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LM7321 Datasheet(PDF) 22 Page - Texas Instruments

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Part # LM7321
Description  LM7321/LM7321Q Single/ LM7322/LM7322Q Dual Rail-to-Rail Input/Output 15V,High Output Current and Unlimited Capacitive Load Operational Amplifier
PDF  35 Pages
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

LM7321 Datasheet(HTML) 22 Page - Texas Instruments

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LM7321, LM7322
SNOSAW8D – MAY 2008 – REVISED MARCH 2013
www.ti.com
Figure 71. Output Sinking Characteristics with Load Lines
SETTLING TIME WITH LARGE CAPACITIVE LOADS
Figure 72 below shows a typical application where the LM7321/LM7321Q/LM7322/LM7322Q is used as a buffer
amplifier for the VCOM signal employed in a TFT LCD flat panel:
Figure 72. VCOM Driver Application Schematic
Figure 73 shows the time domain response of the amplifier when used as a VCOM buffer/driver with VREF at
ground. In this application, the op amp loop will try and maintain its output voltage based on the voltage on its
non-inverting input (VREF) despite the current injected into the TFT simulated load. As long as this load current is
within the range tolerable by the LM7321/LM7321Q/LM7322/LM7322Q (45 mA sourcing and 65 mA sinking for
±5V supplies), the output will settle to its final value within less than 2
μs.
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Product Folder Links: LM7321 LM7322



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