LT119A/LT319A
LM119/LM319
Dual Comparator
FEATURES
n
n
n
n
n
DESCRIPTION
The LT
®
119A is an improved version of the LM119 dual
comparator. It features lower input offset voltage and
offset current, higher voltage gain, guaranteed common
mode rejection and input protection diodes.
The LT119A is capable of operation over a supply range
from 5V to ±15V and can drive 25mA loads from each
open collector output. A separate ground pin allows the
LT119A to isolate system grounds.
Linear Technology Corporation’s advanced processing,
design techniques and reliability make the LT119A/LT319A
an ideal choice over previous devices in most comparator
applications.
L,
LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
Guaranteed
Maximum 0.5mV Input Offset Voltage
Input Protection Diodes
Operates From Single 5V Supply
25mA Drive Capability
80ns Response Time
APPLICATIONS
n
n
n
n
Window Detectors
High Speed One Shot
Relay/Lamp Drivers
Voltage Controlled Oscillators
TYPICAL APPLICATION
Window Detector*
5V
OUTPUT
VOLTAGE (V)
V
UT
V
IN
3
Response Time For Various Input Overdrives
6
5
4
3
2
1
20mV
2mV
5mV
+
–
10
1
500
TTL OUTPUT
1/2 LT319A
4
2
8
INPUT
VOLTAGE (mV)
+
1/2 LT319A
6
7
V
OUT
= 5V FOR
V
LT
≤ V
IN
≤ V
UT
V
OUT
= 0V FOR
V
IN
≤ V
LT
OR V
IN
≤ V
UT
0
100
50
0
0
50
V
S
= ±15V
R
L
= 500
V
+ +
= 5V
T
A
= 25°C
V
LT
9
–
5
100 150 200 250 300 350
TIME (ns)
LT119/319 TA2
LT119/319 TA1
*
ALLOWED WINDOW FOR SINGLE 5V SUPPLY IS 1.2V TO 3.8V
119a319afc
1
LT119A/LT319A
LM119/LM319
ABSOLUTE MAXIMUM RATINGS
(Note 1)
Supply Voltage ..........................................................36V
Output to Negative Supply Voltage ...........................36V
Ground to Negative Supply Voltage ..........................25V
Ground to Positive Supply Voltage............................18V
Differential Input Voltage (Note 6) ............................±5V
Differential Input Current (Note 6) .........................±5mA
Input Voltage (Note 2)
Output Short-Circuit Duration ................................... 10s
Operating Temperature Range
LT119A, LM119 OBSOLETE .......... –55°C to 125°C
LT319A, LM319........................................ 0°C to 70°C
Storage Temperature Range .................. –65°C to 150°C
Lead Temperature (Soldering, 10 sec)................... 300°C
PIN CONFIGURATION
TOP VIEW
NC
NC
GND
+INPUT 1
–INPUT 1
V
–
OUTPUT 2
1
2
3
4
5
6
7
14 NC
13 NC
12 OUTPUT 1
11
9
8
V
+
+INPUT 2
GND 2
10 – INPUT 2
OUTPUT 1
GND 2
+INPUT 1 3
–INPUT 1
4
5
V
–
6
1
TOP VIEW
TOP VIEW
V
+
10
9
– INPUT 2
8 +INPUT 2
7 GND 2
OUTPUT 2
NC
NC
GND
+INPUT 1
–INPUT 1
V
–
OUTPUT 2
1
2
3
4
5
6
7
14 NC
13 NC
12 OUTPUT 1
11 V
+
10 – INPUT 2
9
8
+INPUT 2
GND 2
H PACKAGE
10-LEAD TO-5 METAL CAN
T
JMAX
= 150°C,
θ
JA
= 150°C/W,
θ
JC
= 45°C/W
N PACKAGE
14-LEAD PLASTIC DIP
T
JMAX
= 150°C,
θ
JA
= 100°C/W
J PACKAGE
14-LEAD CERAMIC DIP
T
JMAX
= 150°C,
θ
JA
= 100°C/W
OBSOLETE PACKAGE
OBSOLETE PACKAGE
ORDER INFORMATION
LEAD FREE FINISH
LT319AN#PBF
LM319N#PBF
LT119AH#PBF
LM119H#PBF
LT319AH#PBF
LM319H#PBF
LT119AJ#PBF
LM119J#PBF
LT319AJ#PBF
LM319J#PBF
PART MARKING
LT319AN
LM319N
LT119AH
LM119H
LT319AH
LM319H
LT119AJ
LM119J
LT319AJ
LM319J
PACKAGE DESCRIPTION
14-Lead Plastic DIP
14-Lead Plastic DIP
OBSOLETE PACKAGES
10-Lead TO-5 Metal Can
10-Lead TO-5 Metal Can
10-Lead TO-5 Metal Can
10-Lead TO-5 Metal Can
14-Lead Ceramic DIP
14-Lead Ceramic DIP
14-Lead Ceramic DIP
14-Lead Ceramic DIP
–55°C to 125°C
–55°C to 125°C
0°C to 70°C
0°C to 70°C
–55°C to 125°C
–55°C to 125°C
0°C to 70°C
0°C to 70°C
SPECIFIED TEMPERATURE RANGE
0°C to 70°C
0°C to 70°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
Consult LTC Marketing for information on nonstandard lead based finish parts.
For more information on lead free part markings, go to:
http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to:
http://www.linear.com/tapeandreel/
119a319afc
2
LT119A/LT319A
LM119/LM319
The
l
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
SYMBOL
V
OS
PARAMETER
Input Offset Voltage
CONDITIONS
V
S
= ±15V, V
CM
= 0
(Note 4)
l
ELECTRICAL CHARACTERISTICS
CMRR
I
OS
I
B
A
V
V
SAT
Common Mode Rejection Ratio
Input Offset Current
Input Bias Current
Voltage Gain
Response Time
Saturation Voltage
(Note 4)
l
(Note 4)
l
Output Leakage Current
Input Voltage Range
Differential Input Voltage
Supply Current
Positive Supply Current
Negative Supply Current
(Note 5)
V
IN
≤ –5mV, I
O
= 25mA,
V
+
≥ 4.5V, V
–
= 0V
V
IN
≤ –6mV, I
SINK
≤ 3.2mA
T
A
≥ 0°C
T
A
≤ 0°C
V
IN
≥ 5mV, V
OUT
to V
–
= 35V
l
LT119A
MIN
TYP MAX
0.3
0.5
0.5
1.0
1.2
2.0
90
106
20
40
75
150
500
1000
20
40
80
0.75
1.5
0.23
0.2
1
±13
0.4
0.6
2
10
12
3
±5
11.5
4.5
LM119
MIN
TYP MAX
4
0.7
4
7
30
150
10
40
80
0.75
0.23
0.2
1
±13
75
100
500
1000
1.5
0.4
0.6
2
10
12
3
±5
11.5
4.5
SYMBOL
mV
mV
mV
dB
nA
nA
nA
nA
V/mV
ns
V
V
V
µA
µA
V
V
V
mA
mA
mA
V
S
= ±15V
V
+
= 5V, V
–
= 0V
V
+
= 5V, V
–
= 0V
V
S
= ±15V
V
S
= ±15V
l
l
l
–12
1
–12
1
I
S
4.3
8
3
4.3
8
3
The
l
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
SYMBOL
V
OS
PARAMETER
Input Offset Voltage
CONDITIONS
V
S
= ±15V, V
CM
= 0V
R
S
≤ 5k
(Note 4)
(Note 4)
l
l
CMRR
I
OS
I
B
A
V
V
SAT
Common Mode Rejection Ratio
Input Offset Current
Input Bias Current
Voltage Gain
Response Time
Saturation Voltage
(Note 4)
l
Output Leakage Current
Input Voltage Range
Differential Input Voltage
Supply Current
Positive Supply Current
Negative Supply Current
(Note 5)
V
IN
≤ –10mV, I
SINK
= 25mA
V
+
≥ 4.5V, V
–
= 0V,
V
IN
≤ –10mV, I
SINK
≤ 3.2mA
V
IN
≥ 10mV, V
OUT
to V
–
= 35V
V
S
= ±15V
V
+
= 5V, V
–
= 0V
V
+
= 5V, V
–
= 0V
V
S
= ±15V
V
S
= ±15V
l
LT319A
MIN
TYP MAX
0.3
0.5
0.5
1
2
90
106
30
40
60
150
500
1000
20
40
80
0.75
1.5
0.3
0.4
0.2
±13
10
3
±5
12.5
5
LM319
MIN
TYP MAX
8
2
8
10
80
250
8
40
80
0.75
0.3
0.2
±13
200
300
1000
1200
1.5
0.4
10
3
±5
12.5
5
SYMBOL
mV
mV
mV
dB
nA
nA
nA
nA
V/mV
ns
V
V
µA
V
V
V
mA
mA
mA
119a319afc
l
l
l
1
1
I
S
4.3
8
3
4.3
8
3
3
LT119A/LT319A
LM119/LM319
ELECTRICAL CHARACTERISTICS
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
Note 2:
For supply voltages less than ±15V, the maximum input voltage is
equal to the supply voltage.
Note 3:
Unless otherwise noted, supply voltage equals ±15V and
V
CM
= 0V, T
A
= 25°C. The ground pin is grounded. Note that the maximum
voltage allowed between the ground pin and V
+
is 18V. Do not tie the
ground pin to V
–
when the power supply voltage exceeds ±9V. The offset
voltage, offset current and bias current specifications apply for all supply
voltages between ±15V and 5V unless otherwise specified.
Note 4:
The offset voltages and currents given are the maximum values
required to drive the output within 1V of either supply with a 1mA load,
thus these parameters define an error band and take into account the
worst case effects of voltage gain and input impedance.
Note 5:
Response time specified is for a 100mV input step with 5mV
overdrive.
Note 6:
Inputs are protected with back-to-back 5.6V zener diodes. This
limits maximum differential input voltage to ±5V if current is unlimited.
Larger differential input drive is allowed if input current is limited to ±5mA
with external resistance.
TYPICAL PERFORMANCE CHARACTERISTICS
Transfer Function
40
35
OUTPUT VOLTAGE HIGH (V)
30
25
20
15
10
5.0
0
–1.0
–0.6
0.2
0.6
–0.2
DIFFERENTIAL INPUT VOLTAGE (mV)
V
S
= ±15V
R
L
= 1.4k
T
A
= 25°C
V
+ +
= 36V
8
7
6
5
4
3
2
1
0
1.0
–100
–10
INPUT BIAS CURRENT (nA)
300
INPUT CURRENT (nA)
OUTPUT VOLTAGE LOW (V)
400
Input Characteristics
V
S
= ±15V
T
A
= 25°C
250
200
Input Currents
V
S
= ±15V
V
+ +
= 5V
BIAS
150
200
100
0
100
50
OFFSET
0
– 55 –35 –15
MAXIMUM
DIFFERENTIAL
INPUT VOLTAGE
–6
2
6
–2
DIFFERENTIAL INPUT VOLTAGE (V)
10
5 25 45 65 85 105 125
TEMPERATURE (°C)
LT119/319 G3
LT119/319 G1
LT119/319 G2
Response Time for Various
Input Overdrives
6
5
OUTPUT
VOLTAGE (V)
4
3
2
1
INPUT
VOLTAGE (mV)
INPUT
VOLTAGE (mV)
0
0
–50
20mV
2mV
5mV
V
S
= ±15V
R
L
= 500
V
+ +
= 5V
T
A
= 25°C
6
5
OUTPUT
VOLTAGE (V)
4
3
2
1
0
100
50
0
Response Time for Various
Input Overdrives
6
5
2mV
5mV
20mV
V
S
= 5V
R
L
= 500
V
++
= 5V
T
A
= 25°C
OUTPUT
VOLTAGE (V)
4
3
2
1
INPUT
VOLTAGE (mV)
0
0
–50
Response Time for Various
Input Overdrives
V
S
= 5V
R
L
= 500
V
+ +
= 5V
T
A
= 25°C
20mV
5mV
2mV
–100
0
50
100 150 200 250 300 350
TIME (ns)
LT119/319 G4
–100
0
50
100 150 200 250 300 350
TIME (ns)
LT119/319 G6
0
50
100 150 200 250 300 350
TIME (ns)
LT119/319 G5
119a319afc
4
LT119A/LT319A
LM119/LM319
TYPICAL PERFORMANCE CHARACTERISTICS
Output Saturation Voltage
25
T
J
= 25°C
20
OUTPUT CURRENT (mA)
SUPPLY CURRENT (mA)
10
8
6
4
2
0
NEGATIVE SUPPLY
12
T
J
= 25°C
SHORT-CIRCUIT CURRENT (mA)
100
80
60
40
20
0
POWER DISSIPATION
Supply Current
120
Output Limiting Characteristics
1.2
T
J
= 25°C
SHORT-CIRCUIT CURRENT
AFTER 3 MINUTES
1.0
POWER DISSIPATION (W)
0.8
0.6
0.4
0.2
0
15
LT119/319 G9
15
POSITIVE SUPPLY
10
5
V
S
= ±15V
INPUT OVERDRIVE = 5mV
0
0.2
0.6
0.8
0.4
OUTPUT VOLTAGE (V)
1.0
0
0
15
5
10
SUPPLY VOLTAGE (V)
20
LT119/319 G8
0
5
10
OUTPUT VOLTAGE (V)
LT119/319 G7
Common Mode Limits
V
+
Supply Current
12
10
SUPPLY CURRENT (mA)
POSITIVE SUPPLY = 15V
8
6
4
2
NEGATIVE SUPPLY = –15V
–0.4
COMMON-MODE LIMITS (V)
–0.8
–1.2
–1.6
–2.0
1.2
0.8
0.4
V
–
– 55 – 35 –15
V
S
= ±15V
V
+
= 5V, V
–
= 0V
REFERRED TO SUPPLY VOLTAGES
POSITIVE SUPPLY = 5V, V
–
= 0V
V
S
= ±15V, V
+
= 5V, V
–
= 0V
5
25 45 65 85 105 125
TEMPERATURE (°C)
LT119/319 G10
0
– 55 – 35 –15
5
25 45 65 85 105 125
TEMPERATURE (°C)
LT119/319 G11
TYPICAL APPLICATIONS
Relay Driver
5V
10
INPUTS
28V
68k
7
8
35V
60Hz
INPUT
10V
P-P
(TYP)
1N4148
20k
0.15µF
3.3k
High Noise Immunity 60Hz Sync Circuit
5V
–
+
6
11
9
1/2 LT319A
10
–
+
6
11
8
9
1/2 LT319A
7
OUTPUT
10k
LT119/319 TA3
10k
LT119/319 TA4
119a319afc
5
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
