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LPV531

更新时间： 2024-11-24 02:58:51
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德州仪器 - TI /
页数 文件大小 规格书
27页 970K
描述
Programmable Micropower CMOS Input, Rail-to-Rail Output Operational Amplifier

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LPV531 数据手册

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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  
1
FEATURES  
DESCRIPTION  
2
•
(Typical 5V Supply, unless otherwise Noted.)  
Supply Voltage 2.7V to 5.5V  
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.  
•
•
•
Dynamic Power Mode Setting  
Continuously Programmable Supply Current  
–
Range 5 μA to 425 μA  
Continuously Programmable Bandwidth  
Range 73 kHz to 4.6 MHz  
•
•
–
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.  
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  
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.  
Typical Application  
C1  
R1  
R2  
V
IN  
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.  
-
R3  
V
OUT  
+V  
+
A fixed supply current/gain bandwidth is available  
upon request.  
C2  
I
SEL  
R4  
R
EXT  
Figure 1. AC Coupled Application  
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
2
All trademarks are the property of their respective owners.  
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.  
Copyright © 2006–2013, Texas Instruments Incorporated  
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