View LA4165M_6685255.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

specifications of any and all sanyo semiconductor co.,l td. 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 ' sproductsor 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 el ectronics equipment (home appliances, av equipment, communication device, office equipment, industrial equ ipment etc.). the products mentioned herein shall not be intended for use for any "special application" (medica l equipment whose purpose is to sustain life, aerospace instrument, nuclear control device, burning appliances, t ransportation machine, traffic signal system, safety equipment etc.) that shall require extremely high level of re liability and can directly threaten human lives in case of failure or malfunction of the product or may cause har m to human bodies, nor shall they grant any guarantee thereof. if you should intend to use our products for app lications outside the standard applications of our customer who is considering such use and/or outside the scope of our intended standard applications, please consult with us prior to the intended use. if there is n o consultation or inquiry before the intended use, our customer shall be solely responsible for the use. 40208 ms jk/d2599th (ot)/12893ts/6089ta, ts no.2824-1/16 LA4165M overview the LA4165M recording-playback ic combines the functions required to de sign the recording and playback systems and motor control circuits for micro- or standard -cassette tape recorders into a single chip. functions provided include automatic audio input sensing during recording with stepless setting of the on-off threshold using the playback volume control, and led indication that recording is in progress. recording and playback modes can be toggled using a single control pin. the LA4165M also has an on-chip preamp, power amp and alc circuits, and has been designed to operate with a 3v power supply. the device is available in 24-pin plastic mfps. features ? audio input sensor circuit ? led driver circuit ? motor control circuit ? alc circuit ? preamp and power amp circuits specifications maximum ratings at ta = 25 c parameter symbol conditions ratings unit maximum supply voltage v cc max 4.5 v allowable power dissipation pd max g vn + power 1100 mw operating temperature topr ? 10 to + 50 c storage temperature tstg ? 55 to + 150 c monolithic linear ic for micro-cassette tape recorder recordin g / pla y back ic o rdering number : en2824a
LA4165M no. 2824-2/16 operating conditions at ta = 25 c parameter symbol conditions ratings unit recommended supply voltage v cc 3.0 v operating voltage range v cc op 1.8 to 3.6 v play 4 ? power amp load resistance r l pwr rec 10 k ? preamp load resistance r l pre 10 k ? operating characteristics at ta = 25 c, v cc = 3.0v, r l = 4 ? (play power), r l = 10k ? (rec power), r l = 10k ? (pre), f = 1khz, 0dbm = 0.775v ratings parameter symbol conditions min typ max unit pre+power quiescent current i cc-r rec mode, vi = 0v 12 25 38 ma quiescent current i cc-p play mode, vi = 0v 13 26 39 ma voltage gain (closed loop) rec vg tr rec mode, v o = ? 5dbm 62 64.5 67 db voltage gain (closed loop) play vg tp play mode, v o = ? 5dbm 71 73.5 76 db pre amp voltage gain (closed loop) rec vg1 r rec mode, v o = ? 10dbm, r nf = 100 ? 32.5 35 37.5 db voltage gain (closed loop) play vg1 p play mode, v o = ? 10dbm, r nf = 100 ? 42.5 45 47.5 db maximum output voltage v o max thd = 1%, play mode 0.3 0.6 1.0 v equivalent input noise voltage v ni play mode, bpf = 20hz to 20khz 0.5 1.1 2.0 v input resistance r i 22.5 32.2 42 k ? total harmonic distortion thd1 play mode, v o = 0.4v 0.01 0.11 1.0 % power amp voltage gain vg2 v o = ? 5dbm, r l = 4 ? 26.0 28.5 31.0 db output power p o thd = 10%, r l = 4 ? 180 215 350 mw total harmonic distortion thd2 p o = 30mw, r l = 4 ? 0.05 0.5 1.5 % output noise voltage v no rv = 0, rl = 4 ? , bpf = 20hz to 20khz 5 25 100 v alc alc width alc w input voltage above alc cut-in voltage for alc output to rise by 2.5db 30 38 45 db alc distortion alc thd pre : vi = ? 40dbm 0.1 0.67 1.5 % alc output alc v o pre : vi = ? 40dbm 0.35 0.46 0.55 v alc start input level alc v in ? 66.5 ? 69 ? 71.5 dbm voice sensor minimum activation input voltage v op min vr (10k ? ) max ? 84.5 ? 81.5 ? 78.5 dbm maximum activation input voltage v op max vr (10k ? ) max ? 62.5 ? 59.5 ? 56.5 dbm input hysteresis v o hl 3 6 9 db led drive led drive current i led red led 1.0 2.5 4.5 ma moter control reference voltage v ref i m = 100ma 1.1 1.25 1.4 v quiescent current i d i m = 100ma 2.0 3.0 6.0 ma shunt ratio k i m = 50-100ma 45 50 55 residual voltage v sat i m = 200ma, v ref = v cont 0.1 0.3 0.5 v ? vref voltage characteristic of reference voltage vref / ? v cc v cc = 1.8 to 4.5v, i m = 100ma 0 0.1 0.5 %/v ? k voltage characteristic of shunt ratio k / ? v cc v cc = 2.0 to 4.5v, i m = 50 ? 100ma 0 0.1 0.5 %/v ? vref current characteristic of reference voltage vref / ? i m i m = 50 to 200ma 0 0.007 0.03 %/ma ? k current characteristic of shunt ratio k / ? i m i m = 50 ? 100ma to 150 ? 200ma ? 0.05 + 0.005 + 0.05 %/ma
LA4165M no. 2824-3/16 package dimensions unit : mm (typ) 3108a recording/playback mode functions c : on : off circuit preamp alc circuit led drive voice sensor circuit power amp motor control recording mode (mic amp) c c c * c * c c * playback mode (eq amp) c c c * : block is on when mic input voltage exceeds the threshold level.
LA4165M no. 2824-4/16 test circuit
LA4165M no. 2824-5/16 equivalent circuit
LA4165M no. 2824-6/16 block diagram sample application circuit c13 c 1 3 p r preamp p r e a m p sets alc s e t s a l c width. w i d t h . power p o w e r gain g a i n power amp p o w e r a m p vox v o x cont c o n t alc1 a l c 1 vox v o x governor g o v e r n o r rec r e c vox v o x r5 r 5 c8 c 8 r4 r 4 c9 c 9 c7 c 7 c2 c 2 4700pf 4 7 0 0 p f + - - + + - + - m + + + + + + + + + + + + + + + - - + + - + - m + + + + + + + + + + + + + + set large enough for proper ripple filtering. v cc mic j 33000pf 2200 pf 2200pf c14 c12 c13 pr r11 c5 r/p head r8 determines playback eq characteristic. determines rec/pb preamp gain. voice sensor activation level set. as r2 is reduced, the voice sensor circuit activates at a low input voltage. preamp sets alc width. c15 r10 15k ? c17 c 1 7 220 2 2 0 f c17 220 f c18 220 f r6 30k ? vr2 30k ? r7 c19 r t vox vox cont alc1 power gain power amp c16 r9 3.9k ? leave this pin open if led is not used. swon: voxoff oscillation suppression. c7 c8 sets alc attack/ recovery time. sets voice sensor attack time. turn on to disable the voice sensor circuit. sp 4 ? r4 c9 r5 c10 c20 governor r p c2 c1 p r r2 c3 r3 c4 c6 e j c24 4700pf 3900pf sets recording current. 2200pf 2200pf 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 4.7 f 3k ? 820k 8 2 0 k ? 10k 1 0 k ? 820k ? 10k ? 470 f 1 f 22 f 2.2 2 . 2 f 2.2 f 560k 5 6 0 k ? 560k ? 300k 3 0 0 k ? 300k ? 10 f 1 f 300 3 0 0 ? 300 ? 6k 6 k ? 6k ? 100 1 0 0 ? 100 ? 30k 3 0 k ? 30k ? 1k 1 k ? 1k ? 2.2k 2 . 2 k ? 2.2k ? 50 5 0 ? 50 ? 300k 3 0 0 k ? 300k ? 12k 1 2 k ? 12k ? 12k 1 2 k ? 12k ? 100k 1 0 0 k ? 100k ? 4.7 f 220 f 1 f 0.47 f 10k ? 10k ? c11 c 1 1 4.7 4 . 7 f c11 4.7 f sets voice sensor off time
LA4165M no. 2824-7/16 functional description [preamp] ? the frequency response characteristic of the low noise preamplifier is selected by the record/playback select pin cont (pin 20). if cont is taken to ground to select record mode, the frequency response is flat. if cont is left open, playback mode is selected and the preamp has the nam response curve. [power amp] ? the power amplifier is suited to driving 4 ? speakers and earphones. [alc] ? the alc (automatic level control) circuit is active in r ecording mode. it detects the power amp output level, and controls the preamplifier input gain so that the power amp output level is constant. [vox cont vox] ? this circuit monitors the power amp output level, and turn s the motor drive on or off. when the vox cont circuit is operating, the led drive output on pin 16 is active. the led is extinguished if the supply voltage drops to 1.8v. [gvn] ? motor control circuit. the external constants are determin ed according to the motor char acteristics to keep the motor speed constant. circuit components the function of each component, together with recommended values in parentheses, are listed below. ? c1 : (2200 to 4700pf) determines the frequency response of the signal voltage to the record/replay head during recording. its value should be selected according to the characteristics of the head. ? c2 : (4700pf) determines the playback equalization frequency response. ? c3 : (2200pf) suppresses high-frequency oscillation. ? c4 : (2200 to 4700pf) controls high-frequency characteristics. c4 will interact with r3 to reduce the power amp input level if it is too large. ? c5 : (2200 to 4700pf) microphone input high-frequency filter. this should be selected according to the high-frequency cut-off and the value of c21. ? c6 : (470 f) couples the power amp output to the speaker or headphones. a value of 220 f is adequate when using an 8 ? speaker or headphones. ? c7 : (1 f) suppresses oscillation. for low-temperature operation (down to - 10 c), a 0.47 f tantalum electrolytic capacitor should be used. ? c8 : (22 f) alc control smoothing filter. c8 should not be too large, since this will also increase attack time. ? c9 : (0.1 to 2.2 f) voice sensor (vox) control smoothing filter. c8 should no t be too large, since this will also increase turn-on delay (the time for the motor drive circuit to turn on after the microphone input voltage reaches the set level). ? c10 : (10 f) voice sensor transient suppression. this prevents the mo tor drive from being turned on by large transient pulses. ? c11 : (47 f) determines the time constant for motor drive hold after the voice sensor circuit turns off. the motor drive remains on for approximately 4 to 5 seconds if the resistor in parallel with r5 is 300k ? . continued on next page
LA4165M no. 2824-8/16 continued from preceding page. ? c12 : (4.7 f) together with series resistor r8, determines the preamp low-frequency cut-off. for c12 = 4.7 f and r8 = 100 ? , the cut-off is approximately 200hz. the cut-off can be set to approximately 100 or 300hz by giving c12 a value of 10 f or 2.2 f, respectively. ? c13 : (0.47 f) preamp input coupling capacitor. ? c14 : (2200 pf) emi suppression capacitor. select this according to the characteristics of the record/play head. ? c15 : (3300pf) microphone input high-frequency filter. ? c16 : (220 f) reference voltage decoupling capacitor. ? c17 : (220 f) head dc supply ripple filter. ? c18 : (220 f) supply decoupling capacitor. ? c19 : (1 to 10 f) reference resistor (r7) bypass capacitor. setting sh ould be performed according to motor characteristics. ? c20 : (1 f) load (motor) bypass capacitor. setting should be performed accord ing to motor characteristics. ? r1 : (5 to 15k ? ) determines the flow of ac current through the head. select this acco rding to the head ch aracteristics and alc level. ? r2 : (820 ? ) determines the microphone input level at which the voi ce sensor starts operating when vr1 is at minimum. larger values for r2 give voice sensor operation at lower microphone input signal levels. ? r3 : (3k ? ) improves high-frequency response and reduces high-frequency distortion. distortion above 5khz increases as r3 decreases. ? r4 : (100k ? to 3m ? ) determines alc recovery time. ? r5 : (300k ? ) voice sensor circuit control current resistor. r5 and c11 form the motor drive hold-time constant. ? r6 : (20 to 70k ? ) determines motor speed. select this according to the mo tor characteristics and the va lue of variable resistor vr2. ? r7 : (100 to 300 ? ) select this according to the motor characteristics. ? r8 : (0 to 200 ? ) preamp negative feedback resistor. ? r9 : (3.9k ? ) bias set resistor for elect rostatic microphones. the current into or out of the reference voltage pin (pin 21) should not be greater than 1ma, or the biase of other circuits will be affected. in particular, the power amplifier output power will be reduced. continued on next page.
LA4165M no. 2824-9/16 continued from preceding page. ? r10 : (15k ? ) recording head bias set resistor. since the bias referen ce voltage is the filtered dc voltage on pin 19, excessive current should not be drawn by r10, or the re ference voltage on pin 21 will be affected. the following diagram shows the internal circuit of the reference voltage generator. dc bias equivalent circuit 23 1.5v 2.8v 3.0v 22 21 20 19 18 v cc v cc v ref i out2 i out1 4k ? 5k ? the voltage on pin 19 drops by (i out1 100 ? ), affecting the reference voltage. 100 ? ? r11 : (5 to 20k ? ) select this to match the electrostatic microphone output characteristics. ? vr1 : (10 to 30k ? ) adjusts the output level in playback mode, and the voice sensor sensitivity in record mode. ? vr2 : (5 to 30k ? ) motor speed fine adjustment. ? led : (red led) illuminated while recording. the led starts to go out when v cc drops to 2.2v, and is completely extinguished when v cc drops to 1.8v. pin no. symbol pin name voltage [v] 1 v eq c equalizer c 1.5 2 v pre out pre out 1.5 3 v pwr in power in 1.5 4 v out power out 1.5 5 alc auto level cont 0 6 vox cont voice ope cont 0 7 vox sw voice ope switch 3.0 8 vox recov voice ope recorder 0 9 vox c voice ope c 0 10 v cc gvn v cc 3.0 11 v out gvn gvn out 12 gnd gvn gvn gnd 0 13 vs gvn vs gvn 14 v ref gvn gvn v ref 1.2 15 gvn cont gvn cont 16 led led drive 17 gnd power gnd 0 18 v cc v cc 3.0 19 r.f ripple filter 2.8 20 r/p cont rec/play cont 3.0 21 v ref v ref 1.5 22 in pre in 1.5 23 nf pre nf 1.5 24 gnd pre gnd 0
LA4165M no. 2824-10/16 design notes 1. locate the LA4165M as close as possible to the power so urce, to prevent voltage and power loss due to supply line resistance. change "inner r 1 " to "wiring resistance r 1 " change "inner r 2 " to "wiring resistance r 2 " the total wiring resistance r t = r 1 + r 2 causes the voltage v c at the ic supply pins to drop from the source voltage v cc to v c = v cc ? i cc (r 1 + r 2 ) the power output from the amplifier is equal to p0 (v c ) 2 2. keep the supply lines for the amplifier circuits separate from those for the motor drive circuit. this will reduce the effect of motor noise on the amplifiers and help prevent voltage drop due to motor load from affecting the amplifier supply voltage. the recommended supply layout for the LA4165M power supply lines is shown below. 3. do not connect a resistor to pin 6. th e capacitor on this pin is being charged by a small current to determine the voice sensor attack time. bypassing this capacitor with a resist or will increase attack time, and possibly prevent the voice sensor circuit from turning on.
LA4165M no. 2824-11/16 4. the voice sensor circuit has approximately 6db hysteresis. it turns on at a voltage on pin 6 of approximately 1.1v and turns off at approximately 0.65v. biasing pin 6 higher than 0.65v will cause it to remain on. the voice sensor equivalent circuit is shown below. 5. in record mode, grounding pin 8 will turn off the voice sensor circuit and keep the motor drive circuit operating continuously. 6. pin 7 is close to 0v when the governor circuit is on, and close to v cc when it is off. the voice sensor output stage equivalent circuit is shown below. 7. pin 16 is used solely for driving an external led, and should be left open when an led is not used. it is active only during record mode while the motor drive is on. the led drive circuit is shown below.
LA4165M no. 2824-12/16
LA4165M no. 2824-13/16
LA4165M no. 2824-14/16
LA4165M no. 2824-15/16
LA4165M ps no. 2824-16/16 sanyo semiconductor co.,ltd. assumes no responsib ility for equipment failures that result from using products at values that exceed, even momentarily, rate d values (such as maximum ra tings, operating condition ranges, or other parameters) listed in products specif ications of any and all sanyo semiconductor co.,ltd. products described or contained herein. sanyo semiconductor co.,ltd. strives to supply high-qual ity high-reliability products, however, any and all semiconductor products fail or malfunction with some probabi lity. it is possible that these probabilistic failures or malfunction could give rise to acci dents 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 e vents cannot occur. such measures include but are not limited to protective circuits and error prevention c ircuits for safe design, redundant design, and structural design. upon using the technical information or products descri bed 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 f or 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. information (including circuit diagr ams and circuit parameters) herein is for example only; it is not guaranteed for volume production. any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. when designing equi pment, 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 c o.,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 conc erned 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 in formation storage or retrieval system, or otherwise, without the prior written consent of sanyo semiconductor co.,ltd. this catalog provides information as of april, 2008. specifications and information herein are subject to change without notice. v ref -- i m load current, i m -- ma reference voltage, v ref -- v jk416545 250 0 0.5 1.0 50 100 150 200 1.5 0 gvn v cc = 3.0v v in = ? 60dbm (v ox on) 0 46 47 48 49 50 51 k -- v cc supply voltage, v cc -- v shunt division ratio, k 6 jk416546 012345 i m = 50 to 100ma gvn v in = ? 60dbm v ref -- v cc supply voltage, v cc -- v reference voltage, v ref -- v 0 0.5 1.0 1.5 6 jk416544 012345 gvn v in = ? 70dbm (v ox on) i m = 100ma 47 48 49 50 51 52 k -- i m load current, i m -- ma shunt division ratio, k 300 0 50 100 150 200 250 jk416547 gvn v cc = 3.0v v in = ? 70dbm (v ox on)

▲Up To Search▲

Price & Availability of LA4165M

	To Download LA4165M Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .