UNISONIC TECHNOLOGIES CO., LTD LA2284/A LINEAR INTEGRATED CIRCUIT 5-DOT DUAL LED LEVEL METER DRIVER DESCRIPTION The UTC LA2284/A is a monolithic integrated circuit designed for 5-dot LED level meter drivers with a built-in rectifying amplifier. It is suitable for AC/DC level meters such as VU meters or signal meters. FEATURES *High gain rectifying amplifier included (Gv=26dB) *Low radiation noise when LED turns on *Logarithmic indicator for 5-dot LED of bar type *Constant current output(15mA) *Wide operating supply voltage *Not necessary diode or transistor for ALC *Minimum number of external parts required ORDERING INFORMATION Order Number LA2284G-G09-T LA2284G-SM2-T LA2284G-SM2-R LA2284AG-G09-T LA2284AG-SM2-T LA2284AG-SM2-R Package SIP-9 MSOP-10 MSOP-10 SIP-9 MSOP-10 MSOP-10 Packing Tube Tube Tape Reel Tube Tube Tape Reel MARKING Package MARKING LA2284 LA2284A SIP-9 MSOP-10 www.unisonic.com.tw Copyright © 2014 Unisonic Technologies Co., Ltd 1 of 7 QW-R121-002.D LA2284/A UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw LINEAR INTEGRATED CIRCUIT 2 of 7 QW-R121-002.D LA2284/A LINEAR INTEGRATED CIRCUIT PIN CONFIGURATION SIP-9 MSOP-10 D1 1 D2 2 9 VCC D3 3 8 Input D4 4 7 Output GND 5 6 D5 10 NC 1 2 3 4 5 D1 D2 D3 D4 GND 6 7 8 9 D5 Output Input VCC BLOCK DIAGRAM UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 3 of 7 QW-R121-002.D LA2284/A LINEAR INTEGRATED CIRCUIT ABSOLUTE MAXIMUM RATINGS (TA=25C, unless otherwise specified) PARAMETER SYMBOL RATINGS UNIT Supply Voltage VCC 18 V Amplifier input Voltage V8 -0.5 ~ VCC V Pin 7 Voltage V7 6 V D terminal Output Voltage VD 18 V Power Dissipation PD 1100 W Operating Temperature TOPR -20 ~ +80 C Storage Temperature TSTG -40 ~ +125 C Notes: Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. ELECTRICAL CHARACTERISTICS (TA=25C, VCC=6V, f=1kHz, unless otherwise specified) PARAMETER Supply Voltage SYMBOL LA2284 LA2284A Supply Current Sensitivity Comparator ON Level 1 Comparator ON Level 2 Comparator ON Level 3 Comparator ON Level 4 Comparator ON Level 5 LED Output Current Amp Gain Input Bias Current VCC ICC VIN VC1 VC2 VC3 VC4 VC5 IO(LED) GV II(BIAS) UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw TEST CONDITIONS VIN=0 In VC3 Level VIN=0.1V MIN 3.5 3.0 46 -11.5 -6 2.5 5 16.5 24 -1.0 TYP 6.0 6.0 5 56 -10.0 -5 0 3.0 6 26 -0.3 MAX 16.0 16.0 8 66 -8.5 -4 3.5 7 22 28 UNIT V V mA mV dB dB dB dB dB mA dB A 4 of 7 QW-R121-002.D LA2284/A TEST CIRCUIT APPLICATION INFORMATION LINEAR INTEGRATED CIRCUIT By changing the time constant C1 and, the response, attack and release time, may be varied. In the above application conditions, power dissipation may be operated at higher levels than the absolute maximum ratings. The wattage of R is to be determined by the total LED current and R value recommended by the R table. UNISONIC TECHNOLOGIES CO., LTD www.unisonic.com.tw 5 of 7 QW-R121-002.D UNISONIC TECHNOLOGIES CO., LTD LA2284/A LINEAR INTEGRATED CIRCUIT TYPICAL CHARACTERISTIC UTC 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 UTC products described or contained herein. UTC products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably expected to result in personal injury. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. www.unisonic.com.tw Copyright © 2014 Unisonic Technologies Co., Ltd 7 of 7 QW-R121-002.D