Datasheet LTC2369-18 (Analog Devices) - 4

HerstellerAnalog Devices
Beschreibung18-Bit, 1.6Msps, Pseudo- Differential Unipolar SAR ADC with 96.5dB SNR
Seiten / Seite24 / 4 — REFERENCE INPUT. The. denotes the specifications which apply over the …
Dateiformat / GrößePDF / 914 Kb
DokumentenspracheEnglisch

REFERENCE INPUT. The. denotes the specifications which apply over the full operating temperature range, otherwise

REFERENCE INPUT The denotes the specifications which apply over the full operating temperature range, otherwise

Modelllinie für dieses Datenblatt

Textversion des Dokuments

LTC2369-18
REFERENCE INPUT 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
VREF Reference Voltage (Note 5) l 2.5 5.1 V IREF Reference Input Current (Note 9) l 0.85 1.1 mA
DIGITAL INPUTS AND DIGITAL OUTPUTS 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
VIH High Level Input Voltage l 0.8 • OVDD V VIL Low Level Input Voltage l 0.2 • OVDD V IIN Digital Input Current VIN = 0V to OVDD l –10 10 μA CIN Digital Input Capacitance 5 pF VOH High Level Output Voltage IO = –500μA l OVDD – 0.2 V VOL Low Level Output Voltage IO = 500μA l 0.2 V IOZ Hi-Z Output Leakage Current VOUT = 0V to OVDD l –10 10 μA ISOURCE Output Source Current VOUT = 0V –10 mA ISINK Output Sink Current VOUT = OVDD 10 mA
POWER REQUIREMENTS 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
VDD Supply Voltage l 2.375 2.5 2.625 V OVDD Supply Voltage l 1.71 5.25 V IVDD Supply Current 1.6Msps Sample Rate l 7.2 8.6 mA IOVDD Supply Current 1.6Msps Sample Rate (CL = 20pF) 0.7 mA IPD Power Down Mode Conversion Done (IVDD + IOVDD + IREF, VREF > 2V) l 0.9 90 μA IPD Power Down Mode Conversion Done (IVDD + IOVDD + IREF, VREF > 2V, H-Grade) l 0.9 140 μA PD Power Dissipation 1.6Msps Sample Rate 18 21.5 mW Power Down Mode Conversion Done (IVDD + IOVDD + IREF, VREF > 2V) 2.25 225 μW Power Down Mode Conversion Done (IVDD + IOVDD + IREF, VREF > 2V, H-Grade) 2.25 315 μW
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
fSMPL Maximum Sampling Frequency l 1.6 Msps tCONV Conversion Time l 360 412 ns tACQ Acquisition Time tACQ = tCYC – tCONV – tBUSYLH (Note 10) l 200 ns tCYC Time Between Conversions l 625 ns tCNVH CNV High Time l 20 ns tBUSYLH CNV↑ to BUSY Delay CL = 20pF l 13 ns tCNVL Minimum Low Time for CNV (Note 11) l 20 ns tQUIET SCK Quiet Time from CNV↑ (Note 10) l 20 ns tSCK SCK Period (Notes 11, 12) l 10 ns tSCKH SCK High Time l 4 ns 236918fa 4