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ADC32RF83 데이터시트(PDF) 30 Page - Texas Instruments |
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ADC32RF83 데이터시트(HTML) 30 Page - Texas Instruments |
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30 / 138 page ![]() VCM INxP INxM RDC / 2 RDC / 2 ADC32RF80 IDIFF To Analog Buffer To Analog Buffer Clamp Circuit Copyright © 2016, Texas Instruments Incorporated Input Vcm INP INM +337.5 mV ±337.5 mV +600 mV ±600 mV 675 mVPP for INP and INM (1.35 VPP Differentially) 30 ADC32RF80, ADC32RF83 SBAS774A – MAY 2016 – REVISED DECEMBER 2016 www.ti.com Product Folder Links: ADC32RF80 ADC32RF83 Submit Documentation Feedback Copyright © 2016, Texas Instruments Incorporated Feature Description (continued) 8.3.1.1 Input Clamp Circuit The ADC32RF8x analog inputs include an internal, differential clamp for overvoltage protection. The clamp triggers for any input signals at approximately 600 mV above the input common-mode voltage, effectively limiting the maximum input signal to approximately 2.4 VPP, as shown in Figure 85 and Figure 86. When the clamp circuit conducts, the maximum differential current flowing through the circuit (via input pins) must be limited to 20 mA. Figure 85. Clamp Circuit in the ADC32RF8x Figure 86. Clamp Response Timing Diagram |
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