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LTC2391CUK-16PBF Datasheet(PDF) 9 Page - Linear Technology |
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LTC2391CUK-16PBF Datasheet(HTML) 9 Page - Linear Technology |
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9 / 24 page  LTC2391-16 239116f BUSY (Pin 29): Busy Output. A low-to-high transition oc- curs when a conversion is started. It stays high until the conversion is complete. The falling edge of BUSY can be used as the data-ready clock signal. RD (Pin 30): Read Data Input. When CS and RD are both low, the parallel and serial output bus is enabled. CS (Pin 31): Chip Select. When CS and RD are both low, the parallel and serial output bus is enabled. CS is also used to gate the external shift clock. RESET (Pin 32): Reset Input. When high the LTC2391-16 is reset, and if this occurs during a conversion, the conver- sion is halted and the data bus is put into Hi-Z mode. PD (Pin 33): Power-Down Input. When high, the LTC2391-16ispowereddownandsubsequentconversion requests are ignored. Before entering power shutdown, the digital output data should be read. CNVST (Pin 34): Conversion Start Input. A falling edge on CNVST puts the internal sample-and-hold into the hold mode and starts a conversion. CNVST is independent of CS. VCM (Pin 36): Common Mode Analog Output. Typically the output voltage is 2.048V. Bypass to GND with a 10µF capacitor. REFOUT (Pin 37): Internal Reference Output. Nominal output voltage is 4.096V. Connect this pin to REFIN if us- ing the internal reference. If an external reference is used connect REFOUT to ground. REFIN (Pin 38): Reference Input. An external reference can be applied to REFIN if a more accurate reference is required. If an external reference is used tie REFOUT to ground. REFSENSE (Pin 39): Reference Input Sense. Leave REFSENSE open when using the internal reference. If an external reference is used connect REFSENSE to the ground pin of the external reference. IN–, IN+ (Pin 42, Pin 43): Differential Analog Inputs. IN+ – (IN–) can range up to ±VREF. PIN FuNCTIONs |
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