Ordering number : ENA1146 Monolithic Linear IC LA7793V With Driver amplifier for ADC AGC amplifier Overview The LA7793V is a AGC amplifier with Driver amplifier for ADC. It is ideally suited for use with receiver systems receiving QPSK and/or QAM data transmissions. Functions • IF AGC control • IF AGC amplifier • IF Step Gain Controlled amplifier • Driver amplifier • ADC drive capability Specifications Maximum Ratings at Ta = 25°C Parameter Maximum Supply Voltage Circuit Voltages Circuit Current Allowable Power Dissipation Symbol VCC max V max Conditions Pins 12, 13 and 14 Pin 11 I8 Pin 8 sink current I9 Pin 9 sink current Pd max Ta ≤ 85°C * Ratings Unit 7.0 V VCC V 2 mA 2 mA 360 mW Operating Temperature Topr -40 to +85 °C Storage Temperature Tstg -55 to +150 °C * Mounted on specified board: 114.3mm × 76.1mm × 1.6mm, glass epoxy board. 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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. 31208 MS 20061213-S00005 No.A1146-1/4 LA7793V Recommended Operating Conditions at Ta = 25°C Parameter Symbol Supply Voltage Operating Supply Voltage Conditions Ratings Unit VCC Pins 12,13 and 14 5.0 V VCC op Pins 12,13 and 14 4.5 to 5.5 V Range Electrical Characteristics at Ta = 25°C, VCC = 5V Parameter Symbol Pin No. Ratings Conditions min Circuit Current Itotal 12, 13, 14 IF Input Frequency Range f(in) 8, 9 Noise Figure NF typ No signal. 27 Fc: -3dB 30 36 gnd: pin 3. 8, 9 50MHz open: pins 4, 5, 6 and 7. V11 = 2.5V gnd: pin 7. Unit max 46 mA 100 MHz 10 dB 7 dB 40 50 dB 29.5 32 34.5 dB 33.5 36 38.5 dB 37.5 40 42.5 dB 41.5 44 46.5 dB 45.5 48 50.5 dB open: pins 3, 4, 5 and 6. Inter Modulation IM3 8/1,16 9/1,16 Total Amplifier Gain V11 = 2.5V f1: 50MHz Output = 110dBµ each f2: 56MHz G1 gnd: pin 3. open: pins 4, 5, 6 and 7. G2 gnd: pin 4. open: pins 3, 5, 6 and 7. G3 8/1,16 50MHz gnd: pin 5 9/1,16 V11 = 2.5V open: pins 3, 4, 6 and 7. G4 gnd: pin 6. open: pins 3, 4, 5 and 7. G5 gnd: pin 7 open: pins 3, 4, 5 and 6. AGC Range GR Gain Step 9/1,16 8/1,16 V11 = 0.5 to 2.5V IF Output Level < ±1dB G2-G1 3 4 5 dB 8/1,16 50MHz G3-G2 3 4 5 dB 9/1,16 V11 = 2.5V G4-G3 3 4 5 dB G5-G4 3 4 5 dB GS IF Output Level 1 VO(IF)1 8 50MHz IF Output Level 2 VO(IF)2 9 V11 = 2.5V 40 dB Output Level 1.0 Vp-p 1.0 Vp-p Package Dimensions unit : mm (typ) 3178B 5.2 0.5 6.4 9 4.4 16 1 8 0.65 0.15 300 200 187 100 0 -40 -20 0 20 40 60 8085 100 Ambient temperature, Ta -- °C (1.3) 1.5max 0.22 360 Pd max -- Ta Mounted on specified board: 114.3×76.1×1.6mm3 glass epoxy board. 0.1 (0.33) Allowable power dissipation, Pd max -- mW 400 SANYO : SSOP16(225mil) No.A1146-2/4 LA7793V Block Diagram IF AGC Input VCC A/D Converter 16 15 14 13 12 VCC VCC VCC 11 10 9 AGC Step Gain Amp IF Input Driver Amp IF Step Gain Contrpl Switch 1 2 3 4 5 6 7 8 A/D Converter Please connect only one pin to a ground among Pins 3, 4, 5, 6 and 7. Pin Function Pin No. 1 Function Equivalent circuit IF input. Bias 16 1kΩ 1kΩ 1 16 2 GND 3 Step Gain Control Switch. Bias 4 5 6 7 8 Driver Output. VCC 9 40Ω 8 40Ω 9 5.7mA 10 5.7mA GND Continued on next page. No.A1146-3/4 LA7793V Continued from preceding page. Pin No. 11 Function Equivalent circuit AGC Control. VCC 1kΩ 11 12 VCC 13 14 15 GND 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 March, 2008. Specifications and information herein are subject to change without notice. PS No.A1146-4/4