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DS3908 데이터시트(PDF) 4 Page - Maxim Integrated Products |
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DS3908 데이터시트(HTML) 4 Page - Maxim Integrated Products |
4 / 11 page Dual, 64-Position Nonvolatile Digital Potentiometer with Buffered Outputs 4 _____________________________________________________________________ NONVOLATILE MEMORY CHARACTERISTICS (VCC = +3.0V to +5.5V.) PARAMETER SYMBOL CONDITIONS MIN MAX UNITS EEPROM Write Cycles At +70°C 50,000 Note 1: All voltages are referenced to ground. Note 2: ISTBY specified assuming control pins are connected as follows: WP must be disconnected or connected high. H terminal connected to VCC, L terminal connected to GND, potentiometer position 1Dh, PGA is at 2V/V, A0 to A2 connected to VCC, SDA and SCL connected to VCC, with no load. Note 3: Absolute linearity is used to measure expected wiper voltage as determined by wiper position in a voltage-divider configuration. Note 4: This specification only refers to the potentiometers, and does not include the gain and offset error due to the PGA. Note 5: Relative linearity is used to determine the change of wiper voltage between two adjacent wiper positions in a voltage- divider configuration. Note 6: I2C interface timing shown is for fast-mode (400kHz) operation. This device is also backward-compatible with I2C stan- dard-mode timing. Note 7: CB—total capacitance of one bus line in picofarads, timing referenced to 0.9 x VCC and 0.1 x VCC. Note 8: EEPROM write begins after a stop condition occurs. 0 0.6 0.4 0.2 0.8 1.0 1.2 1.4 1.6 1.8 2.0 3.0 4.0 3.5 4.5 5.0 5.5 STANDBY SUPPLY CURRENT vs. SUPPLY VOLTAGE VCC Hx = VCC, Lx = GND A0 TO A2 = VCC SDA, SCL = VCC POT AT 1Dh GAIN = 2V/V NO LOAD +85 °C +25°C -40 °C 0 0.6 0.4 0.2 0.8 1.0 1.2 1.4 1.6 1.8 2.0 -40 10 -15 35 60 85 STANDBY SUPPLY CURRENT vs. TEMPERATURE TEMPERATURE ( °C) 3.3V 5.5V 4.0V 1 10,000 1,000,000 STANDBY SUPPLY CURRENT vs. SCL FREQUENCY SCL FREQUENCY (Hz) 100 1.16400 1.15000 1.15200 1.15400 1.15600 1.15800 1.16200 1.16000 Typical Operating Characteristics (TA = +25°C, unless otherwise noted.) 1.30000 1.10000 1.50000 1.40000 1.60000 1.70000 1.80000 1.90000 1.00000 0 10 20 30405060 OUTPUT VOLTAGE vs. POT SETTING POT SETTING (DEC) GAIN = 1V/V Hx = 1V Lx = 0.3V 0.001 0.01 0.1 1 10 100 VOL vs. IOUT:SINK 1 0.1 0.01 0.001 10 IOUT:SINK (mA) +85 °C +25°C -40 °C 0.001 0.01 0.1 1 10 100 VCC - VOH vs. IOUT:SOURCE 1 0.1 0.01 0.001 10 IOUT:SOURCE (mA) +85 °C +25°C -40 °C |
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