The TDA7561 is a new BCD technology QUAD
BRIDGE type of car radio amplifier in Flexiwatt25
BLOCK DIAGRAM
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 I
figuration and behaviour of the device by means of
2
the I
2
C bus.The possibility to control the con-
C bus makes TDA 7561 a very flexible machine.
V
CC1VCC2DATACD_OUTCLK
IN RF
IN RR
IN LR
December 2002
IN LF
REFERENCE
F
R
F
R
SVRRF RR LF LRTABS_GNDAC_GND
D00AU1229
PROTECTION
& DUMP
I2C BUSTHERMAL
MUTE1MUTE2
12/26dB
12/26dB
12/26dB
12/26dB
CLIP
DETECTOR
SHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
SHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
SHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
SHORT CIRCUIT
PROTECTION &
DIAGNOSTIC
PW_GND
OUT RF+
OUT RF-
OUT RR+
OUT RR-
OUT LF+
OUT LF-
OUT LR+
OUT LR-
1/19
TDA7561
ABSOLUTE MAXIMUM RATINGS
SymbolParameterValueUnit
Operating Supply Voltage18V
DC Supply Voltage28V
S
Peak Supply Voltage (for t = 50ms)50V
CK pin Voltage6V
Data Pin Voltage6V
Output Peak Current (not repetitive t = 100ms)8A
Output Peak Current (repetitive f > 10Hz)6A
Power Dissipation Tcase = 70°C85W
, TjStorage and Junction Temperature-55 to 150°C
V
V
T
V
op
V
peak
V
CK
DATA
I
O
I
O
P
tot
stg
THERMAL DATA
SymbolParameterValueUnit
R
th j-case
Thermal Resistance Junction to caseMax.1°C
PIN CONNECTION
25
24
23
22
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
4
3
2
1
DATA
PW_GND RR
OUT RRCK
OUT RR+
V
CC2
OUT RFPW_GND RF
OUT RF+
AC GND
IN RF
IN RR
S GND
IN LR
IN LF
SVR
OUT LF+
PW_GND LF
OUT LFV
CC1
OUT LR+
CD-OUT
OUT LRPW_GND LR
TAB
D99AU1037
2/19
Figure 1. Tes t an d A pplication Ci rc ui t
TDA7561
I2C BUS
IN RF
IN RR
IN LF
IN LR
DATA
CLK
C1 0.22µF
C2 0.22µF
C3 0.22µF
C4 0.22µF
C8
0.1µF
S-GND
C7
3300µF
25
22
15
14
11
12
13
16104
C5
1µF
C6
10µF
Vcc1Vcc2
620
CD OUT
17
18
19
21
24
23
47K
+
OUT RF
+
OUT RR
+
9
8
7
+
5
2
3
TAB
1
V
OUT LF
OUT LR
D00AU1212
3/19
TDA7561
ELECTRICAL CHARACTERISTCS
(Refer to the test circuit, VS = 14.4V; RL = 4Ω; f = 1KHz;T
SymbolParameterTest ConditionMin. Typ.Max.Unit
POWER AMPLIFIER
= 25°C; unless otherwise specified).
amb
V
P
Supply Voltage Range818V
S
Total Quiescent Drain Current150300mA
I
d
Output PowerEIAJ (VS = 13.7V)3235W
O
THDTotal Harmonic Distortion
C
R
G
∆G
Cross Talk
T
Input Impedance80100130KΩ
IN
Voltage Gain 1252627dB
V1
Voltage Gain Match 1-11dB
V1
THD = 10%2225W
THD = 1%20W
= 2Ω; EIAJ (VS = 13.7V)5055W
R
L
R
= 2Ω;THD 10%
L
R
= 2Ω;THD 1%
L
3238W
30W
RL = 2Ω; MAX POWER60W
P
= 1W to 10W;
O
GV = 12dB; VO = 0.1 to 5V
RMS
f = 1KHz to 10KHz, RG = 600
Ω
5060dB
0.040.1%
0.020.05%
G
∆G
E
E
Voltage Gain 2111213dB
V2
Voltage Gain Match 2-11dB
V2
Output Noise Voltage 1Rg = 600Ω, 20Hz to 22kHz3580µV
IN1
Output Noise Voltage 2Rg = 600Ω; GV = 12dB
IN2
1220µV
20Hz to 22kHz
SVRSupply Voltage Rejectionf = 100Hz to 10kHz;
5060dB
Vr = 1Vpk; Rg = 600Ω
BWPower Bandwidth100KHz
A
I
A
V
V
T
T
Stand-by Attenuation90110dB
SB
Stand-by Current25100µA
SB
Mute Attenuation80100dB
M
Offset VoltageMute & Play-1000100mV
OS
Min. Supply Mute Threshold77.58V
AM
Turn on DelayD2/D1 (IB1) 0 to 12040ms
ON
Turn off DelayD2/D1 (IB1) 1 to 02040ms
OFF
4/19
TDA7561
ELECTRICAL CHARACTERISTCS
(Refer to the test circuit, VS = 14.4V; RL = 4Ω; f = 1KHz;T
(continued)
= 25°C; unless otherwise specified).
amb
SymbolParameterTest ConditionMin. Typ.Max.Unit
CD
CD
CD
Clip Det High Leakage CurrentCD off015µA
LK
Clip Det Sat. VoltageCD on; ICD = 1mA150300mV
SAT
Clip Det THD level12%
THD
TURN ON DIAGNOSTICS 1 (Power Amplifier Mode)
PgndShort to GND det. (below this
Power Amplifier in st-by condition1.2V
limit, the Output is considered in
Short Circuit to GND)
PvsShort to Vs det. (above this limit,
Vs -1.2V
the Output isconsidered in Short
Circuit to V
PnopNormal operation thresholds.
)
S
1.8Vs -1.8V
(Within these limits, the Output
is considered without faults).
LscShorted Load det.0.5Ω
LopOpen Load det.130Ω
LnopNormal Load det.1.570Ω
TURN ON DIAGNOSTICS 2 (Line Driver Mode)
PgndShort to GND det. (below this
Power Amplifier in st-by1.2V
limit, the Output is considered in
Short Circuit to GND)
PvsShort to Vs det. (above this limit,
Vs -1.2V
the Output isconsidered in Short
Circuit to V
PnopNormal operation thresholds.
)
S
1.8Vs -1.8V
(Within these limits, the Output is
considered witho ut faults).
LscShorted Load det.1.5&
LopOpen Load det.400&
LnopNormal Load det.4.5200&
PERMANENT DIAGNOSTICS 2 (Power Amplifier Mode or Line Driver Mode)
PgndShort to GND det. (below this
limit, the Output is considered in
Short Circuit to GND)
PvsShort to Vs det. (above this limit,
Power Amplifier in Mute or Play,
one or more short circuits
protection activated
1.2V
Vs -1.2V
the Output is considered in Short
Circuit to V
PnopNormal operation thresholds.
)
S
1.8Vs -1.8V
(Within these limits, the Output is
considered witho ut faults)
5/19
TDA7561
(V)
(V)
(V)
(W)
ELECTRICAL CHARACTERISTCS
(Refer to the test circuit, VS = 14.4V; RL = 4Ω; f = 1KHz;T
(continued)
= 25°C; unless otherwise specified).
amb
SymbolParameterTest ConditionMin. Typ.Max.Unit
L
Shorted Load det.Power Amplifier mode0.5Ω
SC
Line Driver mode1.5Ω
V
Offset DetectionPower Amplifier in play, AC Input
O
1.522.5V
signals = 0
2
I
C BUS INTERFACE
f
SCL
V
V
Figure 2. Quiescent Current vs. Supply Voltage
Id (mA)
250
230
210
190
170
150
130
110
90
70
50
8 1012141618
Clock Frequency400KHz
Input Low Voltage1.5V
IL
Input High Voltage2.3V
IH
Figure 4. Output Power vs. Supply Voltage (4Ω)
Po (W)
80
75
Vin = 0
NO LOADS
Vs
70
65
RL = 2 Ohm
60
f = 1 KHz
55
50
45
40
35
30
25
20
15
10
5
8910111213141516
Vs
Po-max
THD= 10 %
THD= 1 %
Figure 3. Output Power vs. Supply Voltage (2Ω)
Po (W)
70
65
60
55
50
45
40
35
30
25
20
15
10
5
89101112131415161718
RL = 4 Ohm
f = 1 KHz
Vs
6/19
Po-max
THD= 10 %
THD= 1 %
Figure 5. Disto rti on v s. Out p ut Po wer (2Ω)
THD (%)
10
Vs = 14.4 V
RL = 4 Ohm
1
f = 10 KHz
0.1
f = 1 KHz
0.01
0.1110
Po
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