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ADS1251UG4 Arkusz danych(PDF) 2 Page - Texas Instruments |
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ADS1251UG4 Arkusz danych(HTML) 2 Page - Texas Instruments |
2 / 24 page ADS1251 2 SBAS184D www.ti.com Analog Input: Current ............................................... ±100mA, Momentary ±10mA, Continuous Voltage .................................... GND – 0.3V to VDD + 0.3V VDD to GND ............................................................................ –0.3V to 6V VREF Voltage to GND ............................................... –0.3V to VDD + 0.3V Digital Input Voltage to GND ................................... –0.3V to VDD + 0.3V Digital Output Voltage to GND ................................. –0.3V to VDD + 0.3V Operating Temperature ...................................................... –40 °C to 85°C Power Dissipation .......................................................................... 500mW ABSOLUTE MAXIMUM RATINGS(1) ELECTROSTATIC DISCHARGE SENSITIVITY This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper han- dling and installation procedures can cause damage. ESD damage can range from subtle performance degrada- tion to complete device failure. Precision integrated circuits may be more susceptible to damage because very small parametric changes could cause the device not to meet its published specifications. NOTE: (1) Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. Exposure to absolute maximum conditions for extended periods may affect device reliability. SPECIFIED PACKAGE TEMPERATURE PACKAGE ORDERING TRANSPORT PRODUCT PACKAGE-LEAD DESIGNATOR RANGE MARKING NUMBER MEDIA, QUANTITY ADS1251 SO-8 D –40 °C to +85°C ADS1251U ADS1251U Rails, 100 " """ " ADS1251U/2K5 Tape and Reel, 2500 NOTE: (1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI web site at www.ti.com. PACKAGE/ORDERING INFORMATION(1) ELECTRICAL CHARACTERISTICS All specifications at TMIN to TMAX, VDD = +5V, CLK = 8MHz, and VREF = 4.096, unless otherwise specified. ADS1251U PARAMETER CONDITIONS MIN TYP MAX UNITS ANALOG INPUT Full-Scale Input Voltage +VIN – (–VIN) ±V REF V Absolute Input Voltage +VIN or –VIN to GND –0.3 VDD V Differential Input Impedance CLK = 3.84kHz 430 M Ω CLK = 1MHz 1.7 M Ω CLK = 8MHz 210 k Ω Input Capacitance 6pF Input Leakage At +25 °C5 50 pA At TMIN to TMAX 1nA DYNAMIC CHARACTERISTICS Data Rate 20.8 kHz Bandwidth –3dB, CLK = 8MHz 4.24 kHz Serial Clock (SCLK) 8MHz System Clock Input (CLK) 8MHz ACCURACY Integral Nonlinearity Differential Input ±0.0002 ±0.0015 % of FSR THD 1kHz Input; 0.1dB below FS 105 dB Noise 1.5 2.5 ppm of FSR, rms Resolution 24 Bits No Missing Codes 24 Bits Common-Mode Rejection 60Hz, AC 90 98 dB Gain Error 0.1 1 % of FSR Offset Error ±30 ±100 ppm of FSR Gain Sensitivity to VREF 1:1 Power-Supply Rejection Ratio 70 80 dB PERFORMANCE OVER TEMPERATURE Offset Drift 0.07 ppm/ °C Gain Drift 0.4 ppm/ °C PRODUCT # OF INPUTS MAXIMUM DATA RATE COMMENTS ADS1250 1 Differential 25.0kHz Includes PGA from 1 to 8 ADS1251 1 Differential 20.8kHz ADS1252 1 Differential 41.7kHz ADS1253 4 Differential 20.8kHz ADS1254 4 Differential 20.8kHz Includes Separate Analog and Digital Supplies PRODUCT FAMILY |
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