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ADS7820PB Datasheet(PDF) 2 Page - Burr-Brown (TI) |
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ADS7820PB Datasheet(HTML) 2 Page - Burr-Brown (TI) |
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2 / 10 page  2 ® ADS7820 SPECIFICATIONS ELECTRICAL TA = –40°C to +85°C, fS = 100kHz, VDIG = VANA = +5V, using internal reference, unless otherwise specified. ADS7820P/U ADS7820PB/UB PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS 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. Guaranteed RESOLUTION 12 D Bits ANALOG INPUT Voltage Ranges 0 to +5 D V Impedance 10 D k Ω Capacitance 35 D pF THROUGHPUT SPEED Conversion Time 5.7 8 DD µs Complete Cycle Acquire and Convert 10 D µs Throughput Rate 100 D kHz DC ACCURACY Integral Linearity Error ±1.0 ±0.5 LSB(1) Differential Linearity Error ±1.0 ±0.5 LSB No Missing Codes D Bits Transition Noise(2) 0.1 D LSB Full Scale Error(3,4) ±0.5 ±0.25 % Full Scale Error Drift ±7 ±5 ppm/ °C Full Scale Error(3,4) Ext. 2.5000V Ref ±0.5 ±0.25 % Full Scale Error Drift Ext. 2.5000V Ref ±2 D ppm/ °C Offset Error ±8 ±4mV Offset Error Drift ±2 D ppm/ °C Power Supply Sensitivity +4.75V < VD < +5.25V ±0.75 ±0.5 LSB (VDIG = VANA = VD) AC ACCURACY Spurious-Free Dynamic Range fIN = 45kHz 80 D dB(5) Total Harmonic Distortion fIN = 45kHz –80 D dB Signal-to-(Noise+Distortion) fIN = 45kHz 70 72 dB Signal-to-Noise fIN = 45kHz 70 72 dB Full-Power Bandwidth(6) 250 D kHz SAMPLING DYNAMICS Aperture Delay 40 D ns Transient Response FS Step 2 D µs Overvoltage Recovery(7) 150 D ns REFERENCE Internal Reference Voltage 2.48 2.5 2.52 DD D V Internal Reference Source Current 1 D µA (Must use external buffer.) External Reference Voltage Range 2.3 2.5 2.7 DD D V for Specified Linearity External Reference Current Drain Ext. 2.5000V Ref 100 D µA DIGITAL INPUTS Logic Levels VIL –0.3 +0.8 DD V VIH +2.0 VD +0.3V DD V IIL ±10 D µA IIH ±10 D µA DIGITAL OUTPUTS Data Format Parallel 12 bits Data Coding Straight Binary VOL ISINK = 1.6mA +0.4 D V VOH ISOURCE = 500µA+4 D V Leakage Current High-Z State, ±5 D µA VOUT = 0V to VDIG Output Capacitance High-Z State 15 D pF DIGITAL TIMING Bus Access Time 83 D ns Bus Relinquish Time 83 D ns |
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