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ADS7812UB bảng dữ liệu(PDF) 2 Page - Burr-Brown (TI) |
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ADS7812UB bảng dữ liệu(HTML) 2 Page - Burr-Brown (TI) |
2 / 17 page 2 ® ADS7812 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. SPECIFICATIONS At TA = –40°C to +85°C, fS = 40kHz, VS = +5V ±5%, using internal reference, unless otherwise specified. ADS7812P, U ADS7812PB, UB PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS RESOLUTION 12 T Bits ANALOG INPUT Voltage Range See Table I T Impedance See Table I T Capacitance 35 T pF THROUGHPUT SPEED Conversion Time 20 T µs Complete Cycle Acquire and Convert 25 T µs Throughput Rate 40 T kHz DC ACCURACY Integral Linearity Error 0.1 ±1 T ±0.5 LSB(1) Differential Linearity Error 0.1 ±1 T ±0.5 LSB No Missing Codes Guaranteed T Transition Noise(2) 0.05 T LSB Full Scale Error(3) ±0.5 ±0.25 % Full Scale Error Drift ±14 T ppm/ °C Full Scale Error(3) Ext. 2.5000V Ref ±0.5 ±0.25 % Full Scale Error Drift Ext. 2.5000V Ref ±5 T ppm/ °C Bipolar Zero Error Bipolar Ranges ±10 T mV Bipolar Zero Error Drift Bipolar Ranges ±3 T ppm/ °C Unipolar Zero Error Unipolar Ranges ±6 T mV Unipolar Zero Error Drift Unipolar Ranges ±3 T ppm/ °C Recovery Time to Rated Accuracy 1.0 µF Capacitor to CAP 300 T µs from Power Down(4) Power Supply Sensitivity +4.75V < (VS = +5V) < +5.25 ±0.75 T LSB AC ACCURACY Spurious-Free Dynamic Range fIN = 1kHz 80 98 TT dB(5) Total Harmonic Distortion fIN = 1kHz –96 –80 TT dB Signal-to-(Noise+Distortion) fIN = 1kHz 70 74 72 T dB Signal-to-Noise fIN = 1kHz 70 74 72 T dB Useable Bandwidth(6) 130 T kHz Full Power –3dB Bandwidth 600 T kHz SAMPLING DYNAMICS Aperture Delay 40 T ns Aperture Jitter 20 T ps Transient Response FS Step 5 T µs Overvoltage Recovery(7) 750 T ns REFERENCE Internal Reference Voltage 2.48 2.5 2.52 TT T V Internal Reference Source Current 100 T µA Internal Reference Drift 8 T ppm/ °C External Reference Voltage Range 2.3 2.5 2.7 TT T V External Reference Current Drain VREF = +2.5V 100 T µA DIGITAL INPUTS Logic Levels VIL –0.3 +0.8 TT V VIH +2.0 VS +0.3V TT V IIL ±10 T µA IIH ±10 T µA DIGITAL OUTPUTS Data Format Data Coding VOL ISINK = 1.6mA +0.4 T V VOH ISOURCE = 500µA+4 T V Leakage Current High-Z State, ±1 T µA VOUT = 0V to VS Output Capacitance High-Z State 15 15 pF Serial Binary Two’s Complement |
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