1. General descriptionThe TFA9842AJ contains two identical audio power amplifiers. The TFA9842AJ can beused as two Single-Ended (SE) channels with a volume control. The maximum gain is26 dB.The TFA9842AJ comes in a 9-pin DIL-bent-SIL (DBS9P) power package. The TFA9842AJis pin compatible with the TFA9843AJ, TFA9843(B)J, TFA9842(B)J and TFA9841J. Thedifference between the TFA9843AJ and the TFA9843(B)J, TFA9842(B)J, TFA9841J is thefunctionality of pin 7. The TFA9843AJ has a Volume Control (VC) on pin 7. TheTFA9843(B)J, TFA9842(B)J and TFA9841J have a mode select (MODE) on pin 7.The TFA9842AJ contains a unique protection circuit that is solely based on multipletemperature measurements inside the chip. This gives maximum output power for allsupply voltages and load conditions with no unnecessary audio holes. Almost any supplyvoltage and load impedance combination can be made as long as thermal boundaryconditions (number of channels used, external heatsink and ambient temperature) allowit.2. Featuresn 2 channel SE: 1 W to 7.5 W operation possibilityn Soft clippingn Input clampsn Volume controln Standby and Mute moden No on or off switching plopsn Low standby currentn High supply voltage ripple rejectionn Outputs short-circuit protected to ground, supply and across the loadn Thermally protectedn Pin compatible with the TFA9843AJ, TFA9843(B)J, TFA9842(B)J and TFA9841J