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ADS8691IPWR bảng dữ liệu(PDF) 5 Page - Texas Instruments |
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ADS8691IPWR bảng dữ liệu(HTML) 5 Page - Texas Instruments |
5 / 73 page 5 ADS8691, ADS8695, ADS8699 www.ti.com SBAS777 – DECEMBER 2016 Product Folder Links: ADS8691 ADS8695 ADS8699 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated (1) Ideal input span, does not include gain or offset error. 6.5 Electrical Characteristics all minimum and maximum specifications are at TA = –40°C to +125°C; typical specifications are at TA = 25°C; AVDD = 5 V, DVDD = 3.3 V, VREF = 4.096 V (internal), and maximum throughput (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT ANALOG INPUTS VIN Full-scale input span(1) (AIN_P to AIN_GND) Input range = ±3 × VREF –12.288 12.288 V Input range = ±2.5 × VREF –10.24 10.24 Input range = ±1.5 × VREF –6.144 6.144 Input range = ±1.25 × VREF –5.12 5.12 Input range = ±0.625 × VREF –2.56 2.56 Input range = 3 × VREF 0 12.288 Input range = 2.5 × VREF 0 10.24 Input range = 1.5 × VREF 0 6.144 Input range = 1.25 × VREF 0 5.12 AIN_P Operating input range Input range = ±3 × VREF –12.288 12.288 V Input range = ±2.5 × VREF –10.24 10.24 Input range = ±1.5 × VREF –6.144 6.144 Input range = ±1.25 × VREF –5.12 5.12 Input range = ±0.625 × VREF –2.56 2.56 Input range = 3 × VREF 0 12.288 Input range = 2.5 × VREF 0 10.24 Input range = 1.5 × VREF 0 6.144 Input range = 1.25 × VREF 0 5.12 AIN_GND Operating input range All input ranges –0.1 0 0.1 V RIN Input impedance At TA = 25°C Input range = ±3 × VREF 1.02 1.2 1.38 MΩ Input range = ±1.5 × VREF 1.02 1.2 1.38 Input range = 3 × VREF 1.02 1.2 1.38 Input range = 1.5 × VREF 1.02 1.2 1.38 Input range = ±2.5 × VREF 0.85 1 1.15 Input range = ±1.25 × VREF 0.85 1 1.15 Input range = ±0.625 × VREF 0.85 1 1.15 Input range = 2.5 × VREF 0.85 1 1.15 Input range = 1.25 × VREF 0.85 1 1.15 Input impedance drift 7 25 ppm/°C IIN Input current With voltage at the AIN_P pin = VIN Input range = ±3 × VREF (VIN – 2.5) / RIN µA Input range = ±2.5 × VREF (VIN – 2.2) / RIN Input range = ±1.5 × VREF (VIN – 2.0) / RIN Input range = ±1.25 × VREF (VIN – 2.0) / RIN Input range = ±0.625 × VREF (VIN – 1.6) / RIN Input range = 3 × VREF (VIN – 2.6) / RIN Input range = 2.5 × VREF (VIN – 2.5) / RIN Input range = 1.5 × VREF (VIN – 2.7) / RIN Input range = 1.25 × VREF (VIN – 2.5) / RIN INPUT OVERVOLTAGE PROTECTION CIRCUIT VOVP All input ranges AVDD = 5 V or offers low impedance < 30 kΩ, all input ranges –20 20 V AVDD = floating with impedance > 30 kΩ, all input ranges –11 11 INPUT BANDWIDTH f–3 dB Small-signal Input bandwidth –3 dB All input ranges 15 kHz f–0.1 dB –0.1 dB All input ranges 2.5 |
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