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ADS8422IBPFBTG4 Datasheet(PDF) 4 Page - Texas Instruments |
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ADS8422IBPFBTG4 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 29 page www.ti.com SPECIFICATIONS (Continued) ADS8422 SLAS512B – JUNE 2006 – REVISED DECEMBER 2006 T A = –40°C to 85°C, +VA = 5 V, +VAREG = 5.25 V to 3 V, +VBD = 5 V to 2.7 V, fSAMPLE = 4 MSPS, Vref = 4.096 V (measured with internal reference buffer) (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT DYNAMIC CHARACTERISTICS 10 kHz –114 Total harmonic distortion (THD)(1) VIN = 8 Vpp 100 kHz –102 dB 500 kHz –100 10 kHz 93 Signal to noise ratio (SNR) VIN = 8 Vpp 100 kHz 92 dB 500 kHz 90 10 kHz 92.5 Signal to noise + distortion (SINAD) VIN = 8 Vpp 100 kHz 91.5 dB 500 kHz 89.5 10 kHz 116 Spurious free dynamic range (SFDR) VIN = 8 Vpp 100 kHz 109 dB 500 kHz 106 –3dB Small signal bandwidth 30 MHz Maximum input frequency, fi(max)(2) VIN = 8 Vpp 2 MHz VOLTAGE REFERENCE INPUT Reference voltage at REFIN, Vref 3.9 4.096 4.15 V Reference resistance 1000 M Ω INTERNAL REFERENCE OUTPUT Internal reference start-up time From 95% (+VA), with 1- µF capacitor on REFOUT 25 ms Reference voltage range, Vref IO = 0, TA = 25°C 4.088 4.096 4.104 V Source current Static load 10 µA Line regulation +VA = 4.75 V to 5.25 V ±1 mV Drift IO = 0 ±6 PPM/ °C ANALOG COMMON-MODE, PIN 3 Output voltage range IO = 0 VREF/2 - 0.016 VREF/2 VREF/2 + 0.016 V Source current Static load 200 µA (1) Calculated on the first nine harmonics of the input frequency. (2) ADC Sampling circuit is optimized to accept inputs until Nyquist frequency. Dynamic performance may degrade rapidly above fi(max). 4 Submit Documentation Feedback |
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