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LMV393IDR Datasheet(PDF) 9 Page - Texas Instruments |
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LMV393IDR Datasheet(HTML) 9 Page - Texas Instruments |
9 / 39 page IN+ IN− OUT GND R1 Q1 Q3 Q7 Q6 VCC+ Q2 Q4 Q5 R2 R3 Q8 Q9 LMV331, LMV393, LMV339 www.ti.com SLCS136T – AUGUST 1999 – REVISED JANUARY 2015 8 Detailed Description 8.1 Overview The LMV331, LMV393 and LMV339 family of comparators have the ability to operate up to 5 V on the supply pin. This standard device has proven ubiquity and versatility across a wide range of applications. This is due to it's low Iq and fast response. The open-drain output allows the user to configure the output's logic low voltage (VOL) and can be utilized to enable the comparator to be used in AND functionality. 8.2 Functional Block Diagram 8.3 Feature Description The LMV331, LMV393 and LMV339 consists of a PNP input, whose Vbe creates a limit on the input common mode voltage capability, allowing LMV33x to accurately function from ground to VCC–Vbe(~700mV) differential input. This enables much head room for modern day supplies of 3.3 V and 5.0 V. The output consists of an open drain NPN (pull-down or low side) transistor. The output NPN will sink current when the positive input voltage is higher than the negative input voltage and the offset voltage. The VOL is resistive and will scale with the output current. Please see Figure 3 for VOL values with respect to the output current. 8.4 Device Functional Modes 8.4.1 Voltage Comparison The LMV33x operates solely as a voltage comparator, comparing the differential voltage between the positive and negative pins and outputs a logic low or high impedance (logic high with pull-up) based on the input differential polarity. Copyright © 1999–2015, Texas Instruments Incorporated Submit Documentation Feedback 9 |
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