Datasheet

REF
1
2
3
4 5
6
7
8
+IN
-IN
GND
OUT
V
+
H
YSTP
H
YSTN
LMP7300
SNOSAT7F –AUGUST 2007–REVISED MARCH 2013 www.ti.com
CONNECTION DIAGRAM
Top View
Figure 1. 8-Pin VSSOP (See DGK Package)
8-Pin SOIC (See D Package)
Pin Descriptions
Symbol Pin Name Description
The +IN has a common-mode voltage range from 1V above the negative rail to, and including, the
Non-Inverting Comparator positive rail. Internal ESD diodes, connected from the +IN pin to the rails, protect the input stage
+IN
Input from overvoltage. If the input voltage exceeds the rails, the diodes turn on and clamp the input to a
safe level.
The −IN has a common-mode voltage range from 1V above the negative rail to, and including, the
positive rail. Internal ESD diodes, connected from the −IN pin to the rails, protects the input stage
−IN Inverting Comparator Input
from overvoltage. If the input voltage exceeds the rails, the diodes turn on and clamp the input to a
safe level.
This pin may be connected to a negative DC voltage source for applications requiring a dual
supply. If connected to a negative supply, decouple this pin with 0.1 µF ceramic capacitor to
GND Ground
ground. The internal reference output voltage is referenced to this pin. GND is the die substrate
connection.
The output is an open-collector. It can drive voltage loads by using a pullup resistor, or it can drive
OUT Comparator Output current loads by sinking a maximum output current. This pin may be taken to a maximum of +12V
with respect to the ground pin, irrespective of supply voltage.
This pin sets the lower trip voltage V
IL
. The common mode range is from 1V above the negative
HYSTN Negative Hysteresis Pin
rail to V
CC
. The input signal must fall below V
IL
for the comparator to switch from high to low state.
This pin sets the upper trip voltage V
IH
. The common mode range is from 1V above the negative
HYSTP Positive Hysteresis pin rail to V
CC
. The input signal must rise above V
IH
for the comparator to switch from low to high
state.
Reference Voltage Output This is the output pin of a 2.048V band gap precision reference.
REF
Pin
The supply voltage range is 2.7V to 12V. Decouple this pin with 0.1 μF ceramic capacitor to
V
+
Positive Supply Terminal
ground.
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