tda7286 single chip preamplifier for double deck radio cassette recorder high open-loop gain (80db) very low input noise low turn on/off pop low supply current playback amplifier with head input switch recording amplifier with built-in alc alc time constant pin can be used as alc switch good supply ripple rejection description the tda7286 is a monolithic integrated circuit in dip20 and so20 packages designed for 6v, 9v and 12v ac/dc double deck cassette applica- tions. september 2003 ? block diagram dip20 so20 ordering numbers: tda7286 TDA7286D 1/6
absolute maximum ratings symbol parameter value unit v s supply voltage 14 v v in input dc voltage C0.4 to 0.5 v t op operating temperature C20 to 70 c t stg , t j storage & junction temperature C40 to 150 c thermal data symbol parameter dip20 so20 unit r th j-amb thermal resistance junction to ambient max. 100 200 c/w pin connection (top view) tda7286 2/6
electrical characteristics (v s = 6v, t amb = 25c; f = 1khz; r l = 4.7k w ; r g = 2.2k w , unless otherwise specified.) symbol parameter test condition min. typ. max. unit v s supply voltage 4 12 v i d quiescent current 7 15 ma playback amplifier g vo open loop gain 80 db v cd output dc voltage 1.2 1.5 1.7 v v o output ac voltage thd = 1% 700 950 mvrms svr supply voltage rejection f = 100hz 35 45 db c t cross talk 60 db e n total output noise r g = 0, bw = 22 to 22khz 300 m v r e internal feedback res 180 k w recording amplifier g vo open loop gain 80 db r i input resistance 30 50 70 k w v dc output dc voltage 2.0 2.4 2.8 v v o output ac voltage thd = 1% alc = off alc = on 1 0.75 1.4 1 1.25 vrms vrms thd total harmonic distortion v o = 0.5vrms; alc = off 0.2 0.5 % alc range d v o = 3db 48 db cb channel balance alc = on 0 2 db svr supply voltage rejection f = 100hz 28 32 db c t cross talk f = 1khz 60 db head select input input low level chb selected 0.6 v input high level cha seleced 1.4 v tda7286 3/6
dip20 dim. mm inch min. typ. max. min. typ. max. a1 0.254 0.010 b 1.39 1.65 0.055 0.065 b 0.45 0.018 b1 0.25 0.010 d 25.4 1.000 e 8.5 0.335 e 2.54 0.100 e3 22.86 0.900 f 7.1 0.280 i 3.93 0.155 l 3.3 0.130 z 1.34 0.053 outline and mechanical data tda7286 4/6
11 0 11 20 a e b d e l k h a1 c so20mec h x 45? so20 dim. mm inch min. typ. max. min. typ. max. a 2.35 2.65 0.093 0.104 a1 0.1 0.3 0.004 0.012 b 0.33 0.51 0.013 0.020 c 0.23 0.32 0.009 0.013 d 12.6 13 0.496 0.512 e 7.4 7.6 0.291 0.299 e 1.27 0.050 h 10 10.65 0.394 0.419 h 0.25 0.75 0.010 0.030 l 0.4 1.27 0.016 0.050 k 0? (min.)8? (max.) outline and mechanical data tda7286 5/6
information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsib ility for the cons equences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this p ublication are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectron ics products are not authorized for use as critical components in life support devices or systems without express written approval of stmicr oelectronics. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners ? 2003 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia C belgium - brazil - canada - china C czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - united states www.st.com tda7286 6/6
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