1
LT1017/LT1018
10178fc
3
665k
1%
52.3k
1%
OUTPUT HIGH FOR
0
C
T
5
C
280k
1%
YSI 44011
258.3k AT 5
C
333.1k AT 0
C
665k
1%
V
+
1.5V
1
8
2
+
1/2 LT1017
5
7
4
1017/18 TA01
6
+
1/2 LT1017
Micropower
Dual Comparator
s
Maximum Offset Voltage: 1mV
s
Maximum Bias Current: 15nA
s
Typical Output Drive: 70mA
s
Operates from 1.1V to 40V
s
Internal Pull-Up Current
s
Output Can Drive Loads Above V
+
s
30
A Supply Current (LT1017)
110
A Supply Current (LT1018)
The LT
1017/LT1018 are general purpose micropower
comparators. The LT1017 is optimized for lowest operat-
ing power while the LT1018 operates at higher power and
higher speed. Both devices can operate from a single 1.1V
cell up to 40V. The output stage includes a class "B" pull-
up current source, eliminating the need for an external
resistive pull-up and saving power. The output stage is
also designed to allow driving loads connected to a supply
more positive than the device, as can comparators with
open-collector output stages.
Input specifications are also excellent. On-chip trimming
minimizes offset voltage, while high gain and common
mode rejection ratio keep other input referred errors low.
Common mode voltage range includes ground. Special
circuitry prevents false output states even if the input is
overdriven.
The LT1017/LT1018 are pin compatible with older dual
comparators such as 393 type devices.
s
Power Supply Monitors
s
Relay Driving
s
Oscillators
1.5V Powered Refrigerator Alarm
Supply Current
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
, LTC and LT are registered trademarks of Linear Technology Corporation.
TOTAL SUPPLY VOLTAGE (V)
1
2
4
0
SUPPLY CURRENT (
A)
40
80
160
10
20
40
100
1017/18 TA02
120
20
60
140
100
LT1018
OUTPUTS
LOW
LT1017
OUTPUTS
LOW
LT1018
OUTPUTS
HIGH
LT1017
OUTPUTS
HIGH
2
LT1017/LT1018
10178fc
LT1017CS8
LT1017IS8
LT1018CS8
ORDER PART
NUMBER
ORDER PART
NUMBER
A
U
G
W
A
W
U
W
A
R
BSOLUTE
XI
TI
S
Operating Temperature Range
LT1017M/LT1018M ...................... 55
C to 125
C
LT1017C/LT1018C ............................... 0
C to 70
C
LT1017I ........................................... 40
C to 85
C
Lead Temperature (Soldering, 10 sec)................. 300
C
Supply Voltage ....................................................... 40V
Differential Input Voltage ........................................ 40V
Input Voltage ............................................ 0.3V to 40V
Short-Circuit Duration .................................... Indefinite
Storage Temperature Range ................ 65
C to 150
C
W
U
U
PACKAGE/ORDER I FOR ATIO
LT1017MH
LT1017CH
LT1018MH
LT1018CH
T
JMAX
= 150
C,
JA
= 150
C/W,
JC
= 45
C/W
(Note 1)
LT1017CN8
LT1017IN8
LT1018CN8
T
JMAX
= 150
C,
JA
= 130
C/W
TOP VIEW
OUTPUT B
V
+
OUTPUT A
IN A
IN B
+IN B
+IN A
V
8
7
6
5
3
2
1
4
H PACKAGE
8-LEAD TO-5 METAL CAN
+
B
+
A
1
2
3
4
8
7
6
5
TOP VIEW
OUTPUT A
IN A
+IN A
V
V
+
OUTPUT B
IN B
+IN B
N8 PACKAGE
8-LEAD PDIP
+
B
+
A
ORDER PART
NUMBER
ELECTRICAL C
C
HARA TERISTICS
LT1017
LT1018
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
Offset Voltage
0.75V
V
S
20V
25
C
0.4
1
0.4
1
mV
(Note 2)
q
0.5
1.4
0.5
1.4
mV
125
C
5
0.7
1.5
mV
Bias Current
0.75V
V
S
20V
25
C
5
15
15
75
nA
q
7
25
18
100
nA
125
C
10
60
110
nA
Offset Current
0.75V
V
S
20V
25
C
0.4
2
1
8
nA
q
0.5
3
1.6
12
nA
125
C
20
20
nA
Common Mode Rejection Ratio
V
S
=
20V, 20V
V
CM
19.1V
25
C
105
115
105
115
dB
q
100
115
100
115
dB
125
C
82
100
95
110
dB
The
q
denotes specifications which apply over the operating temperature
range of 55
C to 85
C for M grade parts, 40
C to 85
C for I grade parts and 0
C to 70
C for C grade parts.
Consult LTC Marketing for parts specified with wider operating temperature ranges.
1
2
3
4
8
7
6
5
TOP VIEW
IN A
OUT A
V
+
OUT B
+IN A
V
+IN B
IN B
S8 PACKAGE
8-LEAD PLASTIC SO
T
JMAX
= 150
C,
JA
= 190
C/W
S8 PART
MARKING
1017
1017I
1018
TOP VIEW
SW PACKAGE
16-LEAD PLASTIC SO
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
NC
NC
OUT A
IN A
+IN A
V
NC
NC
NC
NC
V
+
OUT B
IN B
+IN B
NC
NC
ORDER PART
NUMBER
LT1017CSW
LT1018CSW
T
JMAX
= 150
C,
JA
= 130
C/W
OBSOLETE PACKAGE
Consider the 8-Lead Plastic Dip Package for Alternate Source
3
LT1017/LT1018
10178fc
Note 1: Absolute Maximum Ratings are those values beyond which the life
of the device may be impaired.
Note 2: Offset voltage is guaranteed over a common mode voltage range
of V
V
IN
(V
+
0.9V).
ELECTRICAL C
C
HARA TERISTICS
LT1017
LT1018
PARAMETER
CONDITIONS
MIN
TYP
MAX
MIN
TYP
MAX
UNITS
Power Supply Rejection Ratio
0.75V
V
S
20V
25
C
96
110
96
110
dB
q
95
105
95
105
dB
125
C
82
86
100
dB
Gain
No Load, V
OUT
=
19.9V (Note 3)
25
C
110
115
110
125
dB
q
105
115
105
120
dB
125
C
100
100
dB
R
L
= 4k, V
OUT
=
19V
25
C
100
110
100
110
dB
q
94
94
dB
Output Sink Current
V
+
= 4.5V, V
= 0V
25
C
30
65
35
70
mA
Overdrive > 30mV
q
25
50
25
50
mA
125
C
10
20
10
30
mA
Output Source Current
V
+
= 40V, V
= 0V
25
C
30
75
75
250
A
V
IN
= 5mV, V
OUT
= 0.4V
q
25
70
50
220
A
125
C
25
75
50
200
A
V
+
= 1.2V, V
= 0V
25
C
25
35
70
140
A
V
IN
= 5mV, V
OUT
= 0.4V
q
15
20
45
120
A
125
C
25
40
40
110
A
Negative Output Saturation
I
OUT
= 0mA
V
+
= 4.5V, V
= 0V
25
C
5
20
5
15
mV
= 0.1mA
V
IN
= 10mV
25
C
35
60
35
60
mV
= 1mA
25
C
60
120
60
120
mV
= 10mA
25
C
120
200
120
250
mV
= 30mA
25
C
350
600
350
700
mV
I
OUT
= 0mA
V
+
= 4.5V, V
= 0V
q
5
20
8
20
mV
= 0.1mA
V
IN
= 10mV
q
40
75
35
70
mV
= 1mA
q
75
150
70
150
mV
= 10mA
q
150
300
150
300
mV
= 30mA
q
600
900
500
900
mV
I
OUT
= 0mA
V
+
= 4.5V, V
= 0V
125
C
25
50
10
40
mV
= 0.1mA
V
IN
= 10mV
125
C
60
100
60
100
mV
= 1mA
125
C
100
200
110
200
mV
= 10mA
125
C
300
600
300
400
mV
= 30mA
125
C
900
mV
Positive Output Saturation
I
OUT
= 0
A
25
C
40
80
35
80
mV
= 10
A
25
C
175
250
175
250
mV
= 0
A
q
45
90
45
90
mV
= 10
A
q
190
300
190
300
mV
= 0
A
125
C
50
100
50
100
mV
= 10
A
125
C
300
300
mV
Leakage Current
V
S
= 5V, V
OUT
= 40V
25
C
0.5
3
1
8
A
V
IN
100mV
q
0.6
3
1.8
10
A
125
C
5
15
A
Supply Current
V
S
= 5V
25
C
30
60
110
250
A
q
40
80
110
250
A
125
C
80
300
A
V
S
= 40V
25
C
40
90
130
250
A
q
55
100
140
270
A
125
C
100
300
A
Minimum Operating Voltage
I
OUT
= 1mA
25
C
1.15
1.2
V
q
1.15
1.2
V
125
C
1.15
1.2
V
The
q
denotes specifications which apply over the operating temperature
range of 55
C to 85
C for M grade parts, 40
C to 85
C for I grade parts and 0
C to 70
C for C grade parts.
Note 3: No load gain is guaranteed but not tested (LT1017 only).
4
LT1017/LT1018
10178fc
C
C
HARA TERISTICS
U
W
A
TYPICAL PERFOR
CE
Input Bias Current
Input Offset Current
Bias Current vs Differential Input
TEMPERATURE (
C)
0
1
10
100
50
100
25
75
125
1017/18 G01
INPUT BIAS CURRENT (nA)
50 25
150
LT1018 V
CM
= V
LT1017 V
CM
= V
LT1018 V
CM
= V
+
1V
LT1017 V
CM
= V
+
1V
I
BIAS
REVERSES
POLARITY
TEMPERATURE (
C)
50
INPUT OFFSET CURRENT (nA)
2.0
2.5
3.0
25
75
1017/18 G02
1.5
1.0
25
0
50
100
125
0.5
0
LT1018
LT1017
DIFFERENTIAL INPUT VOLTAGE (V)
20
BIAS CURRENT (nA)
10
0
0.2
1017/18 G03
5
0
0.2
0.1
0.1
15
20
20
LT1018 + I
B
LT1017 + I
B
LT1018 I
B
LT1017 I
B
Input Bias Current with Inputs
Driven Below the Supply
Common Mode Limits
Supply Current
COMMON MODE VOLTAGE (V)
0.1
INPUT BIAS CURRENT (
A)
10
100
0.2
0.6
1.0
1017/18 G04
0.01
0.2
V
0.8
0.4
1
125
C
85
C 25
C
TEMPERATURE (
C)
50 25
25
50
75
COMMON MODE VOLTAGE (V)
V
150
1017/18 G05
0.4
0.8
0
100 125
V
+
0.4
0.2
1.0
0.6
0.6
0.8
V
CM
HIGH
V
CM
LOW
V
OS
= 0.5mV
VOLTAGES ARE REFERRED TO SUPPLIES
TEMPERATURE (
C)
50 25
25
50
75
SUPPLY CURRENT (
A)
80
150
1017/18 G06
40
0
0
100 125
160
60
100
20
140
120
V
SUPPLY
= 20V
LT1018
OUTPUTS LOW
LT1017
OUTPUTS LOW
LT1017
OUTPUTS HIGH
LT1018
OUTPUTS HIGH
Positive Supply Current
NPN Output Saturation Voltage
Output Sinking Current Limit
OUTPUT SINK CURRENT (mA)
0.1
10
POSITIVE SUPPLY CURRENT (
A)
100
1000
10000
1
10
100
1017/18 G07
LT1018
LT1017
SINK CURRENT (mA)
SATURATION VOLTAGE (mV)
1000
1017/18 G08
10
100
0.01
100
10
1
0.1
0.001
125
C
55
C
25
C
TOTAL SUPPLY VOLTAGE (V)
1
0
OUTPUT CURRENT LIMIT (mA)
20
40
60
80
10
100
1017/18 G09
100
OUTPUT SHORTED TO V
+
LT1018
LT1017
5
LT1017/LT1018
10178fc
C
C
HARA TERISTICS
U
W
A
TYPICAL PERFOR
CE
Output Sinking Current Limit
Total Switching Time
Output Delay
TEMPERATURE (
C)
50
0
OUTPUT CURRENT LIMIT (mA)
40
100
0
50
75
1017/18 G10
20
80
60
25
25
100 125
150
OUTPUT SHORTED TO V
+
LT1018
V
S
= 5V
LT1017
V
S
= 5V
LT1018
V
S
= 40V
LT1017
V
S
= 40V
TEMPERATURE (
C)
0
1
10
100
50
100
1017/18 G11
TOTAL SWITCHING TIME (
s)
50
25
75
125
25
150
R
L
= 47k (LT1018)
R
L
= 200k (LT1017)
V
OUT
= 90% V
FINAL
V
OVERDRIVE
= 5mV
LT1017
FALL
LT1018
FALL
LT1017
RISE
LT1018
RISE
OVERDRIVE (mV)
0.1
1
DELAY TIME (
s)
10
100
1
10
100
1017/18 G12
LT1017
FALL
LT1018
FALL
LT1017
RISE
LT1018
RISE
V
OUT
= 10% V
FINAL
Transition Time
Positive Transition Time
LT1017 Response Time
TOTAL SUPPLY VOLTAGE (V)
10
1
10
100
20
30
1017/18 G13
TRANSITION TIME (
s)
0
40
10% V
FINAL
V
OUT
90% V
FINAL
V
OVERDRIVE
= 10mV
LT1017 RISE
LT1018 FALL
LT1017 FALL/
LT1018 RISE
PULL-UP RESISTOR (
)
TRANSITION TIME (
s)
10k
10
1017/18 G14
0.1
1
1M
100k
1k
LT1017
V
SUP
= 40V
LT1018
V
SUP
= 40V
LT1018
V
SUP
= 2V
LT1017
V
SUP
= 2V
10% V
FINAL
V
OUT
90% V
FINAL
V
OVERDRIVE
= 10mV
LT1017 Response Time
LT1018 Response Time
LT1018 Response Time
5V
0V
V
IN
V
OUT
V
+
= 5V
5
s/DIV
1017/18 G15
V
= 0V
V
IN
= 100mV STEP
V
OVERDRIVE
= 10mV
R
L
= 10k
R
L
=
R
L
= 100k
5V
0V
V
IN
V
OUT
V
+
= 5V
2
s/DIV
1017/18 G16
V
= 0V
V
IN
= 100mV STEP
V
OVERDRIVE
= 10mV
R
L
= 10k
R
L
=
R
L
= 100k
5V
0V
V
IN
V
OUT
V
+
= 5V
5
s/DIV
1017/18 G17
V
= 0V
V
IN
= 100mV STEP
V
OVERDRIVE
= 10mV
5V
0V
V
IN
V
OUT
V
+
= 5V
2
s/DIV
1017/18 G18
V
= 0V
V
IN
= 100mV STEP
V
OVERDRIVE
= 10mV
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