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Ordering number : EN8338A
LA8128T
Overview
Monolithic Linear IC
AGC Amplifier with Step Gain Control
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 = 25C
Parameter Maximum supply rating Circuit current Allowable power dissipation Operating temperature Storage temperature Symbol VCC max I6 I7 Pd max Topr Tstg Pin 1 Pin 6 inflow current Pin 7 inflow current Ta 85C Conditions Rated value 7.0 2 2 220* -20 to +85 -55 to +150 Unit V mA mW C C
* 20.0 x 10.0 x 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 = 25C
Parameter Recommended supply voltage Operating supply voltage range Symbol VCC VCC op Pin 1 Pin 1 Conditions Rated value 5.0 4.5 to 5. 5 Unit V V
Electrical Characteristics
AC Characteristics at Ta = 25C, VCC = 5.0 V
Parameter Circuit current Input frequency range Noise figure Voltage gain Output 3rd order intercept point Output 1 dB compression point Input impedance Zin OP1dB Symbol ICC f(in) NF GV OIP3 No signal fc : -3 dB f = 45 MHz f = 45 MHz Between pins 7 and 2 Single-ended output f1 = 44 MHz, f2 = 45 MHz Output = 104dBV/tone Single-ended output f = 45 MHz f = 45 MHz *3 1.2 // 4.1 k // pF *1 113 116 dBV *1 123 126 dBV Conditions Min. *1 *1 *2 *1 18 30 18.5 Rated value Typ. 23 7 21 Max. 28 100 23.5 mA MHz dB dB Unit
*1 : Test circuit 1, *2: Test circuit 2, *3: Test circuit 3
Package Dimensions
unit: mm (typ) 3245B
3.0 8
3.0
4.9
1 (0.53)
2 0.65 0.25 0.125
SANYO : MSOP8(150mil)
0.08
(0.85)
1.1MAX
0.5
No.8338-2/6
LA8128T
Pin Functions
Pin Number 1 2 3
Bias 1k 2 3 1k
Function VCC IF Inputs
Equivalent circuit (Resistor units: )
4 5 6 7
NC Driver outputs
VCC 20 6 20 7 8.0mA 8.0mA
8
Ground
Block Diagram
VCC
1
8
GND
IF Input1
2
7
Driver Output1
IF Input2
3
6
Driver Output2
NC
4
5
NC
OMB05001
No.8338-3/6
LA8128T
LA8128T Test Circuit 1
VCC
1000pF TOKO 617DB-1010 B4F 1000pF
1
8
200
2
7
1000pF 200 51
Spectru Analyz
3
1000pF
6
1000pF
4
5
OM
Note that the value of the output voltage read by the spectrum analyzer is voltage divided from the actual output by 50/(200+50).
LA8128T Test Circuit 2
VCC
1000pF TOKO 200 617DB-1010 B4F 1000pF
1
8
Noise Figure Analyzer (Source)
2
7
1000pF 200
Noise Figure Analyzer (Sense)
51
3
1000pF
6
1000pF
4
5
OMB05003
LA8128T Test Circuit 3
VCC
1000pF
1
8
Network Analyzer
1000pF 51
2
7
1000pF
3
1000pF
6
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

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