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overview the LA8638NV provides dynamic range expansion, noise suppression for enhancing the quality of audio signals in cordless telephones and other communications systems. this single chip provides the functions that make it ideal for cordless telephones: a compressor with a logarithmic compression ratio of 1/2, expander with a logarithmic expansion ratio of 2, splatter filter, microphone amplifier, btl amplifier, waveform shaper for the receiving signal, muting for both receiving and transmitting signals, and standby operation. functions transmitter circuits: compressor, microphone amplifier, limiter (idc), muting, output level changes to user- specified levels, and splatter filter receiver circuits: expander, buffer amplifier for filters, muting, output level changes to user-specified levels, and btl amplifier other circuits: waveform shaper for the receiving signal and standby operation features full processing of baseband signals for both receiving and transmitting signals built-in btl receiver amplifier for driving a ceramic speaker with a load of 2 k ? standby operation that conserves battery power during intermittent reception by disabling all but the waveform shaper for the receiving signal built-in splatter filter with user-specified fc low-voltage operation (1.8 v to 5.5 v) package dimensions unit: mm 3191a-ssop30 115 16 7.6 0.65 9.75 0.5 5.6 0.1 1.5max 30 0.22 (0.33) 0.15 (1.3) monolithic linear ic n1403tn (ot) no. 6627-1/16 sanyo: ssop30 [LA8638NV] sanyo electric co.,ltd. semiconductor company tokyo office tokyo bldg., 1-10, 1 chome, ueno, taito-ku, tokyo, 110-8534 japan low-voltage compander ic for cordless telephones LA8638NV ordering number : enn6627 parameter symbol conditions ratings unit maximum power supply voltage v cc max 7.0 v maximum power dissipation pd max ta 75? 100 mw operating temperature topr ?0 to +75 ? storage temperature tstg ?0 to +125 ? specifications maximum ratings at ta = 25? any and all sanyo products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft? control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. consult with your sanyo representative nearest you before using any sanyo products described or contained herein in such applications. sanyo assumes no responsibility 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 products described or contained herein.
no. 6627-2/16 LA8638NV parameter symbol conditions ratings unit min typ max current drain with no signal i cco no signal 3.0 5.4 7.6 ma standby current i stby standby mode, no signal 0.4 0.76 1.0 ma [transmitter block] v inrefc = ?0 dbv = 0 db, microphone amplifier gain = 40 db, r l = 15 k ? output level v o cv in = vinrefc = 0 db ?8.1 ?6.1 ?4.1 dbv gain change level g c cv in = ?0 db 3.5 4.0 4.4 db gain error g e cv in = ?0 db ?.0 ?.7 +1.0 db total harmonic distortion thdc v in = 0 db 0.45 1.0 % output noise voltage v no c rg = 620 ? , f = 20 to 20 khz 1.8 4.5 mvrms limiting voltage v lt v in = +30 db, 1 khz bpf 0.88 1.05 1.23 vp-p microphone amplifier maximum voltage gain vg max 40 46 db low pass filter attenuation latt f in = 5 khz; fifth-order butterworth function 12.0 16.5 25.0 db filter (fc = 3.35 khz) muting attenuation attc v in = +30 db, 1 khz bpf ?3 ?5 dbv crosstalk level ctc rx? in = ?0 dbv, 1 khz bpf ?1 ?0 dbv [receiver block] v inrefc = ?0 dbv = 0 db, r l = 15 k ? output level v o ev in = v inrefc = 0 db ?8.8 ?6.3 ?3.8 dbv gain change level g c ev in = 0 db 6.0 7.1 8.4 db gain error g e ev in = ?0 db ?.5 +0.3 +2.0 db output noise voltage v no e rg = 620 ? , f = 20 to 20 khz 18 40 ?rms muting attenuation atte v in = +10 db, 1 khz bpf ?00 ?0 dbv crosstalk level cte tx? in = ?0 dbv, 1 khz bpf ?3 ?5 dbv [btl amplifier] r l = 2 k ? maximum output voltage v o btl thd = 3% 3.2 4.2 vp-p total harmonic distortion thdbtl v in = ? dbv 0.4 1.0 % [data shaper] v in = ?0 dbv, r l = 100 k ? duty factor duty 43 50 57 % dead zone unsn ?9.0 ?4.5 ?0.0 dbv output high-level voltage v h 2.2 2.38 v output low-level voltage v l 0.12 0.3 v [digital input characteristics] input high-level voltage 1 v ih 1 pins 17, 18, 20, and 22 0.6 v cc v input low-level voltage 1 v il 2 pins 17, 18, 20, and 22 0.25 v cc v input high-level voltage 2 v ih 2 pin 19 1.3 v input low-level voltage 2 v il 2 pin 19 0.3 v electrical characteristics at ta = 25?, v cc = 2.4 v, f in = 1 khz parameter symbol conditions ratings unit recommended power supply voltage v cc 2.4 v operating power supply voltage range v cc op 1.8 to 5.5 v operating conditions at ta = 25?
block diagram no. 6627-3/16 LA8638NV 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 + + fm-det ceramic speaker sub-cnt1 stby rx-mute rx-lvl-cnt btl-cnt tx-mute tx-data-in tx-lvl-cnt freq-adj cmp-rct v ref tx-lvl-adj mic-amp limiter sub-cnt2 gnd 1/2v cc cmp-nf dt-v ref exp-rct rx-mute tx-mute tx-lvl-cng sum-amp rx-att-adj btl-gnd rx-lvl-cng v ref 2 v cc v cc mic tx + + cmp lpf amp sub-cnt control idc exp att data shaper btl cpu a13519
sample application circuit no. 6627-4/16 LA8638NV 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 + + + fm-det ceramic speaker mic tx cpu LA8638NV a13520 0.33 f 0.1 f 3300pf 1 f 20k ? 1 f 68k ? 20k ? 1 f 0.47 f 33 f 0.1 f 4.3k ? 1 f 4.7 f 4.7 f 1k ? 0.1 f v cc top view 1k ? 15k ? 47k ? 22k ? 8200pf 47pf 100k ? 100k ? 100k ? 4.7k ? gnd tx-lvl-adj 1/2v cc v ref cmp-nf mic-in1 dt-v ref mic-in2 rx-in mic-out rx-fil-out cmp-rct exp-in freq-adj exp-rct tx-out rx-att-adj tx-lvl-cnt rx-out tx-data-in btl-in tx-mute btl-gnd btl-cnt btl-out1 sub-cnt2 btl-out2 sub-cnt1 v cc fsk-out
test circuit no. 6627-5/16 LA8638NV 1 2 3 4 5 6 7 LA8638NV 8 9 10 11 12 13 14 15 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 + + + + + + + + + + + input tp2 tp10 tp13 tp14 tp16 tp23 tp29 v cc top view v1=0.35v v2=0.45v 0.33 f 1 f 0.1 f 0.47 f 0.33 f 0.1 f 47 f 0.1 f 0.1 f 620 ? 2.2 f 15k ? 4.3k ? 100k ? 100k ? 4.7k ? 1k ? 2.2 f 4.7 f 0.1 f 620 ? 0.1 f 22pf 0.47 f 1k ? 47k ? 620 ? 15k ? 100k ? 47k ? 2k ? 0.33 f 620 ? 120k ? s7 s8 s9 s1 s2 s3 s4 s5 s12 s11 s6 s14 s13 a13521
usage notes 1. internal reference voltages the chip uses the following reference voltages internally. pin 29 (v ref ) power supply voltage follower (approximately 0.5 v cc ) pin 4 (v ref 2) fixed voltage (approximately 1.25 v) 2. microphone amplifier do not use the microphone amplifier as a buffer amplifier (non-reversing, zero-gain amplifier) because it is designed for high-gain operation?hat is, gains above 6 db?nd is susceptible to oscillation below that level. for proper circuit balance, use the same resistance value for the bias resistor (between pins 28 and 29) and the feedback resistor (between pins 26 and 27). 3. btl amplifier the built-in btl amplifier is designed for ceramic speakers only. do not use it to drive a dynamic speaker. 4. receiver input filter the receiver input filter uses external capacitors and resistors to determine the cutoff frequencies. the external circuit constants may be easily derived from the standardized circuit constants. start by making all resistors the same size and determine the capacitances required to achieve the desired cutoff frequencies from the circuit constants in table 1. then, because capacitors are not available for such precise values, choose the closest ones available and then fine- tune the resistances. (as a result, the final resistances will not necessarily be equal.) once the filter constants have been established, choose the bias voltage supply resistor r b so that the total dc resistance between pins 4 and 5 is on the order of 120 k ? to standardize the voltage drop across this path due to the small base current from the transistor in the pin 5 input circuit and thus the duty factor for the data shaper at the next stage. 5. splatter filter cutoff frequency the resistance between pin 24 and ground determines the cutoff frequency for the splatter filter in the transmitter circuit. (see graph 1 on p. 8.) to fine-tune this frequency, use two resistors and adjust them to achieve the desired frequency. 6. gain change levels the resistance between pins 29 and 30 determines the gain change level for the transmitter circuits. (see graph 2 on p. 8.) the resistance between pin 9 and ground determines the gain change level for the receiver circuits. (see graph 3 on p. 8.) no. 6627-6/16 LA8638NV table 1. standardized circuit constants the bessel functions for cutoff frequencies do not incorporate the notion of 3- db attenuation. the 3-db attenuation frequency for the second-order function is 1.38 fc; for the third-order function, 1.75 fc. lowpass filter type x1 x2 x3 second-order butterworth function 0.7071 1.4142 third-order butterworth function 0.2025 3.5468 1.3926 second-order bessel function 0.5000 0.6667 third-order bessel function 0.1451 0.8136 0.5647 + c in r b c 3 c 2 c 1 vref rr r a13522 c a =x a /2 f c r
7. protective diodes preventing static breakdown the control pins and data output pins have had their upper protective diodes removed so as to permit direct connection to a microcomputer. no protective diodes: v cc (pin 15), gnd (pins 1 and 12) lower protective diodes only: pins 16 to 20, 22 both upper and lower protective diodes: all other pins 8. preemphasis and deemphasis this chip provides preemphasis in the microphone amplifier and deemphasis in the btl amplifier's input stage. the amount depends on the cr time constants for the filters on the corresponding pins?he primary high pass filter on the microphone amplifier's positive (pin 28) or negative (pin 27) input for preemphasis and the primary low pass filter between pins 10 and 11 for deemphasis. 9. full-wave rectifier smoothing capacitors the external capacitors on pins 8 and 25 are for the full-wave rectifiers for the expander and compressor. they not only smooth the output but also determine the time constant for the transient characteristics. this time constant is the product of the capacitance and 15 k ? , the input resistance of the full-wave rectifier. although there is a tendency to lower the time constant for the expander to reduce noise at the ends of words, the designer must keep in mind that such cuts reduce the amount of smoothing and thus raise the risk of distortion. 10. compressor's summing amplifier achieving a dc gain of 1 and an ac gain of infinity from the compressor's summing amplifier requires suppressing ac feedback with the capacitor on pin 3. the cutoff frequency is determined by the product of its capacitance and the internal resistance of 22.5 k ? . 11. standby function the chip's standby function does not produce a total shutdown of all circuits. it disables the audio signal processing block, but leaves the waveform shaper block for the receiving signal operating. for this reason, it is not possible to connect the battery directly to the power supply pin (pin 15). there must be an intervening transistor switch for an intermittent power supply. 12. control modes no. 6627-7/16 LA8638NV pin 17 pin 18 sub-cnt1 sub-cnt2 mode open/high open/high standby open/high low receiver muted low open/high normal receiver output levels low low low receiver output levels pin number pin name open/high low pin 19 btl-cnt btl amplifier disabled btl amplifier enabled pin 20 tx-mute transmitter muted transmitter enabled pin 22 tx-lvl-cnt normal transmitter output levels high transmitter output levels note: the standby mode overrides all other mode settings.
no. 6627-8/16 LA8638NV 4.2 4.0 3.8 3.6 3.4 3.2 3.0 2.8 2.6 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 5 4 3 2 1 0 1020304050 4 5 6 7 8 9 10 11 13 12 0 0.5 1.0 1.5 2.0 3.0 2.5 v cc = 2.4v v cc = 2.4v v cc = 2.4v graph 1. splatter filter cutoff frequency vs. external resistance graph 2. transmitter gain change level vs. external resistance graph 3. receiver gain change level vs. external resistance external resistance (k ? ) cutoff frequency (khz) level difference (db) level difference (db) external resistance (k ? ) external resistance (k ? )
pin number pin name pin voltage equivalent circuit description no. 6627-9/16 LA8638NV pin descriptions 1 gnd ground for all circuits except btl amplifier 2 1/2 v cc v cc /2 resistance voltage divider pin 29 v ref v cc /2 reference voltage for all circuits except receiver block 2 29 + v cc 100k ? 100k ? a13523 3 cmp-nf v cc /2 ac feedback control for compressor's summing amplifier dc gain: 1 ac gain: infinite v ref in v cc 45k ? 22.5k ? 22.5k ? 3 + a13524 4 dt-v ref 1.25 v reference voltage for receiver block. this supplies the bias voltage for pin 5. 4 + v ref 2 regurator a13525 5 rx-in 1.25 v power supply filter buffer input 6 rx-fil-out 1.25 v filter buffer output 5 6 + 500 ? 100k ? to dtsh in a13526 7 exp-in v cc /2 expander input. voltage-current converter input. full-wave rectifier input. 8 exp-rct indeterminate (when there is no signal) full-wave rectifier output for expander block (ac smoothing) 7 8 v ref v ref v cc 15k ? 30k ? 15k ? + a13527 9 500 ? 500 ? bias circuit vca att circuit a13528 9 rx-att-adj 0.03 v pin for setting attenuation for receiver output level switching v ref in 60k ? 10 + a13529 10 rx-out v cc /2 receiver block output continued on next page.
no. 6627-10/16 LA8638NV continued from preceding page. pin number pin name pin voltage equivalent circuit description 12 btl-gnd ground for btl amplifier 11 btl-in v cc /2 btl amplifier input 13 btl-out1 v cc /2 btl amplifier reversed output 14 btl-out2 v cc /2 btl amplifier non-reversed output 13 11 14 v ref v cc + + a13530 20k ? 20k ? 15 v cc power supply pin 16 fsk-out indeterminate (when there is no signal) comparator output (open collector output) a13531 in from 6pin 16 + v ref 2 17 sub-cnt1 v cc internal operating mode control pins. all four pins have identical structures. 18 sub-cnt2 v cc 20 tx-mute v cc 22 tx-lvl-cnt v cc v cc a13532 100k ? 100k ? 70k ? 15k ? 17 20 18 22 19 btl-cnt v cc + 0.65 2 btl amplifier operation control pins 19 v cc a13533 100k ? 100k ? btl amp 21 tx-data-in v cc /1.6 transmitter data input 21 a13534 v ref 3 lpf 40k ? + idc 50k ? 23 tx-out v cc /1.6 transmitter output 23 a13535 v ref 3 20k ? + lpf 30k ? 24 freq-adj 0.01 v pin for setting cutoff frequency of splatter filter 24 a13536 bias circuit lpf continued on next page.
no. 6627-11/16 LA8638NV continued from preceding page. pin number pin name pin voltage equivalent circuit description 25 cmp-rct full-wave rectifier output for compressor block (ac smoothing) indeterminate (when there is no signal) 25 v ref in v cc 15k ? 15k ? + a13537 26 mic-out microphone amplifier output v cc /2 27 26 v cc to cmp in 500 ? 28 500 ? + a13538 30 tx-lvl-adj pin for setting amplification for transmitter output level switching v cc /2 in 30 29k ? 20k ? + a13539 27 mic-in2 microphone amplifier negative input v cc /2 28 mic-in1 microphone amplifier positive input v cc /2 power supply 10 0 20 0 20 40 60 80 100 160 120 140 100 80 40 60 0 20 50 60 70 80 90 100 110 10 20 30 40 50 60 0.1 23 57 1.0 23 57 10 23 5 60 50 40 30 10 20 0 7 5 6 4 3 2 1 0 13 26 5 47 v cc = 2.4v f in = 1khz v cc = 2.4v 1khz - bpf no signal i/o characteristics crosstalk characteristics input level, v in dbv splatter filter frequency characteristics input level, v in dbv current drain . v cc frequency, f khz power supply voltage, v cc v output level, v o dbv response db crosstalk level, ct dbv current drain, i cc ma vcc = 2.4 v; resistance at pin 24 = 4.3 k ? tx-out (pin 23) tx-dt-out (pin 23) rx-out (pin 10) rx tx (pin 23) tx-mute (pin 23) tx rx (pin 10) rx-mute (pin 10) btl on btl off standby
no. 6627-12/16 LA8638NV 8 6 7 5 4 3 13 26 5 47 2 0 1 1 2 13 26 5 47 3 1 2 0 13 26 5 47 14 6 10 12 4 8 2 13 26 5 47 80 100 90 85 105 95 110 13 26 5 47 60 100 80 70 110 90 13 26 5 47 50 90 70 60 100 80 1 3 2 6 5 47 r l =2k ? v in = 10dbv 1khz bpf 1khz - bpf 6 10 8 12 14 16 18 20 13 26 5 47 limit level (1khz-bpf) rx-change tx-change expandor < v in = 30db compressor < v in = 40db thd=3% thd=1% tx-mute (v in = 30dbv) rx > tx (rx-v in = 10dbv) output level v cc gain change level difference v cc power supply voltage, v cc v compander gain error v cc power supply voltage, v cc v output distortion v cc power supply voltage, v cc v power supply voltage, v cc v btl power amplifier maximum output voltage v cc receiver muting attenuation v cc power supply voltage, v cc v receiver (tx rx) crosstalk v cc power supply voltage, v cc v transmitter crosstalk v cc power supply voltage, v cc v power supply voltage, v cc v output level, v o dbv gain change level difference, gc db compander gain error, ge db total harmonic distortion, thd % maximum output voltage, v o vp-p muting level dbv crosstalk level, ct dbv crosstalk level, ct dbv tx (pin 23) v in = 60 dbv rx (pin 10) v in = 20 dbv rx (pin 10) v in = 20 dbv tx (pin 23) v in = 60 dbv tx-data (pin 23) v in = 20 dbv switches gain between high and low levels. resistance at pin 9: 1 k ? ; resistance between pins 30 and 29: 4.7 k ? pins 13 and 14 pin 10 pin 13 pin 10 pin 14 1 khz-bpf tx-in(28 pin): vin = 40dbv
no. 6627-13/16 LA8638NV 4.0 3.2 3.6 3.8 3.0 3.4 13 26 5 47 18 14 12 20 16 13 26 5 47 2 6 0 4 3 1 5 40 0 20 60 40 20 80 14 18 10 12 16 8 40 0 20 60 40 20 80 5 3 7 6 4 8 40 0 20 60 40 20 80 48 56 44 52 50 46 54 13 26 5 47 34 38 30 32 36 28 13 26 5 47 40 90 70 60 50 100 80 13 26 5 47 din audio filter v in = 20dbv v in = 30dbv no signal limiter level (1k-bpf) rx-change tx-change output noise level v cc splatter filter cutoff frequency v cc power supply voltage, v cc v splatter filter attenuation v cc power supply voltage, v cc v data shaper duty cycle v cc power supply voltage, v cc v data shaper dead zone v cc power supply voltage, v cc v current drain ta power supply voltage, v cc v output level ta ambient temperature, ta c gain change level difference ta ambient temperature, ta c ambient temperature, ta c output level, v o dbv gain change level difference, gc db current drain, i cc ma minimum input level dbv duty cycle % cutoff frequency khz output noise level dbv attenuation db tx (pin 23) tx-mute (pin 23) rx (pin 10) rx-mute (pin 10) fin = 5 k or 1 khz; resistance at pin 24 = 4.3 k ? att. = 3 db down; resistance at pin 24 = 4.3 k ? btl on btl off standby rx (pin 10) v in = 20 dbv tx (pin 23) v in = 60 dbv tx-data (pin 23) v in = 20 dbv switches gain between high and low levels. resistance at pin 9: 1 k ? ; resistance between pins 30 and 29: 4.7 k ?
no. 6627-14/16 LA8638NV 0.5 0.1 0.7 0.3 0.4 0.6 0.2 40 0 20 60 40 20 80 0.5 0.8 0.7 0.3 0.4 0.6 0.2 40 0 20 60 40 20 80 4.5 3.5 4.0 5.0 3.0 40 0 20 60 40 20 80 4 5 6 7 40 0 20 60 40 20 80 90 100 95 85 105 40 0 20 60 40 20 80 70 90 80 75 95 85 100 40 0 20 60 40 20 80 80 60 50 90 70 100 40 0 20 60 40 20 80 btl-in:v in = 5dbv (blt gain > 0db) 1khz-bpf v in = 10dbv btl-in:v in = 5dbv (blt gain > 0db) tx-in:v in = 40dbv 1khz -bpf 1khz- bpf 0 2 2 1 1 40 0 20 60 40 20 80 expandor < v in = 30db compressor < v in = 40db rx > tx (rx-v in = 10dbv) tx-mute (v in = 30dbv) compander gain error temperature output distortion temperature btl distortion temperature btl power amplifier maximum output voltage temperature ambient temperature, ta c ambient temperature, ta c ambient temperature, ta c btl output level temperature ambient temperature, ta c receiver muting attenuation temperature ambient temperature, ta c receiver (tx rx) crosstalk temperature ambient temperature, ta c transmitter crosstalk temperature ambient temperature, ta c ambient temperature, ta c crosstalk level, ct dbv crosstalk level, ct dbv muting level dbv output level, v o dbv total harmonic distortion, thd % maximum output voltage, v o v pp total harmonic distortion, thd % compander gain error, ge db pin 13 pin 10 pin 14 pin 13 pin 14 pin 14 pin 13 pin 10 pin 13 pin 14 tx (pin 23) v{in} = 60 dbv rx (pin 10) v{in} = 20 dbv thd output = 1 %
no. 6627-15/16 LA8638NV 3.4 3.2 3.3 3.5 3.1 40 0 20 60 40 20 80 12 15 13 14 11 16 40 0 20 60 40 20 80 6 12 8 10 14 40 0 20 60 40 20 80 54 48 52 50 46 40 0 20 60 40 20 80 15 17 16 18 40 0 20 60 40 20 80 32 33 34 37 35 36 38 40 0 20 60 40 20 80 90 70 60 50 100 80 40 0 20 60 40 20 80 din audio filter v in = 20dbv v in = 30dbv output noise level temperature splatter filter cutoff frequency temperature ambient temperature, ta c splatter filter attenuation temperature ambient temperature, ta c receiver maximum input level temperature ambient temperature, ta c transmitter maximum input level temperature ambient temperature, ta c data shaper duty ratio temperature ambient temperature, ta c ambient temperature, ta c data shaper dead zone temperature ambient temperature, ta c minimum input level dbv duty ratio % maximum input level at pin 21 dbv maximum inputlevel at pin 5 dbv cutoff frequency khz attenuation db output noise level dbv thd = 1% for output from pin 23 tx (pin 23) tx-mute (pin 23) rx (pin 10) att. = 3 db down; resistance at pin 24 = 4.3 k ? thd = 1% for output from pin 10 rx-mute (pin 10)
ps no. 6627-16/16 LA8638NV this catalog provides information as of november, 2003. specifications and information herein are subject to change without notice. specifications of any and all sanyo 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. sanyo electric co., ltd. strives to supply high-quality high-reliability products. however, any and all semiconductor products fail with some probability. it is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage 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. in the event that any or all sanyo products (including technical data, services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining 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 permission of sanyo electric co., ltd. any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. when designing equipment, refer to the delivery specification for the sanyo product that you intend to use. information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. sanyo believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties.

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