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.