NTE734 integrated circuit tv fm if gain block description: the NTE734 f ? m gain block linear monolithic integrated circuit is designed for use in communicatios and high fidelity f ? m receivers. this device consists of a three ? stage limiting amplifier section, a regu- lated powersupply, an a ? m detector and 330 ohm input and output terminations with 7pf shunting capacitance required foer 10.7mhz ceramic filters. gain can be adjusted without effect on input and output conditions by addition of a fixed resistor between pins 3 and 7. absolute maximum ratings: supply current, i cc 22ma . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . supply voltage, v cc 16v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . input voltage (pin 1 & 3) 3.0v . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . internal power consumption (note 1), p o 750mw . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . operating temperature range, t opr ? 40 to +85 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . storage temperature range, t stg ? 65 to +150 c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . note 1. derate at the rate of 8.3mw/ c at temperature above +25 c static electrical characteristics: (t a = +25 c, v cc = +12v unless otherwise specified) parameter symbol test conditions min typ max unit supply voltage v 8 operating range 8 12 16 v supply current i cc 14 18 22 ma input impedance parallel input resistance x rin 270 330 390 ? parallel input capacitance x cin ? 7 ? pf output impedance parallel output resistance x rout 270 330 390 ? parallel output capacitance x cout 5 7 10 pf total device dissipation p d ? ? 400 mw terminal voltage (note 2) v 1 ? 1.4 ? v v 2 ? 1.4 ? v v 3 ? 2.8 ? v v 5 ? 2.4 ? v v 6 ? 1.8 ? v note 2. all d ? c voltage readings are with respect to network ground
dynamic electrical characteristics: (t a = +25 c, v cc = +12v, f = 10.7mhz unless otherwise specified) parameter symbol test conditions min typ max unit input limiting threshold v th ? 3db, 330 ? load and source ? 1200 ? v output voltage swing v om ? 0.7 ? v p ? p output noise voltage 330 ? load and source ? 4 ? m v rms output voltage gain a vout v in = 100 m v rms , f = 1mhz 43 47 53 db power supply rejection v sr v in = 250 m v rms , f = 100hz (note 3) ? ? 37 ? db detector output voltage change ? v 6 v in = 15 m v rms at 1mhz with 50% 1khz modulation ? 100 ? m v p ? p note 3. add 22db attenuation at input. pin connection diagram (+) v cc 1 2 3 4 if input if input bypass reg v (+) output gnd 8 7 6 5 low if output detector output high if output 14 .260 (6.6) .390 (9.9) max 85 .155 (3.93) .145 (3.68) .300 (7.62) .300 (7.62) .100 (2.54)
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