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ADS774KE Datasheet(PDF) 2 Page - Burr-Brown (TI) |
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ADS774KE Datasheet(HTML) 2 Page - Burr-Brown (TI) |
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2 / 13 page  ® ADS774 2 SPECIFICATIONS ELECTRICAL At TA = TMIN to TMAX , VDD = +5V, VEE = –15V to +5V, sampling frequency of 117kHz, fIN = 10kHz; unless otherwise specified. ADS774JE, JP, JU ADS774KE, KP, KU PARAMETER MIN TYP MAX MIN TYP MAX UNITS RESOLUTION 12 T Bits INPUTS ANALOG Voltage Ranges: Unipolar 0 to +10, 0 to +20 V Bipolar ±5, ±10 V Impedance: 0 to +10V, ±5V 8.5 12 TT k Ω ±10V, 0V to +20V 35 50 TT k Ω DIGITAL (CE, CS, R/C, AO, 12/8) Voltages: Logic 1 +2.0 +5.5 TT V Logic 0 –0.5 +0.8 TT V Current –5 0.1 +5 TTT µA Capacitance 5 T pF TRANSFER CHARACTERISTICS DC ACCURACY At +25 °C Linearity Error ±1 ±1/2 LSB Unipolar Offset Error (adjustable to zero) ±2 T LSB Bipolar Offset Error (adjustable to zero) ±10 ±4 LSB Full-Scale Calibration Error (1) ±0.25 T % of FS (2) (adjustable to zero) No Missing Codes Resolution 12 12 Bits TMIN to TMAX (3) Linearity Error ±1 ±1/2 LSB Full-Scale Calibration Error ±0.47 ±0.37 % of FS Unipolar Offset ±4 ±3 LSB Bipolar Offset ±12 ±5 LSB No Missing Codes Resolution 12 12 Bits AC ACCURACY (4) Spurious Free Dynamic Range 73 78 76 T dB Total Harmonic Distortion –77 –72 T –75 dB Signal-to-Noise Ratio 69 72 71 T dB Signal-to-(Noise + Distortion) Ratio 68 71 70 T dB Intermodulation Distortion –75 T (FIN1 = 20kHz, FIN2 = 23kHz) TEMPERATURE COEFFICIENTS (5) Unipolar Offset ±1 T ppm/ °C Bipolar Offset ±2 T ppm/ °C Full-Scale Calibration ±12 T ppm/ °C POWER SUPPLY SENSITIVITY Change in Full-Scale Calibration(6) +4.75V < VDD < +5.25V Max Change ±1/2 T LSB CONVERSION TIME (Including Acquisition Time) tAQ + tC at 25°C: 8-Bit Cycle 5.5 5.9 TT µs 12-Bit Cycle 7.5 8 TT µs 12-Bit Cycle, TMIN to TMAX: 8 8.5 TT µs SAMPLING DYNAMICS Sampling Rate at 25 °C 125 T kHz TMIN to TMAX 117 T kHz Aperture Delay, tAP With VEE = +5V 20 T ns With VEE = 0V to –15V 1.6 T µs Aperture Uncertainty (Jitter) With VEE = +5V 300 T ps, r ms With VEE = 0V to –15V 10 T ns, r ms Settling time to 0.01% for 1.4 T µs Full-Scale Input Change |
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