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ADS1209SPWR Datasheet(PDF) 4 Page - Texas Instruments |
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ADS1209SPWR Datasheet(HTML) 4 Page - Texas Instruments |
4 / 20 page ADS1209 SBAS491 – FEBRUARY 2010 www.ti.com ELECTRICAL CHARACTERISTICS (continued) Over operating ambient temperature range of –40°C to +105°C, AVDD = 5V, BVDD = 3V, CHx+ = 0.2V to 4.8V, CHx– = 2.5V, VREFIN = VREFOUT = 2.5V (internal), CLKIN = 20MHz, and 16-bit Sinc 3 filter with OSR = 256, unless otherwise noted. ADS1209 PARAMETER TEST CONDITIONS MIN TYP(1) MAX UNIT SAMPLING DYNAMICS CLKSEL = 1, –40°C ≤ TA ≤ +85°C 8 10 12 MHz fCLK Internal clock frequency CLKSEL = 1, 7.8 10 12 MHz –40°C ≤ TA ≤ +105°C fCLKIN External clock frequency CLKSEL = 0 1 20 24 MHz AC ACCURACY THD Total harmonic distortion VIN = ±2.3VPP at 5kHz –85 –80 dB SFDR Spurious-free dynamic range VIN = ±2.3VPP at 5kHz 82 86 dB VIN = ±2.3VPP at 5kHz 86 90 dB SNR Signal-to-noise ratio VIN = ±2.0VPP at 5kHz 85 89 dB SINAD Signal-to-noise + distortion VIN = ±2.3VPP at 5kHz 80 84 dB Channel-to-channel isolation VIN = ±2.3VPP at 5kHz 100 dB REFERENCE VOLTAGE OUTPUT VREFOUT Reference output voltage 2.450 2.5 2.550 V TCVREFOUT Reference output voltage drift ±20 ppm/°C f = 0.1Hz to 10Hz, CL = 10mF 10 mVRMS Output voltage noise f = 10Hz to 10kHz, CL = 10mF 12 mVRMS IREFOUT Output current 10 mA IREFSC Short-circuit current 0.5 mA Turn-on settling time To accuracy level of 0.1%, no load 100 ms REFERENCE VOLTAGE INPUT VREFIN Input voltage 0.5 2.5 2.6 V RREFIN Input resistance 100 M Ω CREFIN Input capacitance 5 pF IREFIN Input current 1 mA DIGITAL INPUTS Logic family CMOS with Schmitt Trigger VIH High-level input voltage 0.7 × BVDD BVDD + 0.3 V VIL Low-level input voltage –0.3 0.3 × BVDD V IIN Input current VIN = BVDD or BGND ±50 nA CI Input capacitance 5 pF DIGITAL OUTPUTS Logic family CMOS VOH High-level output voltage BVDD = 4.5V, IOH = –100mA 4.44 V VOL Low-level output voltage BVDD = 4.5V, IOL = +100mA 0.5 V CO Output capacitance 5 pF CL Load capacitance 30 pF Data format Bit stream 4 Submit Documentation Feedback Copyright © 2010, Texas Instruments Incorporated Product Folder Link(s): ADS1209 |
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