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User's Guide
SNAA051A–February 2008–Revised May 2013
AN-1767 LME49721 Evaluation Board
1 Introduction
This application report provides information on how to use the LME49721 demonstration board for
evaluation of the LME49721 Rail-to-Rail Input/Output, high performance, high fidelity operational amplifier.
The LME49721 demonstration board is designed for the user to fully evaluate the LME49721 in either
inverting, non-inverting, or unity gain voltage follower configuration. This board is shown in Figure 1.
2 General Description
The LME49721 is a low distortion (THD + N = 0.00008%, A
V
= 2, V
OUT
= 4V
P-P
, f
IN
= 1kHz), low noise
(4nV/√Hz) Rail-to-Rail Input/Output operational amplifier optimized and fully specified for high
performance, high fidelity applications. The Rail-to-Rail Input/Output operational amplifier delivers superior
signal amplification for outstanding performance. The LME49721 has a slew rate of ±8.5V/μs, an output
current capability of ±9.7mA, and an input bias current of 40fA. This operational amplifier can easily drive
10kΩ loads to within 10mV of each power supply voltage.
3 Operating Conditions
The LME49721 has a supply voltage range from +2.2V to +5.5V single supply or ±1.1V to ±2.75V dual
supply. Please note the demonstration board is designed for dual supply operation only.
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1
SNAA051A–February 2008–Revised May 2013 AN-1767 LME49721 Evaluation Board
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