ST TDA7375V User Manual

TDA7375V

2 x 35W dual/quad power amplifier for car radio

1 FEATURES

■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 VS SHORT

–SOFT SHORT AT TURN-ON

–THERMAL SHUTDOWN PROXIMITY

Figure 2. Block Diagram

Figure 1. Package

MULTIWATT15

Table 1. Order Codes

Part Number	Package
TDA7375V	MULTIWATT 15 (Vertical)

2 PROTECTIONS:

■OUPUT AC/DC SHORT CIRCUIT

–TO GND

–TO VS

–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

	Rev. 4
July 2008	1/15

TDA7375V

3 DESCRIPTION

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
Vop	Operating Supply Voltage	18	V
VS	DC Supply Voltage	28	V
Vpeak	Peak Supply Voltage (for t = 50ms)	50	V
IO	Output Peak Current (not repetitive t = 100μs)	4.5	A
IO	Output Peak Current (repetitive f > 10Hz)	3.5	A
Ptot	Power Dissipation (Tcase = 85°C)	36	W
Tstg, Tj	Storage and Junction Temperature	-40 to 150	°C

Table 3. Thermal Data

Symbol	Parameter		Value	Unit
Rth j-case	Thermal Resistance Junction-case	max	1.8	°C/W

Figure 3. Pin Connection (Top view)

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Table 4. Electrical Characteristcs (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
VS	Supply Voltage Range			8		18	V
Id	Total Quiescent Drain Current		RL = ∞			150	mA
VOS	Output Offset Voltage					150	mV
PO	Output Power		THD = 10%; RL = 4Ω	23	25		W
			Bridge
			Single Ended	6.5	7		W
			Single Ended, RL = 2Ω		12		W
PO max	Max. Output Power (***)		VS = 14.4V, Bridge	36	40		W
PO EIAJ	EIAJ Output Power (***)		VS = 13.7V, Bridge	32	35		W
THD	Distortion		RL = 4Ω		0.02		%
			Single Ended, PO = 0.1 to 4W
			Bridge, PO = 0.1 to 10W		0.03	0.3	%
CT	Cross Talk		f = 1KHz Single Ended		70		dB
			f = 10KHz Single Ended		60		dB
			f = 1KHz Bridge	55			dB
			f = 10KHz Bridge		60		dB
RIN	Input Impedance		Single Ended	20	30		KΩ
			Bridge	10	15		KΩ
GV	Voltage Gain		Single Ended	19	20	21	dB
			Bridge	25	26	27	dB
GV	Voltage Gain Match					0.5	dB
EIN	Input Noise Voltage		Rg = 0; ”A” weighted, S.E.		2		μV
			Non Inverting Channels
			Inverting Channels		5		μV
			Bridge				μV
			Rg = 0; 22Hz to 22KHz		3.5
SVR	Supply Voltage Rejection		Rg = 0; f = 300Hz	50			dB
ASB	Stand-by Attenuation		PO = 1W	80	90		dB
ISB	ST-BY Current Consumption		VST-BY = 0 to 1.5V			100	μA
VSB	ST-BY In Threshold Voltage					1.5	V
VSB	ST-BY Out Threshold Voltage			3.5			V
Ipin7	ST-BY Pin Current		Play Mode Vpin7 = 5V			50	μA
			Max Driving Curr. Under Fault (*)			5	mA
Icd off	Clipping Detector Output		d = 1% (**)		90		μA
	Average Current
Icd on	Clipping Detector Output		d = 5% (**)		160		μA
	Average Current
Vsat pin10	Voltage Saturation on pin 10		Sink Current at Pin 10 = 1mA			0.7	V

(*) See built-in S/C protection description

(**) Pin 10 Pulled-up to 5V with 10KΩ; RL = 4Ω (***) Saturated square wave output.

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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.

ST-BY	10K R1				VS
	C7		C6		C5
	10μF		100nF	1000μF
IN FL	4 7	13	3 1
	C1 0.22μF			C10 2200μF	OUT FL
IN FR	5		2
	C2 0.22μF
				C9 2200μF	OUT FR
IN RL	12
	C4 0.22μF		15
IN RR	11			C11 2200μF	OUT RL
	C3 0.22μF		14
	6
		9	10	C12 2200μF	OUT RR
	8
	C8 47μF		DIAGNOSTICS
				D94AU063A

Figure 5. Double Bridge

10K R1
ST-BY				VS
	C5		C4	C3
	10μF		100nF	1000μF
IN L	4 7	13	3 1
C1 0.47μF	5			OUT L
IN R	12		2
			15
C2 0.47μF	11
				OUT R
	6		14
C8 47μF	8	9	10
			DIAGNOSTICS	D94AU064A

Figure 6. Stereo/Bridge

10K
ST-BY	10μF			VS
			100nF	1000μF
IN L	4 7	13	3 1	OUT L
0.22μF
				2200μF
IN L	5		2	OUT R
0.22μF
				2200μF
IN BRIDGE	12		15
0.47μF	11			OUT
				BRIDGE
	6		14
		9
47μF	8		10
			DIAGNOSTICS
				D94AU065A

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Figure 7. P.C. Board and Component Layout of the fig.4

Figure 8. P.C. Board and Component Layout of the fig.5

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