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AD7934 Folha de dados(PDF) 6 Page - Analog Devices |
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AD7934 Folha de dados(HTML) 6 Page - Analog Devices |
6 / 32 page AD7933/AD7934 Rev. B | Page 6 of 32 Parameter Value1 Unit Test Conditions/Comments REFERENCE INPUT/OUTPUT VREF Input Voltage5 2.5 V ±1% specified performance DC Leakage Current ±1 μA max 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-and-hold 25 pF typ When in track-and-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 max 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 max Output Coding Straight (natural) binary CODING bit = 0 Twos complement CODING bit = 1 CONVERSION RATE Conversion Time t2 + 13 tCLK 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 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 VCM is the common-mode voltage. For full common-mode range, see Figure 25 and Figure 26. VIN+ and VIN− must always remain within GND/VDD. 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 information. 6 Measured with a midscale dc analog input. |
Nº de peça semelhante - AD7934_15 |
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Descrição semelhante - AD7934_15 |
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