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LTC1404CS8 датащи(PDF) 8 Page - Linear Technology |
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LTC1404CS8 датащи(HTML) 8 Page - Linear Technology |
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8 / 24 page ![]() 8 LTC1404 TYPICAL PERFORMANCE CHARACTERISTICS Unipolar Mode VCC Supply Current vs Temperature TEMPERATURE ( °C) –50 20 15 10 5 0 –25 0 25 1404 G23 50 75 100 125 fSAMPLE = 600kHz TEMPERATURE ( °C) –50 15.0 12.5 10.0 7.5 5.0 2.5 0 300 250 200 150 100 50 0 –25 0 25 1404 G24 50 75 100 125 VCC CURRENT VSS CURRENT fSAMPLE = 600kHz Bipolar Mode Supply Current vs Temperature PIN FUNCTIONS CLK (Pin 6): Clock. This clock synchronizes the serial data transfer. A minimum CLK pulse of 40ns signals the ADC to wake up from Nap or Sleep mode. CONV (Pin 7): Conversion Start Signal. This active high signal starts a conversion on its rising edge. Keeping CLK low and pulsing CONV two/four times will put the ADC into Nap/Sleep mode. VSS (Pin 8): Negative Supply. – 5V for bipolar operation. Bypass to GND with 10 µF tantalum in parallel with 0.1µF ceramic. VSS should be tied to GND for unipolar operation. VCC (Pin 1): Positive Supply, 5V. Bypass to GND (10µF tantalum in parallel with 0.1 µF ceramic). AIN(Pin2):AnalogInput.0Vto4.096V(Unipolar),±2.048V (Bipolar). VREF (Pin 3): 2.43V Reference Output. Bypass to GND (10 µF tantalum in parallel with 0.1µF ceramic). GND (Pin 4): Ground. GND should be tied directly to an analog ground plane. DOUT (Pin 5): The A/D conversion result is shifted out from this pin. |
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