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ADS8508 Arkusz danych(PDF) 4 Page - Texas Instruments |
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ADS8508 Arkusz danych(HTML) 4 Page - Texas Instruments |
4 / 28 page www.ti.com ADS8508 SLAS433 – SEPTEMBER 2005 ELECTRICAL CHARACTERISTICS (continued) At T A = -40°C to 85°C, fs = 250 kHz, VDIG = VANA = 5 V, using internal reference and fixed resistors (See Figure 28 and Figure 29) (unless otherwise specified) ADS8508IB PARAMETER TEST CONDITIONS UNIT MIN TYP MAX IIL Low-level input current VIL = 0 V ±10 µA IIH High-level input current VIH = 5 V ±10 µA DIGITAL OUTPUTS Data format (Serial 16-bits) Data coding (Binary 2's complement or straight binary) Pipeline delay (Conversion results only available after completed con- version.) Data clock (Selectable for internal or external data clock) Internal clock (output only when EXT/INT Low 9 MHz transmitting data) External clock (can run continually EXT/INT High 0.1 26 but not recommended for optimum MHz performance) VOL Low-level output voltage ISINK = 1.6 mA 0.4 V VOH High-level output voltage ISOURCE = 500 µA 4 V Leakage current Hi-Z state, ±5 µA VOUT = 0 V to VDIG Output capacitance Hi-Z state 15 pF POWER SUPPLIES VDIG Digital input voltage 4.75 5 5.25 V VANA Analog input voltage 4.75 5 5.25 V Must be ≤ V ANA IDIG Digital input current 4 mA IANA Analog input current 10 mA POWER DISSIPATION PWRD Low fS = 250 kHz 70 100 mW PWRD High 50 µW TEMPERATURE RANGE Specified performance -40 85 °C Derated performance(9) -55 125 °C Storage -65 150 °C THERMAL RESISTANCE ( Θ JA) SO 75 °C/W (9) The internal reference may not be started correctly beyond the industrial temperature range (-40°C to 85°C), therefore use of an external reference is recommended. 4 |
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