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ADS8325 bảng dữ liệu(PDF) 5 Page - Texas Instruments |
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ADS8325 bảng dữ liệu(HTML) 5 Page - Texas Instruments |
5 / 37 page www.ti.com ELECTRICAL CHARACTERISTICS: VDD = +2.7V ADS8325 SBAS226C – MARCH 2002 – REVISED AUGUST 2007 Over recommended operating free-air temperature at –40 °C to +85°C, V REF = +2.5V, –IN = GND, fSAMPLE = 100kHz, and fCLK = 24 × f SAMPLE, unless otherwise noted. ADS8325I ADS8325IB PARAMETER TEST CONDITIONS MIN TYP MAX MIN TYP MAX UNIT ANALOG INPUT Full-scale range FSR +IN – (–IN) 0 VREF 0 VREF V Operating common-mode signal –0.3 0.5 –0.3 0.5 V Input resistance –IN = GND 5 5 G Ω Input capacitance –IN = GND, during sampling 45 45 pF Input leakage current –IN = GND ±50 ±50 nA Differential input capacitance +IN to –IN, during sampling 20 20 pF Full-power bandwidth FSBW FS sinewave, SINAD = –3 dB 4 4 kHz DC ACCURACY Resolution 16 16 Bits No missing code NMC 14 15 Bits Integral linearity error INL ±3 ±6 ±1.5 ±4 LSB Offset error VOS ±0.75 ±1.5 ±0.5 ±1 mV Offset error drift TCVOS ±3 ±3 ppm/ °C Gain error GERR ±33 ±16 LSB Gain error drift TCGERR ±0.3 ±0.3 ppm/ °C Noise 20 20 μVRMS Power-supply rejection 2.7V ≤ VDD ≤ 3.6V 7 7 LSB SAMPLING DYNAMICS Conversion time tCONV 24kHz < fCLK ≤ 2.4MHz 6.667 666.7 6.667 666.7 μs Acquisition time tAQ fCLK = 2.4MHz 1.875 1.875 μs Throughput rate 100 100 kSPS Clock frequency 0.024 2.4 0.024 2.4 MHz AC ACCURACY Total harmonic distortion THD 2.5VPP sinewave, at 1kHz –94 –94 dB Spurious-free dynamic range SFDR 2.5VPP sinewave, at 1kHz –96 –96 dB Signal-to-noise ratio SNR –85 –86 dB Signal-to-noise + distortion SINAD 2.5VPP sinewave, at 1kHz –85 –85.5 dB Effective number of bits ENOB 13.8 13.9 Bits VOLTAGE REFERENCE INPUT Reference voltage 2.5 VDD + 0.3 2.5 VDD + 0.3 V CS = GND, fSAMPLE = 0Hz 5 5 k Ω Reference input resistance CS = VDD 5 5 G Ω Reference input capacitance 20 20 pF 0.5 0.75 0.5 0.75 mA Reference input current CS = VDD 0.1 0.1 μA DIGITAL INPUTS(1) Logic family LVCMOS LVCMOS High-level input voltage VIH VDD = 3.6V 2 VDD + 0.3 2 VDD + 0.3 V Low-level input voltage VIL VDD = 2.7V –0.3 0.8 –0.3 0.8 V Input current IIN VI = VDD or GND ±50 ±50 nA Input capacitance CI 5 5 pF (1) Applies for 3.0V nominal supply: VDD (min) = 2.7V and VDD (max) = 3.6V. Copyright © 2002–2007, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Link(s): ADS8325 |
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Mô tả tương tự - ADS8325 |
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