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ADS8517 Datasheet(PDF) 3 Page - Texas Instruments |
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ADS8517 Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 34 page  ADS8517 www.ti.com.......................................................................................................................................................................................... SLAS527 – SEPTEMBER 2008 ELECTRICAL CHARACTERISTICS (continued) At TA = -40°C to +85°C, fS = 200 kHz, VDIG = VANA = 5 V, using internal reference (see Figure 39), unless otherwise noted. ADS8517I ADS8517IB(1) PARAMETER TEST CONDITIONS MIN TYP MAX MIN TYP MAX UNIT THROUGHPUT SPEED Conversion time 2.5 2.5 µs Complete cycle Acquire and convert 5 5 µs Throughput rate 200 200 kHz DC ACCURACY INL Integral linearity error –3 3 –1.5 1.5 LSB(2) DNL Differential linearity error –2 3 –1 1.5 LSB No missing codes 15 16 Bits Transition noise(3) 0.9 0.8 LSB Gain error ±0.2 ±0.1 % Internal reference –0.75 0.75 –0.75 0.75 % Full-scale error(4) External 2.5-V reference –0.75 0.75 –0.75 0.75 % Internal reference ±9 ±9 ppm/°C Full-scale error drift External 2.5-V reference ±1 ±1 ppm/°C BPZ Bipolar zero error ±10 V range –5 ±1 5 –2 ±1 2 mV Bipolar zero error drift ±10 V range ±0.6 ±0.6 ppm/°C UPZ Unipolar zero error 0 V to 5 V, 0 V to 4 V ranges –3 ±0.1 3 –2 ±0.1 2 mV Unipolar zero error drift 0 V to 5 V, 0 V to 4 V ranges ±0.15 ±0.15 ppm/°C Recovery time to rated accuracy 2.2- µF capacitor to CAP 1 1 ms from power down(5) +4.75 V < VANA < +5.25 V –8 +8 –6 +6 Power-supply sensitivity LSB (VDIG = VANA = VS) +4.5 V < VANA < +5.5 V –20 +20 –12 +12 AC ACCURACY SFDR Spurious-free dynamic range fIN = 10 kHz, ±10 V 92 100 96 101 dB(6) THD Total harmonic distortion fIN = 10 kHz, ±10 V –97 –92 –98 –95 dB fIN = 10 kHz, ±10 V 85 88 87 88.5 SINAD Signal-to-(noise+distortion) dB –60 dB Input 29 29 SNR Signal-to-noise ratio fIN = 10 kHz, ±10 V 85 88 88 89 dB SNR usable bandwidth(7) fIN = 10 kHz, ±10 V 130 130 kHz SNR full-power bandwidth (–3 dB) fIN = 10 kHz, ±10 V 600 600 kHz SAMPLING DYNAMICS Aperture delay 40 40 ns Aperture jitter 20 20 ps Transient response FS step 5 5 µs Overvoltage recovery(8) 750 750 ns (2) LSB means Least Significant Bit. One LSB for the ±10 V input range is 305 µV. (3) Typical rms noise at worst-case transitions. (4) Full-scale error is the worst case of –Full Scale or +Full Scale untrimmed deviation from ideal first and last code transitions, divided by the transition voltage (not divided by the full-scale range) and includes the effect of offset error. (5) This is the time delay after the ADS8517 is brought out of Power-Down mode until all internal settling occurs and the analog input is acquired to rated accuracy. A Convert command after this delay will yield accurate results. (6) All specifications in dB are referred to a full-scale input. (7) Usable bandwidth defined as full-scale input frequency at which Signal-to-(Noise + Distortion) degrades to 60 dB. (8) Recovers to specified performance after 2 x FS input overvoltage. Copyright © 2008, Texas Instruments Incorporated Submit Documentation Feedback 3 Product Folder Link(s): ADS8517 |
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