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ADC78H90 bảng dữ liệu(PDF) 4 Page - National Semiconductor (TI) |
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ADC78H90 bảng dữ liệu(HTML) 4 Page - National Semiconductor (TI) |
4 / 16 page ADC78H90 Converter Electrical Characteristics (Note 8) (Continued) The following specifications apply for AV DD =DVDD = +2.7V to 5.25V, AGND = DGND = 0V, fSCLK = 8 MHz, fSAMPLE = 500 KSPS, unless otherwise noted. Boldface limits apply for T A =TMIN to TMAX: all other limits TA = 25˚C. Symbol Parameter Conditions Typical Limits (Note 7) Units ANALOG INPUT CHARACTERISTICS V IN Input Range 0 to AV DD V I DCL DC Leakage Current ±1 µA (max) C INA Input Capacitance Track Mode 33 pF Hold Mode 3 pF DIGITAL INPUT CHARACTERISTICS V IH Input High Voltage DV DD = +4.75Vto +5.25V 2.4 V (min) DV DD = +2.7V to +3.6V 2.1 V (min) V IL Input Low Voltage DV DD = +2.7V to +5.25V 0.8 V (max) I IN Input Current V IN =0VorDVDD ±0.01 ±1 µA (max) C IND Digital Input Capacitance 2 4 pF (max) DIGITAL OUTPUT CHARACTERISTICS V OH Output High Voltage I SOURCE = 200 µA, DVDD = +2.7V to +5.25V DV DD −0.5 V (min) V OL Output Low Voltage I SINK = 200 µA 0.4 V (max) I OZH, I OZL TRI-STATE® Leakage Current ±1 µA (max) C OUT TRI-STATE® Output Capacitance 2 4 pF (max) Output Coding Straight (Natural) Binary POWER SUPPLY CHARACTERISTICS (C L =10pF) AV DD, DV DD Analog and Digital Supply Voltages AV DD ≥ DV DD 2.7 V (min) 5.25 V (max) I A +ID Total Supply Current, Normal Mode (Operational, CS low) AV DD =DVDD = +4.75V to +5.25V, f SAMPLE = 500 kSPS, fIN =40kHz 1.65 2.3 mA (max) AV DD =DVDD = +2.7V to +3.6V, f SAMPLE = 500 kSPS, fIN =40kHz 0.5 2.3 mA (max) Total Supply Current, Shutdown (CS high) AV DD =DVDD = +4.75V to +5.25V, f SAMPLE = 0 kSPS 200 nA AV DD =DVDD = +2.7V to +3.6V, f SAMPLE = 0 kSPS 200 nA P D Power Consumption, Normal Mode (Operational, CS low) \AV DD =DVDD = +4.75V to +5.25V 8.3 12 mW (max) AV DD =DVDD = +2.7V to +3.6V 1.5 8.3 mW (max) Power Consumption, Shutdown (CS high) AV DD =DVDD = +4.75V to +5.25V 0.5 µW AV DD =DVDD = +2.7V to +3.6V 0.3 µW AC ELECTRICAL CHARACTERISTICS f SCLK Maximum Clock Frequency 8 MHz (min) f SMIN Minimum Clock Frequency 50 kHz f S Maximum Sample Rate 500 KSPS (min) t CONV Conversion Time 13 SCLK cycles DC SCLK Duty Cycle 50 40 % (min) 60 % (max) t ACQ Track/Hold Acquisition Time Full-Scale Step Input 3 SCLK cycles Throughput Time Acquisition Time + Conversion Time 16 SCLK cycles f RATE Throughput Rate 500 kSPS (min) t AD Aperture Delay 4 ns www.national.com 4 |
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Mô tả tương tự - ADC78H90 |
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