Datasheet

LMV7272 (DSBGA)
(Bottom Layer)
C1 (Top Layer)
LMV7272
OUTB
-INB
+INB
V
-
V
+
OUTA
-INA
+INA
-INB
+INB
OUT B
-INA
+INA
OUT A
V
-
V
+
LMV7271
SNOSA56H –FEBRUARY 2003–REVISED FEBRUARY 2013 www.ti.com
Figure 31. Typical PCB Layout
5. When the signal source is applied through a resistive network to one input of the comparator, it is usually
advantageous to connect the other input with a resistor with the same value, for both DC and AC
consideration. Input traces should be laid out symmetrically if possible.
6. All pins of any unused comparators should be tied to the negative supply.
DSBGA LIGHT SENSITIVITY
Exposing the DSBGA device to direct sunlight will cause mis-operation of the device. Light sources such as
Halogen lamps can also affect electrical performance if brought near to the device. The wavelengths, which have
the most detrimental effect, are reds and infrareds.
DSBGA MOUNTING
The DSBGA package requires specific mounting techniques, which are detailed in Application Note AN-1112
(SNVA009).
LMV7272 DSBGA to DIP Conversion Board
To facilitate characterization and testing, a DSBGA to DIP conversion board, LMV7272TLCONV, is available. It is
a 2-layer board, with the LMV7272 mounted on the bottom layer, and a capacitor (C1, between the positive and
negative supplies) added to the top layer.
Figure 32. LMV7272TLCONV Diagram
Typical Applications
UNIVERSAL LOGIC LEVEL SHIFTER
The output of LMV7275 is an unconnected drain of an NMOS device, which can be pulled up, through a resistor,
to any desired output level within the permitted power supply range. Hence, the following simple circuit works as
a universal logic level shifter, pulling up the signal to the desired level.
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