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TDA8541T Arkusz danych(PDF) 6 Page - NXP Semiconductors |
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TDA8541T Arkusz danych(HTML) 6 Page - NXP Semiconductors |
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6 / 20 page  1998 Apr 01 6 Philips Semiconductors Product specification 1 W BTL audio amplifier TDA8541 TEST AND APPLICATION INFORMATION Test conditions Because the application can be either Bridge-Tied Load (BTL) or Single-Ended (SE), the curves of each application are shown separately. The thermal resistance = 100 K/W for the DIP8 envelope; the maximum sine wave power dissipation for Tamb =25 °C is: . For Tamb =60 °C the maximum total power dissipation is: . BTL application Tamb =25 °C if not specially mentioned, VCC =5V, f = 1 kHz, RL =8 Ω, Gv = 20 dB, audio band-pass 22 Hz to 22 kHz. The BTL application diagram is shown in Fig.3. The quiescent current has been measured without any load impedance. The total harmonic distortion as a function of frequency was measured with a low-pass filter of 80 kHz. The value of capacitor C2 influences the behaviour of the SVRR at low frequencies, increasing the value of C2 increases the performance of the SVRR. The figure of the mode select voltage (Vms) as a function of the supply voltage shows three areas; operating, mute and standby. It shows, that the DC-switching levels of the mute and standby respectively depends on the supply voltage level. 150 25 – 100 ---------------------- 1.25 W = 150 60 – 100 ---------------------- 0.9 W = SE application Tamb =25 °C if not specially mentioned, VCC = 7.5 V, f = 1 kHz, RL =4 Ω, Gv = 20 dB, audio band-pass 22 Hz to 22 kHz. The SE application diagram is shown in Fig.13. The capacitor value of C3 in combination with the load impedance determines the low frequency behaviour. The total harmonic distortion as a function of frequency was measured with low-pass filter of 80 kHz. The value of capacitor C2 influences the behaviour of the SVRR at low frequencies, increasing the value of C2 increases the performance of the SVRR. General remark The frequency characteristic can be adapted by connecting a small capacitor across the feedback resistor. To improve the immunity of HF radiation in radio circuit applications, a small capacitor can be connected in parallel with the feedback resistor (56 k Ω); this creates a low-pass filter. |
Podobny numer części - TDA8541T |
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