LPV531 Datasheet | National Semiconductor

Description The LPV531 is an extremely versatile operational amplifier. A single external resistor gives the system designer the ability to define the quiescent current, gain bandwidth product and output short circuit current. This innovative feature gives the system designer a method to dynamically switch the power level to optimize the performance of the op amp and meet the system design requirements. The LPV531 can be tailored to a wide variety of applications. It offers the system designer the ability to dynamically trade off supply current for bandwidth by adjusting the current drawn from the ISEL pin using a DAC or switching in different value resistors in series with the ISEL pin. The LPV531 is capable of operating from 73 k Hz, consuming only 5 µA, to as fast as 4.6 MHz, consuming only 425 µA. The input offset voltage is relatively independent and therefore is not significantly affected by the chosen power level. Utilizing a CMOS input stage, the LPV531 achieves an input bias current of 50 f A and a mon mode input voltage which extends from the negative rail to within 1.2V of the positive supply. The LPV531’s rail-to-rail class AB output stage enables this op amp to offer maximum dynamic range at low supply voltage. Offered in the space saving 6-pin TSOT23 package, the LPV531 is ideal for use in handheld electronics and portable applications. The LPV531 is manufactured using National’s advanced VIP50 process. A fixed supply current/gain bandwidth is available upon request. Features (Typical 5V supply, unless otherwise noted.) n Supply voltage 2.7V to 5.5V n Dynamic power mode setting n Continuously programmable supply current - Range 5 µA to 425 µA n Continuously programmable bandwidth - Range 73 k Hz to 4.6 MHz n Input mon mode voltage range - 0.3V to 3.8V n CMRR 95 d B n Rail-to-rail output voltage swing n Input offset voltage 1 m V Applications n AC coupled circuits n Portable instrumentation n Active filters Typical Application AC Coupled...