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| UTC LA2284 LINEAR INTEGRATED CIRCUIT 5-DOT DUAL LED LEVEL METER DRIVER DESCRIPTION The UTC LA2284 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. FEATURE *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(3.5V ~ 16V) *Not necessary diode or transistor for ALC *Minimum number of external parts required SIP-9 BLOCK DIAGRAM ABSOLUTE MAXIMUM RATINGS(Ta=25C) PARAMETER Supply Voltage Amplifier input Voltage Pin 7 Voltage D terminal Output Voltage Operating Temperature Storage Temperature Power dissipation SYMBOL Vcc V8 V7 VD Topr Tstg PD VALUE 18 -0.5 ~ Vcc 6 18 -20 to +80 -40 to 125 1100 UNIT V V V V C C W UTC UNISONIC TECHNOLOGIES CO., LTD. 1 QW-R113-002,A UTC LA2284 PARAMETER Supply Voltage 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 LINEAR INTEGRATED CIRCUIT SYMBOL Vcc Icc Vin Vc1 Vc2 Vc3 Vc4 Vc5 ILED Gv IINO Vi=0.1V 2.5 5 11.0 24 -1.0 VIN=0 In Vc3 Level 46 -11.5 -6 ELECTRICAL CHARACTERISTICS(Ta=25C,Vcc=6V,f=1kHz,unless otherwise specified) TEST CONDITIONS MIN. 3.5 TYP. 6.0 5 56 -10.0 -5 0 3.0 6 15.0 26 -0.3 MAX. 16.0 8 66 -8.5 -4 UNIT V mA mV dB dB dB 3.5 7 18.5 28 dB dB mA dB A TEST CIRCUIT UTC UNISONIC TECHNOLOGIES CO., LTD. 2 QW-R113-002,A UTC LA2284 LINEAR INTEGRATED CIRCUIT APPLICATION INFORMATION 1. 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 vlue recommended by the R table. TYPICAL PERFORMANCE CHARACTERISTICS UTC UNISONIC TECHNOLOGIES CO., LTD. 3 QW-R113-002,A UTC LA2284 LINEAR INTEGRATED CIRCUIT 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. UTC UNISONIC TECHNOLOGIES CO., LTD. 4 QW-R113-002,A |
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