Ordering number : ENA1273 Monolithic Linear IC LA8123TT For Digital CATV/Cable Modem Receiver AGC Amplifier Overview LA8123TT is an AGC amplifier. It is ideally suited for use with Digital TV, Digital CATV, Cable modem receiver and IP Telephony receiver. Functions • IF AGC control • IF AGC amplifier • Driver amplifier Specifications Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit Maximum supply voltage VCC max Pin 1 7.0 Input voltages Vin Pin 2, 3, 4 V -0.3 to VCC op+0.3 V Circuit Current I6 Pin 6 sink current 2 mA I7 Pin 7 sink current 2 mA Allowable Power Dissipation Pd max Ta ≤ 85°C * 310 mW Operating Temperature Range Topr -20 to 85 °C Storage Temperature Range Tstg -55 to 150 °C * : Specified board : 45.0mm × 43.0mm ¯ 1.6mm, glass epoxy 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. 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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. 90308 MS PC 20060421-S00003 No.A1273-1/7 LA8123TT Recommended Operating Conditions at Ta = 25°C Parameter Symbol Conditions Ratings Unit Recommended supply voltage VCC Pin 1 5.0 Operating supply voltage range VCC op Pin 1 4.5 to 5.5 V V AGC control voltage range Vagc Pin 4 0 to 3.3 V Electrical Characteristics at Ta = 25°C, VCC = 5.0V Parameter Symbol Pin Conditions No. Ratings Test circuit min Unit typ 1 No signal 1 33 2, 3 fc : -3dB 1 30 max Circuit current Itotal Input frequency range fin 38 43 mA 70 MHz Noise figure NF 6, 7 V4 = 3.0V, f = 45MHz 2 Inter modulation IM3 6, 7 V4 = 3.0V, 1 50 V4 = 3.0V, f = 45MHz 1 57 1 40 dB 1 45 dB 5 dB dBc f1 = 44MHz, f2 = 45MHz, Output level = 104dBμV/tone Total amplifier gain G (AGC1) 6/2, 3 60 63 dB 7/2, 3 AGC range GR (1) GR (2) 6/2, 3 Output level = 110dBμV 7/2, 3 V4 = 0.3V to 3.0V, f = 45MHz 6/2, 3 Input level = 50dBμV 7/2, 3 V4 = 0.3V to 3.0V, f = 45MHz Maximum Output Level VO 6, 7 f = 45MHz 1 1.8 Output offset dVO 6, 7 V4 = 3.0V, f = 45MHz 1 -0.5 Vp-p 0 0.5 dB Output level = 110dBμV (Pin 7 output) - (Pin 6 output) Maximum gain V4H 4 Maximum gain 1 3.0 3.3 V V4L 4 Minimum gain 1 0 0.3 V Zin 2, 3 V4 = 0V, f = 45MHz 3 AGC control voltage Minimum gain AGC control voltage Input impedance 1//4.7 kΩ//pF 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.A1273-2/7 LA8123TT Block Diagram VCC 1 8 GND 7 Driver output 1 IF input 1 2 6 Driver output 1 IF input 2 3 AGC 5 GND AGC control 4 Test Circuit 1 1 VCC 8 1000pF 1000pF TOKO 617DB-1674 2 7 3 6 200Ω Spectrum Analyzer 1000pF Vin 1000pF Zo=50Ω 1000pF AGC 5 4 AGC Voltage 200Ω 51Ω 1000pF Output Voltage is divided by 50Ω / (200+50)Ω Test Circuit 2 Noise FigureAnalyzer 1 VCC 8 1000pF TOKO 617DB-1674 2 7 3 6 1000pF 200Ω 1000pF 200Ω 51Ω 1000pF 200Ω 51Ω 1000pF 200Ω 51Ω 1000pF 1000pF AGC 5 4 AGC Voltage 1000pF VCC 1000pF Test Circuit 3 1 Network Analyzer 8 2 7 3 6 1000pF 51Ω 1000pF AGC 4 AGC Voltage 5 1000pF No.A1273-3/7 LA8123TT Pin Function Pin No. Function 1 VCC 2 IF input. Equivalent circuit 1 3 2 3 1.2kΩ 1.2kΩ Bias 8 4 AGC control. 1 10kΩ 4 8 5 Gain control Switch. 6 Driver output. 1 7 6 7 20Ω 20Ω 4mA 4mA 8 8 GND No.A1273-4/7 LA8123TT Gain -- Vagc 70 60 VCC = 5.0V f = 44MHz Circuit 1 60 30 20 10 40 Ta = Ta = 85 Ta °C = -2 0° C 40 30 20 10 0 0 – 10 – 10 – 20 25 °C 50 Voltage gain – dB 50 Voltage gain – dB Gain -- Vagc 70 VCC = 4.5V f = 44MHz Circuit 1 – 20 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 0 0.5 1.0 1.5 Vagc – V 2.0 2.5 3.0 3.5 Vagc – V Gain -- Vagc 70 VCC = 5.5V f = 44MHz Circuit 1 60 -2 30 0° C 85 °C Ta = 40 Ta = Voltage gain – dB 50 20 10 0 – 10 – 20 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 Vagc – V Noise Figure -- Gain 35 25 20 15 Ta =8 5°C Ta =20° C 10 5 0 10 25 20 15 Ta = 25° C 10 5 15 20 25 30 35 40 45 50 55 60 65 0 10 15 20 25 30 35 40 45 50 55 60 65 Voltage gain – dB Voltage gain – dB Noise Figure -- Gain 35 VCC = 5.5V f = 44MHz Circuit 2 30 Noise Figure – dB VCC = 5.0V f = 44MHz Circuit 2 30 Noise Figure – dB Noise Figure – dB 30 Noise Figure -- Gain 35 VCC = 4.5V f = 44MHz Circuit 2 25 20 15 Ta =8 5° Ta =- C 20° C 10 5 0 10 15 20 25 30 35 40 45 50 55 60 65 Voltage gain – dB No.A1273-5/7 LA8123TT 70 Gain -- f 70 60 Voltage gain – dB 80 VCC = 4.5V Vagc = 3.0V Circuit 1 50 40 30 30 10 10 3 5 7 2 100 3 5 0 10 7 1000 2 3 5 Frequency, f – MHz 80 70 7 2 100 3 5 7 1000 Frequency, f – MHz Gain -- f VCC = 5.5V Vagc = 3.0V Circuit 1 60 Voltage gain – dB 25 °C 40 20 2 Ta = 50 20 0 10 Gain -- f VCC = 5.0V Vagc = 3.0V Circuit 1 60 Ta =Ta 20°C =8 5° C Voltage gain – dB 80 Ta =Ta 20°C =8 5°C 50 40 30 20 10 0 10 2 3 5 7 2 100 3 5 7 1000 Frequency, f – MHz 110 Intermodulation Characteristic VCC = 4.5V f = 44MHz, 45MHz, Circuit 1 100 120 Output Single output voltage/Tone – dBμ Single output voltage/Tone – dBμ 120 Ta = -20°C Ta = 85°C 90 80 70 60 Ta = 85°C 50 40 Ta = -20°C IM3 30 40 50 60 70 80 90 100 110 Single output voltage/Tone – dBμ 110 Output Ta = 25°C 100 90 80 70 60 50 Ta = 25°C IM3 40 Differential input voltage/Tone – dBμ 120 110 Intermodulation Characteristic VCC = 5.0V f = 44MHz, 45MHz, Circuit 1 30 40 50 60 70 80 90 100 110 Differential input voltage/Tone – dBμ Intermodulation Characteristic VCC = 5.5V f = 44MHz, 45MHz, Circuit 1 100 Output Ta = -20°C Ta = 85°C 90 80 70 60 50 Ta = 85°C 40 30 40 IM3 50 60 Ta = -20°C 70 80 90 100 110 Differential input voltage/Tone – dBμ No.A1273-6/7 LA8123TT 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 September, 2008. Specifications and information herein are subject to change without notice. PS No.A1273-7/7