TDA7494 Datasheet | STMicroelectronics

DESCRIPTION The TDA7494 10W is class AB power amplifier assembled in the @Multiwatt 15 package, specially designed for high quality sound, TV applications. Features of the TDA7494 include volume control, 3 switchable inputs, Stand-by and mute functions. BLOCK AND APPLICATION DIAGRAM 3x 470n F IN 1 IN 2 IN 3 SW 5 6 1 2 3 VOL PWR 13 14 +VCC 470µF MUTE/STBY PROTECTIONS PWR GND 2K SGN GND 8 2 4 3 SVR 7 9 STAND-BY 470µF 10K 1µF 10 100K D95AU414D MONITOR OUT 100K 300n F VOL CTL 300n F SW CTL MUTE February 1997 1/12 ABSOLUTE MAXIMUM RATINGS Symbol VS VIN Ptot Tamb Tstg, Tj V2, V3 DC Supply Voltage Maximum Input Voltage Total Power Dissipation (Tamb = 70°C) Ambient Operating Temperature Range (1) Storage and Junction Temperature Volume CTRL DC voltage Parameter Value 35 8 16 -20 to +85 -40 to 150 7 Unit V Vpp W °C °C V (1) Operation between -20 to 85 °C guaranteed by correlation with 0 to 70°C. PIN CONNECTION 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 D95AU415A PWR GND OUT +VCC N.C. N.C. MUTE STAND-BY SGN GND SVR IN 2 IN 1 MONITOR OUT VOLUME CONTROL SW CTL IN 3 THERMAL DATA Symbol Rth j-case Rth j-amb Parameter Thermal Resistance Junction-case Thermal Resistance Junction-ambient max Value Typ = 3.8 35 Max = 4.8 Unit °C/W °C/W ELECTRICAL CHARACTERISTICS (Refer to the test circuit, VS = 21V, RL = 8Ω; Rg = 50Ω; Tamb = 25°C; unless otherwise specified.) Symbol VS Iq DCVOS VO PO Parameter Supply Voltage Range Total Quiescent Current Output DC Offset Referred to SVR Potential Quiescent Output Voltage Output Power No Input Signal VS = 28V THD = 10%; VCC = 28V, RL = 8Ω THD = 1%; VCC = 28V THD = 10%; VCC = 21V, THD = 1%; VCC = 21V, THD = 10%; VCC = 21V, RL = 4Ω THD = 1%; VCC = 21V, THD = 10%; VCC = 18V, THD = 1%; VCC = 18V THD = 10%; VCC = 18V, RL = 8Ω THD = 1%; VCC = 18V 2/12 8 6 5 3.5 5 3.9 4.5 3.5 3.5 2.5 -400 14 10 8 5.5 4 7.5 5.5 6 4.5 3.75 2.85 Test Condition Min. 11 22 Typ. Max. 35 50 400 Unit V m A m V V W W W W W W ELECTRICAL...