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ADS8548SPM bảng dữ liệu(PDF) 6 Page - Texas Instruments |
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ADS8548SPM bảng dữ liệu(HTML) 6 Page - Texas Instruments |
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6 / 51 page  ADS8528 ADS8548 ADS8568 SBAS543A – AUGUST 2011 – REVISED OCTOBER 2011 www.ti.com ELECTRICAL CHARACTERISTICS: GENERAL All minimum/maximum specifications are at TA = –40°C to +125°C, specified supply voltage range, VREF = 2.5V (internal), VIN = ±10V, and fDATA = max, unless otherwise noted. Typical values are at TA = +25°C, HVDD = 15V, HVSS = –15V, AVDD = 5V, and DVDD = 3.3V. ADS8528, ADS8548, ADS8568 PARAMETER CONDITIONS MIN TYP MAX UNIT ANALOG INPUT RANGE pin/RANGE bit = 0 –4VREF 4VREF V Bipolar full-scale range CHXX RANGE pin/RANGE bit = 1 –2VREF 2VREF V Input range = ±4VREF 10 pF Input capacitance Input range = ±2VREF 20 pF Input leakage current No ongoing conversion –1 1 μA Aperture delay 5 ns Aperture delay matching Common CONVST for all channels 100 ps Aperture jitter 50 ps Power-supply rejection ratio PSRR At output code FFFFh, related to HVDD and HVSS –78 dB REFERENCE VOLTAGE OUTPUT (REFOUT) 2.5V operation, REFDAC = 3FFh 2.485 2.5 2.515 V 2.5V operation, REFDAC = 3FFh at +25 °C 2.496 2.5 2.504 V Reference voltage VREF 3.0V operation, REFDAC = 3FFh 2.985 3.0 3.015 V 3.0V operation, REFDAC = 3FFh at +25 °C 2.995 3.0 3.005 V Reference voltage drift dVREF/dT ±10 ppm/ °C Power-supply rejection ratio PSRR At output code FFFFh, related to AVDD –77 dB Output current IREFOUT DC current –2 2 mA Short-circuit current(1) IREFSC 50 mA Turn-on settling time tREFON 10 ms At REF_xP/N pins 4.7 10 μF External load capacitance At REFIO pin 100 470 nF Tuning range REFDAC Internal reference output voltage range 0.2 VREF VREF V REFDAC resolution 10 Bits REFDAC differential nonlinearity DNLDAC –1 ±0.1 1 LSB REFDAC integral nonlinearity INLDAC –2 ±0.1 2 LSB REFDAC offset error VOSDAC VREF = 0.5V (DAC = 0CDh) –4 ±0.65 4 LSB REFERENCE VOLTAGE INPUT (REFIN) Reference input voltage VREFIN 0.5 2.5 3.025 V Input resistance 100 M Ω Input capacitance 5 pF Reference input current 1 μA (1) Reference output current is not limited internally. 6 Copyright © 2011, Texas Instruments Incorporated Product Folder Link(s): ADS8528 ADS8548 ADS8568 |
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