LMV7251

LMV7251/LMV7255 1.8V Low Voltage Comparator with Rail-to-Rail Input January 2001 LMV7251/LMV7255 1.8V Low Voltage Comparator with Rail-to-Rail Input General Description The LMV7251/LMV7255 are rail-to-rail input low voltage comparators, which can operate at supply voltage range of 1.8V to 5.0V. The LMV7251/LMV7255 are available in space saving SC-70 or SOT23-5 packages. These comparators are ideal for low voltage and space critical designs. The LMV7251 features a push-pull output stage. This feature allows operation with minimum power consumption when driving a load. The LMV7255 features an open drain output. This allows the connection of an external resistor at the output. The output of the comparator can be used as a level shifter. The IC’s are built with National Semiconductor’s advance Submicron Silicon-Gate BiCMOS process. The LMV7251/LMV7255 have bipolar inputs for improved noise performance and CMOS outputs for better rail-to-rail output performance. Features (VS = 1.8V, TA = 25˚C, Typical values unless specified). n Single or Dual Supplies n Low supply voltage 1.8V to 5.0V n Ultra low supply current 11µA n Low input bias current 14nA n Low input offset current 200pA n Low input offset voltage +/−0.3mV n Response time 670ns (20mV overdrive) n Input common mode voltage 0.1V beyond rails Applications n n n n Mobile communications Laptops and PDA’s Battery powered electronics General purpose low voltage applications Typical Circuit Connection Diagram DS200057-1 To...