half a second is recommended).
Figure 22. Restart timing without diagnostic enable (Permanent)
each 1 ms time, a sampling of the fault is done
Out
1-2mS
1mS
1mS
1mS
1mS
t
Overcurrent and short
circuit protection intervention
(i.e. short circuit to GND)
Short circuit removed
Figure 23. Restart timing with diagnostic enable (Permanent)
1mS
100mS
1mS
1mS
t
Overcurrent and short
Short circuit removed
(i.e. short circuit to GND)
4.3
Output DC offset detection
Any DC output offset exceeding ±2 V are signalled out. This inconvenient might occur as a
consequence of initially defective or aged and worn-out input capacitors feeding a DC
component to the inputs, so putting the speakers at risk of overheating.
This diagnostic has to be performed with low-level output AC signal (or Vin = 0).
The test is run with selectable time duration by microprocessor (from a "start" to a "stop"
command):
START = Last reading operation or setting IB1 - D5 - (OFFSET enable) to 1
STOP = Actual reading operation
Excess offset is signalled out if persistent throughout the assigned testing time. This feature
is disabled if any overloads leading to activation of the short-circuit protection occurs in the
process.
Doc ID 9801 Rev 6
15/29
Diagnostics functional description
4.4
TDA7566
AC diagnostic
It is targeted at detecting accidental disconnection of tweeters in 2-way speaker and, more
in general, presence of capacitive (AC) coupled loads.
This diagnostic is based on the notion that the overall speaker's impedance (woofer +
parallel tweeter) will tend to increase towards high frequencies if the tweeter gets
disconnected, because the remaining speaker (woofer) would be out of its operating range
(high impedance). The diagnostic decision is made according to peak output current
thresholds, as follows:
Iout > 500mApk = normal status
Iout < 250mApk = open tweeter
To correctly implement this feature, it is necessary to briefly provide a signal tone (with the
amplifier in "play") whose frequency and magnitude are such to determine an output current
higher than 500mApk in normal conditions and lower than 250mApk should the parallel
tweeter be missing. The test has to last for a minimum number of 3 sine cycles starting from
the activation of the AC diagnostic function IB2) up to the I2C reading of the results
(measuring period). To confirm presence of tweeter, it is necessary to find at least 3 current
pulses over 500mA over all the measuring period, else an "open tweeter" message will be
issued.
The frequency / magnitude setting of the test tone depends on the impedance
characteristics of each specific speaker being used, with or without the tweeter connected
(to be calculated case by case). High-frequency tones (> 10 KHz) or even ultrasonic signals
are recommended for their negligible acoustic impact and also to maximize the impedance
module's ratio between with tweeter-on and tweeter-off.
Figure 24 shows the Load Impedance as a function of the peak output voltage and the
relevant diagnostic fields.
This feature is disabled if any overloads leading to activation of the short-circuit protection
occurs in the process.
Figure 24. Current detection: load impedance magnitude |Z| vs. output peak voltage
of the sinus
Load |z| (Ohm)
50
Iout (peak) 500mA
10
High current detection area
(Normal load)
D5 = 0 of the DBx bytes
5
3
2
1
1
2
3
4
5
Vout (Peak)
16/29
Doc ID 9801 Rev 6
6
7
8
TDA7566
4.5
Diagnostics functional description
Multiple faults
When more misconnections are simultaneously in place at the audio outputs, it is
guaranteed that at least one of them is initially read out. The others are notified after
successive cycles of I2C reading and faults removal, provided that the diagnostic is enabled.
This is true for both kinds of diagnostic (Turn on and Permanent).
The table below shows all the couples of double-fault possible. It should be taken into
account that a short circuit with the 4 ohm speaker unconnected is considered as double
fault.
Table 5.
Double fault table for turn-on diagnostic
S. GND (so)
S. GND (sk)
S. Vs
S. Across L.
Open L.
S. GND (so)
S. GND
S. GND
S. Vs + S.
GND
S. GND
S. GND
S. GND (sk)
/
S. GND
S. Vs
S. GND
Open L. (*)
S. Vs
/
/
S. Vs
S. Vs
S. Vs
S. Across L.
/
/
/
S. Across L.
N.A.
Open L.
/
/
/
/
Open L. (*)
S. GND (so) / S. GND (sk) in the above table make a distinction according to which of the 2
outputs is shorted to ground (test-current source side= so, test-current sink side = sk). More
precisely, in channels LF and LR, so = CH+, sk = CH-; in channels LR and RF, so = CH-, SK
= CH+.
In Permanent Diagnostic the table is the same, with only a difference concerning Open Load
(*), which is not among the recognizable faults. Should an Open Load be present during the
device's normal working, it would be detected at a subsequent Turn-on Diagnostic cycle (i.e.
at the successive Car Radio Turn-on).
4.6
Faults availability
All the results coming from I2C bus, by read operations, are the consequence of
measurements inside a defined period of time. If the fault is stable throughout the whole
period, it will be sent out. This is true for DC diagnostic (Turn-on and Permanent), for Offset
Detector, for AC Diagnostic (the low current sensor needs to be stable to confirm the Open
tweeter).
To guarantee always resident functions, every kind of diagnostic cycles (Turn on,
Permanent, Offset, AC) will be reactivate after any I2C reading operation. So, when the
micro reads the I2C, a new cycle will be able to start, but the read data will come from the
previous diag. cycle (i.e. The device is in Turn On state, with a short to Gnd, then the short is
removed and micro reads I2C. The short to GND is still present in bytes, because it is the
result of the previous cycle. If another I2C reading operation occurs, the bytes do not show
the short). In general to observe a change in Diagnostic bytes, two I2C reading operations
are necessary.
Doc ID 9801 Rev 6
17/29
Diagnostics functional description
4.7
TDA7566
I2C programming/reading sequence
A correct turn on/off sequence respectful of the diagnostic timings and producing no audible
noises could be as follows (after battery connection):
TURN-ON: (STANDBY OUT + DIAG ENABLE) --- 500 ms (min) --- MUTING OUT
TURN-OFF: MUTING IN --- 20 ms --- (DIAG DISABLE + STANDBY IN)
Car Radio Installation: DIAG ENABLE (write) --- 200 ms --- I2C read (repeat until All faults
disappear).
AC TEST: FEED H.F. TONE -- AC DIAG ENABLE (write) --- WAIT > 3 CYCLES --- I2C read
(repeat I2C reading until tweeter-off message disappears).
OFFSET TEST: Device in Play (no signal) -- OFFSET ENABLE - 30ms - I2C reading (repeat
I2C reading until high-offset message disappears).
18/29
Doc ID 9801 Rev 6
TDA7566
5
I2C bus interface
I2C bus interface
Data transmission from microprocessor to the TDA7566 and vice versa takes place through
the 2 wires I2C BUS interface, consisting of the two lines SDA and SCL (pull-up resistors to
positive supply voltage must be connected).
5.1
Data validity
As shown by Figure 25, the data on the SDA line must be stable during the high period of
the clock.
The HIGH and LOW state of the data line can only change when the clock signal on the SCL
line is LOW.
5.2
Start and stop conditions
As shown by Figure 26 a start condition is a HIGH to LOW transition of the SDA line while
SCL is HIGH.
The stop condition is a LOW to HIGH transition of the SDA line while SCL is HIGH.
5.3
Byte format
Every byte transferred to the SDA line must contain 8 bits. Each byte must be followed by an
acknowledge bit. The MSB is transferred first.
5.4
Acknowledge
The transmitter* puts a resistive HIGH level on the SDA line during the acknowledge clock
pulse (see Figure 27). The receiver** the acknowledges has to pull-down (LOW) the SDA
line during the acknowledge clock pulse, so that the SDA line is stable LOW during this clock
pulse.
* Transmitter
–
master (µP) when it writes an address to the TDA7566
–
slave (TDA7566) when the µP reads a data byte from TDA7566
** Receiver
–
slave (TDA7566) when the µP writes an address to the TDA7566
–
master (µP) when it reads a data byte from TDA7566
Figure 25. Data validity on the I2C bus
SDA
SCL
DATA LINE
STABLE, DATA
VALID
CHANGE
DATA
ALLOWED
Doc ID 9801 Rev 6
D99AU1031
19/29
I2C bus interface
TDA7566
Figure 26. Timing diagram on the I2C bus
SCL
I2CBUS
SDA
D99AU1032
START
STOP
Figure 27. Timing acknowledge clock pulse
SCL
1
2
3
7
8
9
SDA
MSB
START
20/29
D99AU1033
Doc ID 9801 Rev 6
ACKNOWLEDGMENT
FROM RECEIVER
TDA7566
6
Software specifications
Software specifications
All the functions of the TDA7566 are activated by I2C interface.
The bit 0 of the "ADDRESS BYTE" defines if the next bytes are write instruction (from P to
TDA7566) or read instruction (from TDA7566 to µP).
Chip address
D7
1
D0
1
0
1
1
0
0
X
D8 Hex
X = 0 Write to device
X = 1 Read from device
If R/W = 0, the P sends 2 "Instruction Bytes": IB1 and IB2.
Table 6.
IB1
Bit
Instruction decoding bit
D7
0
D6
Diagnostic enable (D6 = 1)
Diagnostic defeat (D6 = 0)
D5
Offset Detection enable (D5 = 1)
Offset Detection defeat (D5 = 0)
D4
Front Channel
Gain = 26dB (D4 = 0)
Gain = 12dB (D4 = 1)
D3
Rear Channel
Gain = 26dB (D3 = 0)
Gain = 12dB (D3 = 1)
D2
Mute front channels (D2 = 0)
Unmute front channels (D2 = 1)
D1
Mute rear channels (D1 = 0)
Unmute rear channels (D1 = 1)
D0
CD 2% (D0 = 0)
CD 10% (D0 = 1)
Doc ID 9801 Rev 6
21/29
Software specifications
Table 7.
TDA7566
IB2
Bit
Instruction decoding bit
D7
0
D6
0
D5
0
D4
Standby on - Amplifier not working - (D4 = 0)
Standby off - Amplifier working - (D4 = 1)
D3
Power amplifier mode diagnostic (D3 = 0)
Line driver mode diagnostic (D3 = 1)
D2
Current detection diagnostic enabled (D2 = 1)
Current detection diagnostic defeat (D2 = 0)
D1
0
D0
0
If R/W = 1, the TDA7566 sends 4 "Diagnostics Bytes" to mP: DB1, DB2, DB3 and DB4.
Table 8.
DB1
Bit
22/29
Instruction decoding bit
D7
Thermal warning active (D7 = 1)
D6
Diag. cycle not activated or not terminated (D6 = 0)
Diag. cycle terminated (D6 = 1)
D5
Channel LF
Current detection
Output peak current < 250mA - Open load (D5 = 1)
Output peak current > 500mA - Open load (D5 = 0)
D4
Channel LF
Turn-on diagnostic (D4 = 0)
Permanent diagnostic (D4 = 1)
D3
Channel LF
Normal load (D3 = 0)
Short load (D3 = 1)
D2
Channel LF
Turn-on diag.: No open load (D2 = 0)
Open load detection (D2 = 1)
Offset diag.: No output offset (D2 = 0)
Output offset detection (D2 = 1)
D1
Channel LF
No short to Vcc (D1 = 0)
Short to Vcc (D1 = 1)
D0
Channel LF
No short to GND (D1 = 0)
Short to GND (D1 = 1)
Doc ID 9801 Rev 6
TDA7566
Software specifications
Table 9.
DB2
Bit
Instruction decoding bit
D7
Offset detection not activated (D7 = 0)
Offset detection activated (D7 = 1)
D6
Current sensor not activated (D6 = 0)
Current sensor activated (D6 = 1)
D5
Channel LR
Current detection
Output peak current < 250mA - Open load (D5 = 1)
Output peak current > 500mA - Open load (D5 = 0)
D4
Channel LR
Turn-on diagnostic (D4 = 0)
Permanent diagnostic (D4 = 1)
D3
Channel LR
Normal load (D3 = 0)
Short load (D3 = 1)
D2
Channel LR
Turn-on diag.: No open load (D2 = 0)
Open load detection (D2 = 1)
Permanent diag.: No output offset (D2 = 0)
Output offset detection (D2 = 1)
D1
Channel LR
No short to Vcc (D1 = 0)
Short to Vcc (D1 = 1)
D0
Channel LR
No short to GND (D1 = 0)
Short to GND (D1 = 1)
Doc ID 9801 Rev 6
23/29
Software specifications
Table 10.
TDA7566
DB3
Bit
24/29
Instruction decoding bit
D7
Standby status (= IB1 - D4)
D6
Diagnostic status (= IB1 - D6)
D5
Channel RF
Current detection
Output peak current < 250mA - Open load (D5 = 1)
Output peak current > 500mA - Open load (D5 = 0)
D4
Channel RF
Turn-on diagnostic (D4 = 0)
Permanent diagnostic (D4 = 1)
D3
Channel RF
Normal load (D3 = 0)
Short load (D3 = 1)
D2
Channel RF
Turn-on diag.: No open load (D2 = 0)
Open load detection (D2 = 1)
Permanent diag.: No output offset (D2 = 0)
Output offset detection (D2 = 1)
D1
Channel RF
No short to Vcc (D1 = 0)
Short to Vcc (D1 = 1)
D0
Channel RF
No short to GND (D1 = 0)
Short to GND (D1 = 1)
Doc ID 9801 Rev 6
TDA7566
Software specifications
Table 11.
DB4
Bit
Instruction decoding bit
D7
X
D6
X
D5
Channel R
Current detection
Output peak current < 250 mA - Open load (D5 = 1)
Output peak current > 500 mA - Open load (D5 = 0)
D4
Channel RR
Turn-on diagnostic (D4 = 0)
Permanent diagnostic (D4 = 1)
D3
Channel RR
Normal load (D3 = 0)
Short load (D3 = 1)
D2
Channel RR
Turn-on diag.: No open load (D2 = 0)
Open load detection (D2 = 1)
Permanent diag.: No output offset (D2 = 0)
Output offset detection (D2 = 1)
D1
Channel RR
No short to Vcc (D1 = 0)
Short to Vcc (D1 = 1)
D0
Channel RR
No short to GND (D1 = 0)
Short to GND (D1 = 1)
Doc ID 9801 Rev 6
25/29
Examples of bytes sequence
7
TDA7566
Examples of bytes sequence
1 - Turn-on diagnostic - Write operation
Start
Address byte with D0 = 0
ACK
IB1 with D6 = 1
ACK
IB2
ACK
STOP
2 - Turn-on diagnostic - Read operation
Start
Address byte with D0 = 1
ACK
DB1
ACK
DB2
ACK
DB3
ACK
DB4
ACK
STOP
The delay from 1 to 2 can be selected by software, starting from 1ms
3a - Turn-on of the power amplifier with 26dB gain, mute on, diagnostic defeat.
Start
Address byte with D0 = 0
ACK
IB1
ACK
X000000X
IB2
ACK
STOP
ACK
STOP
ACK
STOP
XXX1X0XX
3b - Turn-off of the power amplifier
Start
Address byte with D0 = 0
ACK
IB1
ACK
X0XXXXXX
IB2
XXX0XXXX
4 - Offset detection procedure enable
Start
Address byte with D0 = 0
ACK
IB1
ACK
XX1XX11X
IB2
XXX1X0XX
5 - Offset detection procedure stop and reading operation (the results are valid only for the offset
detection bits (D2 of the bytes DB1, DB2, DB3, DB4).
Start
Address byte with D0 = 1
ACK
DB1
ACK
DB2
ACK
DB3
ACK
DB4
ACK
STOP
●
The purpose of this test is to check if a D.C. offset (2V typ.) is present on the outputs, produced by
input capacitor with anomalous leakage current or humidity between pins.
●
The delay from 4 to 5 can be selected by software, starting from 1ms
6 - Current detection procedure start (the AC inputs must be with a proper signal that depends on the
type of load)
Start
Address byte with D0 = 0
ACK
IB1
ACK
XX01111X
IB2
ACK
STOP
XXX1X1XX
7 - Current detection reading operation (the results valid only for the current sensor detection bits - D5 of
the bytes DB1, DB2, DB3, DB4).
Start
Address byte with D0 = 1
ACK
DB1
ACK
DB2
ACK
DB3
ACK
DB4
ACK
STOP
●
During the test, a sinus wave with a proper amplitude and frequency (depending on the loudspeaker
under test) must be present. The minimum number of periods that are needed to detect a normal
load is 5.
●
The delay from 6 to 7 can be selected by software, starting from 1ms.
26/29
Doc ID 9801 Rev 6
TDA7566
Package information
In order to meet environmental requirements, ST offers these devices in different grades of
ECOPACK® packages, depending on their level of environmental compliance. ECOPACK®
specifications, grade definitions and product status are available at: www.st.com.
ECOPACK® is an ST trademark.
Figure 28. Flexiwatt25 mechanical data and package dimensions
DIM.
A
B
C
D
E
F (1)
G
G1
H (2)
H1
H2
H3
L (2)
L1
L2 (2)
L3
L4
L5
M
M1
N
O
R
R1
R2
R3
R4
V
V1
V2
V3
MIN.
4.45
1.80
0.75
0.37
0.80
23.75
28.90
22.07
18.57
15.50
7.70
3.70
3.60
mm
TYP.
4.50
1.90
1.40
0.90
0.39
1.00
24.00
29.23
17.00
12.80
0.80
22.47
18.97
15.70
7.85
5
3.5
4.00
4.00
2.20
2
1.70
0.5
0.3
1.25
0.50
MAX.
4.65
2.00
MIN.
0.175
0.070
1.05
0.42
0.57
1.20
24.25
29.30
0.029
0.014
0.031
0.935
1.139
22.87
19.37
15.90
7.95
0.869
0.731
0.610
0.303
4.30
4.40
0.145
0.142
inch
TYP.
0.177
0.074
0.055
0.035
0.015
0.040
0.945
1.150
0.669
0.503
0.031
0.884
0.747
0.618
0.309
0.197
0.138
0.157
0.157
0.086
0.079
0.067
0.02
0.12
0.049
0.019
MAX.
0.183
0.079
OUTLINE AND
MECHANICAL DATA
0.041
0.016
0.022
0.047
0.955
1.153
0.904
0.762
0.626
0.313
0.169
0.173
Flexiwatt25 (vertical)
5˚ (T p.)
3˚ (Typ.)
20˚ (Typ.)
45˚ (Typ.)
(1): dam-bar protusion not included
(2): molding protusion included
V
C
B
V
H
H1
V3
A
H2
O
H3
R3
L4
R4
V1
R2
L2
N
R
L3
8
Package information
L
L1
V1
V2
R2
D
R1
L5
Pin 1
R1
R1
E
G
G1
F
FLEX25ME
M
M1
7034862
Doc ID 9801 Rev 6
27/29
Revision history
9
TDA7566
Revision history
Table 12.
28/29
Document revision history
Date
Revision
Changes
20-Sep-2003
1
Initial release.
12-Jul-2006
2
Document reformatted.
Corrected the values of INL and IOL parameters in the Table 4:
Electrical characteristics.
18-Dec-2006
3
Updated Figure 20 and 21.
29-Sep-2008
4
Updated Table 4: Electrical characteristics.
Updated Figure 20.
11-Oct-2010
5
Modified Table 1: Device summary on page 1.
17-Sep-2013
6
Updated Disclaimer.
Doc ID 9801 Rev 6
TDA7566
Please Read Carefully:
Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the
right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any
time, without notice.
All ST products are sold pursuant to ST’s terms and conditions of sale.
Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no
liability whatsoever relating to the choice, selection or use of the ST products and services described herein.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this
document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products
or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such
third party products or services or any intellectual property contained therein.
UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS
OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
ST PRODUCTS ARE NOT DESIGNED OR AUTHORIZED FOR USE IN: (A) SAFETY CRITICAL APPLICATIONS SUCH AS LIFE
SUPPORTING, ACTIVE IMPLANTED DEVICES OR SYSTEMS WITH PRODUCT FUNCTIONAL SAFETY REQUIREMENTS; (B)
AERONAUTIC APPLICATIONS; (C) AUTOMOTIVE APPLICATIONS OR ENVIRONMENTS, AND/OR (D) AEROSPACE APPLICATIONS
OR ENVIRONMENTS. WHERE ST PRODUCTS ARE NOT DESIGNED FOR SUCH USE, THE PURCHASER SHALL USE PRODUCTS AT
PURCHASER’S SOLE RISK, EVEN IF ST HAS BEEN INFORMED IN WRITING OF SUCH USAGE, UNLESS A PRODUCT IS
EXPRESSLY DESIGNATED BY ST AS BEING INTENDED FOR “AUTOMOTIVE, AUTOMOTIVE SAFETY OR MEDICAL” INDUSTRY
DOMAINS ACCORDING TO ST PRODUCT DESIGN SPECIFICATIONS. PRODUCTS FORMALLY ESCC, QML OR JAN QUALIFIED ARE
DEEMED SUITABLE FOR USE IN AEROSPACE BY THE CORRESPONDING GOVERNMENTAL AGENCY.
Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void
any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any
liability of ST.
ST and the ST logo are trademarks or registered trademarks of ST in various countries.
Information in this document supersedes and replaces all information previously supplied.
The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.
© 2013 STMicroelectronics - All rights reserved
STMicroelectronics group of companies
Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Philippines - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America
www.st.com
Doc ID 9801 Rev 6
29/29
工商网监
湘ICP备2023018690号
