fLA4505 _ monolithic finear ICC No,2 eS CiIROUIT DRAW ING @-CHANNEL AF POWER AMPLIFIER FOR | RADIO CASSETTE(l1 SV) Features [LA4507 Small idting current (20mMA/2 channels) enabling prolonged battery life. Small dependence of idling current on VCC. High power (8.5W typ. x 2). High ripple rejection (6G0dB at steady state). Since filters are arranged in 3 stages (including 1 stage inside IC) to attain satisfactory ripple rejection at transient state, ripple occurring at the time of motor start can be prevented from mixing tn. Small pop noise at the time of power supply ON/OFF and good starting balance between both channels (0.6 sec.) due to built-in pop noise limiter. Pins provided for compensating high frequency monolithic linear [C- response. Small residual noise (0.4m\V). Wide supply voltage range (6 to 24V) easing design of transformer power supply. Built-in thermal shutdown circuit. Designed so that inverse insertion or short between adjacent pins causes no destruction. Channel-to-channe}! mirror image pin assignment and provision of Pre GND, Power GND pins enabling stable operation and easing artwork of printed circuit board. Minimum number of external parts required (9 pcs. min., 12 pes. typ.). : Audio muting capability (for automatic music selection, electronic tuner). i No.2 2 CIRCUIT DRAWING DMUAL-CHANNEL AF POVER AMP. | Applications = Dual-channel AF Power amp. for sound mult!- m Dual-channel AF power amp. for radio cassette plex TV Features = Small idling current (2OmA/duali channels) m@ High power Sample Application smal! at the time of power supply ON/OFF and starting balance between both channels ts good. 4.5W x 2: 16V/80hm Circu @ Built-in thermal protector 8 OW x 2: 16V/4ohm ircult 1 = Minimum number of external parts required 8.5W x 2: 15V/30hm Circuit 2 a Audio muting capability Z m High ripple rejection (at 60dB steady state) m With pop noise preventer built in, pop noise is Easy to make heat radiation design because of SEP 14H (@jc = 3C/W) |LA4508 | ee _ | 7 . , CIRCUIT DRAW ING monolithic linear IC | NIo.2OB4 | 2-CHANNEL AF POWER AMP RADIO CASSETTE APPLICATIONS Features = Thermal protector m= Easy to design heat radiation due to adoption of SEP14H (8j- = 3C/W) Low idling current (20mA/2 channels) = Output power 8.5W x 2 typ (RL = 3ohm) = High ripple rejection (60dB at steady state} m= Smal! pop noise at the time of power supply ON ae ie