1
LT119A/LT319A
LM119/LM319
■
Guaranteed
Maximum 0.5mV Input Offset Voltage
■
Input Protection Diodes
■
Operates From Single 5V Supply
■
25mA Drive Capability
■
80ns Response Time
The LT119A 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.
Dual Comparator
FEATURES
DESCRIPTION
U
■
Window Detectors
■
High Speed One Shot
■
Relay/Lamp Drivers
■
Voltage Controlled Oscillators
APPLICATIONS
U
TYPICAL APPLICATION
U
–
+
–
+
5V
500Ω
TTL OUTPUT
LT119/319 TA1
1
10
3
4
8
9
5
7
6
2
1
/
2
LT319A
1
/
2
LT319A
V
UT
V
OUT
= 5.0V FOR
V
LT
≤ V
IN
≤ V
UT
V
OUT
= 0V FOR
V
IN
≤ V
LT
OR V
IN
≤ V
UT
V
IN
V
LT
*
ALLOWED WINDOW FOR SINGLE +5V SUPPLY IS 1.2V TO 3.8V
Window Detector*
TIME (ns)
0
INPUT
VOLTAGE (mV) OUTPUT
VOLTAGE (V)
50
0
1
2
4
50 150 200
LT119/319 TA2
100
5
6
3
0 100 250 300 350
20mV
2mV
5mV
VS = ±15V
RL = 500Ω
V++ = 5V
TA = 25°C
Response Time for Various Input Overdrives
2
LT119A/LT319A
LM119/LM319
PACKAGE/ORDER INFORMATION
W
UU
ABSOLUTE MAXIMUM RATINGS
W
WW
U
T
JMAX
= 150°C, θ
JA
= 150°C/ W, θ
Jc
= 45°C/W
1
2
3
4
5
6
7
TOP VIEW
J PACKAGE
14-LEAD CERAMIC DIP N PACKAGE
14-LEAD PLASTIC DIP
14
13
12
11
10
9
8
NC
NC
GND
+INPUT
–INPUT
V–
OUTPUT 2
NC
NC
OUTPUT 1
V+
–INPUT 2
+INPUT 2
GND 2
T
JMAX
= 150°C, θ
JA
= 100°C/W (J)
T
JMAX
= 85°C, θ
JA
= 100°C/W (N)
ELECTRICAL CHARACTERISTICS
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 5) .......................... ±5V
Differential Input Current (Note 5) ........................±5mA
Input Voltage (Note 1)
Output Short-Circuit Duration................................... 10s
Operating Temperature Range
LT119A, LM119............................... – 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
Consult factory for Industrial and Military grade parts.
LT119A LT119
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
V
OS
Input Offset Voltage V
S
= ±15V, V
CM
= 0 0.3 0.5 4 mV
V
OS
Input Offset Voltage (Note 3) 0.5 1.0 0.7 4 mV
●1.2 2.0 7 mV
CMRR Common-Mode Rejection Ratio 90 106 dB
I
OS
Input Offset Current (Note 3) 20 40 30 75 nA
●75 100 nA
I
B
Input Bias Current (Note 3) 150 500 150 500 nA
●1000 1000 nA
A
V
Voltage Gain 20 40 10 40 V/mV
Response Time (Note 4) 80 80 ns
V
SAT
Saturation Voltage V
IN
≤ –5mV, I
O
= 25mA 0.75 1.5 0.75 1.5 V
V
+
≥ 4.5V, V
–
= 0V
V
IN
≤ –6mA, I
SINK
≤ 3.2mA
T
A
≥ 0°C 0.23 0.4 0.23 0.4 V
T
A
≤ 0°C 0.6 0.6 V
Output Leakage Current V
IN
≥ 5mV, V
OUT
= 35V 0.2 2 0.2 2 µA
●110 110 µA
Input Voltage Range V
S
= ±15V ●–12 ±13 12 –12 ±13 12 V
V
+
= 5V, V
–
= 0V ●131 3V
(Note 2)
TOP VIEW
–INPUT 2
V
+
V
–
10 9
8
6
4
2
1
5
H PACKAGE
10-LEAD TO-5 METAL CAN
7
3GND 2
OUTPUT 2
+INPUT 1
–INPUT 1
GND
OUTPUT 1
+INPUT 2
LT119AH
LM119H
LT319AH
LM319H
LT119AJ
LM119J
LT319AJ
LM319J
LT319AN
LM319N
ORDER PART
NUMBER
3
LT119A/LT319A
LM119/LM319
ELECTRICAL CHARACTERISTICS
(Note 2)
LT119A LT119
SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Differential Input Voltage ●±5±5V
I
S
Supply Current V
+
= 5V, V
–
= 0V 4.3 4.3 mA
I
S
Positive Supply Current V
S
= ±15V 8 11.5 8 11.5 mA
I
S
Negative Supply Current V
S
= ±15V 3 4.5 3 4.5 mA
V
OS
Input Offset Voltage V
S
= ±15V, V
CM
= 0V 0.3 0.5 8 mV
V
OS
Input Offset Voltage R
S
≤ 5k 0.5 1 2 8 mV
(Note 3) ●210mV
CMRR Common-Mode Rejection Ratio 90 106 dB
I
OS
Input Offset Current (Note 3) 30 40 80 200 nA
●60 300 nA
I
B
Input Bias Current (Note 3) 150 500 250 1000 nA
●1000 1200 nA
A
V
Voltage Gain 20 40 8 40 V/mV
Response Time (Note 4) 80 80 ns
V
SAT
Saturation Voltage V
IN
≤ –10mV, I
SINK
= 25mA
T
A
= 25°C 0.75 1.5 0.75 1.5 V
V
+
≥ 4.5V, V
–
= 0V
V
IN
≤ –10mV, I
SINK
≤ 3.2mA ●0.3 0.4 0.3 0.4 V
Output Leakage Current V
IN
≥ 10mV, V
OUT
= 35V 0.2 10 0.2 10 µA
Input Voltage Range V
S
= ±15V ●±13 ±13 V
V
+
= 5V, V
–
= 0V ●131 3V
Differential Input Voltage ●±5±5V
I
S
Supply Current V
+
= 5V, V
–
= 0V 4.3 4.3 mA
I
S
Positive Supply Current V
S
= ±15V 8 12.5 8 12.5 mA
I
S
Negative Supply Current V
S
= ±15V 3 5 3 5 mA
The ● denotes specifications which apply over the full operating
temperature range.
Note 1: For supply voltages less than ±15V, the maximum input voltage is
equal to the supply voltage.
Note 2: Unless otherwise noted, supply voltage equals ±15V and
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 3: 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 4: Response time specified is for a 100mV input step with 5mV
overdrive.
Note 5: 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.
4
LT119A/LT319A
LM119/LM319
TYPICAL PERFORMANCE CHARACTERISTICS
UW
Input CurrentsTransfer Function
Response Time for Various
Input Overdrives
TIME (ns)
–100
INPUT
VOLTAGE (mV) OUTPUT
VOLTAGE (V)
–50
0
1
2
4
50 150 200
LT119/319 G4
0
5
6
3
0 100 250 300 350
2mV
20mV
5mV
V
S
= ±15V
R
L
= 500Ω
V
++
= 5V
T
A
= 25°C
Response Time for Various
Input Overdrives
TIME (ns)
–100
INPUT
VOLTAGE (mV) OUTPUT
VOLTAGE (V)
–50
0
1
2
4
50 150 200
LT119/319 G6
0
5
6
3
0 100 250 300 350
20mV
2mV
5mV
V
S
= 5V
R
L
= 500Ω
V
++
= 5V
T
A
= 25°C
Output Saturation Voltage
OUTPUT VOLTAGE (V)
0
OUTPUT CURRENT (mA)
15
20
25
0.8
LT119/319 G7
10
5
00.2 0.4 0.6 1.0
V
S
= ±15V
INPUT OVERDRIVE = 5mV
T
J
= 25°C
OUTPUT VOLTAGE (V)
0
0
SHORT-CIRCUIT CURRENT (mA)
20
40
60
80
120
510
LT119/319 G9
15
100
0
POWER DISSIPATION (W)
0.2
0.4
0.6
0.8
1.2
1.0
T
J
= 25°C
SHORT-CIRCUIT CURRENT
AFTER 3 MINUTES
POWER DISSIPATION
Supply Current
Response Time for Various
Input Overdrives
TIME (ns)
0
INPUT
VOLTAGE (mV) OUTPUT
VOLTAGE (V)
50
0
1
2
4
50 150 200
LT119/319 G5
100
5
6
3
0 100 250 300 350
20mV
2mV
5mV
V
S
= 5V
R
L
= 500Ω
V
++
= 5V
T
A
= 25°C
DIFFERENTIAL INPUT VOLTAGE (V)
–10
INPUT BIAS CURRENT (nA)
200
300
400
6
LT119/319 G2
100
0
–100 –6 –2 210
V
S
= ±15V
T
A
= 25°C
MAXIMUM
DIFFERENTIAL
INPUT VOLTAGE
Input Characteristics
SUPPLY VOLTAGE (V)
0
0
SUPPLY CURRENT (mA)
2
4
6
8
51015 20
LT119/319 G8
10
12

POSITIVE SUPPLY
NEGATIVE SUPPLY
T
J
= 25°C
DIFFERENTIAL INPUT VOLTAGE (mV)
–1.0
OUTPUT VOLTAGE HIGH (V)
OUTPUT VOLTAGE LOW (V)
30
40
0.6
LT119/319 G1
20
10
0–0.6 –0.2 0.2 1.0
25
35
15
5.0
6
8
4
2
0
5
7
3
1
V
++
= 36V
V
++
= 5V
V
S
= ±15V
R
L
= 1.4k
T
A
= 25°C
TEMPERATURE (°C)
–55
0
INPUT CURRENT (nA)
50
150
200
250
–15 25 45 125
LT119/319 G3
100
–35 5 65 85 105
V
S
= ±15V
BIAS
OFFSET
Output Limiting Characteristics
5
LT119A/LT319A
LM119/LM319
10 5V
1
2
3
4
LT119/319 TA5
1
/
2
LT319A OUTPUT
39k
1k
20k
20k
2k
–
+
–
+
1k
100k 10k
INPUT
0V TO 5V
AT CUT
18pF, 100kHz
1000pF
MV1405*
5V
3k 5V
5
7
6
8
9
1
/
2
LT319A
1
/
2
LT319A
TYPICAL PERFORMANCE CHARACTERISTICS
UW
Common-Mode Limits Supply Current
TYPICAL APPLICATIONS
U
Relay Driver High Noise Immunity 60Hz Sync Circuit
10 6
5V
7
5
8
9
–
+
LT119/319 TA4
1
/
2
LT319A OUTPUT
3.3k
10k
20k
0.15µF
10k
68k
1N4148
60Hz
INPUT
10V
P–P
(TYP)
10
6
28V
5V
7
5
8
9
–
+
35V
LT119/319 TA3
INPUTS
1
/
2
LT319A
Voltage Controlled Crystal Oscillator
With 100PPM Trim Range
0
SUPPLY CURRENT (mA)
2
6
8
10
LT119/319 G11
4
12
TEMPERATURE (°C)
–55 –35 –15 85 105 125
2554565
POSITIVE SUPPLY = 15V
POSITIVE SUPPLY = 5V, V
–
= 0V
NEGATIVE SUPPLY = –15V
TEMPERATURE (°C)
–55 –35 –15
V
–
COMMON-MODE LIMITS (V)
0.4
1.2
–2.0
–1.6
85 105 125
V
+
LT119/319 G10
0.8
2554565
–1.2
–0.8
–0.4
V
+
= 5V, V
–
= 0V
V
S
= ±15V
V
S
= ±15V, V
+
= 5V, V
–
= 0V
REFERRED TO SUPPLY VOLTAGES
6
LT119A/LT319A
LM119/LM319
TYPICAL APPLICATIONS
U
–
+
–
+
100pF
100pF
120pF
300pF
5V
680Ω
680Ω
10k 5V
2k
2k
1k
5V
INPUT
PULSE
0V TO 1V
INPUT LM385-1.2
1
/
2
LT319A
1
/
2
LT319A
10
6
2
8
9
3
4
1
7
5
5V
7408
LT119/319 TA6
OUTPUT
0µs TO 1µs
(20ns MINIMUM)
4
3
–
+
1
/
2
LT119A
87
9
1
5
15V
–15V
LT119/319 TA8
3k
6
*TRIM FOR ZERO VOLTS OUT
WITH ZERO VOLTS IN
†
POLYSTYRENE CAPACITOR
2
10
–
+
+
15V
15V
–15V
5V
10µF 4.7k
12k 10k
3k
2N2907
2N2907
100Ω240Ω3k
1N4148
0.003µF
†
2N4931
2N2907
2N2222
3.3k 9k
20k
10pF 2pF 
TO 8pF*
15V
1k
1k
9k
INPUT
1N4148
SAMPLE
HOLD0V
Q
CLR PRESET
V
S
V
OUT
CLK D
74C74
1
/
2
LT119A
5 Microsecond Sample-and-Hold with Zero Hold Step
–
+
1
/
2
LT119A
4
3
–
+
1
/
2
LT119A
8
7
9
1
2
5
–5V
5V
–5V
5V
LT119/319 TA7
5V
LT1004-1.2
PN4250 PN4250
82k
10k
4.7k
1k
1k
20k*
0.1µF
†
1000µF
†
2N3904
INPUT
0V TO 3.5V
1N4148
1N4148
1N4148
3.9k CONVERT 
COMMAND
INPUT (TTL)
15k
39k
6
1k
10k*
5V
DATA
OUT
74C04
*1% FILM
†
POLYSTYRENE, MOUNT
CAPACITORS CLOSE TOGETHER
CONVERSION TIME = 10ms
* = 1%
CAPACITORS ARE POLYSTYRENE MOUNT
IN CLOSE PROXIMITY
10
10-Bit Serial Output A/D Converter
Voltage Controlled High Speed One Shot
7
LT119A/LT319A
LM119/LM319
TYPICAL APPLICATIONS
U
5kHz to 2MHz V→F Converter
8
9
–
+
1
/
2
LT119A
32
4
6
5
1
7
10
–
+
10k
1
/
2
LT119A
5V
3.3k
20k
† SET SCALE FACTOR
2k†
0V TO 10V
0.01µF
22pF
–5V
5V
10k
10k
2k
3k
470Ω
470Ω
50pF
POLYSTYRENE
2N2369
330Ω
5V
5V
–5V
LT1004-1.2
1M
0.1µF
TTL OUT
5kHz TO 2MHz
ALL DIODES 1N4148
LT119/319 TA9
220Ω
SCHEMATIC DIAGRAM
WW
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
R2
4k
R4
3k R5
3k
R8
2k
R11
13k
R12
13k
R17
3Ω
R10
170Ω
C1
18pF
R6
3k
R7
3k
R3
4k
R1
3.5k
Q4
Q6
Q7
Q8
Q9
Q5
Q21
Q11 Q12
Q13
Q10
Q15
Q17
GNDV
–
V
+
Q16
Q14
Q20
Q18
Q19
Q22
Q3
Q2
Q1
5.6V
5.6V
R25
600ΩR24
250Ω
R23
4k R22
60ΩR20
3.6k
R21
900Ω
R18
1.9k
R9
18k
R19
250ΩR14
2k
R13
600Ω
R15
300
R16
600Ω
TO OTHER
SIDE
LT119A
OUTPUT
INPUTS
–
+
8
LT119A/LT319A
LM119/LM319
N14 0594
0.015
(0.380)
MIN
0.125
(3.175)
MIN
0.130 ± 0.005
(3.302 ± 0.127)
0.045 – 0.065
(1.143 – 1.651)
0.065
(1.651)
TYP
0.018 ± 0.003
(0.457 ± 0.076)
0.100 ± 0.010
(2.540 ± 0.254)
0.075 ± 0.015
(1.905 ± 0.381)
0.260 ± 0.010*
(6.604 ± 0.254)
0.770*
(19.558)
MAX
31 24567
8910
11
1213
14
0.009 – 0.015
(0.229 – 0.381)
0.300 – 0.325
(7.620 – 8.255)
0.325 +0.025
–0.015
+0.635
–0.381
8.255
()
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS.
MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm).
Dimension in inches (millimeters) unless otherwise noted.
PACKAGE DESCRIPTION
U
LT/GP 0694 5K REV A • PRINTED IN USA
LINEAR TECHNOLOGY CORPORATION 1994
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7487
(408) 432-1900
●
FAX
: (408) 434-0507
●
TELEX
: 499-3977
H Package
10-Lead T0-5 Metal Can
0.050
(1.270)
MAX
0.010 – 0.045
(0.254 – 1.143)
SEATING
PLANE
0.040
(1.016)
MAX 0.165 – 0.185
(4.191 – 4.699)
GAUGE
PLANE
REFERENCE
PLANE
0.500 – 0.750
(12.700 – 19.050)
0.305 – 0.335
(7.747 – 8.509)
0.335 – 0.370
(8.509 – 9.398)
DIA
NOTE: LEAD DIAMETER IS UNCONTROLLED BETWEEN
THE REFERENCE PLANE AND SEATING PLANE.
0.016 – 0.021
(0.406 – 0.533)
0.230
( 5.842)
BSC
0.027 – 0.045
(0.686 – 1.143)
0.027 – 0.034
(0.686 – 0.864)
0.110 – 0.160
(2.794 – 4.064)
INSULATING
STANDOFF
36°BSC
H10(5) 0592
J Package
14-Lead Ceramic DIP
N Package
14-Lead Plastic DIP
J14 0594
0.045 – 0.068
(1.143 – 1.727)
0.100 ± 0.010
(2.540 ± 0.254)
0.014 – 0.026
(0.360 – 0.660)
0.200
(5.080)
MAX
0.015 – 0.060
(0.381 – 1.524)
0.125
(3.175)
MIN
0.300 BSC
(0.762 BSC)
0.008 – 0.018
(0.203 – 0.457) 0° – 15°
0.385 ± 0.025
(9.779 ± 0.635)
1234567
0.220 – 0.310
(5.588 – 7.874)
0.785
(19.939)
MAX
0.005
(0.127)
MIN 14 11 891013 12
0.025
(0.635)
RAD TYP
NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP OR TIN PLATE LEADS.
0.045 – 0.068
(1.143 – 1.727)
FULL LEAD
OPTION
0.023 – 0.045
(0.584 – 1.143)
HALF LEAD
OPTION
CORNER LEADS OPTION 
(4 PLCS)