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AD7938BCPZ Folha de dados(PDF) 6 Page - Analog Devices |
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AD7938BCPZ Folha de dados(HTML) 6 Page - Analog Devices |
6 / 36 page AD7938/AD7939 Data Sheet Rev. C | Page 6 of 36 Parameter Value1 Unit Test Conditions/Comments REFERENCE INPUT/OUTPUT VREF Input Voltage5 2.5 V ±1% for specified performance DC Leakage Current4 ±1 µA max External reference applied to pin VREFOUT Output Voltage 2.5 V ±0.2% max @ 25°C VREFOUT Temperature Coefficient 25 ppm/°C max 5 ppm/°C typ VREF Noise 10 µV typ 0.1 Hz to 10 Hz bandwidth 130 µV typ 0.1 Hz to 1 MHz bandwidth VREF Output Impedance 10 Ω typ VREF Input Capacitance 15 pF typ When in track 25 pF typ When in hold LOGIC INPUTS Input High Voltage, VINH 2.4 V min Input Low Voltage, VINL 0.8 V max Input Current, IIN ±5 µA max Typically 10 nA, VIN = 0 V or VDRIVE Input Capacitance, CIN4 10 pF typ LOGIC OUTPUTS Output High Voltage, VOH 2.4 V min ISOURCE = 200 µA Output Low Voltage, VOL 0.4 V max ISINK = 200 µA Floating-State Leakage Current ±3 µA max Floating-State Output Capacitance4 10 pF typ Output Coding Straight (natural) binary CODING bit = 0 Twos complement CODING bit =1 CONVERSION RATE Conversion Time t2 + 13 tCLKIN ns Track-and-Hold Acquisition Time 125 ns max Full-scale step input 80 ns typ Sine wave input Throughput Rate 1.5 MSPS max POWER REQUIREMENTS VDD 2.7/5.25 V min/max VDRIVE 2.7/5.25 V min/max IDD6 Digital inputs = 0 V or VDRIVE Normal Mode (Static) 0.8 mA typ VDD = 2.7 V to 5.25 V, SCLK on or off Normal Mode (Operational) 2.7 mA max VDD = 4.75 V to 5.25 V 2.0 mA max VDD = 2.7 V to 3.6 V Autostandby Mode 0.3 mA typ fSAMPLE = 100 kSPS, VDD = 5 V 160 µA typ Static Full/Autoshutdown Mode (Static) 2 µA max SCLK on or off Power Dissipation Normal Mode (Operational) 13.5 mW max VDD = 5 V 6 mW max VDD = 3 V Autostandby Mode (Static) 800 µW typ VDD = 5 V 480 µW typ VDD = 3 V Full/Autoshutdown Mode (Static) 10 µW max VDD = 5 V 6 µW max VDD = 3 V 1 Temperature range is −40°C to +85°C. 2 See the Terminology section. 3 For full common-mode range, see Figure 26 and Figure 27. 4 Sample tested during initial release to ensure compliance. 5 This device is operational with an external reference in the range of 0.1 V to VDD. See the Reference section for more details. 6 Measured with a midscale dc analog input. |
Nº de peça semelhante - AD7938BCPZ |
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Descrição semelhante - AD7938BCPZ |
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