Texas Instruments AN-1662 LMV551 User Manual

1 Introduction
The 551013116-001 evaluation board, is designed to aid in the characterization of Texas Instruments
LMV551 3 MHz, low voltage, low power, RR output op amp, that is available in the 5-Pin SC70 package.
The board layout allows for either inverting gain or non-inverting gain configurations. Use the evaluation
board as a:
• Guide to high frequency layout
• Tool to aid in device testing and characterization
2 Basic Operation
Figure 1 shows the basic configuration that allows either inverting gain or non-inverting gain operation.
The input signal is brought into the board through SMA connectors for either the inverting or non-inverting
input of the amplifier.
For non-inverting operation, the closed-loop gain is:
Non-Inverting gain: 1+
The value of the feedback resistor, R
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SNOA492A – July 2007 – Revised April 2013
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AN-1662 LMV551 Evaluation Board
R
F
R + R
G T
, has a strong influence on AC performance.
F
+V
1
+V
CC
-IN
5
1
+
U1
R
IN
3
-
2
+IN
R
G
R
T
1
-V
CC
-V
Figure 1. Evaluation Board Schematic
Copyright © 2007–2013, Texas Instruments Incorporated
SNOA492A – July 2007 – Revised April 2013
CC
C2
C6
C5
OUT
R
OUT
4
C
L
R
F
C4
C3
C1
CC
AN-1662 LMV551 Evaluation Board
User's Guide
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