OrdeOrdering numbering numberr : ENA2050 : ENA2050 LA74309FA Monolithic Linear IC Microphone Amplifier LA74309FA Operating Conditions at Ta = 25C Parameter Symbol Conditions Ratings Unit Recommended power supply voltage V 3.3 V CC Operating voltage range of V V op 3.1 to 3.6 V CC CC Electrical Characteristics at Ta=25C, V =3.3V, f=1kHz CC Ratings Parameter Symbol Conditions Unit min typ max Circuit current I V no signal current dissipation V =3.3V, Active mode (Pin3=3V) 3.9 5.3 6.7 mA CC CC CC I S V standby current dissipation V =3.3V, Standby mode (Pin3=0V) 10 A CC CC CC REC output system Standard REC output level VOR V =-49dBV at ALC IN pin (=Standard level) -10 -9 -8 dBV IN HDR Standard REC output distortion ALC IN, V =-49dBV, THD from to 5th harmonic 0.1 0.2 % IN ALM ALC characteristics ALC IN, V =-17dBV (=Standard level +32dB) -3 -1 dBV IN ALMD ALC IN, V =-17dBV (=Standard level +32dB), IN ALC THD 0.25 1 % THD from to 5th harmonic VINRMX ALC IN maximum input level REC output THD3% -10 dBV VNOR REC output noise level No signal at MIC IN pin, with JIS-A Filter -53 -47 dBV REC output frequency FEQR1 ALC IN, V =-17dBV, The output level ratio at IN -5 -3 -1 dB characteristics 1 f=11kHz/1kHz REC output frequency FEQR2 ALC IN, V =-17dBV, The output level ratio at IN -18 -12 dB characteristics 2 f=22kHz/1kHz REC output frequency FEQR3 ALC IN, V =-17dBV, The output level ratio at IN -55 -45 dB characteristics 3 f=100kHz/1kHz MIC output system VGMIC MIC voltage gain V =-39dBV at MIC IN pin 19 20 21 dB IN HDMIC MIC output THD MIC IN, V =-39dBV, THD from to 5th harmonic 0.03 0.1 % IN VINMMX MIC IN maximum input level MIC output THD=3% -30 dBV VMIC MIC V output DC voltage With 6.2k load 1.5 1.7 1.9 V CC Package Dimensions unit : mm (typ) 3428 3.0 10 1 2 0.5 0.25 0.16 SANYO : Micro10 No.A2050-2/5 0.1 3.0 1.03 4.9 0.55