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LTC2453 数据表(PDF) 3 Page - Linear Technology |
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LTC2453 数据表(HTML) 3 Page - Linear Technology |
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3 / 18 page  LTC2453 3 2453fb The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Notes 2, 7) ANALOG INPUTS AND REFERENCES The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VCC Supply Voltage l 2.7 5.5 V ICC Supply Current Conversion Sleep l l 800 0.2 1200 0.6 μA μA POWER REQUIREMENTS The l denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIH High Level Input Voltage l 0.7VCC V VIL Low Level Input Voltage l 0.3VCC V II Digital Input Current l –10 10 μA VHYS Hysteresis of Schmidt Trigger Inputs (Note 3) l 0.05VCC V VOL Low Level Output Voltage (SDA) I = 3mA l 0.4 V IIN Input Leakage 0.1VCC ≤ VIN ≤ 0.9VCC l 1μA CI Capacitance for Each I/O Pin l 10 pF CB Capacitance Load for Each Bus Line l 400 pF I2C INPUTS AND OUTPUTS SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS VIN+ Positive Input Voltage Range l 0VCC V VIN– Negative Input Voltage Range l 0VCC V VREF+ Positive Reference Voltage Range VREF+ – VREF– ≥ 2.5V l VCC – 2.5 VCC V VREF– Negative Reference Voltage Range VREF+ – VREF– ≥ 2.5V l 0VCC – 2.5 V VOR+, VUR+ Overrange/Underrange Voltage, IN+ VREF = 5V, VIN– = 2.5V (See Figure 2) 8 LSB VOR–, VUR– Overrange/Underrange Voltage, IN– VREF = 5V, VIN+ = 2.5V (See Figure 2) 8 LSB CIN IN+, IN– Sampling Capacitance 0.35 pF IDC_LEAK(IN+) IN+ DC Leakage Current VIN = GND (Note 8) VIN = VCC (Note 8) l l –10 –10 1 1 10 10 nA nA IDC_LEAK(IN–) IN– DC Leakage Current VIN = GND (Note 8) VIN = VCC (Note 8) l l –10 –10 1 1 10 10 nA nA IDC_LEAK(REF+, REF–) REF+, REF– DC Leakage Current VREF = 3V (Note 8) l –10 1 10 nA ICONV Input Sampling Current (Note 5) 50 nA |
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