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60408 ms pc/n1506 ms pc b8-2443 no.5333-1/11 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. LA7473V overview the LA7473V is a microphone amplifier ic for video cameras that supports stereo audio recording and features low power and the ability to operate from a 3v supply voltage. it achieves high audio quality by providing equalization circuits to improve the frequency characteristics of the microphone and a le ft/right mixing circuit to improve the spatial presence of the stereo image. features ? low power (for a 3.3v supply voltage : 18mw, for 4.75v : 28mw) ? low-voltage operation (2.7v minimum) ? low noise ? achieves high audio quality - provides built-in equalization circuits to impr ove the frequency character istics of the microphone - provides a left/right mixing circuit to impr ove the spatial presence of the stereo image functions ? two microphone amplifier channels ? selector switch for internal and external microphones ? high-pass filter (with bypass function) ? built-in microphone power supply ? ripple filter ? external/internal microphone discrimination output ? mono/stereo discrimination output monolithic linear ic for video camera stereo microphone amplifier orderin g numbe r : en5333a
LA7473V no.5333-2/11 specifications maximum ratings at ta = 25 c parameter symbol conditions ratings unit maximum supply voltage v cc 7.0 v allowable power dissipation pd max ta 65 c 110 mv operating temperature topr -10 to +65 c storage temperature tstg -55 to +150 c operating conditions at ta = 25 c parameter symbol conditions ratings unit recommended supply voltage v cc 3.3 to 4.75 v recommended operating supply voltage range v cc op 2.7 to 3.6, 4.5 to 5.5 v electrical characteristics at ta = 25 c, v cc = 3.3v, f = 1khz, r l = 10k ratings parameter symbol conditions min typ max unit i cc 1 ext mic in, l/rc h 2.7 3.9 5.1 ma current drain i cc 2 int mic in, l/rc h 3.8 5.4 7.0 ma vg1 ext mic in, l/rch : v o = -10dbs 27.5 28 28.5 db voltage gain vg2 int mic in, l/rch : v o = -10dbs 21 21.5 22 db total harmonic distortion thd ext mic in, int mic in, v o = -10dbs, l/rch 0.05 0.2 % maximum output voltage v om ext mic in, int mic in, thd = 1%, l/rch 0 dbs v no 1 ext mic in, l/rch, rg = 1k , jis-a 22 32 vrms output noise voltage v no 2 int mic in, l/rch, rg = 1k , jis-a 16 24 vrms input switching crosstalk sw cr int mic in ext mic in (rg = 1k ) f = 10khz, l/rch 70 80 db inter-channel crosstalk ch cr ext/int mic, lch rch, rch lch, f = 10khz 45 51 db internal microphone power supply output voltage v inm the pin 31 dc level with a 30k load 2.25 2.4 2.55 v ctl h high level, the pin 1/ pin 30 dc voltage 1.3 v cc v input switching control voltage ctl l low level, the pin 1/pin 30 dc voltage -0.3 +0.7 v v ch high level, pin 15/pin 16 2.5 v mic mono and ext/ int output level v cl low level, pin 15/pin 16 0.4 v z in 1 ext mic in, l/rch 56 70 84 k z in 2 ixt mic in, l/rch 56 70 84 k input impedance z in 3 pin 1/pin 30 100 k output impedance z o pin 13/pin 18 130 ripple rejection ratio v r output level at f = 100hz and v in = -20dbs -50 dbs inrush current i ct pin 1/pin 30, with an applied voltage of 3.3v 47.5 a power supply mode switching voltage v cclh the v cc (pin 7) switching voltages: mode 1 (3.3v typical)/mode 2 (4.75v typical) 3.65 4.45 v
LA7473V no.5333-3/11 electrical characteristics at ta = 25 c, v cc = 4.75v, f = 1khz, r l = 10k ratings parameter symbol conditions min typ max unit i cc 1 ext mic in, l/rc h 3.0 4.5 5.9 ma current drain * i cc 2 int mic in, l/rc h 4.1 5.8 7.5 ma vg1 ext mic in, l/rch : v o = -10dbs 27.5 28 28.5 db voltage gain vg2 int mic in, l/rch : v o = -10dbs 21 21.5 22 db total harmonic distortion thd ext mic in, int mic in, v o = -10dbs, l/rch 0.05 0.2 % maximum output voltage v om ext mic in, int mic in, thd = 1%, l/rch 0 dbs v no 1 ext mic in, l/rch, rg = 1k , jis-a 22 32 vrms output noise voltage v no 2 int mic in, l/rch, rg = 1k , jis-a 16 24 vrms input switching crosstalk sw cr int mic in ext mic in (rg = 1k ) f = 10khz, l/rch 70 80 db inter-channel crosstalk ch cr ext/int mic, lch rch, rch lch, f = 10khz 45 51 db internal microphone power supply output voltage * v inm the pin 31 dc level with a 30k load 2.15 2.3 2.45 v ctl h high level, the pin 1/ pin 30 dc voltage 1.3 v cc v input switching control voltage ctl l low level, the pin 1/pin 30 dc voltage -0.3 +0.7 v v ch high level, pin 15/pin 16 3.8 v mic mono and ext/ int output level * v cl low level, pin 15/pin 16 0.4 v z in 1 ext mic in, l/rch 56 70 84 k z in 2 ixt mic in, l/rch 56 70 84 k input impedance z in 3 pin 1/pin 30 100 k output impedance z o pin 13/pin 18 130 ripple rejection ratio v r output level at f = 100hz and v in = -20dbs -50 dbs inrush current * i ct pin 1/pin 30, with an applied voltage of 4.75v 47.5 a note * : items for which the ratings differ in 3.3v mode. package dimensions unit : mm (typ) 3191b sanyo : ssop30(275mil) 9.75 5.6 7.6 0.22 0.65 (0.33) 1 15 16 30 0.5 0.15 1.5max 0.1 (1.3)
LA7473V no.5333-4/11 block diagram and test circuit 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 + + - + - + - + - + - + - + - + - + + a sw3 0.1 f 1k v in 3 b - + - a a3 + a sw1 0.1 f 1k v in 1 b + a sw4 v26 v25 0.1 f 0.33 f 0.33 f 10 f 820 0.33 f 39 820 1k 0.033 f 0.033 f 39k 1 f 10k 1 f 10k 470k 47k 4.7k 33k 33k 27k 27k v o 2 v cc v16 turn on at v cc = 4.5 to 5.5v 1000pf v in 4 b 470k 47k v cc ext ext int int on hpf on hpf off mic v cc off v30 a + a1 sw5 v cc a a3 v1 v o 1 v14 4.7k 0.033 f v15 0.47 f + a sw2 0.1 f 1k v in 2 b 0.47 f + v in 5 bias ripple filter
LA7473V no.5333-5/11 sample application circuit ext mic in int mic l-ch int mic l-ch + 0.01 f 0.047 f 0.01 f 0.047 f 0.01 f 10 f 0.01 f 0.01 f 2.2k 2.2k 1mh 1mh 1000pf 1000pf 0.033 f 39k 820 0.033 f 0.033 f 39k 4.7k 6.8k 6.8k 33k 33k 27k 27k 1000pf r-ch out hpf on gnd r-ch out int/ext mic mono l-ch out v cc mic mono l-ch out 4.7k 12k 3.9k 0.033 f 0.068 f 0.047 f 0.47 f 0.1 f 820 3.9k 220k 0.068 f 0.047 f 0.47 f 0.1 f 0.01 f 0.01 f 12k control 30pin h h l ext/int ext/int ext int ext l 1pin mic mono (15pin) (16pin) mic h l h l ext int ext ext st st mono st ext 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 + - + - + - + - + - + - + - + - + - + - ext ext int int on hpf on hpf off mic v cc off ripple filter 1mh bias
LA7473V no.5333-6/11 pin functions pin no. pin name dc voltage description equivalent circuit 1 30 input select ctl-1 input select ctl-2 internal/external switching stereo/mono discrimination control 30 1 v cc 50k 100k 2 29 ext in-l ext in-r 1.45v (v cc = 3.3v) 2.2v (v cc = 4.75v) external microphone input input impedance : 70k v cc 80 a 70k bias 2 29 3 28 ext amp nfb1-l ext amp nfb1-r 1.45v (v cc = 3.3v) 2.2v (v cc = 4.75v) external amplifier nfb 100k ext amp out 3 28 v cc 4 27 ext amp nfb2-l ext amp nfb2-r 0.1v (v cc = 3.3v) 0.15v (v cc = 4.75v) external amplifier output attenuation output 4.3k 333 100k 4 27 3 28 v cc 5 ripple filter 2.4v (v cc = 3.3v) 2.3v (v cc = 4.75v) used to exclude ripple from internal circuits. ripple is removed with a filter consisting of an external capacitor and 75k resistor. 75k 5 continued on next page.
LA7473V no.5333-7/11 continued from preceding page. pin no. pin name dc voltage description equivalent circuit 6 24 int in-l int in-r 1.45v (v cc = 3.3v) 2.2v (v cc = 4.75v) internal microphone input input impedance : 70k v cc 65 a 70k bias 6 24 7 v cc v cc mode 1 : 3.3v typical (2.7v to 3.6v) mode 2 : 4.75v typical (4.5v to 5.5v) * : this ic cannot be used in the range 3.6 to 4.5v. 8 23 int amp nfb-l int amp nfb-r 1.45v (v cc = 3.3v) 2.2v (v cc = 4.75v) internal amplifier nfb 100k int amp out 3 23 v cc 9 21 int amp out-l int amp out-r 1.45v (v cc = 3.3v) 2.2v (v cc = 4.75v) internal amplifier output these are low-impedance outputs. 8 23 9 21 505 a 10k 10k v cc 10 20 mix buff in-r mix buff in-l 1.45v (v cc = 3.3v) 2.2v (v cc = 4.75v) mixer buffer input these are high-impedance inputs. v cc 32 a 10 20 11 19 mix amp out-l mix amp out-r 1.45v (v cc = 3.3v) 2.2v (v cc = 4.75v) mixer amplifier output these are low-impedance outputs. 11 19 500 10k 10k v cc continued on next page.
LA7473V no.5333-8/11 continued from preceding page. pin no. pin name dc voltage description equivalent circuit 12 18 hpf in-l hpf in-r 1.45v (v cc = 3.3v) 2.2v (v cc = 4.75v) amplifier input for high-pass filter these are high-impedance inputs. v cc 12 18 500k 13 17 out-l out-r 1.45v (v cc = 3.3v) 2.2v (v cc = 4.75v) external/internal mode 5.5db amplifier outputs v cc 210 a 13 17 10k bias 9k 14 bias 1.45v (v cc = 3.3v) 2.2v (v cc = 4.75v) reference voltage 14 v cc 15 mic mono goes low only when the external microphone is monaural. 15 v cc 16 ext/ int this pin is high in external mode and low in internal mode. 16 40k v cc high level at v cc = 4.75v 22 gnd 0 continued on next page.
LA7473V no.5333-9/11 continued from preceding page. pin no. pin name dc voltage description equivalent circuit 25 hpf on high-pass filter on/off control 10k 100k 25 1k v cc 26 mic v cc 2.4v (v cc = 3.3v) 2.3v (v cc = 4.75v) internal microphone power supply 26 20k v cc 36k 2k ? 20 ? 15 ? 10 ? 5 10 5 0 20 15 25 37 100 25 37 1k 25 37 10k 2 frequency, f ? hz gain ? db hpf-off hpf-on frequency characteristics in mixer mode (characteristics measured in the application circuit shown in the figure)
LA7473V no.5333-10/11 parameter measurement switch settings parameter symbol sw1 sw2 sw3 sw4 sw5 v1 v30 v25 test point current drain 1 i cc 1 b b b b off l l h a1 current drain 2 i cc 2 b b b b off l h h a1 voltage gain 1 vg1-1 vg1-2 a b b b b a b b off off l l l l h h v o 1 v o 2 voltage gain 2 vg2-1 vg2-2 b b a b b b b a off off l l h h h h v o 1 v o 2 total harmonic distortion thd1 thd2 thd3 thd4 a b b b b b a b b a b b b b b a off off off off l l l l l l h h h h h h v o 1 v o 2 v o 1 v o 2 maximum output voltage v om 1 v om 2 v om 3 v om 4 a b b b b b a b b a b b b b b a off off off off l l l l l l h h h h h h v o 1 v o 2 v o 1 v o 2 output noise voltage 1 v no 1-1 v no 1-2 a b b b b b b b off off l l l l h h v o 1 v o 2 output noise voltage 2 v no 2-1 v no 2-2 b b a b b b b a off off l l h h h h v o 1 v o 2 input switching crosstalk sw cr 1 sw cr 2 b b a b b b b a off off l l l l h h v o 1 v o 2 inter-channel crosstalk ch cr 1 ch cr 2 ch cr 3 ch cr 4 a b b b b b a b b a b b b b b a off off off off l l l l l l h h h h h h v o 2 v o 1 v o 2 v o 1 internal microphone power supply output voltage v inm b b b b off l h h v26 mic mono and ext/ int output level v ch 1 v cl 1 v ch 2 v cl 2 b b b b b b b b b b b b b b b b off off off off l h l l l l l h h h h h v15 v15 v16 v16 ripple rejection ratio v r 1 v r 2 a b b a b b b b on on l l l h h h v o 1 v o 1 inrush current i ct 1 i ct 1 b b b b b b b b off off h l l h h h a2 a3
LA7473V ps no.5333-11/11 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 june, 2008. specifications and information herein are subject to change without notice.

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