NTE704 integrated circuit tv sound, if amp features & applications: exceptionally high gain: power gain at 4.5hz ? 75db typ. excellent limiting characteristics: input limiting voltage (knee) = 300 v at 4.5mhz excellent am rejection: > 50db at 4.5mhz high audio?voltage recovery: 20mv typ at 4.5mhz, 25khz deviation wide frequency capability: 100khz to > 20mhz comprehensive circuit functions: if amplifier am and noise limiter fm detector audio preamplifier absolute maximum ratings : (t a = +25 c unless otherwise specified) maximum input?signal voltage (between pin1 and pin2) 3v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . maximum device dissipation 300mw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . recommended minimum dc supply voltage (v cc ) 5.5v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . operating temperature range, t opr ?55 to +125 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . storage temperature range, t stg ?65 to +150 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . electrical characteristics : (t a = +25 c unless otherwise specifid) parameter symbol test conditions min typ max unit total device dissipation p t note 1 v cc = 6v 73 90 110 mw v cc = 7.5v 106 120 150 mw v cc = 10v 165 190 230 mw voltage gain a f = 1mc/s, v cc = 6v 60 66 ? db note 2 v cc = 7.5v 65 70 ? db v cc = 10v 65 71 ? db v cc = 7.5v, f = 4.5mc/s 60 67 ? db note 2 f = 10.7mc/s 55 60 ? db note 1. total current drain may be determined by dividing p t by v cc . note 2. recommended minimum dc supply voltage (v cc ) is 5.5v. nominal load current flowing into pin5 is 1.5ma at 7.5v.
electrical characteristics (cont?d) : (t a = +25 c unless otherwise specifid) parameter symbol test conditions min typ max unit parallel input resistance r in f = 4.5mc/s, v cc = 7.5v ? 3 ? k ? parallel input capacitance c in ? 7 ? pf parallel output resistance r out f = 4.5mc/s, v cc = 7.5v ? 31.5 ? k ? parallel output capacitance c out ? 4.2 ? pf noise figure nf f = 4.5mc/s, v cc = 7.5v ? 8.7 ? db input limiting voltage (knee) v i(lim) f = 4.5mc/s, v cc = 7.5v ? 300 400 v recovered af v o(af) f = 4.5mc/s v cc = 6v ? 155 ? mv v cc = 7.5v 135 188 ? mv v cc = 10v ? 220 ? mv amplitude modulation rejection amr f = 4.5mc/s, v cc = 7.5v ? 50 ? db discriminator output resistance r o (dics) f = 4.5mc/s, v cc = 7.5v ? 60 ? ? total harmonic distortion thd f = 4.5mc/s, v cc = 7.5v ? 1.8 ? % pin connection diagram (top view) 10 9 8 5 4 3 2 7 6 1 bypass input 4.5mh z primary discrimin transformer/v cc (+) secondary discrim transformer secondary discrimin transformer primary discrimin transformer tertiary winding gnd input 4.5mh z output 4 .018 (0.45) dia typ .335 (8.52) dia max .115 (2.92) .230 (5.84) dia .260 (6.6) max .500 (12.7) min .370 (9.4) max 1 2 3 4 5 6 7 8 9 10
|
