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ADS8519IB Datasheet(PDF) 3 Page - Texas Instruments |
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ADS8519IB Datasheet(HTML) 3 Page - Texas Instruments |
3 / 25 page www.ti.com ADS8519 SLAS462 – JUNE 2007 ELECTRICAL CHARACTERISTICS (continued) At TA = –40°C to 85°C, fs = 250 kHz, VDIG = VANA = 5 V, using internal reference (unless otherwise specified) ADS8519I ADS8519IB PARAMETER TEST CONDITIONS UNIT MIN TYP MAX MIN TYP MAX No missing codes 15 16 Bits Transition noise (3) 0.67 0.67 LSB ±10 V range –0.05 ±0.5 0.05 –0.05 ±0.5 0.05 Full-scale Int. Ref. %FSR error (4) (5) All other ranges –0.5 TBD 0.5 –0.5 TBD 0.5 Full-scale error drift Int. Ref. ±7 ±7 ppm/ °C ±10 V range –0.05 0.05 –0.05 0.05 Full-scale Ext. Ref. %FSR error (4) (5) All other ranges –0.5 0.5 –0.5 0.5 Full-scale error drift Ext. Ref. ±2 ±2 ppm/ °C Bipolar zero error (4) –4 4 –2 2 mV Bipolar zero error drift ±2 ±2 ppm/ °C Unipolar zero 8.192 V –20 20 –20 20 mV error (4) Unipolar zero error drift ±0.4 ±0.4 ppm/ °C Recovery to rated accuracy after 1- μF Capacitor to CAP 1 1 ms power down Power supply sensitivity +4.75 V < VD < +5.25 V –8 8 –8 8 LSB (VDIG = VANA = VD) AC ACCURACY SFDR Spurious-free dynamic range fI = 20 kHz 95 102 97 102 dB (6) THD Total harmonic distortion fI = 20 kHz –100 –94 –100 –96 dB fI = 20 kHz 87 91 89 91 dB SINAD Signal-to-(noise+distortion) –60-dB Input 30 32 dB SNR Signal-to-noise ratio fI = 20 kHz 88 92 90 92 dB Full-power bandwidth (7) 500 500 kHz SAMPLING DYNAMICS Aperture delay 5 5 ns Transient response FS Step 2 2 μs Overvoltage recovery (8) 150 150 ns REFERENCE Internal reference voltage No load 4.076 4.096 4.116 4.076 4.096 4.116 V Internal reference source current 1 1 μA (must use external buffer) Internal reference drift 8 8 ppm/ °C External reference voltage range 2.5 4.096 4.1 2.5 4.096 4.1 V for specified linearity External reference current drain Ext. 4.096-V Ref. 100 100 μA DIGITAL INPUTS Logic levels VIL Low-level input voltage VDIG = 1.65 V ~ 5.25 V –0.3 0.8, 0.35 xVDIG –0.3 0.8, 0.35 xVDIG V VIH High-level input voltage VDIG = 1.65 V ~ 5.25 V 2.0, 0.65 xVDIG VDIG +0.3 V 2.0, 0.65 xVDIG VDIG +0.3 V V IIL Low-level input current VIL = 0 V ±10 ±10 μA IIH High-level input current VIH = 5 V ±10 ±10 μA DIGITAL OUTPUTS Data format (Serial 16-bits) Data coding (Binary 2's complement or straight binary) Pipeline delay (Conversion results only available after completed conversion.) (3) Typical rms noise at worst case transitions and temperatures. (4) As measured with circuit shown in Figure 25 and Figure 26. (5) For bipolar input ranges, full-scale error is the worst case of –full-scale or +full-scale uncalibrated 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. For unipolar input ranges, full-scale error is the deviation of the last code transition divided by the transition voltage. It also includes the effect of offset error. (6) All specifications in dB are referred to a full-scale ±10-V input. (7) Full-power bandwidth is defined as the 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 © 2007, Texas Instruments Incorporated Submit Documentation Feedback 3 ADS8519 |
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