Datasheet LTC2378-18 (Analog Devices) - 5
| Manufacturer | Analog Devices |
| Description | 18-Bit, 1Msps, Low Power SAR ADC with 102dB SNR |
| Pages / Page | 26 / 5 — aDc Timing characTerisTics. The. denotes the specifications which apply … |
| File Format / Size | PDF / 2.0 Mb |
| Document Language | English |
aDc Timing characTerisTics. The. denotes the specifications which apply over the full operating
Model Line for this Datasheet
- LTC2378CDE-18#PBF LTC2378CDE-18#PBF LTC2378CDE-18#TRPBF LTC2378CDE-18#TRPBF LTC2378CMS-18#PBF LTC2378CMS-18#PBF LTC2378CMS-18#TRPBF LTC2378CMS-18#TRPBF LTC2378HMS-18#PBF LTC2378HMS-18#PBF LTC2378HMS-18#TRPBF LTC2378HMS-18#TRPBF LTC2378IDE-18#PBF LTC2378IDE-18#PBF LTC2378IDE-18#TRPBF LTC2378IDE-18#TRPBF LTC2378IMS-18#PBF LTC2378IMS-18#PBF LTC2378IMS-18#TRPBF LTC2378IMS-18#TRPBF
Text Version of Document
LTC2378-18
aDc Timing characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
tSCKH SCK High Time l 4 ns tSCKL SCK Low Time l 4 ns tSSDISCK SDI Setup Time From SCK↑ (Note 11) l 4 ns tHSDISCK SDI Hold Time From SCK↑ (Note 11) l 1 ns tSCKCH SCK Period in Chain Mode tSCKCH = tSSDISCK + tDSDO (Note 11) l 13.5 ns tDSDO SDO Data Valid Delay from SCK↑ CL = 20pF (Note 11) l 9.5 ns tHSDO SDO Data Remains Valid Delay from SCK↑ CL = 20pF (Note 10) l 1 ns tDSDOBUSYL SDO Data Valid Delay from BUSY↓ CL = 20pF (Note 10) l 5 ns tEN Bus Enable Time After RDL↓ (Note 11) l 16 ns tDIS Bus Relinquish Time After RDL↑ (Note 11) l 13 ns
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 7:
Bipolar zero-scale error is the offset voltage measured from may cause permanent damage to the device. Exposure to any Absolute –0.5LSB when the output code flickers between 00 0000 0000 0000 0000 Maximum Rating condition for extended periods may effect device and 11 1111 1111 1111 1111. Full-scale bipolar error is the worst-case of reliability and lifetime. –FS or +FS untrimmed deviation from ideal first and last code transitions
Note 2:
All voltage values are with respect to ground. and includes the effect of offset error.
Note 3:
When these pin voltages are taken below ground or above REF or
Note 8:
All specifications in dB are referred to a full-scale ±5V input with a OV 5V reference voltage. DD, they will be clamped by internal diodes. This product can handle input currents up to 100mA below ground or above REF or OVDD without
Note 9:
fSMPL = 1MHz, IREF varies proportionately with sample rate. latch-up.
Note 10:
Guaranteed by design, not subject to test.
Note 4:
VDD = 2.5V, OVDD = 2.5V, REF = 5V, VCM = 2.5V, fSMPL = 1MHz,
Note 11:
Parameter tested and guaranteed at OVDD = 1.71V, OVDD = 2.5V REF/DGC = VREF. and OVDD = 5.25V.
Note 5:
Recommended operating conditions.
Note 12:
tSCK of 10ns maximum allows a shift clock frequency up to
Note 6:
Integral nonlinearity is defined as the deviation of a code from a 100MHz for rising capture. straight line passing through the actual endpoints of the transfer curve. The deviation is measured from the center of the quantization band. 0.8*OVDD tWIDTH 0.2*OVDD t tDELAY 50% 50% DELAY 237818 F01 0.8*OVDD 0.8*OVDD 0.2*OVDD 0.2*OVDD
Figure 1. Voltage Levels for Timing Specifications
237818fa For more information www.linear.com/LTC2378-18 5 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Converter Characteristics Dynamic Accuracy Reference Input Digital Inputs and Digital Outputs Power Requirements ADC Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagram Applications Information Board Layout Package Description Revision History Typical Application Related Parts
aDc Timing characTerisTics The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C. (Note 4) SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
tSCKH SCK High Time l 4 ns tSCKL SCK Low Time l 4 ns tSSDISCK SDI Setup Time From SCK↑ (Note 11) l 4 ns tHSDISCK SDI Hold Time From SCK↑ (Note 11) l 1 ns tSCKCH SCK Period in Chain Mode tSCKCH = tSSDISCK + tDSDO (Note 11) l 13.5 ns tDSDO SDO Data Valid Delay from SCK↑ CL = 20pF (Note 11) l 9.5 ns tHSDO SDO Data Remains Valid Delay from SCK↑ CL = 20pF (Note 10) l 1 ns tDSDOBUSYL SDO Data Valid Delay from BUSY↓ CL = 20pF (Note 10) l 5 ns tEN Bus Enable Time After RDL↓ (Note 11) l 16 ns tDIS Bus Relinquish Time After RDL↑ (Note 11) l 13 ns
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 7:
Bipolar zero-scale error is the offset voltage measured from may cause permanent damage to the device. Exposure to any Absolute –0.5LSB when the output code flickers between 00 0000 0000 0000 0000 Maximum Rating condition for extended periods may effect device and 11 1111 1111 1111 1111. Full-scale bipolar error is the worst-case of reliability and lifetime. –FS or +FS untrimmed deviation from ideal first and last code transitions
Note 2:
All voltage values are with respect to ground. and includes the effect of offset error.
Note 3:
When these pin voltages are taken below ground or above REF or
Note 8:
All specifications in dB are referred to a full-scale ±5V input with a OV 5V reference voltage. DD, they will be clamped by internal diodes. This product can handle input currents up to 100mA below ground or above REF or OVDD without
Note 9:
fSMPL = 1MHz, IREF varies proportionately with sample rate. latch-up.
Note 10:
Guaranteed by design, not subject to test.
Note 4:
VDD = 2.5V, OVDD = 2.5V, REF = 5V, VCM = 2.5V, fSMPL = 1MHz,
Note 11:
Parameter tested and guaranteed at OVDD = 1.71V, OVDD = 2.5V REF/DGC = VREF. and OVDD = 5.25V.
Note 5:
Recommended operating conditions.
Note 12:
tSCK of 10ns maximum allows a shift clock frequency up to
Note 6:
Integral nonlinearity is defined as the deviation of a code from a 100MHz for rising capture. straight line passing through the actual endpoints of the transfer curve. The deviation is measured from the center of the quantization band. 0.8*OVDD tWIDTH 0.2*OVDD t tDELAY 50% 50% DELAY 237818 F01 0.8*OVDD 0.8*OVDD 0.2*OVDD 0.2*OVDD
Figure 1. Voltage Levels for Timing Specifications
237818fa For more information www.linear.com/LTC2378-18 5 Document Outline Features Description Applications Typical Application Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Converter Characteristics Dynamic Accuracy Reference Input Digital Inputs and Digital Outputs Power Requirements ADC Timing Characteristics Typical Performance Characteristics Pin Functions Functional Block Diagram Timing Diagram Applications Information Board Layout Package Description Revision History Typical Application Related Parts
