specifications of any and all sanyo semiconductor co.,ltd. products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer ' s products or equipment. to verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer ' s products or equipment. any and all sanyo semiconductor co.,ltd. products described or contained herein are, with regard to "standard application", intended for the use as general electronics equipment. the products mentioned herein shall not be intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee thereof. if you should intend to use our products for new introduction or other application different from current conditions on the usage of automotive device, communication device, office equipment, industrial equipment etc. , please consult with us about usage conditi on (temperature, operation time etc.) prior to the intended use. if there is no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. 41112 sy 20120301-s00001 no.a2050-1/5 LA74309FA overview LA74309FA is a microphone amplifier for digital still cameras th at have mono audio recording. the analog signal processing for the recording of the digital still camera or other equipm ent can be easily composed, because the mic power supply and the alc circuit are built-in. moreover, the regulator is bui lt-in, therefore external regulator ic is unnecessary. features ? microphone (mic) amplifier (+20db) ? mic power supply with built-in pull-up resistor ? automatic level control (alc) amplifier (output level=-1dbv 2.5vpp) ? 3rd order lpf (fc=11khz) ? 3v regulator (at the time of v cc =3.3v, internal supply voltage: v cc a 3.0v) ? standby control (i cc 10 a) specifications absolute maximum ratings at ta=25 c parameter symbol conditions ratings unit maximum power supply voltage v cc max 4.0 v allowable power dissipation pd max ta 85 c 50 mw operating temperature topr -20 to +85 c storage temperature tstg -55 to +150 c caution 1) absolute maximum ratings represent the va lue which cannot be exceeded for any length of time. caution 2) even when the device is used within the range of abso lute maximum ratings, as a resu lt of continuous usage under hig h temperature, high current, high voltage, or drastic temperature change, the reliability of the ic may be degraded. please contact us for the further details. ordering number : ena2050 monolithic linear ic microphone amplifier for digital still camera
LA74309FA no.a2050-2/5 operating conditions at ta = 25 c parameter symbol conditions ratings unit recommended power supply voltage v cc 3.3 v operating voltage range of v cc v cc op 3.1 to 3.6 v electrical characteristics at ta=25 c, v cc =3.3v, f=1khz parameter symbol conditions ratings unit min typ max circuit current v cc no signal current dissipation i cc v cc =3.3v, active mode (pin3=3v) 3.9 5.3 6.7 ma v cc standby current dissipation i cc s v cc =3.3v, standby mode (pin3=0v) 10 a rec output system standard rec output level vor v in =-49dbv at alc in pin (=standard level) -10 -9 -8 dbv standard rec output distortion hdr alc in, v in =-49dbv, thd from to 5th harmonic 0.1 0.2 % alc characteristics alm alc in, v in =-17dbv (=standard level +32db) -3 -1 dbv alc thd almd alc in, v in =-17dbv (=standard level +32db), thd from to 5th harmonic 0.25 1 % alc in maximum input level vinrmx rec output thd 3% -10 dbv rec output noise level vnor no signal at mic in pin, with jis-a filter -53 -47 dbv rec output frequency characteristics 1 feqr1 alc in, v in =-17dbv, the output level ratio at f=11khz/1khz -5 -3 -1 db rec output frequency characteristics 2 feqr2 alc in, v in =-17dbv, the output level ratio at f=22khz/1khz -18 -12 db rec output frequency characteristics 3 feqr3 alc in, v in =-17dbv, the output level ratio at f=100khz/1khz -55 -45 db mic output system mic voltage gain vgmic v in =-39dbv at mic in pin 19 20 21 db mic output thd hdmic mic in, v in =-39dbv, thd from to 5th harmonic 0.03 0.1 % mic in maximum input level vinmmx mic output thd=3% -30 dbv mic v cc output dc voltage vmic with 6.2k load 1.5 1.7 1.9 v package dimensions unit : mm (typ) 3428 sanyo : micro10 3.0 0.25 0.16 0.5 4.9 1.03 0.1 3.0 0.55 1 10 2
LA74309FA no.a2050-3/5 pin assinment pin description pin no. pin description 1 gnd 2 alc input 3 standby ctl 4 mic output 5 mic input 6 ripple removal for vref 7 internal mic power supply 8 alc det 9 rec output 10 v cc equivalent circuit block diag ram & application circuit gnd 1 2 3 4 5 10 9 8 7 6 alc in standby l mic out mic in v cc rec out alc det int mic v cc vref LA74309FA 2 7 8 alc mic v cc v cc a 3.0v v cc 3.3v det charge 6 lpf reg 3 4 5 1 9 10 vref mic mic in standby ctl gnd rec out - +
LA74309FA no.a2050-4/5 pin functions pin no. pin name dc voltage ac volt age functions equivalent circuit 1 gnd 0v ground 2 alc in output level=-49dbv (at mic in=-69dbv) maximum input level =-10dbv v cc a (=3.0v) 2 vrefl 3 standby l standby control pin over 2v: standby off 3 4 mic out 1.60v output level=-49dbv (at mic in=-69dbv) mic output pin v cc a (=3.0v) 4 vrefl 5 mic in standard input level =-69dbv maximum input level =-30dbv mic input pin v cc a (=3.0v) 5 vrefl 6 vref 2.30v mic v cc and ripple rejection pin for vrefl v cc a (=3.0v) 6 7 int mic v cc 2.30v mic power supply pin v cc a (=3.0v) 7 continued on next page.
LA74309FA no.a2050-5/5 continued from preceding page. pin no. pin name dc voltage ac volt age functions equivalent circuit 8 alc det alc detector pin v cc a (=3.0v) 8 9 rec out 1.60v output level=-9dbv (at mic in=-69dbv) rec output pin v cc (=3.3v) 9 vrefl 10 v cc 3.3v power supply pin ps this catalog provides information as of april, 2012. specifications and info rmation herein are subject to change without notice. sanyo semiconductor co.,ltd. assumes no responsib ility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all sanyo semiconductor co.,ltd. products described or contained herein. sanyo semiconductor co.,ltd. strives to supply high-quality high-reliab ility pr oducts, however, any and all semiconductor products fail or malfunction with some probab ility. it is possible that these pr obab ilistic failures or malfunction could give rise to accidents or events that could endanger human lives, trouble that could give rise to smoke or fire, or accidents that could cause dam age to other property. when designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. upon using the technical information or products described herein, neither warranty nor license shall be granted with regard to intellectual property rights or any other rights of sanyo semiconductor co.,ltd. or any third party. sanyo semiconductor co.,ltd. shall not be liable for any claim or suits with regard to a third party's intellctual property rights which has resulted from the use of the technical information and products mentioned above. any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. when designing equip ment, refer to the "delivery specification" for the sanyo semiconductor co.,ltd. product that you intend to use. in the event that any or all sanyo semiconductor co.,ltd. products described or contained herein are controlled under any of applicable local export control laws and regulations, such products may require the export license from the authorities concerned in accordance with the above law. no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written consent of sanyo semiconductor co.,ltd.
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