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AD8304ARU 데이터시트(PDF) 3 Page - Analog Devices |
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AD8304ARU 데이터시트(HTML) 3 Page - Analog Devices |
3 / 20 page REV. A AD8304 –3– CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD8304 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. WARNING! ESD SENSITIVE DEVICE ABSOLUTE MAXIMUM RATINGS * Supply Voltage VP – VN . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 V Input Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 mA Internal Power Dissipation . . . . . . . . . . . . . . . . . . . . 270 mW JA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 °C/W Maximum Junction Temperature . . . . . . . . . . . . . . . . 125 °C Operating Temperature Range . . . . . . . . . . . –40 °C to +85°C Storage Temperature Range . . . . . . . . . . . . –65 °C to +150°C Lead Temperature Range (Soldering 60 sec) . . . . . . . . 300 °C *Stresses above those listed under Absolute Maximum Ratings may cause perma- nent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. PIN FUNCTION DESCRIPTIONS Pin No. Mnemonic Function 1 VNEG Optional Negative Supply, VN. This pin is usually grounded; for details of usage, see Applications section. 2PWDN Power-Down Control Input. Device is active when PWDN is taken LOW. 3, 5 VSUM Guard Pins. Used to shield the INPT current line. 4INPT Photodiode Current Input. Usually connected to photodiode anode (the photo current flows toward INPT). 6 VPDB Photodiode Biaser Output. May be connected to photodiode cathode to provide adaptive bias control. 7 VREF Voltage Reference Output of 2 V 8 VLOG Output of the Logarithmic Front-End Processor; ROUT = 5 k Ω to ground. 9 BFIN Buffer Amplifier Noninverting Input (High Impedance) 10 VPS2 Positive Supply, VP (3.0 V to 5.5 V) 11 VOUT Buffer Output; Low Impedance 12 VPS1 Positive Supply, VP (3.0 V to 5.5 V) 13 BFNG Buffer Amplifier Inverting Input 14 ACOM Analog Ground PIN CONFIGURATION TOP VIEW (Not to Scale) AD8304 VNEG PWDN VSUM INPT VSUM VPDB VREF ACOM BFNG VPS1 VOUT VPS2 BFIN VLOG 1 2 3 4 5 6 7 14 13 12 11 10 9 8 ORDERING GUIDE Model Temperature Range Package Description Package Option AD8304ARU –40 °C to +85°CTube, 14-Lead TSSOP RU-14 AD8304ARU-REEL 13" Tape and Reel AD8304ARU-REEL7 7" Tape and Reel AD8304-EVAL Evaluation Board |
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