LPV531_15 Datasheet, PDF (1/27 Pages) Texas Instruments – Programmable Micropower CMOS Input, Rail-to-Rail Output Operational Amplifier

LPV531
www.ti.com
SNOSAK5B – MARCH 2006 – REVISED MARCH 2013
LPV531 Programmable Micropower CMOS Input, Rail-to-Rail Output Operational Amplifier
Check for Samples: LPV531
FEATURES
1
•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
Typical Application
C1
R1
R2
V_IN
R3
+V
R4
-
+
C2
I_SEL
R_EXT
V_OUT
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 I_SEL pin using
a DAC or switching in different value resistors in
series with the I_SEL 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 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 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.
Figure 1. AC Coupled Application
1
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2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
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