ST TDA7375V User Manual
TDA7375V
Fi
2 x 35W dual/quad power amplifier for car radio
1FEATURES
■ HIGH OUTPUT POWER CAPABILITY:
– 2 x 40W max./4Ω
–2 x 35W/4Ω EIAJ
–2 x 35W/4Ω EIAJ
–2 x 25W/4Ω @14.4V, 1KHz, 10%
–4 x 7W/4Ω @14.4V,1KHz, 10%
–4 x 12W/2Ω @14.4V, 1KHz, 10%
■ MINIMUM EXTERNAL COMPONENTS
COUNT:
– NO BOOTSTRAP CAPACITORS
– NO BOUCHEROT CELLS
– INTERNALLY FIXED GAIN (26dB BTL)
■ ST-BY FUNCTION (CMOS COMPATIBLE)
■ NO AUDIBLE POP DURING ST-BY
OPERATIONS
■ DIAGNOSTICS FACILITY FOR:
– CLIPPING
– OUT TO GND SHORT
–OUT TO V
– SOFT SHORT AT TURN-ON
– THERMAL SHUTDOWN PROXIMITY
SHORT
S
gure 1. Package
MULTIWATT15
Table 1. Order Codes
Part Number Package
TDA7375V MULTIWATT 15 (Vertical)
2 PROTECTIONS:
■ OUPUT AC/DC SHORT CIRCUIT
– TO GND
–TO V
– ACROSS THE LOAD
■ SOFT SHORT AT TURN-ON
■ OVERRATING CHIP TEMPERATURE WITH
■ SOFT THERMAL LIMITER
■ LOAD DUMP VOLTAGESURGE
■ VERY INDUCTIVE LOADS
■ FORTUITOUS OPEN GND
■ REVERSED BATTERY
■ ESD
S
Figure 2. Block Diagram
July 2008
Rev. 4
1/15
TDA7375V
3DESCRIPTION
The TDA7375V is a new technology class AB car radio amplifier able to work either in DUAL BRIDGE or
QUAD SINGLE ENDED configuration.
The exclusive fully complementary structure of the output stage and the internally fixed gain guarantees
the highest possible power performances with extremely reduced component count.
The on-board clip detector simplifies gain compression operation. The fault diagnostics makes it possible
to detect mistakes during car radio set assembly and wiring in the car.
Table 2. Absolute Maximum Ratings
Symbol Parameter Value Unit
V
op
V
S
V
peak
I
O
I
O
P
tot
T
, T
stg
Operating Supply Voltage 18 V
DC Supply Voltage 28 V
Peak Supply Voltage (for t = 50ms) 50 V
Output Peak Current (not repetitive t = 100μs) 4.5 A
Output Peak Current (repetitive f > 10Hz) 3.5 A
Power Dissipation (T
Storage and Junction Temperature -40 to 150 °C
j
= 85°C) 36 W
case
Table 3. Thermal Data
Symbol Parameter Value Unit
R
th j-case
Thermal Resistance Junction-case max 1.8 °C/W
Figure 3. Pin Connection (Top view)
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TDA7375V
Table 4. Electrical Characteristcs (Refer to the test circuit, VS = 14.4V; RL = 4Ω; f = 1KHz; T
amb
unless otherwise specified)
Symbol Parameter Test Condition Min. Typ. Max. Unit
V
S
I
d
V
OS
P
O
max Max. Output Power (***) VS = 14.4V, Bridge 36 40 W
P
O
P
O EIAJ
THD Distortion R
CT Cross Talk f = 1KHz Single Ended 70 dB
R
IN
G
V
G
V
E
IN
SVR Supply Voltage Rejection
A
SB
I
SB
V
SB
V
SB
I
pin7
I
cd off
Icd on
V
sat pin10
(*) See built-in S/C protection de scription
(**) Pin 10 Pulled-up to 5V with 10KΩ; R
(***) Saturated square wave output.
Supply Voltage Range 8 18 V
Total Quiescent Drain Current
R
= ∞
L
150 mA
Output Offset Voltage 150 mV
Output Power THD = 10%; RL = 4Ω
Bridge
Single Ended
Single Ended, R
= 2Ω
L
23
6.5
25
7
12
EIAJ Output Power (***) VS = 13.7V, Bridge 32 35 W
= 4Ω
L
Single Ended, PO = 0.1 to 4W
Bridge, PO = 0.1 to 10W
0.02
0.03 0.3
f = 10KHz Single Ended 60 dB
f = 1KHz Bridge 55 dB
f = 10KHz Bridge 60 dB
Input Impedance Single Ended 20 30 KΩ
Bridge 10 15 KΩ
Voltage Gain Single Ended 19 20 21 dB
Bridge 25 26 27 dB
Voltage Gain Match 0.5 dB
Input Noise Voltage Rg = 0; ”A” weighted, S.E.
Non Inverting Channels
Inverting Channels
2
5
Bridge
Rg = 0; 22Hz to 22KHz 3.5 μV
= 0; f = 300Hz
R
g
50 dB
Stand-by Attenuation PO = 1W 80 90 dB
ST-BY Current Consumption V
= 0 to 1.5V 100 μA
ST-BY
ST-BY In Threshold Voltage 1.5 V
ST-BY Out Threshold Voltage 3.5 V
ST-BY Pin Current Play Mode V
= 5V 50 μA
pin7
Max Driving Curr. Under Fault (*) 5 mA
Clipping Detector Output
d = 1% (**) 90 μA
Average Current
Clipping Detector Output
d = 5% (**) 160 μA
Average Current
Voltage Saturation on pin 10 Sink Current at Pin 10 = 1mA 0.7 V
= 4Ω
L
= 25°C,
W
W
W
%
%
μV
μV
3/15
TDA7375V
4 STANDARD TEST AND APPLICATION CIRCUIT
Figure 4. Quad Stereo
Note:
C9, C10, C11, C12 could be reduced
if the 2W operation is not required.
Figure 5. Double Bridge
ST-BY
IN L
IN R
10K R1
C1 0.47μF
C2 0.47μF
C8 47μF
ST-BY
10K R1
C7
10μF
IN FL
C1 0.22μF
IN FR 5
C2 0.22μF
IN RL
C4 0.22μF
IN RR 11
C3 0.22μF
C8 47μF
C5
10μF
13
7
4
5
12
11
6
89
13
7
4
12
6
89
C4
100nF
3
1
2
15
14
10
DIAGNOSTICS
C6
100nF
3
1
2
15
14
10
DIAGNOSTICS
OUT L
OUT R
D94AU064A
C10 2200μF
C9 2200μF
C11 2200μF
C12 2200μF
D94AU063A
V
S
C3
1000μF
V
C5
1000μF
S
OUT FL
OUT FR
OUT RL
OUT RR
Figure 6. Stereo/Bridge
IN BRIDGE 12
4/15
ST-BY
IN L
IN L
10K
0.22μF
0.22μF
0.47μF
47μF
10μF
7
4
5
11
6
89
3
13
DIAGNOSTICS
10
15
14
V
S
1000μF100nF
1
2200μF
2
2200μF
OUT L
OUT R
OUT
BRIDGE
D94AU065A
Figure 7. P.C. Board and Component Layout of the fig.4
TDA7375V
Figure 8. P.C. Board and Component Layout of the fig.5
5/15
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