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THS1401 Datasheet(PDF) 5 Page - Texas Instruments |
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THS1401 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 22 page ![]() THS1401, THS1403, THS1408 14-BIT, 1/3/8 MSPS DSP COMPATIBLE ANALOG-TO-DIGITAL CONVERTERS WITH INTERNAL REFERENCE AND PGA SLAS248 – DECEMBER 1999 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics (continued) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT Reference Voltage VBG Bandgap voltage, internal mode 1.425 1.5 1.575 V VBG Input impedance 40 k Ω Positive reference voltage, REF+ 2.5 V Negative reference voltage, REF– 0.5 V Reference difference, ∆REF, REF+ – REF– 2 V Accuracy, internal reference 5% Temperature coefficient 40 ppm/ °C Voltage coefficient 200 ppm/V Analog Inputs Positive analog input, IN+ 0 AVDD V Negative analog input, IN– 0 AVDD V Analog input voltage difference ∆Ain = IN+ – IN–, Vref = REF+ – REF– –Vref Vref V Input impedance 25 k Ω PGA range 0 7 dB PGA step size 1 dB PGA gain error ±0.25 dB Digital Inputs VIH High-level digital input 2 V VIL Low-level digital input 0.8 V Input capacitance 5 pF Input current ±1 µA Digital Outputs VOH High-level digital output IOH = 50 µA 2.6 V VOL Low-level digital output IOL = 50 µA 0.4 V IOZ Output current, high impedance ±10 µA Clock Timing (CS low) THS1401 0.1 1 1 MHz fCLK Clock frequency THS1403 0.1 3 3 MHz THS1408 0.1 8 8 MHz td Output delay time 25 ns Latency 9.5 Cycles |