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ADS7809P Datasheet(PDF) 3 Page - Texas Instruments |
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ADS7809P Datasheet(HTML) 3 Page - Texas Instruments |
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3 / 19 page  ADS7809 3 SBAS017C www.ti.com ELECTRICAL CHARACTERISTICS At TA = –40°C to +85°C, fS = 100kHz, VDIG = VANA = +5V, using internal reference and fixed resistors (see Figure 4), unless otherwise specified. ADS7809U ADS7809UB PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS RESOLUTION 16 ✻ Bits ANALOG INPUT Voltage Ranges ±10, 0V to 5V, etc. (See Table I) Impedance See Table I Capacitance 35 ✻ pF THROUGHPUT SPEED Complete Cycle Acquire and Convert 10 ✻ µs Throughput Rate 100 ✻ kHz DC ACCURACY Integral Linearity Error ±3 ±2 LSB(1) Differential Linearity Error +3, –2 ±1LSB No Missing Codes 15 16 Bits Transition Noise(2) 1.3 ✻ LSB Full-Scale Error(3,4) ±0.5 ✻ % Full-Scale Error Drift ±7 ✻ ppm/ °C Full-Scale Error(3,4) Ext. 2.5000V Ref ±0.5 ✻ % Full-Scale Error Drift Ext. 2.5000V Ref ±2 ✻ ppm/ °C Bipolar Zero Error(3) Bipolar Ranges ±10 ✻ mV Bipolar Zero Error Drift Bipolar Ranges ±2 ✻ ppm/ °C Unipolar Zero Error(3) 0V to 10V Ranges ±5 ✻ mV Unipolar Zero Error(3) 0V to 4V, 0V to 5V Ranges ±3 ✻ mV Unipolar Zero Error Drift Unipolar Ranges ±2 ✻ ppm/ °C Recovery to Rated Accuracy 1 µF Capacitor to CAP 1 ✻ ms after Power-Down Power-Supply Sensitivity +4.75V < VD < +5.25V ±8 ✻ LSB (VDIG = VANA = VD) AC ACCURACY Spurious-Free Dynamic Range fIN = 20kHz 90 100 96 ✻ dB(5) Total Harmonic Distortion fIN = 20kHz –100 –90 ✻ –94 dB Signal-to-(Noise + Distortion) fIN = 20kHz 83 88 86 ✻ dB –60dB Input 30 32 dB Signal-to-Noise fIN = 20kHz 83 88 86 ✻ dB Full-Power Bandwidth(6) 250 ✻ kHz SAMPLING DYNAMICS Aperture Delay 40 ✻ ns Transient Response FS Step 2 ✻ µs Overvoltage Recovery(7) 150 ✻ ns REFERENCE Internal Reference Voltage No Load 2.48 2.5 2.52 ✻✻ ✻ V Internal Reference Source Current 1 ✻ µA (Must use external buffer) External Reference Voltage Range 2.3 2.5 2.7 ✻✻ ✻ V For Specified Linearity External Reference Current Drain Ext. 2.5000V Ref 100 ✻ µA DIGITAL INPUTS Logic Levels VIL –0.3 +0.8 ✻✻ V VIH(8) +2.0 VD + 0.3V ✻✻ V IIL VIL = 0V ±10 ✻ µA IIH VIH = 5V ±10 ✻ µA |
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