1FEATURES

2• (Typical 5V Supply, unless otherwise Noted.)

• Supply Voltage 2.7V to 5.5V

• Dynamic Power Mode Setting

• Continuously Programmable Supply Current

– Range 5 μA to 425 μA

• Continuously Programmable Bandwidth

– Range 73 kHz to 4.6 MHz

• Input Common Mode Voltage Range −0.3V to

3.8V

• CMRR 95 dB

• Rail-to-Rail Output Voltage Swing

• Input Offset Voltage 1 mV

APPLICATIONS

• AC Coupled Circuits

• Portable Instrumentation

• Active Filters

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 kHz, 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 fA and a common mode

input voltage which extends from the negative rail to

within 1.2V of the positive supply. The LPV531's railto-

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 SOT package, the

LPV531 is ideal for use in handheld electronics and

portable applications. The LPV531 is manufactured

using TI’s advanced VIP50 process.

A fixed supply current/gain bandwidth is available

upon request.