STK-1050 50 W MIN. AF POWER AMPLIFIER OUTPUT STAGE (DPP) INTEGRATED EMITTER RESISTOR THICK FILM HYBRID INTEGRATED CIRCUIT FEATURES * Does not require externally connected emitter resistors. * Values of emitter resistors have carefully been reviewed to provide superior characteristics. a. Better supply voltage utilization permits designing power supply voltages that are +0.7 V (for RL = 42) lower than those required for previous DPP models. b. Maximum allowable power consumption for each resistor is 5 W or higher, permitting accommodation for all loads. c. Peak allowable current is 18 A or more, providing an ample margin even for peak currents under when short circuited or similar emergencies. d. In particular, maximum outputs 4Q have been enormously improved. * Use of emitter resistors facilitates meeting deferent safety standards and designing PCBs. * Mutual interferences in the high-frequency range caused by layout of externally connected emitter resistors no longer exist. This facilitates lower distortion factors. - Pins are used for emitter resistor output terminals that were not connected in previous DPPs. All other terminals remain unchanged ; there is no need for major circuit board changes. MAXIMUM RATINGS/Tag = 25C unit Maximum power supply voltage Vcc max +53 V Thermal resistance 9j-c Ideal dissipating condition 1.8 C/W Collector current Ic 7 A Junction temperature Tj 150 C Storage ambient temperature Tstg 30 ~ +105 C Short-circuit load allowable time ts Vec = 36 V*, f = 50 Hz, 2 sec Re = 8Q, Pp = 50 W Employ specified transformer power supply RECOMMENDED OPERATING CONDITIONS/T, = 25C unit Recommended power supply Vcc +36 Vv voltage Load resistance Ri 8 Q 6 9 eres, BQ Qe em 9.3 Equivalent circtit Case Outline re oT 0 WH He $0 . 2 (unit: mm) 1 02 | | a 2Po RI as ? f23 to ra Wh-O% mi | ay 03 | R2 Re + ~ TRS 06 3.0 er TR 4 : 1 5 2 MAnen annnrifinatinnege ann anhinnt tn rnhangan withawst nntinn STK-1050 OPERATING CHARACTERISTICS/T, = 25, Vcc = 136 V, RL = 82, Rg = 60022, VG = 26.3 dB, at specified test circuit (conforming with sample application circuit) min typ max unit No signal current Icco Vcc = +43V 20 40 80 mA 50 Ww min typ max unit Output power Po (1) THD = 0.02%, f = 20 Hz ~ 20 kHz 50 W Py (2) Vec= +31 V, THD = 0.03%, 55 Ww f=1kHz, RL =4Q Total harmonic distortion THD Pg=1~50W, f= 20 Hz ~ 20 kHz 0.02 % 0.18 0.22 0.30 Q Emitter resistor Re *To test for short-circuit allowable time, use a transformer power supply specified in diagram at the right. 10000u -Vec = Specified transformer power supply (Sansui RP-35 or equivalent) (Tango MG-200 or equivalent) = SAMPLE APPLICATION CIRCUIT: 50 W min. AF Power Amplifier 100(1W) Mh +oco + z 100 10u Te 3k ; | k 180p 22k 0 ~ 9 3.3u ~!~8) 7 (OOO) isk = STK-1050 > q 7 A 47 vw Rul go 40 ] \(Non-inductive) vr