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LTC1412 Datasheet(PDF) 6 Page - Linear Technology |
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LTC1412 Datasheet(HTML) 6 Page - Linear Technology |
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6 / 16 page  6 LTC1412 TYPICAL PERFOR A CE CHARACTERISTICS RIPPLE FREQUENCY (Hz) –80 –40 0 –100 –60 –20 10k 100k 1M 10M 1412 G08 –120 1k VSS VDD DGND Power Supply Feedthrough vs Ripple Frequency INPUT FREQUENCY (Hz) 20 40 50 70 80 1k 100k 1M 10M 1412 G09 0 10k 60 30 10 Input Common Mode Rejection vs Input Frequency PIN FUNCTIONS AIN+ (Pin 1): Positive Analog Input. ±2.5V input range when AIN– is grounded. ±2.5V differential if AIN– is driven. AIN– (Pin 2): Negative Analog Input. Can be grounded or driven differentially with AIN+. VREF (Pin 3): 2.5V Reference Output. REFCOMP (Pin 4): 4.06V Reference Bypass Pin. Bypass to AGND with 10 µF ceramic (or 10µF tantalum in parallel with 0.1 µF ceramic). AGND (Pin 5): Analog Ground. D11 to D4 (Pins 6 to 13): Three-State Data Outputs. DGND (Pin 14): Digital Ground for Internal Logic. D3 to D0 (Pins 15 to 18): Three-State Data Outputs. OGND (Pin 19): Digital Ground for the Output Drivers. OVDD (Pin 20): Positive Supply for the Output Drivers. Tie to Pin 28 when driving 5V logic. Tie to 3V when driving 3V logic. DVDD (Pin 21): 5V Positive Supply. Tie to Pin 28. Bypass to AGND with 0.1 µF ceramic. DGND (Pin 22): Digital Ground for Internal Logic. CONVST (Pin 23): Conversion Start Signal. This active low signal starts a conversion on its falling edge. CS (Pin 24): Chip Select. This input must be low for the ADC to recognize the CONVST inputs. BUSY (Pin 25): The BUSY Output Shows the Converter Status. It is low when a conversion is in progress. VSS (Pin 26): – 5V Negative Supply. Bypass to AGND with 10 µF ceramic (or 10µF tantalum in parallel with 0.1µF ceramic). DVDD (Pin 27): 5V Positive Supply. Tie to Pin 28. AVDD (Pin 28): 5V Positive Supply. Bypass to AGND with 10 µF ceramic (or 10µF tantalum in parallel with 0.1µF ceramic). |
Similar Part No. - LTC1412 |
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Similar Description - LTC1412 |
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