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. 91008 ms pc/31208 ms 20070626-s00009 no.a1145-1/8 LA7796T overview LA7796T is an agc amplifier. it is ideally suited for use with digita l catv, cable modem receiver and ip telephony receiver. functions ? if agc control ? if agc amplifier ? if step gain controlled amplifier ? driver amplifier specifications maximum ratings at ta = 25 c parameter symbol conditions ratings unit maximum supply voltage v cc max pin 1 7.0 v circuit voltages v max pin 4 , pin 5 v cc op v i6 pin 6 sink current 2 ma circuit current i7 pin 7 sink current 2 ma allowable power dissipation pd max ta 85 c 220 mw operating temperature range topr -20 to 85 c storage temperature range tstg -55 to 150 c specified board: 20.0mm 10.0mm 0.8mm, glass epoxy board. monolithic linear ic for digital catv/cable modem receiver agc amplifier orderin g numbe r : ena1145a
LA7796T no.a1145-2/8 recommended operating conditions at ta = 25 c parameter symbol conditions ratings unit recommended supply voltage v cc pin 1 5.0 v operating supply voltage range v cc op pin 1 4.5 to 5.5 v electrical characteristics at ta = 25 c, v cc = 5v ratings parameter symbol pin no. conditions test circuit min typ max unit circuit current i total 1 no signal 1 25 30 35 ma if input frequency range f(in) 2,3 fc : -3db 1 30 100 mhz v4 = 3.0v, f = 45mhz pin5: v cc 2 3 db v4 = 3.0v, f = 45mhz pin5: gnd 2 4 db noise figure nf 6,7 v4 = 3.0v, f = 45mhz pin5: open 2 5 db intermodulation im3 6/2,3 7/2,3 v4 = 3.0v, f1 = 44mhz, f2 = 45mhz, output = 104db each 1 50 db g (agc1) 6/2,3 7/2,3 v4 = 3.0v, f = 45mhz pin5: v cc 1 45.5 48 50.5 db g (agc2) 6/2,3 7/2,3 v4 = 3.0v, f = 45mhz pin5: gnd 1 40.5 43 45.5 db total amplifier gain g (agc3) 6/2,3 7/2,3 v4 = 3.0v, f = 45mhz pin5: open 1 37.5 40 42.5 db agc range gr 6/2,3 7/2,3 if output level < 1db f = 45mhz 1 40 db if output level v o (if)1 6,7 output level, f = 45mhz 1 1.0 vp-p agc control max. voltage v 4h 4 gain max. 1 2.5 3 v agc control min. voltage v 4l 4 gain min. 1 0 0.5 v input impedance zin 2,3 v4 = 0v, f = 45mhz 3 1//6.5 k //pf package dimensions unit : mm (typ) 3245b sanyo : msop8(150mil) 3.0 1.1max 3.0 0.5 4.9 12 8 0.25 0.65 (0.53) (0.85) 0.125 0.08
LA7796T no.a1145-3/8 block diagram 1 2 3 4 8 7 6 5 agc v cc gnd if input1 if input2 agc control driver output1 driver output2 gain control switch (caution) be sure to connect pin 5 to either v cc or gnd or keep it open. test circuit1 1 2 3 4 8 7 6 5 agc spectrum analyzer 1000pf 1000pf 1000pf v cc sw output voltage is divided by 50 / (200+50) 200 200 51 1000pf agc voltage 1000pf 1000pf 1000pf toko 617db-1010 b4f vin zo=50 v cc test circuit2 1 2 3 4 8 7 6 5 agc noise figure analyzer: sence 1000pf 1000pf 1000pf v cc sw 200 200 51 1000pf agc voltage 1000pf 1000pf 1000pf toko 617db-1010 b4f v cc noise figure analyzer: source test circuit3 1 2 3 4 8 7 6 5 agc 1000pf 1000pf 1000pf v cc sw 200 200 51 1000pf agc voltage 1000pf 1000pf 1000pf v cc network analyzer 51 51
LA7796T no.a1145-4/8 pin function pin no. function equivalent circuit 1 v cc 2 3 if input. 2 3 v cc bias 4 agc control. 4 v cc 10k 5 gain control switch. 5 v cc 10k 35k 35k 6 7 driver output. 6 7 v cc 20 20 8.0ma 8.0m a 8 gnd
LA7796T no.a1145-5/8 the vertical axis (output/tone) on this graph shows the values displayed by the spectrum analyzer for circuit 1. the actual output power for the corresponding pins is given by the following formula. {output power [dbm]} = {displayed value [dbm]} + 10 ? log (250 /50 ) gain -- vagc characteristic ? 40 20 30 40 50 10 0 ? 30 ? 20 ? 10 60 0 2.5 2.0 1.5 1.0 0.5 3.0 3.5 4.0 vagc?v voltage gain ? db v cc = 5.0v f = 45mhz circuit 1 input/tone ? dbm intermodulation characteristic ? 100 ? 90 ? 80 ? 70 ? 60 ? 50 ? 40 ? 30 ? 20 ? 10 ? 90 ? 80 ? 70 ? 60 ? 50 ? 40 ? 30 ? 20 ? 10 0 ? 90 ? 80 ? 70 ? 60 ? 50 ? 40 ? 30 ? 20 ? 10 0 0 1.2 1.5 1.8 2.1 2.4 2.7 0.9 0.6 0.3 3 ? 70 ? 45 ? 50 ? 55 ? 60 ? 65 ? 40 ? 35 ? 30 ? 25 ? 20 ? 15 ? 45 ? 50 ? 55 ? 60 ? 65 ? 40 ? 35 ? 30 ? 25 ? 20 ? 15 ? 45 ? 50 ? 55 ? 60 ? 65 ? 40 ? 35 ? 30 ? 25 ? 20 ? 15 output/tone ? dbm vagc?v 0 1.2 1.5 1.8 2.1 2.4 2.7 0.9 0.6 0.3 3 vagc?v 0 1.2 1.5 1.8 2.1 2.4 2.7 0.9 0.6 0.3 3 vagc?v gain -- frequency characteristic 0 20 30 40 50 10 60 10 60 50 40 30 20 70 80 90 100 frequency ? mhz voltage gain ? db v cc = 5.0v, vagc = 2.5v circuit 1 v cc = 5.0v, pin5 : open f = 44mhz, 45mhz, circuit 1 v cc = 5.0v, pin5 : v cc f = 44mhz, 45mhz, circuit 1 v cc = 5.0v, pin5 : gnd f = 44mhz, 45mhz, circuit 1 noise figure -- gain characteristic 0 15 20 25 30 10 5 35 035 30 25 20 15 40 45 50 55 voltage gain ? db noise figure ? db v cc = 5.0v, f = 45mhz circuit 2 input/tone ? dbm intermodulation characteristic ? 100 0 10 output/tone ? dbm input/tone ? dbm intermodulation characteristic ? 100 ? 70 output/tone ? dbm pin5 : v cc pin5 : open pin5 : gnd pin5 : v cc output output vagc vagc im3 output output vagc va g c im3 output output vagc vagc im3 pin5 : open pin5 : gnd pin5 : v cc pin5 : open pin5 : gnd
LA7796T no.a1145-6/8 ? 40 10 0 20 30 40 50 ? 10 ? 20 ? 30 10 0 20 30 40 50 ? 10 ? 20 ? 30 10 0 20 30 40 50 ? 10 ? 20 ? 30 60 0 2.0 2.5 1.5 1.0 0.5 3.5 3.0 2.0 2.5 1.5 1.0 0.5 3.5 3.0 2.0 2.5 1.5 1.0 0.5 3.5 3.0 4.0 noise figure -- gain characteristic 0 35 10 55 voltage gain ? db noise figure ? db noise figure -- gain characteristic 0 20 25 30 15 10 5 20 25 30 15 10 5 20 25 30 15 10 5 35 10 35 30 25 20 15 40 45 50 35 30 25 20 15 40 45 50 35 30 25 20 15 40 45 50 55 voltage gain ? db noise figure ? db v cc = 5.0v pin5 : open, f = 45mhz circuit 2 v cc = 5.0v pin5 : v cc , f = 45mhz circuit 2 v cc = 5.0v pin5 : gnd, f = 45mhz circuit 2 noise figure -- gain characteristic 0 35 10 55 voltage gain ? db noise figure ? db gain -- vagc characteristic vagc?v voltage gain ? db ? 40 60 0 4.0 gain -- vagc characteristic vagc?v voltage gain ? db ? 40 60 0 4.0 gain -- vagc characteristic va g c ? v voltage gain ? db v cc = 5.0v pin5 : open, f = 45mhz circuit 1 v cc = 5.0v pin5 : v cc , f = 45mhz circuit 1 v cc = 5.0v pin5 : gnd, f = 45mhz circuit 1 -20 c 25 c 85 c -20 c 25 c 85 c -20 c 25 c 85 c -20 c 25 c 85 c -20 c 25 c 85 c -20 c 25 c 85 c
LA7796T no.a1145-7/8 the vertical axis (output/tone) on this graph shows the values displayed by the spectrum analyzer for circuit 1. the actual output power for the corresponding pins is given by the following formula. {output power [dbm]} = {displayed value [dbm]} + 10 ? log (250 /50 ) 0 40 50 30 20 10 40 50 30 20 10 40 50 30 20 10 60 10 50 40 30 20 90 80 70 60 50 40 30 20 90 80 70 60 50 40 30 20 90 80 70 60 100 intermodulation characteristic ? 100 0 ? 70 ? 15 input/tone ? dbm output/tone ? dbm output im3 intermodulation characteristic ? 100 ? 60 ? 50 ? 40 ? 30 ? 20 ? 10 ? 70 ? 80 ? 90 ? 60 ? 50 ? 40 ? 30 ? 20 ? 10 ? 70 ? 80 ? 90 ? 60 ? 50 ? 40 ? 30 ? 20 ? 10 ? 70 ? 80 ? 90 0 ? 70 ? 45 ? 50 ? 55 ? 60 ? 65 ? 40 ? 35 ? 30 ? 25 ? 20 ? 45 ? 50 ? 55 ? 60 ? 65 ? 40 ? 35 ? 30 ? 25 ? 20 ? 45 ? 50 ? 55 ? 60 ? 65 ? 40 ? 35 ? 30 ? 25 ? 20 ? 15 input/tone ? dbm output/tone ? dbm v cc = 5.0v, pin5 : open f = 44mhz, 45mhz, circuit 1 intermodulation characteristic ? 100 0 ? 70 ? 15 input/tone ? dbm output/tone ? dbm v cc = 5.5v, pin5 : v cc f = 44mhz, 45mhz, circuit 1 gain -- frequency characteristic frequency ? mhz voltage gain ? db v cc = 5.0v pin5 : open vagc = 2.5v circuit 1 v cc = 5.0v pin5 : v cc vagc = 2.5v circuit 1 v cc = 5.0v pin5 : gnd vagc = 2.5v circuit 1 0 60 10 100 gain -- frequency characteristic frequency ? mhz voltage gain ? db 0 60 10 100 gain -- frequency characteristic frequency ? mhz voltage gain ? db -20 c 25 c 85 c -20 c 25 c 85 c -20 c 25 c 85 c -20 c 25 c 85 c -20 c 25 c 85 c output im3 -20 c 25 c 85 c -20 c 25 c 85 c output im3 v cc = 5.0v, pin5 : gnd f = 44mhz, 45mhz, circuit 1 -20 c 25 c 85 c -20 c 25 c 85 c
LA7796T ps no.a1145-8/8 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 september, 2008. specifications and information herein are subject to change without notice.
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