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ADS8557IPMR Datenblatt(PDF) 8 Page - Texas Instruments |
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ADS8557IPMR Datenblatt(HTML) 8 Page - Texas Instruments |
8 / 47 page 8 ADS8556, ADS8557, ADS8558 SBAS404D – OCTOBER 2006 – REVISED FEBRUARY 2016 www.ti.com Product Folder Links: ADS8556 ADS8557 ADS8558 Submit Documentation Feedback Copyright © 2006–2016, Texas Instruments Incorporated (1) For more information, see the Analog Inputs section. 6.3 Recommended Operating Conditions MIN NOM MAX UNIT Supply voltage, AVDD to AGND 4.5 5 5.5 V Supply voltage, BVDD to BGND Low-voltage levels 2.7 3.0 3.6 V 5-V logic levels 4.5 5 5.5 Input supply voltage, HVDD to AGND Range 1 (±2 × VREF) 2 × VREF 16.5 V Range 2 (±4 × VREF) 4 × VREF 16.5 Input supply voltage, HVSS to AGND Range 1 (±2 × VREF) –16.5 –2 × VREF V Range 2 (±4 × VREF) –16.5 –4 × VREF Reference input voltage (VREF) 0.5 2.5 3.0 V Analog inputs(1) Range 1 (±2 × VREF) –2 × VREF 2 × VREF V Range 1 (±4 × VREF) –4 × VREF 4 × VREF Operating ambient temperature, TA –40 125 °C (1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application report, SPRA953. (2) Modeled in accordance with the Low-K or High-K thermal metric definitions of EIA/JESD51-3. 6.4 Thermal Information THERMAL METRIC(1) ADS855x UNIT PM (LQFP) 64 PINS RθJA Junction-to-ambient thermal resistance High-K thermal resistance(2) 50.3 °C/W RθJC(top) Junction-to-case (top) thermal resistance 12.0 °C/W RθJB Junction-to-board thermal resistance 24.0 °C/W ψJT Junction-to-top characterization parameter 0.5 °C/W ψJB Junction-to-board characterization parameter 23.5 °C/W RθJC(bot) Junction-to-case (bottom) thermal resistance NA °C/W (1) All values are at TA = 25°C. 6.5 Electrical Characteristics: General over recommended operating free-air temperature range of –40°C to 125°C, AVDD = 4.5 V to 5.5 V, BVDD = 2.7 V to 5.5 V, HVDD = 10 V to 15 V, HVSS = –15 V to –10 V, VREF = 2.5 V (internal), and fDATA = maximum (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP(1) MAX UNIT ANALOG INPUT CHXX Bipolar full-scale range RANGE pin/RANGE bit = 0 –4 × VREF 4 × VREF V RANGE pin/RANGE bit = 1 –2 × VREF 2 × VREF Input capacitance Input range = ±4 × VREF 10 pF Input range = ±2 × VREF 20 Input leakage current No ongoing conversion ±1 μA Aperture delay 5 ns Aperture delay matching Common CONVST for all channels 250 ps Aperture jitter 50 ps EXTERNAL CLOCK INPUT (XCLK) fXCLK External clock frequency An external reference must be used for fXCLK > fCCLK 1 18 20 MHz External clock duty cycle 45% 55% |
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Ähnliche Beschreibung - ADS8557IPMR |
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