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LM612IN Datasheet

  • LM612IN

  • Dual-Channel Comparator and Reference

  • 246.75KB

  • 10頁

  • NSC

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LM612 Dual-Channel Comparator and Reference
February 1995
LM612
Dual-Channel Comparator and Reference
General Description
The dual-channel comparator consists of two individual
comparators having an input voltage range that extends
down to the negative supply voltage V
b
The common
open-collector output can be driven low by either half of the
LM612 This configuration makes the LM612 ideal for use
as a window comparator The input stages of the compara-
tor have lateral PNP input transistors which maintain low
input currents for large differential input voltages and swings
above V
a
The 1 2V voltage reference referred to the V
b
terminal is a
two-terminal shunt-type band-gap similar to the LM185-1 2
series with voltage accuracy of
g
0 6% available The refer-
ence features operation over a shunt current range of 17
mA
to 20 mA low dynamic impedance and broad capacitive
load range
As a member of National鈥檚 Super-Block
TM
family the
LM612 is a space-saving monolithic alternative to a multi-
chip solution offering a high level of integration without sac-
rificing performance
Features
COMPARATORS
Y
Low operating current
Y
Wide supply voltage range
Y
Open-collector outputs
Y
Input common-mode range
Y
Wide differential input voltage
REFERENCE
Y
Fixed output voltage
Y
Tight initial tolerance available
Y
Wide operating current range
Y
Tolerant of load capacitance
300
mA
4V to 36V
V
b
to (V
a
b
1 8V)
g
36V
1 24V
g
0 6% (25 C)
17
mA
to 20 mA
Applications
Y
Y
Y
Voltage window comparator
Power supply voltage monitor
Dual-channel fault monitor
Connection Diagram
TL H 11058 鈥?1
Top View
Ordering Information
For information about surface-mount packaging of this device please contact the Analog Product Marketing group at
National Semiconductor Corporation headquarters
Temperature Range
Military
b
55 C
s
T
J
s
a
125 C
g
0 6% at 25 C
80 ppm C Max
Reference
Tolerances
Industrial
b
40 C
s
T
J
a
85 C
Package
NSC
Package
Number
N08E
J08A
N08E
M08A
LM612AMN
LM612AMJ 883
(Note 13)
LM612AIN
8-Pin
Molded DIP
8-Pin
Ceramic DIP
g
2 0% at 25 C
150 ppm C Max
LM612MN
LM612IN
LM612IM
8-Pin
Molded DIP
8-Pin Narrow
Surface Mount
Super-Block
TM
is a trademark of National Semiconductor Corporation
C
1995 National Semiconductor Corporation
TL H 11058
RRD-B30M115 Printed in U S A

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