LM111-LM211-LM311
Voltage comparator with strobe
Features
■
■
■
■
■
■
Maximum input current: 150nA
Maximum offset current: 20nA
Differential input voltage range: ±30V
Power consumption:135mW at ±15V
Supply voltage: +5V to ±15V
Output current: 50mA
D
SO-8
(Plastic micropackage)
Pin connections (top view)
N
DIP8
(Plastic package)
Description
The LM111, LM211, LM311 are voltage
comparators that have low input currents.
They are also designed to operate over a wide
range of supply voltages: from standard ±15V
operational amplifier supplies down to the single
+5V supply used for IC logic.
Their output is compatible with RTL-DTL and TTL
as well as MOS circuits and can switch voltages
up to +50V at output currents as high as 50mA.
Order codes
Part number
LM211N
-40°C, +105°C
LM211D/DT
LM311N
0°C, +70°C
LM311D/DT
SO-8
Tube or Tape & reel
311
SO-8
DIP8
Tube or tape & reel
Tube
211
LM311
Temperature
range
Package
DIP8
Packing
Tube
Marking
LM211N
September 2006
Rev 4
1/14
www.st.com
14
Contents
LM111-LM211-LM311
Contents
1
2
3
4
5
Schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Absolute maximum ratings & operating conditions . . . . . . . . . . . . . . . 4
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Typical application schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.1
5.2
DIP8 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
SO-8 package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
6
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2/14
LM111-LM211-LM311
Schematic diagram
1
Schematic diagram
Figure 1.
Schematic diagram
3/14
Absolute maximum ratings & operating conditions
LM111-LM211-LM311
2
Absolute maximum ratings & operating conditions
Table 1.
Symbol
V
CC
V
id
V
i
V
(1-4)
V
(7-4)
Supply voltage
Differential input voltage
Input voltage
(1)
Ground to negative supply voltage
Output to negative supply voltage
LM111-LM211
LM311
Output short-circuit duration
Voltage at strobe pin
p
d
T
j
T
stg
Power dissipation
(2)
DIP8
SO-8
Junction temperature
Storage temperature range
Absolute maximum ratings (AMR)
Parameter
Value
36
±30
±15
30
50
40
10
V
CC+
-5
1250
710
+150
-65 to +150
Unit
V
V
V
V
V
s
V
mW
°C
°C
1. This rating applies for ±15V supplies. The positive input voltage limit is 30V above the negative. The
negative input voltage is equal to the negative supply voltage or 30V below the positive supply, whichever
is less.
2. P
d
is calculated with T
amb
= +25°C, T
j
= +150°C and R
thja
= 100°C/W for the DIP8 package, and
R
thja
= 175°C/W for the SO-8 package.
Table 2.
Symbol
V
CC
Operating conditions
Parameter
Supply voltage
Operating free-air temperature range
LM111
LM211
LM311
Value
5 to ±15
-55 to +125
-40 to +105
0 to +70
Unit
V
T
oper
°C
4/14
LM111-LM211-LM311
Electrical characteristics
3
Table 3.
Symbol
Electrical characteristics
V
CC+
= ±15V, T
amb
= +25°C (unless otherwise specified)
LM111 - LM211
Parameter
Conditions
Min.
(1)
LM311
Unit
Typ.
Max.
Typ.
Max. Min.
V
io
Input offset voltage
R
S
≤
50kΩ
T
amb
= +25°C
T
min
≤
T
amb
≤
T
max
T
amb
= +25°C
T
min
≤
T
amb
≤
T
max
T
amb
= +25°C
T
min
≤
T
amb
≤
T
max
40
Positive
Negative
T
min
≤
T
amb
≤
T
max
T
amb
= +25°C, I
O
= 50mA,
V
i
≤
-5mV
T
amb
= +25°C, I
O
= 50mA,
V
i
≤
-10mV
0.7
4
60
200
5.1
4.1
-14.5 +13.8
-14.7
0.75
3
4
10
20
100
150
40
6
5
+13
2
6
100
200
5.1
4.1
-14.5 +13.8
-14.7
7.5
10
50
70
250
300
mV
I
io
I
ib
A
vd
I
CC+
I
CC-
V
icm
Input offset current
(1)
Input bias current
(1)
Large signal voltage gain
Supply currents
Input common mode
voltage range
nA
nA
V/mV
7.5
5
+13
mA
V
1.5
0.75
1.5
V
V
OL
Low level output voltage
T
min
≤
T
amb
≤
T
max
V
CC+
≥
+4.5V, V
CC-
= 0
I
O
= 8mA, V
i
≤
-6m
T
min
≤
T
amb
≤
T
max
V
CC+
≥
+4.5V, V
CC-
= 0
I
O
= 8mA, V
i
≤
-10mV
T
amb
= +25°C
Vi
≥
+5mV, V
O
= +35V
0.23
0.4
0.23
0.4
0.2
10
0.2
50
nA
nA
µA
3
200
mA
ns
I
OH
High level output current
T
amb
= +25°C
Vi
≥
+10mV, V
O
= +35V
T
min
≤
T
amb
≤
T
max
Vi
≥
+5mV, V
O
= +35V
0.1
3
200
0.5
I
strobe
t
re
Strobe current
Response time
(2)
1. The offset voltage, offset current and bias current specifications apply for any supply voltage from a single +5V supply up to
±15V supplies. The offset voltages and offset currents given are the maximum values required to drive the output down to
+1V or up to +14V with a 1mA load current. Thus, these parameters define an error band and take into account the worst-
case of voltage gain and input impedance.
2. The response time specified is for a 100mV input step with 5mV overdrive.
5/14
