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TDA8547 датащи(PDF) 5 Page - NXP Semiconductors |
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TDA8547 датащи(HTML) 5 Page - NXP Semiconductors |
5 / 24 page 1997 Oct 07 5 Philips Semiconductors Preliminary specification 2 × 1 W BTL audio amplifier with output channel switching TDA8547 operate and the power amplifier of channel 2 will be in the standby mode. In this case only the loudspeaker at channel 1 can operate and the loudspeaker at channel 2 will be switched off. Setting the SELECT pin to a LOW or a HIGH voltage results in a reduction of quiescent current consumption by a factor of approximately 2. Switching with the SELECT pin during operating is not plop-free, because the input capacitor of the channel which is coming out of standby needs to be charged first. For plop-free channel selecting the device has first to be set in mute condition with the MODE pin (between 1.5 V and VCC − 1.5 V), then set the SELECT pin to the new level, after a delay set the MODE pin to a LOW level. The delay needed depends on the values of the input capacitor and the feedback resistors. Time needed is approx. 10 × C1 × (R1 + R2), so approximately 0.6 s. for the values in Fig.4. Table 1 Control pins MODE and SELECT versus status of output channels Voltage levels at control pins at VP = 5 V; for other supply voltages see Figs. 14 and 15. Notes 1. HIGH = Vpin >VCC − 0.5 V. 2. NC = not connected or floating. 3. X = don’t care. 4. HVP = 1.5 V < Vpin <VCC − 1.5 V. 5. LOW = Vpin < 0.5 V. LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). QUALITY SPECIFICATION In accordance with “SNW-FQ-611-E”. The number of the quality specification can be found in the “Quality Reference Handbook”. The handbook can be ordered using the code 9397 750 00192. CONTROL PIN STATUS OF OUTPUT CHANNEL TYP. Iq (mA) MODE SELECT CHANNEL 1 CHANNEL 2 HIGH(1)/NC(2) X(3) standby standby 0 HVP(4) HVP(4)/NC(2) mute mute 15 LOW(5) HVP(4)/NC(2) on on 15 HVP(4)/LOW(5) HIGH(1) mute/on standby 8 HVP(4)/LOW(5) HVP(4)/NC(2) mute/on mute/on 15 HVP(4)/LOW(5) LOW(5) standby mute/on 8 SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT VCC supply voltage operating −0.3 +18 V VI input voltage −0.3 VCC + 0.3 V IORM repetitive peak output current − 1A Tstg storage temperature −55 +150 °C Tamb operating ambient temperature −40 +85 °C VPsc AC and DC short-circuit safe voltage − 10 V Ptot total power dissipation SO16 − 1.2 W DIP16 − 2.2 W |
Аналогичный номер детали - TDA8547 |
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Аналогичное описание - TDA8547 |
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