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ADS8201IRGET bảng dữ liệu(PDF) 3 Page - Texas Instruments |
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ADS8201IRGET bảng dữ liệu(HTML) 3 Page - Texas Instruments |
3 / 36 page ADS8201 www.ti.com SLAS534B – JULY 2009 – REVISED MAY 2010 ELECTRICAL CHARACTERISTICS (continued) At TA = –40°C to +85°C, 2.2V < VA = VREF < 5.5V, 2.2V < VD < 5.5V, fSAMPLE = 100kHz, and gain = 1, unless otherwise noted. ADS8201I PARAMETER TEST CONDITIONS MIN TYP MAX UNIT DC ACCURACY Resolution 12 Bits No missing codes 12 Bits INL Integral nonlinearity –1.5 ±0.5 +1.5 LSB DNL Differential nonlinearity –1 ±0.5 +1 LSB VOS Offset error(1) –7.5 3 +7.5 mV Offset error drift 0.2 ppm/°C End-point error Single-ended input, gain = 1 –0.1 +0.1 % GERR Gain error All gains –0.1 0.05 +0.1 % Gain error drift 0.3 ppm/°C CMRR Common-mode rejection ratio At dc, PGAREF = VREF/2 66 dB Noise 600 mVRMS PSS Power-supply sensitivity 0.8 LSB PSRR Power-supply rejection ratio 68 dB SAMPLING DYNAMICS tCONV Conversion time 10 ms Throughput rate 100 kHz CLOCK fCLK Internal conversion clock frequency 3.2 4 4.8 MHz SCLK External serial clock Used as I/O clock 25 MHz EXTERNAL REFERENCE INPUT Input voltage range, VREF 2.2V ≤ VA ≤ 5.5V 2.048 VA V VREF = (REF+ – REFGND) RREF Reference input resistance 360 k Ω DIGITAL INPUT/OUTPUT Logic family CMOS VIH High-level input voltage VD ≥ 2.2V 0.80 × (+VD) +VD + 0.3 V VIL Low-level input voltage VD ≥ 2.2V –0.3 0.20 × (+VD) V IIN Input current VIN = +VD or DGND 10 nA CIN Input capacitance 5 pF VOH High-level output voltage VD ≥ 2.2V, IOUT = 100mA 0.8 × (+VD) V VOL Low-level output voltage VD ≥ 2.2V, IOUT = 100mA 0 0.2 × (+VD) V COUT Output capacitance 10 pF CLOAD Load capacitance 100 pF Data format Straight Binary POWER SUPPLY VD Digital supply voltage 2.2 5.5 V VA Analog supply voltage 2.2 5.5 V VA = 5V 900 1500 mA IQA + IQD Supply current VA = 2.2V 600 mA VIN = FS at VREF = 5V, IPD Power-down current(2) 0.5 2 mA gain = 1 VA = 5V 4.5 7.5 mW PDISS Power dissipation VA = 2.2V 1.32 mW TEMPERATURE RANGE TA Operating –40 85 °C (1) Includes mux + PGA + ADC offset error. (2) With SCLK disabled. Copyright © 2009–2010, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Link(s): ADS8201 |
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