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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 3064-DIP16 [LB1409] . Display Nine red or green LEDs display the input level in the shape of a bar. . Input amplifier Wide application is available owing to built-in DC amplifier whose gain is variable with external resistors. . Comparator level 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 SANYO : DIP16 . 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.) . 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 D5 D6 D7 D8 D9 Pin No. 7 8 9 10 11 12 13 14 15 min 0.11 0.20 0.30 0.45 0.66 0.97 1.40 2.02 2.90 typ 0.18* 0.27* 0.38* 0.53* 0.75 1.06 1.50 2.12 3.00 max 0.25 0.34 0.46 0.61 0.84 1.15 1.60 2.22 3.10 Unit V V V V V V V V V *: No overlap occurs in each individual IC. SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN 53096HA(II)/8237KI/8205MW/7140KI,TS No.683-1/4 LB1409 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.683-2/4 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.683-3/4 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 products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. Anyone purchasing any products described or contained herein for an above-mentioned use shall: 1 Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: 2 Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. 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. No.683-4/4 |
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