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ADS7818P Arkusz danych(PDF) 2 Page - Texas Instruments |
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ADS7818P Arkusz danych(HTML) 2 Page - Texas Instruments |
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2 / 21 page  2 ® ADS7818 SPECIFICATIONS At TA = –40°C to +85°C, +VCC = +5V, fSAMPLE = 500kHz, fCLK = 16 • fSAMPLE, internal reference, unless otherwise specified. The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant any BURR-BROWN product for use in life support devices and/or systems. ADS7818P, E ADS7818PB, EB PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS ANALOG INPUT Full-Scale Input Span(1) +In – (–In) 0 5 TT V Absolute Input Range +In –0.2 VCC +0.2 TT V –In –0.2 +0.2 TT V Capacitance 15 T pF Leakage Current 1 T µA SYSTEM PERFORMANCE Resolution 12 T Bits No Missing Codes 12 T Bits Integral Linearity Error ±1 ±2 ±0.5 ±1 LSB(2) Differential Linearity Error ±0.8 ±0.5 ±1 LSB Offset Error ±2 ±5 ±1 T LSB Gain Error(3) 25 °C ±12 ±30 ±7 ±15 LSB –40 °C to +85°C ±50 ±35 LSB Common-Mode Rejection DC, 0.2Vp-p 70 T dB 1MHz, 0.2Vp-p 50 T dB Noise 150 T µVrms Power Supply Rejection Worst Case ∆, +V CC = 5V ±5% 1.2 T LSB SAMPLING DYNAMICS Conversion Time 1.625 T µs Acquisition Time 0.350 T µs Throughput Rate 500 T kHz Aperture Delay 5 T ns Aperture Jitter 30 T ps Step Response 350 T ns DYNAMIC CHARACTERISTICS Signal-to-Noise Ratio VIN = 5Vp-p at 100kHz 72 T dB Total Harmonic Distortion(4) VIN = 5Vp-p at 100kHz –78 –72 –82 –75 dB Signal-to-(Noise+Distortion) VIN = 5Vp-p at 100kHz 68 70 70 72 dB Spurious Free Dynamic Range VIN = 5Vp-p at 100kHz 72 78 75 82 dB Usable Bandwidth SINAD > 68dB 350 T kHz REFERENCE OUTPUT Voltage IOUT = 0 2.475 2.50 2.525 2.48 T 2.52 V Source Current(5) Static Load 50 T µA Drift IOUT = 0 20 T ppm / °C Line Regulation 4.75V ≤ V CC ≤ 5.25V 0.6 T mV REFERENCE INPUT Range 2.0 2.55 TT V Resistance(6) to Internal Reference Voltage 10 TT T k Ω DIGITAL INPUT/OUTPUT Logic Family CMOS T Logic Levels: VIH |IIH| ≤ +5µA 3.0 VCC +0.3 TT V VIL |IIL| ≤ +5µA –0.3 0.8 TT V VOH IOH = –500µA 3.5 TT V VOL IOL = 500µA 0.4 TT V Data Format Straight Binary T POWER SUPPLY REQUIREMENT +VCC Specified Performance 4.75 5.25 TT V Quiescent Current fSAMPLE = 500kHz 2.2 T mA Power Down 0.5 T mA Power Dissipation fSAMPLE = 500kHz 11 20 TT mW Power Down 2.5 T mW TEMPERATURE RANGE Specified Performance –40 +85 TT °C T Specifications same as ADS7818P,E. NOTES: (1) Ideal input span, does not include gain or offset error. (2) LSB means Least Significant Bit, with VREF equal to +2.5V, one LSB is 1.22mV. (3) Measured relative to an ideal, full-scale input (+In – (–In)) of 4.999V. Thus, gain error includes the error of the internal voltage reference. (4) Calculated on the first nine harmonics of the input frequency. (5) If the internal reference is required to source current to an external load, the reference voltage will change due to the internal 10k Ω resistor. (6) Can vary ±30%. |
Podobny numer części - ADS7818P |
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Podobny opis - ADS7818P |
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