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Ordering number:ENN730F
Monolithic Digital IC
LB1450
LED Tuning Indicator
Use
Indicates tuning condition of FM receiver by means of 5 mode - 3 LEDs.
Package Dimensions
unit:mm 3017D-SIP9
[LB1450]
Features
* 3 LEDs display 5 mode tuning condition. Since the LEDs are driven under constant current supply, the LED current varys as shown below when two LEDs are lighted on simultaneously. This causes their brightness to vary, and enables the dynamic indication. * Desired tuning width can be set as the threshold width of window comparator is variable externally. * No switching radiation can be made as LED current changes over linearly. * Blanking at station interval and AM reception is easy to set by blanking pin. * Direct interface can be made to IF IC using quadrature detector (ex. LA1231, LA1140, etc.) * Single-ended 9 pin package with small mounting area. LED lightmode ing mode tuning condition (-) detuned semituned tuned semi tuned (+) detuned lighted off
22.0 3.0 5.7 max 3.2 0.25 1.35
1 (0.84) 2.54 0.5
9 1.3
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
22801TN (KT)/20295HK/7097KI/7213KI/D190KI No.730-1/4
0.51 min
(4.5)
SANYO : SIP9
LB1450 Specifications
Absolute Maximum Ratings at Ta = 25C
Parameter Maximum supply voltage Symbol VCC max VINR VIN Vcont VBL VOUT Pd max Topr VCC>VBL Pin 2, 3, 4
Ta=60C
Conditions VCC>VINR VCC>VIN
Ratings 18 -0.3 to +16 -0.3 to +16 -0.3 to +4 -0.3 to +16 16 500 -20 to +70
Unit V V V V V V mW C
Maximum input voltage
Maximum output voltage Allowable power dissipation Operating temperature
Allowable Operating Ranges at Ta = 25C
Parameter Supply voltage Tuning indicaiton voltage width Symbol VCC VT Conditions Ratings 8 to 16 200 Unit V mV
Electrical Characteristics at Ta = 25C, VCC=12V
Parameter Symbol IIN IINR IINBL Threshold voltage Simultaneous lighting width Output current Vth+ Vth- Vw IOUT1, IOUT2, IOUT3 VBL(L) VBL(H) IOFF ICC LED current excluded 3.0 3.8 VIN-VINR VIN-VINR Conditions Ratings min -2 -20 -2 150 -250 30 11 360 410 200 -200 50 18 430 500 typ max 0 +20 0 250 -150 100 25 500 550 10 5.6 Unit A A A mV mV mV mA mV mV A mA
Input bias current
Blanking threshold voltage Output leak current Current drain
Equivalent Circuit Block Diagram and Pin Assignment
No.730-2/4
LB1450
Application : The case of window width 400mV typ. (200mV) and interstation blanking.
No.730-3/4
LB1450
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 February, 2001. Specifications and information herein are subject to change without notice.
PS No.730-4/4

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