Thomson TDA2040 Manual

TDA2040

20W Hi-Fi AUDIO POWER AMPLIFIER

DESCRIPTION

The TDA2040 is a monolithic integrated circuit in Pentawatt package,intended for use as an audio class AB amplifier. Typically it provides 22W output power (d = 0.5%) at Vs = 32V/4Ω . The TDA2040 provides high output current and has very low harmonic and cross-over distortion. Further the device incorporates a patented short circuit protection system comprising an arrangement for automaticallylimiting the dissipated power so as to keep the working point of the output transistors within their safe operating area. A thermal shut-down system is also included.

PENTAWATT

ORDERING NUMBER : TDA2040V

TEST CIRCUIT

December 1995

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TDA2040

SCHEMATIC DIAGRAM

PIN CONNECTION

THERMAL DATA

Symbol	Parameter		Value	Unit
Rth j-case	Thermal Resistance Junction-case	Max.	3	°C/W

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			TDA2040
ABSOLUTE MAXIMUM RATINGS
Symbol	Parameter	Value	Unit
Vs	Supply Voltage	± 20	V
Vi	Input Voltage	Vs
Vi	Differential Input Voltage	± 15	V
Io	Output Peak Current (internally limited)	4	A
Ptot	Power Dissipation at Tcase = 75 °C	25	W
Tstg, Tj	Storage and Junction Temperature	± 40 to + 150	°C

ELECTRICAL CHARACTERISTICS

(refer to the test circuit, VS = ± 16V, Tamb = 25oC unless otherwise specified)

Symbol	Parameter	Test Conditions		Min.	Typ.	Max.	Unit
Vs	Supply Voltage			± 2.5		± 20	V
Id	Quiescent Drain Current	Vs = ± 4.5V				30	mA
		Vs = ± 20V			45	100	mA
Ib	Input Bias Current	Vs = ± 20V			0.3	1	μA
Vos	Input Offset Voltage	Vs = ± 20V			± 2	± 20	mV
Ios	Input Offset Current					± 200	nA
Po	Output Power	d = 0.5%, Tcase = 60°C					W
		f = 1kHz	RL = 4Ω	20	22
			RL = 8Ω		12
		f = 15kHz	RL = 4Ω	15	18
BW	Power Bandwidth	Po = 1W, RL = 4Ω			100		kHz
Gv	Open Loop Voltage Gain	f = 1kHz			80		dB
Gv	Closed Loop Voltage Gain	f = 1kHz		29.5	30	30.5	dB
d	Total Harmonic Distortion	Po = 0.1 to 10W, RL = 4Ω			0.08		%
		f = 40 to 15000Hz
		f = 1kHz			0.03
eN	Input Noise Voltage	B = Curve A			2		μV
		B = 22Hz to 22kHz			3	10	μV
iN	Input Noise Current	B = Curve A			50		pA
		B = 22Hz to 22kHz			80	200
Ri	Input Resistance (pin 1)			0.5	5		MΩ
SVR	Supply Voltage Rejection	RL = 4Ω, Rg = 22kΩ, Gv = 30dB		40	50		dB
		f = 100Hz, Vripple = 0.5VRMS
η	Efficiency	f = 1kHz	RL = 8 Ω		66		%
		Po = 12W
		Po = 22W	RL = 4 Ω		63
Tj	Thermal Shut-down Junction Temperature				145		°C

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TDA2040

Figure 1 : Output Power versus Supply Voltage

Figure 2 : Output Power versus Supply Voltage

Figure 3 : Output Power versus Supply Voltage

Figure 4 : Distortion versus Frequency

Figure 5 : Supply Voltage Rejection versus	Figure 6 : Supply Voltage Rejection versus
Frequency	Voltage Gain

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