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NJM2775A Datasheet(PDF) 1 Page - New Japan Radio |
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NJM2775A Datasheet(HTML) 1 Page - New Japan Radio |
1 / 3 page NJM2775A PRELIMINARY - 1 - PRE&HI-POWER AMPLIFIER with ALC for PORTABLE TAPE RECORDER s s s s GENERAL DESCRIPTION s s s s PACKAGE OUTLINE The NJM2775A is a pre&power amplifier with ALC designed for micro and compact cassette recorders. It contains pre-amplifier, ALC circuit, power amplifiers, and ripple filter. The pre-amplifier amplifies the signal come from magnetic head. The ALC circuit limits the input signal to optimize level in recording. The power amplifiers drive a speaker in play back and the magnetic head in recording. The ripple filter stabilizing the supply voltage to the internal pre-amplifier and an external condenser microphone. The NJM2775A improves high output power compared with the NJM2128. It is suitable for portable tape recorder, and other portable playing back and recording recorder items. s s s s FEATURES qOperating Voltage V +=1.8 to 6.0V qOperating Current 9mA typ. qOutput Power 350mW typ. at V +=3V,R L=4 Ω,THD=10% qAutomatic Level Control 200mVrms typ., at f=1kHz (ALC) Limit Level qRipple Filter R.R. 47dB typ., at f=200Hz,C=47 µF (Ripple Rejection) qBipolar Technology qPackage Outline DMP16 s s s s PIN CONFIGURATION 1 2 3 4 16 15 14 13 POW-INA POW+INA PREOUT PGND PRE-IN 12 PRE AMP 5 6 POW+INB 7 RFOUT 11 PRE+IN 10 V + POW-INB ALCIN POWOUTA POWOUTB SGND 8 9 POWER AMPA RIPPLE FILTER ALC POWER AMPB RFIN TC NJM2775AM PIN FUNCTION 1.PRE +IN 2.SGND 3.POW +1NA 4.POW -INA 5.POW -INB 6.POW +INB 7.REFOUT 8.REFIN 9.ALCIN 10.TC 11.POW OUTB 12.PGND 13. V + 14.POW OUTA 15.PREOUT 16.PRE -IN |
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