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Ordering number:ENN1125D
Monolithic Linear IC
LA2113
FM Noise Canceller
Overview
The LA2113 is a DIP-16 version of the LA2110. It has the capability to effectively remove external noise (pulse noise) caused by engine, etc. and is used in conjunction with a PLL FM multiplex stereo demodulator (LA3373 and the like) with pilot signal canceller.
Package Dimensions
unit:mm 3006B-DIP16
[LA2113]
16 9
7.62
* Pilot signal compensation function. * By using in conjunction with PLL FM multiplex stereo demodulator with pilot signal canceller, adverse effect caused by pilot signal can be compensated. * Low distortion : THD=0.02%, 300mV. * Variable input type noise AGC system : This system widens the noise detector's dynamic range, so that pulse noise can be satisfactorily detected even in a weak electric field, and pulse noise is removed without adversely affecting distortion.
1 19.2
8
0.71
2.54
0.48
1.2
3.4
3.0 3.65max
SANYO : DIP16
Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter Maximum Supply Voltage Allowable Power Dissipation Operating Temperature Storage Temperature Symbol VCC max Pd max Topr Tstg
Ta50C
Conditions
Ratings 16 450 -20 to +75 -40 to +125
Unit V mW
C C
Recommended Operating Conditions at Ta = 25C
Parameter Recommended Supply Voltage Operating Voltage Range Symbol VCC VCC op Conditions Ratings 12 8 to 15 Unit V V
Any and all SANYO 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 representative nearest you before using any SANYO products described or contained herein in such applications. SANYO 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 products described or contained herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
11200TH (KT)/D247KI/4115KI/D142KI, TS No.1125-1/5
0.25
Features
6.4
LA2113
Operating Characteristics at Ta = 25C, VCC=12V, See specified Test Circuit
Parameter Quiescent Currant Voltage Gain Input Signal Dynamic Range Input Impedance Total Harmonic Distortion Low-pass Amp Gain High-pass Amp Gain Inverting Amp Distortion Inverting Amp Dynamic Range Inverting Amp Gain Output Noise Voltage Gate Time Noise Sensitivity Symbol Icco VG VD Zin THD VGL VGH THDI VDI VGI VNO tgate SN V7=300mV, f=1kHz V7, f=1kHz V7=300mV, f=1kHz V7=300mV, f=1kHz V5=300mV, f=1kHz V9=100mV, f=200kHz V15=100mV, f=19kHz V15, f=19kHz V15=100mV, f=19kHz V7, V15 shorted to GND V7=100mVp-p, 1s, f=1kHz V7, 1s, f=1kHz Output Output, THD=1% Output V4 V10 Output Output, THD=1% Output Output, 100kHz low-pass filter Output Output 13 1.0 1.2 300 1.0 1.3 30 21 1.6 60 30 -0.2 1.3 36k 51k 0.01 1.1 1.4 67k 0.03 1.2 1.65 0.1 Conditions (input pin) (output pin) min Ratings typ 16 +0.8 max 25 +1.8 Unit mA dB V % time time % mV time V s
30 mVp-o
Test Circuit
No.1125-2/5
LA2113
Equivalent Circuit Block Diagram
No.1125-3/5
LA2113
[Theory of LA2113 Noise Canceller]
In order to simplify the operation theory, the composite signal component is given only as a low frequency signal and a pilot signal, and the pilot cancel signal has the same phase, same amplitude as the pilot signal in the composite signal. Since the output voltage is the differential voltage of the plus and minus input of the subtraction circuit, it is equal to the voltage between the memory capacitor terminals. When the gate is closed, the composite signal is applied to the plus input terminal of the subtraction circuit, and the pilot cancel signal is applied to the minus input terminal. Thus the pilot signal is cancelled from the output and only the low frequency signal appears. In the same way, the voltage between the memory capacitor terminals is the differential voltage of the composite signal and the pilot cancel signal, so only the low frequency signal appears. When pulse noise is generated and the gate opens, the plus input and minus input signal waveforms of the subtraction circuit become equal. This is because the input impedance of the subtraction circuit is extremely high, so the memory capacitor is considered AC-shorted. Thus, when pulse noise is generated in the composite sig-is the voltage held by the memory capacitor. This voltage is that between traction circuit. As a result, pulse noise does not appear in the output. The voltage in the output has a DC level difference of plus and minus input, and that is the voltage maintained by the memory capacitor. This voltage is that between the memory capacitor terminals just before the gate opens, so it is the low frequency signal voltage just before the gate opens. Because the subtraction circuit input impedance is high, no charge/discharge current flows in the memory capacitor while the gate is open, so the memory capacitor can hold the voltage between its terminals. The voltage waveforms are illustrated below.
Note : The pilot cancel signal is given as sinusoidal in this explanation, but in the actual specimen application circuit, pilot cancel is performed by a triangular wave.
No.1125-4/5
LA2113
Sample Application Circuit : LA2113 & LA3373
Note : When using the sample application circuit : 1. Separation adjustment is performed with 10k variable resistance in low-pass filter. 2. Change noise detection sensitivity control RS to an adequate value for strong or medium electric field. 3. Adjust noise AGC with CY, RY for effective noise suppression in a medium or weak electric field. 4. Adjust pilot cancel degree with variable resistance of 50k connected to LA2113 pin 15. 5. By changing the 1F capacitor between LA3373 pin 11 and 12, pilot cancel follow-up response time can be changed. But if the value is decreased, distortion factor, etc. will be adversely affected. For detailed data on the Sample Application Circuit, refer to the catalog of the LA2110.
Specifications of any and all SANYO 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 Electric 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 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 expor ted without obtaining the expor t 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 Electric 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 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 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 January, 2000. Specifications and information herein are subject to change without notice.
PS No.1125-5/5

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