LT119A/LT319A
LM119/LM319
Dual Comparator
FEATURES
s
s
s
s
s
DESCRIPTIO
Guaranteed
Maximum 0.5mV Input Offset Voltage
Input Protection Diodes
Operates From Single 5V Supply
25mA Drive Capability
80ns Response Time
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.
, LTC and LT are registered trademarks of Linear Technology Corporation.
APPLICATIO S
s
s
s
s
Window Detectors
High Speed One Shot
Relay/Lamp Drivers
Voltage Controlled Oscillators
TYPICAL APPLICATIO
Window Detector*
5V
Response Time for Various Input Overdrives
6
5
OUTPUT
VOLTAGE (V)
V
UT
3
+
–
10
1
500Ω
TTL OUTPUT
4
3
2
1
20mV
1/2 LT319A
V
IN
4
2
8
INPUT
VOLTAGE (mV)
+
1/2 LT319A
6
7
5
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
LT
9
–
LT119/319 TA1
*
ALLOWED WINDOW FOR SINGLE 5V SUPPLY IS 1.2V TO 3.8V
U
2mV
5mV
V
S
=
±15V
R
L
= 500Ω
V
+ +
= 5V
T
A
= 25°C
100 150 200 250 300 350
TIME (ns)
LT119/319 TA2
U
U
119a319afb
1
LT119A/LT319A
LM119/LM319
ABSOLUTE
AXI U
RATI GS
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)
PACKAGE/ORDER I FOR ATIO
TOP VIEW
V
+
OUTPUT 1
1
GND 2
+INPUT 1 3
–INPUT 1
4
5
V
–
6
OUTPUT 2
10
–INPUT 2
9
8 +INPUT 2
7 GND 2
ORDER PART
NUMBER
LT119AH
LM119H
LT319AH
LM319H
H PACKAGE
10-LEAD TO-5 METAL CAN
T
JMAX
= 150°C,
θ
JA
= 150°C/ W,
θ
Jc
= 45°C/ W
OBSOLETE PACKAGE
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER
V
OS
Input Offset Voltage
CONDITIONS
The
q
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
LT119A
MIN TYP
MAX
0.3
q
V
S
=
±15V,
V
CM
= 0
(Note 4)
CMRR
I
OS
I
B
A
V
Common Mode Rejection Ratio
Input Offset Current
Input Bias Current
Voltage Gain
Response Time
(Note 5)
(Note 4)
q
(Note 4)
q
2
U
U
W
W W
U
W
(Note 1)
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
TOP VIEW
NC
NC
GND
+INPUT
–INPUT
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
ORDER PART
NUMBER
LT319AN
LM319N
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
LT119AJ
LM119J
LT319AJ
LM319J
OBSOLETE PACKAGE
MIN
LM119
TYP
0.7
MAX
4
4
7
75
100
500
1000
UNITS
mV
mV
mV
dB
nA
nA
nA
nA
V/mV
ns
0.5
1.0
2.0
40
75
500
1000
10
0.5
1.2
90
106
20
150
20
40
80
30
150
40
80
119a319afb
LT119A/LT319A
LM119/LM319
ELECTRICAL CHARACTERISTICS
SYMBOL PARAMETER
V
SAT
Saturation Voltage
CONDITIONS
The
q
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
LT119A
MIN TYP
MAX
0.75
1.5
MIN
LM119
TYP
0.75
MAX
1.5
UNITS
V
V
IN
≤
–5mV, I
O
= 25mA,
V
+
≥
4.5V, V
–
= 0V
V
IN
≤
–6mA, I
SINK
≤
3.2mA
T
A
≥
0°C
T
A
≤
0°C
0.23
0.2
1
–12
1
±13
0.4
0.6
2
10
12
3
±5
–12
1
0.23
0.2
1
±13
0.4
0.6
2
10
12
3
±5
V
V
µA
µA
V
V
V
mA
mA
mA
Output Leakage Current
Input Voltage Range
Differential Input Voltage
I
S
Supply Current
Positive Supply Current
Negative Supply Current
V
IN
≥
5mV, V
OUT
to V
–
= 35V
q
V
S
=
±15V
V
+
= 5V, V
–
= 0V
V
+
= 5V, V
–
= 0V
V
S
=
±15V
V
S
=
±15V
q
q
q
4.3
8
3
11.5
4.5
4.3
8
3
11.5
4.5
The
q
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
A
= 25°C. (Note 3)
SYMBOL PARAMETER
V
OS
Input Offset Voltage
CONDITIONS
V
S
=
±15V,
V
CM
= 0V
R
S
≤
5k
(Note 4)
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 5)
V
IN
≤
–10mV, I
SINK
= 25mA
V
+
≥
4.5V, V
–
= 0V,
V
IN
≤
–10mV, I
SINK
≤
3.2mA
Output Leakage Current
Input Voltage Range
Differential Input Voltage
I
S
Supply Current
Positive Supply Current
Negative Supply Current
V
+
= 5V, V
–
= 0V
V
S
=
±15V
V
S
=
±15V
V
IN
≥
10mV, V
OUT
to V
–
= 35V
V
S
=
±15V
V
+
= 5V, V
–
= 0V
q
q
q
q
q
MIN
LT319A
TYP
MAX
0.3
0.5
0.5
1
2
40
60
500
1000
MIN
LM319
TYP
2
MAX
8
8
10
200
300
1000
1200
UNITS
mV
mV
mV
dB
nA
nA
nA
nA
V/mV
ns
90
(Note 4)
q
106
30
150
80
250
8
1.5
0.4
10
3
±5
4.3
8
3
12.5
5
4.3
8
3
12.5
5
1
40
80
0.75
0.3
0.2
±13
3
±5
1.5
0.4
10
(Note 4)
q
20
40
80
0.75
0.3
0.2
±13
V
V
µA
V
V
V
mA
mA
mA
1
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
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.
119a319afb
3
LT119A/LT319A
LM119/LM319
TYPICAL PERFOR A CE CHARACTERISTICS
Transfer Function
40
35
V
S
= ±15V
R
L
= 1.4k
T
A
= 25°C
V
+ +
= 36V
8
7
6
V
+ +
= 5V
5
4
3
2
1
–0.6
0.2
0.6
–0.2
DIFFERENTIAL INPUT VOLTAGE (mV)
0
1.0
–100
–10
400
V
S
= ±15V
T
A
= 25°C
OUTPUT VOLTAGE HIGH (V)
INPUT CURRENT (nA)
30
25
20
15
10
5.0
INPUT BIAS CURRENT (nA)
0
–1.0
Response Time for Various
Input Overdrives
6
5
OUTPUT
VOLTAGE (V)
OUTPUT
VOLTAGE (V)
4
3
2
1
20mV
5mV
4
3
2
1
2mV
5mV
20mV
V
S
= 5V
R
L
= 500Ω
V
+ +
= 5V
T
A
= 25°C
OUTPUT
VOLTAGE (V)
2mV
INPUT
VOLTAGE (mV)
INPUT
VOLTAGE (mV)
0
0
–50
–100
0
50
100 150 200 250 300 350
TIME (ns)
LT119/319 G4
100
50
0
0
50
INPUT
VOLTAGE (mV)
Output Saturation Voltage
25
T
J
= 25°C
20
OUTPUT CURRENT (mA)
SUPPLY CURRENT (mA)
SHORT-CIRCUIT CURRENT (mA)
15
10
5
V
S
= ±15V
INPUT OVERDRIVE = 5mV
0
0
0.2
0.6
0.8
0.4
OUTPUT VOLTAGE (V)
1.0
4
U W
LT119/319 G1
Input Characteristics
250
Input Currents
V
S
= ±15V
200
BIAS
150
300
OUTPUT VOLTAGE LOW (V)
12
10
8
6
4
2
0
200
100
100
0
MAXIMUM
DIFFERENTIAL
INPUT VOLTAGE
–6
2
6
–2
DIFFERENTIAL INPUT VOLTAGE (V)
10
50
OFFSET
0
– 55 –35 –15
5 25 45 65 85 105 125
TEMPERATURE (°C)
LT119/319 G3
LT119/319 G2
Response Time for Various
Input Overdrives
6
5
6
5
4
3
2
1
0
0
–50
–100
Response Time for Various
Input Overdrives
V
S
= 5V
R
L
= 500Ω
V
+ +
= 5V
T
A
= 25°C
20mV
5mV
2mV
V
S
=
±15V
R
L
= 500Ω
V
++
= 5V
T
A
= 25°C
0
100 150 200 250 300 350
TIME (ns)
LT119/319 G5
0
50
100 150 200 250 300 350
TIME (ns)
LT119/319 G6
Supply Current
120
Output Limiting Characteristics
1.2
T
J
= 25°C
100
80
60
40
POWER DISSIPATION
20
0
0.2
0
15
LT119/319 G9
T
J
= 25°C
1.0
SHORT-CIRCUIT CURRENT
AFTER 3 MINUTES
POWER DISSIPATION (W)
0.8
0.6
0.4
POSITIVE SUPPLY
NEGATIVE SUPPLY
0
15
5
10
SUPPLY VOLTAGE (V)
20
LT119/319 G8
0
5
10
OUTPUT VOLTAGE (V)
LT119/319 G7
119a319afb
LT119A/LT319A
LM119/LM319
TYPICAL PERFORMANCE CHARACTERISTICS
Common Mode Limits
V
+
–0.4
COMMON-MODE LIMITS (V)
SUPPLY CURRENT (mA)
–0.8
–1.2
–1.6
V
S
=
±15V
REFERRED TO SUPPLY VOLTAGES
–2.0
1.2
0.8
0.4
V
–
– 55 – 35 –15
5
25 45 65 85 105 125
TEMPERATURE (°C)
LT119/319 G10
V
S
=
±15V,
V
+
= 5V, V
–
= 0V
TYPICAL APPLICATIO S
Relay Driver
5V
10
11
7
8
6
28V
60Hz
INPUT
10V
P-P
(TYP)
U
U W
Supply Current
12
V
+
= 5V, V
–
= 0V
10
POSITIVE SUPPLY = 15V
8
6
4
2
NEGATIVE SUPPLY = –15V
POSITIVE SUPPLY = 5V, V
–
= 0V
0
– 55 – 35 –15
5
25 45 65 85 105 125
TEMPERATURE (°C)
LT119/319 G11
–
+
INPUTS
9
1/2 LT319A
35V
LT119/319 TA3
High Noise Immunity 60Hz Sync Circuit
5V
68k
1N4148
3.3k
10
0.15µF
20k
–
+
6
11
7
OUTPUT
1/2 LT319A
9
8
10k
10k
LT119/319 TA4
119a319afb
5
MCU
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