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ADS8598S bảng dữ liệu(PDF) 7 Page - Texas Instruments |
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ADS8598S bảng dữ liệu(HTML) 7 Page - Texas Instruments |
7 / 63 page 7 ADS8598S www.ti.com SBAS827 – SEPTEMBER 2017 Product Folder Links: ADS8598S Submit Documentation Feedback Copyright © 2017, Texas Instruments Incorporated (1) Ideal input span, does not include gain or offset error. (2) LSB = least significant bit. (3) This parameter is the endpoint INL, not best-fit INL. (4) Gain error is calculated after adjusting for offset error, which implies that positive full scale error = negative full scale error = gain error ÷ 2. 6.5 Electrical Characteristics minimum and maximum specifications are at TA = –40°C to +125°C, AVDD = 4.75 V to 5.25 V; typical specifications are at TA = 25°C; AVDD = 5 V, DVDD = 3 V, VREF = 2.5 V (internal), and fSAMPLE = 200 kSPS (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ANALOG INPUTS Full-scale input span(1) (AIN_nP to AIN_nGND) RANGE pin = 1 –10 10 V RANGE pin = 0 –5 5 AIN_nP Operating input range, positive input RANGE pin = 1 –10 10 V RANGE pin = 0 –5 5 AIN_nGND Operating input range, negative input All input ranges –0.3 0 0.3 V RIN Input impedance At TA = 25°C 0.85 1 1.15 MΩ Input impedance drift All input ranges –25 ±7 25 ppm/°C IIkg(in) Input leakage current With voltage at AIN_nP = VIN, all input ranges (VIN – 2) / RIN µA SYSTEM PERFORMANCE Resolution 18 Bits NMC No missing codes 18 Bits DNL Differential nonlinearity All input ranges –0.9 ±0.5 0.9 LSB(2) INL Integral nonlinearity(3) All input ranges –5.5 ±2 5.5 LSB EG Gain error(4) All input ranges, external reference TA = –40°C to +85°C –256 ±10 256 LSB TA = –40°C to +125°C –256 ±10 300 All input ranges, internal reference ±10 Gain error matching (channel-to-channel) Input range = ±10 V, external and internal reference 32 170 LSB Input range = ±5 V, external and internal reference 34 170 Gain error temperature drift All input ranges, external reference –14 ±6 14 ppm/°C All input ranges, internal reference ±10 EO Offset error Input range = ±10 V –1.8 ±0.3 1.8 mV Input range = ±5 V –1.8 ±0.3 1.8 Offset error matching (channel-to-channel) All input ranges 0.5 5 mV Offset error temperature drift All input ranges –3 ±0.3 3 ppm/°C SAMPLING DYNAMICS tACQ Acquisition time 1 µs fS Maximum throughput rate per channel without latency All eight channels included 200 kSPS |
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