STK4028II

Ordering number : EN4548A Thick Film Hybrid IC STK4028 II AF Power Amplifier (Split Power Supply) (30 W min, THD = 0.4 %) Features Compact packaging supports slimmer set designs Series designed for 20 up to 200 W and pin- compatibility Simpler heat sink design facilitates thermal design of slim stereo sets The pulse noises associated with turning the power on and off have been reduced by the adoption of fixed current circuits Supports addition of electronic circuits for thermal shutdown and load-short protection circuit as well as pop noise muting which occurs when the power supply switch is turned on and off Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Thermal resistance Junction temperature Operating substrate temperature Storage temperature Available time for load shorted Symbol VCC max θj-c Tj Tc Tstg tS*1 Conditions VCC = ±27.5 V, RL = 8 Ω, f = 50 Hz, PO = 30 W Ratings ±42 2.1 150 125 –30 to +125 2 Unit V °C/W °C °C °C s Recommended Operating Conditions at Ta = 25°C Parameter Recommended supply voltage Load resistance Symbol VCC RL Conditions Ratings ±27.5 8 Unit V Ω Operating Characteristics at Ta = 25°C, VCC = ±27.5 V, RL = 8 Ω, VG = 40 dB, Rg = 600 Ω, 100 kHz LPF on, RL (noninductive) Parameter Symbol Conditions Ratings min typ max Unit Quiescent current Output power Total harmonic distortion Frequency response Input resistance Output noise voltage Neutral voltage ICCO PO (1) PO (2) THD fL, fH ri VNO *2...