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Ordering number: EN683D
Monolithic Digital IC
LB1409
Level Meter Driver for 9 LEDs
Applications
Package Dimensions
unit : mm
. AC level meters such as VU meters. . DC level meters such as signal meters.
Functions
3006B-DIP16
[LB1409]
16 9
. Display
Nine red or green LEDs display the input level in the shape of a bar.
7.62
6.4
. Input amplifier
Wide application is available owing to built-in DC amplifier whose gain is variable with external resistors.
1 19.2
8
Setting is made by steps of 3 dB as follows. -18 dB, -15 dB, -12 dB, -9 dB, -6 dB, -3 dB, 0 dB, +3 dB, +6 dB
. Supply voltage
The recommended supply voltage range is so wide as 5.5 V to 16 V. (If pin Vref 2 is used, 7 V to 16 V.)
0.71
2.54
0.48
1.2
. Reference voltage
Constant voltage output is available with external transistor owing to pin Vref 2 = 5 V.
Specifications
Comparator Level OUT Pin Voltage at Ta = 25C, VCC = 12 V, Vref 1 = 3 V
Comparator level D1 D2 D3 D4 Pin No. 7 8 9 10 min 0.11 0.20 0.30 0.45 typ 0.18* 0.27* 0.38* 0.53* max 0.25 0.34 0.46 0.61 Unit V V 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
53096HA(II)/8237KI/8205MW/7140KI,TS No.683-1/5
3.4
3.0 3.65max
. Comparator level
SANYO : DIP16
0.25
LB1409
Comparator level D5 D6 D7 D8 D9 Pin No. 11 12 13 14 15 min 0.66 0.97 1.40 2.02 2.90 typ 0.75 1.06 1.50 2.12 3.00 max 0.84 1.15 1.60 2.22 3.10 Unit V V V V V
*: No overlap occurs in each individual IC.
Absolute Maximum Ratings at Ta = 25C
Parameter Maximum supply voltage Input voltage D1 to D9 output voltage D1 to D9 output current First reference flow-out current Second reference flow-out current VOUT supply voltage Allowable power dissipation Operating temperature Storage temperature Symbol VCC max VIN VOUT (D) IOL (D) Iref (1) Iref (2) VOUT Pd max Topr Tstg Pin 1 Pin 3, 4 D1 to D9 off Pin 7 to 15, D1 to D9 on Pin 2 Pin 16 Pin 5 Ta = 55C Conditions Ratings -0.3 to +18 -0.3 to VCC -0.3 to +18 +30 -1 to 0 -6 to 0 -0.3 to +6 500 -10 to +60 -40 to +125 Unit V V V mA mA mA V mW C C
Allowable Operating Ranges at Ta = 25C
Parameter Supply voltage Input voltage Output pin load resistance Symbol VCC VIN+ or VIN- RL Conditions Pin 1, ( ): Using Vref 2 Pin 3 or Pin 4 Between pin 5 OUT and pin 6 GND. Ratings +5.5 to +16 (+7 to +16) -0.3 to +VCC 15 k to 20 k Unit V V V
Electrical Characteristics at Ta = 25C, VCC = 12 V
Parameter Input bias current (Amplifier) Input bias current (Comparator) + Output leakage current Offset voltage (1) Offset voltage (2) First reference voltage Second reference voltage Current drain Amplifier gain Output flow-out current D pin output ON voltage D pin output leak current Symbol IIN+ (A) IIN- (A) IIN+ (C)+ IOL (A) Voffset (1) Voffset (2) Vref (1) Vref (2) ICC VG IOH VOL (D) IOH (D) Conditions Pin 3, VIN+ = 0 V, VIN- = 3 V, GND = 0 V Pin 4, VIN+ = 3 V, VIN- = 0 V, GND = 0 V Pin 5, VIN+ = 0 V, VIN- = 3 V, OUT = 0 V, GND = 0 V Pin 5, VCC = 6 V, VIN+ = VIN- = 0 V, GND = -6 V, GAIN = 20 dB Pin 5, VIN+ = VIN- = 0 V, GND = 0 V, GAIN = 20 dB Pin 2, Iref = 0 to 1 mA Pin 16, Iref = 0 to 6 mA Pin 1, VIN+ = 3 V, VIN- = 0 V Open loop Pin 5, VIN+ = 3 V, VIN- = 0 V, VOUT = 0 V Pin 7 to 15, D1 to D9, IOL = 20 mA, VIN+ = 3 V, VIN- = 0 V Pin 7 to 15, D1 to D9, VIN+ = 0 V, VIN- = 3 V, VD1 to D9 = 12 V Pin 5, VCC = 5.5 V, VIN+ = 3 V, VIN- = 0 V, RL = 15 k Pin 5, VCC = 12 V, VIN+ = 3 V, VIN- = 0 V, RL =15 k min -2 -2 -10 -180 0 2.6 4.2 30 -10 1.2 10 4 9.5 4.7 10 typ max 0 0 0 +180 +180 3.0 5.2 20 Unit A A A mV mV V V mA dB mA V A V V
Output voltage (Amplifier)
VOH
No.683-2/5
LB1409
Allowable power dissipation, Pd max - mW Pd max - Ta
Ambient temperature, Ta - C
Pin Assignment
Equivalent Circuit
Unit (resistance: )
Internal resistance: R7 (2.34 k), R6 (1.66 k), R5 (1.17 k), R4 (830 ), R3 (586 ), R2 (414 )
No.683-3/5
LB1409
Sample Application Circuits
(All with offset adjustment)
. Circuit not using Vref 2
Adjusting procedures 1. 2. 3. Turn the center of 10 k VR largely to 4.7 F capacitor side. Input AC signal of 50/u2 mV from AC IN. Adjust 1 k VR so that the output at OUT becomes 500 mV DC. Equation used in the calculation of R to be inserted in series with LED. Gain : 20 dB R (red) = (VCC - 2.5) / 6 k R (green) = (VCC - 2.8) / 18 k
. Circuit using Vref 2
Unit (resistance: , capacitance: F)
Adjusting procedures
. R to be inserted in series with LED is as follows . TR1 should be chosen with P
irrespective of VCC. R (red) = 360 (Approx. 6 mA) R (green) = 100 (Approx. 18 mA)
C considered; and the following transistors are recommended. Red LED drive 2SD400 Green LED drive 2SD325
Unit (resistance: , capacitance: F)
No.683-4/5
LB1409
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 exported without obtaining 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 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 May, 1996. Specifications and information herein are subject to change without notice. PS No.683-5/5

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