Ordering number : EN4479A Thick Film Hybrid IC STK4042 II AF Power Amplifier (Split Power Supply) (80 W min, THD = 0.4%) Features Package Dimensions • Miniature package allows audio sets to be made slimmer. • Pin-compatible amplifiers with outputs of 20 to 200 W are available. • Facilitates thermal design of slim stereo sets by distributing the heat dissipating ICs in the set. • The adoption of constant current circuits reduces pop noise when the power supply is turned on or off. • Supports the design of supplementary electronic circuits (thermal shutdown, load short protection, and pop noise muting at power on and off). unit: mm 4075 [STK4042II] Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Symbol Condition Rating Unit VCC max ±65 V θj-c 1.2 °C/W Junction temperature Tj 150 °C Operating case temperature Tc 125 °C –30 to +125 °C Thermal resistance Storage temperature Tstg Available time for load shorted tS* VCC = ±45 V, RL = 8 Ω, f = 50 Hz, PO = 80 W 2 s Note: Use a constant voltage power supply as the test power supply unless otherwise specified. * Use the transformer power supply shown on the next page when measuring the available time for load shorted and the output noise voltage. Recommended Operating Conditions at Ta = 25°C Parameter Recommended supply voltage Load resistance Symbol Condition Rating VCC RL Unit ±45 V 8 Ω Operating Characteristics at Ta = 25°C, VCC = ±45 V, RL = 8 Ω (noninductive load), Rg = 600 Ω, VG = 40 dB Parameter Quiescent current Output power ICCO PO Total harmonic distortion Frequency response Input resistance Condition 15 THD = 0.4%, f = 20 Hz to 20 kHz 80 PO = 1.0 W, f = 1 kHz fL, fH +0 PO = 1.0 W, –3 dB VNO** VN Rating min VCC = ±54 V THD ri Output noise voltage Neutral voltage Symbol typ 120 mA W 0.3 % 20 to 50 k PO = 1.0 W, f = 1 kHz Hz 55 VCC = ±54 V, Rg = 10 kΩ VCC = ±54 V Unit max –70 0 kΩ 1.2 mVrms +70 mV Note: Use a constant voltage power supply as the test power supply unless otherwise specified. ** The output noise voltage is the peak value measured with an averaging rms scale volt meter. The noise voltage waveform should not include pulse noise. SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN N3096HA (OT)/82793YO 5-2300 No. 4479-1/3 STK4042 II Specified Transformer Power Supply (MG-200 equivalent) Equivalent Circuit Sample Application Circuit: 80 W (minimum) AF Power Amplifier No. 4479-2/3 STK4042 II ■ No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. ■ Anyone purchasing any products described or contained herein for an above-mentioned use shall: ➀ Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: ➁ Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. ■ Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of November, 1996. Specifications and information herein are subject to change without notice. No. 4479-3/3