Datasheet LTC2392-16 (Analog Devices) - 9
| Manufacturer | Analog Devices |
| Description | 16-Bit, 500ksps SAR ADC with 94dB SNR |
| Pages / Page | 26 / 9 — pin Functions D15 (Pin 28):. VCM (Pin 36):. BUSY (Pin 29):. REFOUT (Pin … |
| File Format / Size | PDF / 321 Kb |
| Document Language | English |
pin Functions D15 (Pin 28):. VCM (Pin 36):. BUSY (Pin 29):. REFOUT (Pin 37):. RD (Pin 30):. REFIN (Pin 38):. CS (Pin 31):
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Text Version of Document
LTC2392-16
pin Functions D15 (Pin 28):
Data Bit 15. When SER/PAR = 0 this pin is
VCM (Pin 36):
Common Mode Analog Output. Typically Bit 15 of the parallel port data output bus. The data format the output voltage is 2.048V. Bypass to GND with a 10µF is determined by the logic level of OB/2C. capacitor.
BUSY (Pin 29):
Busy Output. A low-to-high transition oc-
REFOUT (Pin 37):
Internal Reference Output. Nominal curs when a conversion is started. It stays high until the output voltage is 4.096V. Connect this pin to REFIN if conversion is complete. The falling edge of BUSY can be using the internal reference. If an external reference is used as the data-ready clock signal. used connect REFOUT to ground.
RD (Pin 30):
Read Data Input. When CS and RD are both
REFIN (Pin 38):
Reference Input. An external reference low, the parallel and serial output bus is enabled. can be applied to REFIN if a more accurate reference is
CS (Pin 31):
Chip Select. When CS and RD are both low, required. If an external reference is used tie REFOUT to the parallel and serial output bus is enabled. CS is also ground. used to gate the external shift clock.
REFSENSE (Pin 39):
Reference Input Sense. Leave
RESET (Pin 32):
Reset Input. When high the LTC2392-16 REFSENSE open when using the internal reference. If is reset, and if this occurs during a conversion, the con- an external reference is used connect REFSENSE to the version is halted and the data bus is put into Hi-Z mode. ground pin of the external reference.
PD (Pin 33):
Power-Down Input. When high, the
IN–, IN+ (Pin 42, Pin 43):
Differential Analog Inputs. LTC2392-16 is powered down and subsequent conversion IN+ – (IN–) can range up to ±VREF . 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. 239216fa 9 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Analog Input Converter Characteristics Dynamic Accuracy Internal Reference Characteristics Digital Inputs and Digital Outputs Power Requirements Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagrams Applications Information Package Description Revision History Typical Application Related Parts
pin Functions D15 (Pin 28):
Data Bit 15. When SER/PAR = 0 this pin is
VCM (Pin 36):
Common Mode Analog Output. Typically Bit 15 of the parallel port data output bus. The data format the output voltage is 2.048V. Bypass to GND with a 10µF is determined by the logic level of OB/2C. capacitor.
BUSY (Pin 29):
Busy Output. A low-to-high transition oc-
REFOUT (Pin 37):
Internal Reference Output. Nominal curs when a conversion is started. It stays high until the output voltage is 4.096V. Connect this pin to REFIN if conversion is complete. The falling edge of BUSY can be using the internal reference. If an external reference is used as the data-ready clock signal. used connect REFOUT to ground.
RD (Pin 30):
Read Data Input. When CS and RD are both
REFIN (Pin 38):
Reference Input. An external reference low, the parallel and serial output bus is enabled. can be applied to REFIN if a more accurate reference is
CS (Pin 31):
Chip Select. When CS and RD are both low, required. If an external reference is used tie REFOUT to the parallel and serial output bus is enabled. CS is also ground. used to gate the external shift clock.
REFSENSE (Pin 39):
Reference Input Sense. Leave
RESET (Pin 32):
Reset Input. When high the LTC2392-16 REFSENSE open when using the internal reference. If is reset, and if this occurs during a conversion, the con- an external reference is used connect REFSENSE to the version is halted and the data bus is put into Hi-Z mode. ground pin of the external reference.
PD (Pin 33):
Power-Down Input. When high, the
IN–, IN+ (Pin 42, Pin 43):
Differential Analog Inputs. LTC2392-16 is powered down and subsequent conversion IN+ – (IN–) can range up to ±VREF . 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. 239216fa 9 Document Outline Features Applications Description Typical Application Absolute Maximum Ratings Pin Configuration Order Information Analog Input Converter Characteristics Dynamic Accuracy Internal Reference Characteristics Digital Inputs and Digital Outputs Power Requirements Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagrams Applications Information Package Description Revision History Typical Application Related Parts
