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DS3908 데이터시트(PDF) 3 Page - Maxim Integrated Products |
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DS3908 데이터시트(HTML) 3 Page - Maxim Integrated Products |
3 / 11 page Dual, 64-Position Nonvolatile Digital Potentiometer with Buffered Outputs _____________________________________________________________________ 3 AC ELECTRICAL CHARACTERISTICS (VCC = +3.0V to +5.5V, TA = -40°C to +85°C.) (See Figure 2.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS SCL Clock Frequency fSCL (Note 6) 400 kHz Bus Free Time between STOP and START Conditions tBUF 1.3 µs Hold Time (Repeated) START Condition tHD:STA 0.6 µs Low Period of SCL tLOW 1.3 µs High Period of SCL tHIGH 0.6 µs Data Hold Time tHD:DAT 0 0.9 µs Data Setup Time tSU:DAT 100 ns Start Setup Time tSU:STA 0.6 µs SDA and SCL Rise Time tR (Note 7) 20 + 0.1CB 300 ns SDA and SCL Fall Time tF (Note 7) 20 + 0.1CB 300 ns STOP Setup Time tSU:STO 0.6 µs SDA and SCL Capacitance CB (Note 7) 400 pF EEPROM Write Time tW (Note 8) 10 17 ms Startup Time tST VCC = 3.0V 40 µs PROGRAMMABLE-GAIN AMPLIFIER CHARACTERISTICS (VCC = +3.0V to +5.5V, TA = -40°C to +85°C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Common-Mode Input Voltage CMVIN 0 VCC - 1.5 V RL ≥ 2kΩ, G = 1V/V 0.975 1 1.025 RL ≥ 2kΩ, G = 2V/V 1.925 2 2.05 Gain G RL ≥ 2kΩ, G = 4V/V 3.850 4 4.10 V/V Output Voltage Range VOUT RL = 2k Ω, -1mA < IOUT < 1mA 0.3 VCC - 0.3 V Power-Supply Rejection Ratio PSRR 60 90 dB Output Source Current IOUT:SOURCE VOUT = 0V, Hx = Lx = 1V -15 mA Output Sink Current IOUT:SINK VOUT = 1V, Hx = Lx = 0V 15 mA Unity-Gain Frequency fT Gain = 1V/V, position 3Fh 3.5 MHz Amplifier Capacitive Loading CL 100 pF Input Offset Voltage VOS -9 +9 mV Load Regulation -1mA < IOUT < 1mA 800 2200 µV/mA Output-Voltage Slew Rate RL = 10k Ω, CL = 10pF 270 840 V/ms |
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