Tda2040

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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 circuitprotection system comprising an arrangement for automatically limiting 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. TEST CIRCUIT

PENTAWATT ORDERING NUMBER : TDA2040V

December 1995

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TDA2040
SCHEMATIC DIAGRAM

PIN CONNECTION

THERMAL DATA
Symbol Rth j-case ParameterThermal Resistance Junction-case Max. Value 3 Unit °C/W

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

ELECTRICAL CHARACTERISTICS (refer tothe test circuit, VS = ± 16V, Tamb = 25oC unless otherwise specified)
Symbol Vs Id Ib Vos Ios Po Supply Voltage Quiescent Drain Current Input Bias Current Input Offset Voltage Input Offset Current Output Power Vs = ± 4.5V Vs = ± 20V Vs = ± 20V Vs = ± 20V d = 0.5%, Tcase = 60°C f = 1kHz RL = 4Ω RL = 8Ω f = 15kHz RL = 4Ω Po = 1W, RL = 4Ω f = 1kHz f = 1kHz Po = 0.1 to 10W, RL = 4Ω f = 40 to 15000Hzf = 1kHz B = Curve A B = 22Hz to 22kHz B = Curve A B = 22Hz to 22kHz RL = 4Ω, Rg = 22kΩ, Gv = 30dB f = 100Hz, Vripple = 0.5VRMS f = 1kHz RL = 8 Ω Po = 12W RL = 4 Ω Po = 22W 0.5 40 Parameter Test Conditions Min. ± 2.5 45 0.3 ±2 Typ. Max. ± 20 30 100 1 ± 20 ± 200 Unit V mA mA µA mV nA W 20 15 22 12 18 100 80 30 0.08 0.03 2 3 50 80 5 50 10 200 MΩ dB % 66 63 145 °C µV µV pA 30.5

BW Gv Gv dPower Bandwidth Open Loop Voltage Gain Closed Loop Voltage Gain Total Harmonic Distortion

kHz dB dB %

29.5

eN iN Ri SVR η

Input Noise Voltage Input Noise Current Input Resistance (pin 1) Supply Voltage Rejection Efficiency

Tj

Thermal Shut-down Junction Temperature

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TDA2040
Figure 1 : Output Power versus Supply Voltage Figure 2 : Output Power versus Supply VoltageFigure 3 :

Output Power versus Supply Voltage

Figure 4 :

Distortion versus Frequency

Figure 5 :

Supply Voltage Rejection versus Frequency

Figure 6 :

Supply Voltage Rejection versus Voltage Gain

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TDA2040
Figure 7 : Quiescent Drain Current versus Supply Voltage Figure 8 : Open Loop Gain versus Frequency

Figure 9 :

Power Dissipation versus Output Power

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Figure 10 : Amplifier with Split Power Supply

Figure 11 : P.C. Board and Components Layout for the Circuit of Figure 10 (1:1 scale)

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TDA2040
Figure 12 : Amplifier with Split Power Supply (see Note)

Note : In this case of highly inductive loads protection diodes may be necessary.

Figure 13 : P.C. Board and Components Layout for the Circuit of Figure 12 (1:1 scale)7/13

TDA2040
Figure 14 : 30W Bridge Amplifier with Split Power Supply

Figure 15 : P.C. Board and Components Layout for the Circuit of Figure 14 (1:1 scale)

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Figure 16 : Two Way Hi-Fi System with Active Crossover

Figure 17 : P.C. Board and Components Layout for the Circuit of Figure 16 (1:1 scale)

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Figure 18 : Frequency Response Figure 19 : PowerDistribution versus Frequency

MULTIWAY SPEAKER SYSTEMS AND ACTIVE BOXES Multiway loudspeaker systems provide the best possible acoustic performance since each loudspeaker is specially designed and optimized to handle a limited range of frequencies. Commonly, these loudspeaker systems divide the audio spectrum into two, three or four bands. To maintain a flat frequency response over the Hi-Fi...
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