NTE2000 integrated circuit dolby b type noise reduction system absolute maximum ratings : (t a = +25 c unless otherwise specified) supply voltage, v cc 16v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . total power dissipation, p t 600mw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . operating temperature range, t opr ? 20 to +70 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . storage temperature range, t stg ? 55 to +125 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . electrical characteristics : (v cc = 12v, f = 20hz to 20khz, t a = +25 c, unless otherwise specified) parameter symbol test conditions min typ max unit operating voltage v opr 10 ? 15 v supply current i cc ? 20 30 ma voltage gain g v f = 1khz (2 5, 15 12) 18.5 20 21.5 db g v ( , ) (5 8, 12 9) ? 0 ? db total harmonic distortion thd f = 1khz 0db 8, 9 ? 0.08 0.3 % output voltage v o(max) f = 1khz, thd 1.0%, r l = 1k ? 8, 9 2.5 3.1 ? v rms signal ? to ? noise ratio s/n r g = 3.3k ? encode 73 80 0 db s/n g 2, 15 decode ? 90 ? db back to back frquency re- sponse bb f = 20hz to 20khz ? 1.5 0 +1.5 db crosstalk ct f = 1khz ? 63 ? db rrr f = 100/120hz ? 40 ? db output resistance r out ? 10 ? ? ? 10 ? ? ? 2.7 ? k ?
1.007 (25.5) max .964 (24.4) .291 (7.4) max .248 (6.3) .200 (5.08) .188 (4.77) .051 (1.29) .020 (.508) .100 (2.54) typ .009 (0.22) 15 .252 (6.4) 1 9 16 8 18 17 dolby ? on/off sw dolby ? on/off sw v cc rectifier output stage bypass output 1 2 3 4 bias supply input rectifier switch 5 emphasis/ 6 to rectifier input 7 stage bypass 8 output 16 15 14 13 bias bypass input 12 emphasis/ 11 to rectifier input 10 9 17 18 gnd de ? emphasis switch de ? emphasis switch pin connection diagram
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