|
|
PDF TDA7561 Data sheet ( Hoja de datos )
| Número de pieza | TDA7561 | |
| Descripción | MULTIFUNCTION QUAD POWER AMPLIFIER WITH BUILT-IN DIAGNOSTICS FEATURES | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de TDA7561 (archivo pdf) en la parte inferior de esta página. Total 19 Páginas | ||
|
No Preview Available !
TDA7561
MULTIFUNCTION QUAD POWER AMPLIFIER
WITH BUILT-IN DIAGNOSTICS FEATURES
s DMOS POWER OUTPUT
s HIGH OUTPUT POWER CAPABILITY 4x25W/
4W @ 14.4V, 1KHZ, 10% THD, 4x35W EIAJ
s MAX. OUTPUT POWER 4x60W/2W
s FULL I2C BUS DRIVING:
– ST-BY
– INDEPENDENT FRONT/REAR SOFT PLAY/
MUTE
– SELECTABLE GAIN 26dB - 12dB (FOR LOW
NOISE LINE OUTPUT FUNCTION)
– I2C BUS DIGITAL DIAGNOSTICS
s FULL FAULT PROTECTION
s DC OFFSET DETECTION
s FOUR INDEPENDENT SHORT CIRCUIT
PROTECTION
s CLIPPING DETECTOR
s ESD PROTECTION
DESCRIPTION
The TDA7561 is a new BCD technology QUAD
BRIDGE type of car radio amplifier in Flexiwatt25
MULTIPOWER BCD TECHNOLOGY
MOSFET OUTPUT POWER STAGE
FLEXIWATT25
package specially intended for car radio applications.
Thanks to the DMOS output stage the TDA7561 has
a very low distortion allowing a clear powerful
sound.This device is equipped with a full diagnostics
array that communicates the status of each speaker
through the I2C bus.The possibility to control the con-
figuration and behaviour of the device by means of
the I2C bus makes TDA7561 a very flexible machine.
BLOCK DIAGRAM
CLK DATA
VCC1 VCC2
CD_OUT
REFERENCE
THERMAL
PROTECTION
& DUMP
I2C BUS
MUTE1 MUTE2
CLIP
DETECTOR
IN RF
F
IN RR
R
IN LF
F
IN LR
R
SVR
D00AU1229
December 2002
AC_GND
12/26dB
12/26dB
12/26dB
12/26dB
RF RR LF LR
OUT RF+
SHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
OUT RF-
OUT RR+
SHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
OUT RR-
OUT LF+
SHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
OUT LF-
OUT LR+
SHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
TAB
PW_GND
OUT LR-
S_GND
1/19
1 page  
TDA7561
ELECTRICAL CHARACTERISTCS (continued)
(Refer to the test circuit, VS = 14.4V; RL = 4Ω; f = 1KHz;Tamb = 25°C; unless otherwise specified).
Symbol
Parameter
Test Condition
Min. Typ. Max. Unit
CDLK Clip Det High Leakage Current CD off
0 15 µA
CDSAT Clip Det Sat. Voltage
CD on; ICD = 1mA
150 300 mV
CDTHD Clip Det THD level
1 2%
TURN ON DIAGNOSTICS 1 (Power Amplifier Mode)
Pgnd
Short to GND det. (below this
limit, the Output is considered in
Short Circuit to GND)
Power Amplifier in st-by condition
1.2 V
Pvs Short to Vs det. (above this limit,
the Output isconsidered in Short
Circuit to VS)
Vs -1.2
V
Pnop
Normal operation thresholds.
(Within these limits, the Output
is considered without faults).
1.8 Vs -1.8 V
Lsc Shorted Load det.
0.5 Ω
Lop Open Load det.
130 Ω
Lnop Normal Load det.
1.5 70 Ω
TURN ON DIAGNOSTICS 2 (Line Driver Mode)
Pgnd
Short to GND det. (below this
limit, the Output is considered in
Short Circuit to GND)
Power Amplifier in st-by
1.2 V
Pvs Short to Vs det. (above this limit,
the Output isconsidered in Short
Circuit to VS)
Vs -1.2
V
Pnop
Normal operation thresholds.
(Within these limits, the Output is
considered without faults).
1.8 Vs -1.8 V
Lsc Shorted Load det.
1.5 &
Lop Open Load det.
400 &
Lnop Normal Load det.
4.5 200 &
PERMANENT DIAGNOSTICS 2 (Power Amplifier Mode or Line Driver Mode)
Pgnd
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
1.2 V
Pvs Short to Vs det. (above this limit,
the Output is considered in Short
Circuit to VS)
Vs -1.2
V
Pnop
Normal operation thresholds.
(Within these limits, the Output is
considered without faults)
1.8 Vs -1.8 V
5/19
5 Page 
Figure 17. Restart timing without Diagnostic Enable (Permanent)
Each 1mS time, a sampling of the fault is done
1-2mS
1mS
1mS
1mS
1mS
Overcurrent and short
circuit protection intervention
(i.e. short circuit to GND)
t
Short circuit removed
Figure 18. Restart timing with Diagnostic Enable (Permanent)
1mS
100mS
1mS
1mS
TDA7561
Out
Overcurrent and short
(i.e. short circuit to GND)
t
Short circuit removed
OUTPUT DC OFFSET DETECTION.
Any DC output offset exceeding ±2V are signalled out. This inconvenient might occur as a consequence of ini-
tially 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 1STOP = 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.
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 possible double-fault. It should be taken into account that a short circuit
with the 4 ohm speaker unconnected is considered as double fault.
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. (*)
11/19
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet TDA7561.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| TDA7560 | 4 x 51 W quad bridge car radio amplifier | ST Microelectronics |
| TDA7560A | 4 x 45 W quad bridge car radio amplifier |  STMicroelectronics |
| TDA7561 | MULTIFUNCTION QUAD POWER AMPLIFIER WITH BUILT-IN DIAGNOSTICS FEATURES | ST Microelectronics |
| TDA75616LV | 4 x 45 W power amplifier | STMicroelectronics |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |