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PDF LM139QML Data sheet ( Hoja de datos )
| Número de pieza | LM139QML | |
| Descripción | Low Power Low Offset Voltage Quad Comparators | |
| Fabricantes | National Semiconductor | |
| Logotipo |  |
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LM139AQML
LM139QML
October 15, 2010
Low Power Low Offset Voltage Quad Comparators
General Description
The LM139 series consists of four independent precision volt-
age comparators with an offset voltage specification as low
as 2 mV max for all four comparators. These were designed
specifically to operate from a single power supply over a wide
range of voltages. Operation from split power supplies is also
possible and the low power supply current drain is indepen-
dent of the magnitude of the power supply voltage. These
comparators also have a unique characteristic in that the input
common-mode voltage range includes ground, even though
operated from a single power supply voltage.
Application areas include limit comparators, simple analog to
digital converters; pulse, squarewave and time delay gener-
ators; wide range VCO; MOS clock timers; multivibrators and
high voltage digital logic gates. The LM139 series was de-
signed to directly interface with TTL and CMOS. When oper-
ated from both plus and minus power supplies, they will
directly interface with MOS logic— where the low power drain
of the LM139/LM139A is a distinct advantage over standard
comparators.
Features
■ Available with Radiation Guarantee
— Total Ionizing Dose
100 krad(Si)
— ELDRS Free
100 krad(Si)
■ Wide supply voltage range
■ LM139/139A Series
2 to 36 VDC or ±1 to ±18 VDC
■ Very low supply current drain (0.8 mA) — independent of
supply voltage
■ Low input biasing current:
25 nA
■ Low input offset current:
±5 nA
■ Offset voltage:
±1 mV
■ Input common-mode voltage range includes GND
■ Differential input voltage range equal to the power supply
voltage
■ Low output saturation voltage:
250 mV at 4 mA
■ Output voltage compatible with TTL, DTL, ECL, MOS and
CMOS logic systems
Advantages
■ High precision comparators
■ Reduced VOS drift over temperature
■ Eliminates need for dual supplies
■ Allows sensing near GND
■ Compatible with all forms of logic
■ Power drain suitable for battery operation
Ordering Information
NS Part Number
LM139E/883
LM139J/883
LM139AW-SMD
LM139AWG-SMD
LM139AE/883
LM139AJ/883
LM139AJRQMLV (Note 11)
LM139AJRLQMLV (Note 15)
ELDRS Free
LM139AW-QMLV
LM139AW/883
LM139AWG-QMLV
LM139AWG/883
LM139AWGRQMLV (Note 11)
LM139AWGRLQMLV (Note 15)
ELDRS Free
LM139AWRQMLV (Note 11)
SMD Part Number
5962–8773901DA
5962–8773901XA
5962R9673801VCA
100 krad(Si)
5962R9673802VCA
100 krad(Si)
5962–9673801VDA
5962–9673801VXA
5962R9673801VXA
100 krad(Si)
5962R9673802VXA
100 krad(Si)
5962R9673801VDA
100 krad(Si)
NS Package Number Package Description
E20A
20 terminal Leadless Chip Carrier
J14A
14LD CERDIP
W14B
14LD CERPACK
WG14A
14LD Ceramic SOIC
E20A
20 terminal Leadless Chip Carrier
J14A
14LD CERDIP
J14A
14LD CERDIP
J14A
W14B
W14B
WG14A
WG14A
WG14A
14LD CERDIP
14LD CERPACK
14LD CERPACK
14LD Ceramic SOIC
14LD Ceramic SOIC
14LD Ceramic SOIC
WG14A
14LD Ceramic SOIC
W14B
14LD CERPACK
© 2010 National Semiconductor Corporation 201221
www.national.com
www.DataSheet.in
1 page  
LM139 883 Electrical Characteristics
DC Parameters
The following conditions apply, unless otherwise specified. +V = 5V, VCM = 0V
Symbol Parameters
Conditions
Notes
Min Max
ICC
VIO
CMRR
PSRR
± IBias
IIO
ICEX
ISink
VSat
AV
VCM
VDiff
Supply Current
Supply Current
Input Offset Voltage
RL = Infinity
+V = 30V, RL = Infinity
+V = 30V
+V = 30V, VCM = 28.5V
+V = 30V, VCM = 28.0V
Common Mode Rejection Ratio
Power Supply Rejection Ratio
Input Bias Current
+V = 30V, VCM = 0V to 28.5V
+V = 5V to 30V
VO = 1.5V
Input Offset Current
VO = 1.5V
(Note 6)
(Note 6)
Output Leakage Current
Output Sink Current
Saturation Voltage
+V = 30V, VO = 30V
VO = 1.5V
ISink = 4mA
Voltage Gain
Common Mode Voltage Range
+V = 15V, RL ≥ 15ΩK, VI = 1V to
11V
+V = 30V
(Note 9)
Differential Input Voltage
(Note 9)
+V = 30V, -V = 0V, +VI = 36V, -VI (Note 10)
= 0V
+V = 30V, -V = 0V, +VI = 0V, -VI = (Note 10)
36V
-5.0
-9.0
-5.0
-9.0
-5.0
-9.0
60
60
-100
-300
-25
-100
6.0
50
0
0
2.0
2.0
5.0
9.0
5.0
9.0
5.0
9.0
-1.0
-1.0
25
100
1.0
400
700
V+ -
(1.5)
V+ -
(2.0)
500
500
AC Parameters
The following conditions apply, unless otherwise specified. +V = 5V
Symbol Parameters
Conditions
tRLH Response Time
tRHL Response Time
VOD = 5mV
VOD = 50mV
VOD = 5mV
VOD = 50mV
Notes
Min Max
5.0
0.8
2.5
0.8
Unit
mA
mA
mV
mV
mV
mV
mV
mV
dB
dB
nA
nA
nA
nA
µA
mA
mV
mV
V/mV
V
V
nA
nA
Unit
µS
µS
µS
µS
Sub-
groups
1, 2, 3
1, 2, 3
1
2, 3
1
2, 3
1
2, 3
1
1
1
2, 3
1
2, 3
1, 2, 3
1
1
2, 3
1
1
2, 3
1, 2, 3
1, 2, 3
Sub-
groups
9
9
9
9
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5 www.national.com
5 Page 
Application Hints
The LM139 series are high gain, wide bandwidth devices
which, like most comparators, can easily oscillate if the output
lead is inadvertently allowed to capacitively couple to the in-
puts via stray capacitance. This shows up only during the
output voltage transition intervals as the comparator changes
states. Power supply bypassing is not required to solve this
problem. Standard PC board layout is helpful as it reduces
stray input-output coupling. Reducing this input resistors to <
10 kΩ reduces the feedback signal levels and finally, adding
even a small amount (1 to 10 mV) of positive feedback (hys-
teresis) causes such a rapid transition that oscillations due to
stray feedback are not possible. Simply socketing the IC and
attaching resistors to the pins will cause input-output oscilla-
tions during the small transition intervals unless hysteresis is
used. If the input signal is a pulse waveform, with relatively
fast rise and fall times, hysteresis is not required.
All pins of any unused comparators should be tied to the neg-
ative supply.
The bias network of the LM139 series establishes a drain
current which is independent of the magnitude of the power
supply voltage over the range of from 2 VDC to 30 VDC.
It is usually unnecessary to use a bypass capacitor across the
power supply line.
The differential input voltage may be larger than V+ without
damaging the device. Protection should be provided to pre-
vent the input voltages from going negative more than −0.3
VDC (at 25°C). An input clamp diode can be used as shown
in the applications section.
The output of the LM139 series is the uncommitted collector
of a grounded-emitter NPN output transistor. Many collectors
can be tied together to provide an output OR'ing function. An
output pull-up resistor can be connected to any available
power supply voltage within the permitted supply voltage
range and there is no restriction on this voltage due to the
magnitude of the voltage which is applied to the V+ terminal
of the LM139A package. The output can also be used as a
simple SPST switch to ground (when a pull-up resistor is not
used). The amount of current which the output device can sink
is limited by the drive available (which is independent of V+)
and the β of this device. When the maximum current limit is
reached (approximately 16 mA), the output transistor will
come out of saturation and the output voltage will rise very
rapidly. The output saturation voltage is limited by the ap-
proximately 60Ω RSAT of the output transistor. The low offset
voltage of the output transistor (1 mV) allows the output to
clamp essentially to ground level for small load currents.
Typical Applications
(V+ = 5.0 VDC)
Basic Comparator
www.DataSheet.in
20122103
11
Driving CMOS
Driving TTL
20122104
AND Gate
20122105
OR Gate
20122108
20122109
www.national.com
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet LM139QML.PDF ] | |
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