UNISONIC TECHNOLOGIES CO., LTD
LA2284/A LINEAR INTEGRATED CIRCUIT
5-DOT DUAL LED LEVEL METER DRIVER
DESCRIPTION
浦东新区空气质量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
*Pb-free plating product number: LA2284L/LA2284AL
ORDERING INFORMATION
Order Number
Normal Lead Free Plating
Package Packing
LA2284-G09-T LA2284L-G09-T SIP-9 Tube LA2284-SM1-R LA2284L-SM1-R MSOP-10 Tape Reel LA2284A-G09-T LA2284AL-G09-T SIP-9 Tube LA2284A-SM1-R LA2284AL-SM1-R MSOP-10 Tape Reel
PIN CONFIGURATION
D1D2D3D4GND
D5
Output Input V CC
NC D1
D2
D3
D4GND D5Output Input V CC
MSOP-10
SIP-9
BLOCK DIAGRAM
ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
PARAMETER SYMBOL RATINGS UNIT
Supply Voltage V CC 18 V Amplifier input Voltage V8 -0.5 ~ V CC V Pin 7 Voltage V7 6 V D terminal Output Voltage V D 18 V Power dissipation P D 1100 W Operating Temperature T OPR -20 ~ +80 °C Storage Temperature T STG -40 ~ +125 °C Notes: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
亲子
沟通培训师
上海互联星空Absolute maximum ratings are stress ratings only and functional device operation is not implied. ELECTRICAL CHARACTERISTICS (Ta=25°C, V CC =6V, f=1kHz, unless otherwise specified)
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
LA2284 3.5 6.0 16.0V
Supply Voltage LA2284A V CC
3.0 6.0 16.0V
Supply Current I CC V IN =0 5 8 mA Sensitivity V IN In Vc3 Level 46 56 66 mV Comparator ON Level 1 Vc1 -11.5 -10.0 -8.5 dB Comparator ON Level 2 Vc2 -6 -5 -4 dB Comparator ON Level 3 Vc3 0 dB Comparator ON Level 4 Vc4 2.5 3.0 3.5 dB Comparator ON Level 5 Vc5 5 6 7 dB LED Output Current I O(LED) 11.0 15.0 18.5mA Amp Gain Gv V IN =0.1V 24 26 28 dB Input Bias Current I I(BIAS) -1.0 -0.3 µA
TEST CIRCUIT
APPLICATION INFORMATION
第一课标
医患
法律关系
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.
V
CC
V CC
V CC
desire for survival
V CC
TYPICAL CHARACTERISTIC
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