Ordering number : EN8338A LA8128T Monolithic Linear IC AGC Amplifier with Step Gain Control Overview The LA8128T is a video amplifier that includes an integrated A/D converter driver. It is optimal for use in reception side devices in systems that transfer QPSK, QAM, and other digital data. Functions • Differential input amplifier • Driver amplifier Applications • Digital CATV, terrestrial broadcast TV • Cable modem receivers • IP Telephone receivers Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply rating Circuit current Allowable power dissipation Symbol VCC max Conditions Pin 1 Rated value Unit 7.0 I6 Pin 6 inflow current 2 I7 Pin 7 inflow current 2 Pd max Ta ≤ 85°C 220* V mA mW Operating temperature Topr -20 to +85 °C Storage temperature Tstg -55 to +150 °C * 20.0 × 10.0 × 0.8 mm Paper phenolic circuit board 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 (home appliances, AV equipment, communication device, office equipment, industrial equipment etc.). 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 applications 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 no consultation or inquiry before the intended use, our customer shall be solely responsible for the use. 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. 53007 MS IM / N2206 / 62405 MS OT B8-8627 No.8338-1/6 LA8128T Recommended Operating Conditions at Ta = 25°C Parameter Symbol Conditions Rated value Unit Recommended supply voltage VCC Pin 1 5.0 V Operating supply voltage range VCC op Pin 1 4.5 to 5. 5 V Electrical Characteristics AC Characteristics at Ta = 25°C, VCC = 5.0 V Parameter Symbol Rated value Conditions Min. Typ. Unit Max. Circuit current ICC No signal *1 18 23 28 mA Input frequency range f(in) fc : -3 dB *1 30 - 100 MHz Noise figure NF f = 45 MHz *2 - 7 - dB Voltage gain GV f = 45 MHz *1 18.5 21 23.5 dB Output 3rd order intercept OIP3 Single-ended output *1 123 126 - dBµV *1 113 116 - dBµV *3 - 1.2 // 4.1 - kΩ // pF Between pins 7 and 2 point f1 = 44 MHz, f2 = 45 MHz Output = 104dBµV/tone Output 1 dB compression OP1dB Single-ended output point f = 45 MHz Input impedance Zin f = 45 MHz *1 : Test circuit 1, *2: Test circuit 2, *3: Test circuit 3 Package Dimensions unit: mm (typ) 3245B 3.0 0.5 3.0 4.9 8 2 0.65 0.125 1.1MAX (0.85) 0.25 0.08 1 (0.53) SANYO : MSOP8(150mil) No.8338-2/6 LA8128T Pin Functions Pin Number Function 1 VCC 2 IF Inputs Equivalent circuit (Resistor units: Ω) 3 Bias 1kΩ 1kΩ 2 3 4 NC 5 Driver outputs 6 7 VCC 20Ω 6 20Ω 7 8.0mA 8 8.0mA Ground Block Diagram 1 8 GND IF Input1 2 7 Driver Output1 IF Input2 3 6 Driver Output2 NC 4 5 NC VCC OMB05001 No.8338-3/6 LA8128T LA8128T Test Circuit 1 VCC 1 8 2 7 1000pF TOKO 200Ω 617DB-1010 B4F 1000pF Spectru Analyz 1000pF 200Ω 51Ω 6 3 1000pF 1000pF 5 4 OM Note that the value of the output voltage read by the spectrum analyzer is voltage divided from the actual output by 50Ω/(200+50)Ω. LA8128T Test Circuit 2 VCC 1 8 2 7 1000pF TOKO Noise Figure Analyzer (Source) 200Ω 617DB-1010 B4F 1000pF 1000pF 200Ω 3 Noise Figure Analyzer (Sense) 51Ω 6 1000pF 1000pF 4 5 OMB05003 LA8128T Test Circuit 3 VCC 1 8 2 7 1000pF Network Analyzer 1000pF 1000pF 51Ω 3 6 1000pF 1000pF 4 5 No.8338-4/6 LA8128T No.8338-5/6 LA8128T SANYO Semiconductor Co.,Ltd. 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 Semiconductor Co.,Ltd. products described or contained herein. SANYO Semiconductor Co.,Ltd. strives to supply high-quality high-reliability products, however, any and all semiconductor products fail or malfunction with some probability. It is possible that these probabilistic 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 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 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. 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 Semiconductor Co.,Ltd. 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. 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. This catalog provides information as of May, 2007. Specifications and information herein are subject to change without notice. PS No.8338-6/6