Ordering number : ENN8386 LA7784 Monolithic Linear IC Downconverter IC for Digital CATV Overview The LA7784 is a downconverter IC for digital CATV. It accepts RF input frequencies from 50 to 150MHz and supports the DOCSIS (USA) and Euro-DOCSIS (Europe) standards. Features • RF Mixer. • Attenuation control for RF Mixer. • Driver for SAW filter. • IF AGC amplifier. • IF Driver amplifier for ADC. Specifications Maximum Ratings at Ta = 25°C Parameter Maximum supply voltage Symbol VCC max Conditions Pin 8, 14, 19, 20, 21, 22, 26, 27 Circuit voltages V max Pin 9 Circuit current I12, 13 Pin 12, 13 sink current Allowable power dissipation Pd max Ratings Ta≤70°C Unit 6.0 V VCC V 2 V 900* mA Operating temperature range Topr -20 to +70 mW Storage temperature range Tstg -55 to +150 °C * On the board (114.3×76.1×1.6mm) Operating Conditions at Ta = 25°C Parameter Symbol Conditions Ratings Unit Recommended supply voltage VCC Pin 8, 14, 19, 20, 21, 22, 26, 27 5.0 V Operating supply voltage range VCC op Pin 8, 14, 19, 20, 21, 22, 26, 27 4.5 to 5.5 V Any and all SANYO Semiconductor 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's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO Semiconductor representative nearest you before using any SANYO Semiconductor products described or contained herein in such applications. SANYO Semiconductor 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 products described or contained herein. 92706 / O2505 MS OT B8-6337 No.8386-1/7 LA7784 AC Characteristics at Ta = 25°C, VCC = 3.3V Parameter Symbol Pin No. Ratings Conditions min typ Circuit current Itotal 8, 14, 19, 20, 21, 22, 26, 27 No Signal 80 RF input frequency range f(RF) 23, 24 fc:-3dB 50 Unit max 105 RF AGC range GR1 26, 27 V9 = 2.5 to 0V 45 53 Mixer conversion gain CG1 26/23, 24 V9 = 2.5V 19 22 Mixer inter modulation 1 IM3 1 40 50 130 mA 150 MHz 25 dB dB 27/23, 24 IF input frequency range IF amplifier gain f(IF) G(AGC) 26/23, 24 Input = 75dBµ 27/23, 24 V9 = 2.5V 4, 5 fc:-3dB 30 12/4, 5 V9 = 2.5V 51 55 Output = 110dBµ 40 50 dB 100 MHz 59 dB 13/4, 5 IF inter modulation 2 IM3 2 12/4, 5 dB 13/4, 5 Range 12, 13 IF Output Level < ±1dB IF AGC output level Vo(IF) 1 GR2 12 Single output 3 1.0 5 Vp-p dB IF output level Vo(IF) 2 13 Single output 1.0 Vp-p Package Dimensions unit: mm 3222A No. 8386-2/7 LA7784 Pin Assignment NC 1 28 DRIVER GND NC 2 27 DRIVER OUTPUT IF AGC AMP GND 3 26 DRIVER OUTPUT IF AGC AMP INPUT 4 25 RF ATT GND IF AGC AMP INPUT 5 24 RF ATT INPUT NC 6 23 RF ATT INPUT IF AGC AMP GND 7 22 RF ATT VCC GND GND IF AGC AMP VCC 8 21 LNA VCC AGC CONTROL 9 20 DRIVER VCC NC 10 19 MIXER/LO VCC IF DRIVER AMP GND 11 18 NC IF DRIVER AMP OUTPUT 12 17 LO INPUT IF DRIVER AMP OUTPUT 13 16 LO INPUT IF DRIVER AMP VCC 14 15 MIXER/LO GND Block Diagram No. 8386-3/7 LA7784 Pin Description Pin Number (unit: Ω) Description 1 No Connection 2 No Connection 3 AGC Amp GND 4 AGC Amp Input Equivalent circuit 5 6 No Connection 7 AGC Amp GND 8 AGC Amp VCC 9 AGC Control 10 No Connection 11 Post Amp GND Continued on next page. No. 8386-4/7 LA7784 (unit: Ω) Continued from preceding page. Pin Number 12 Description Equivalent circuit Post Amp Outputs 13 14 Post Amp VCC 15 Mixer/LO GND 16 LO Input 17 18 No Connection 19 Mixer/LO VCC 20 Driver VCC Continued on next page. No. 8386-5/7 LA7784 (unit: Ω) Continued from preceding page. Pin Number 21 Description Equivalent circuit LNA VCC 22 23 LNA Inputs 24 25 LNA GND 26 Driver Outputs 27 28 Driver Gnd No. 8386-6/7 LA7784 Test Circuit Specifications of any and all SANYO Semiconductor 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 Semiconductor 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 Semiconductor 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 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 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 Semiconductor 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. This catalog provides information as of October, 2005. Specifications and information herein are subject to change without notice. PS No.8386-7/7