INTEGRATED CIRCUITS
LM111/211/311/311B
Voltage comparator
Product data
Supersedes data of 1994 Aug 31
File under Integrated Circuits, IC11 Handbook
2001 Aug 03
Philips
Semiconductors
Philips Semiconductors
Product data
Voltage comparator
LM111/211/311/311B
DESCRIPTION
The LM111 series are voltage comparators that have input currents
approximately a hundred times lower than devices like the
µA710.
They are designed to operate over a wider range of supply voltages;
from standard
±15
V op amp supplies down to a single 3 V supply.
Their output is compatible with RTL, DTL, and TTL as well as MOS
circuits. Further, they can drive lamps or relays, switching voltages
up to 50 V at currents as high as 50mA.
Both the inputs and the outputs of the LM111 series can be isolated
from system ground, and the output can drive loads referred to
ground, the positive supply, or the negative supply. Offset balancing
and strobe capability are provided and outputs can be wire-ORed.
Although slower than the
µA710
(200 ns response time versus 40 ns),
the devices are also much less prone to spurious oscillations. The
LM111 series has the same pin configuration as the
µA710
series.
PIN CONFIGURATION
D, N Packages
GND
INPUT
INPUT
V–
1
2
3
4
8
7
6
5
V+
OUTPUT
BAL/STROBE
BALANCE
+
–
SL00062
Figure 1. Pin Configuration
FEATURES
APPLICATIONS
•
Operates from single 3 V supply (LM311B)
•
Maximum input bias current: 150 nA (LM311: 250 nA)
•
Maximum offset current: 20 nA (LM311: 50 nA)
•
Differential input voltage range:
±30
V
•
Power consumption: 135 mW at
±15
V
•
High sensitivity: 200 V/mV
•
Zero crossing detector
ORDERING INFORMATION
DESCRIPTION
8-Pin Plastic Small Outline Package (SO)
8-Pin Plastic Dual In-Line Package (DIP)
8-Pin Plastic Small Outline Package (SO)
8-Pin Plastic Dual In-Line Package (DIP)
8-Pin Plastic Small Outline Package (SO)
8-Pin Plastic Dual In-Line Package (DIP)
8-Pin Plastic Small Outline Package (SO)
8-Pin Plastic Dual In-Line Package (DIP)
•
Precision squarer
•
Positive/negative peak detector
•
Low voltage adjustable reference supply
•
Switching power amplifier
TEMPERATURE RANGE
–55
°C
to +125
°C
–55
°C
to +125
°C
–25
°C
to +85
°C
–25
°C
to +85
°C
0
°C
to +70
°C
0
°C
to +70
°C
0
°C
to +70
°C
0
°C
to +70
°C
ORDER CODE
LM111D
LM111N
LM211D
LM211N
LM311D
LM311N
LM311BD
LM311BN
DWG #
SOT96-1
SOT97-1
SOT96-1
SOT97-1
SOT96-1
SOT97-1
SOT96-1
SOT97-1
2001 Aug 03
2
853-0927 26834
Philips Semiconductors
Product data
Voltage comparator
LM111/211/311/311B
EQUIVALENT SCHEMATIC
BALANCE/
STROBE
BALANCE
V+
R3
300
R1
1.3K
R4
300
R2
1.3K
Q8
Q7
R8
750
Q10
R9
600
R5
70
Q20
Q11
Q12
Q5
R6
1.2K
R7
1.2K
Q8
Q13
Q19
R10
4K
Q14
Q18
R17
60
Q2
R15
400
R11
130
Q15
OUTPUT
Q3
Q1
D1
5V
D2
5V
Q4
Q9
INPUTS
Q23
Q22
R15
450
R12
600
Q18
Q2
R19
250
R18
200
R14
2K
Q17
R13
4
V–
SL00063
Figure 2. Equivalent Schematic
ABSOLUTE MAXIMUM RATINGS
SYMBOL
V
S
Total supply voltage
Output to negative supply voltage:
LM111/LM211
LM311/LM311B
Ground to negative supply voltage
Differential input voltage
V
IN
P
D MAX
Input voltage
1
Maximum power dissipation, T
amb
= 25
°C
N package
D package
Output short-circuit duration
Operating ambient temperature range
LM111
LM211
LM311/LM311B
Storage temperature range
Lead soldering temperature (10 sec max)
(still-air)
2
1190
780
10
–55 to +125
–25 to +85
0 to +70
–65 to +150
230
mW
mW
sec
°C
°C
°C
°C
°C
PARAMETER
RATING
36
50
40
30
±30
±15
UNIT
V
V
V
V
V
V
I
T
amb
T
stg
T
sld
NOTES:
1. This rating applies for
±15
V supplies. The positive input voltage limit is 30 V above the negative supply. The negative input voltage limit is
equal to the negative supply voltage or 30 V below the positive supply, whichever is less.
2. Derate above 25
°C,
at the following rates:
N package at 9.5 mW/°C
D package at 6.2 m/W°C
2001 Aug 03
3
Philips Semiconductors
Product data
Voltage comparator
LM111/211/311/311B
DC ELECTRICAL CHARACTERISTICS
1, 2, 3, 6
Over temperature range unless otherwise specified.
SYMBOL
V
OS
I
OS
I
BIAS
A
V
PARAMETER
Input offset voltage
3
Input offset current
3
Input bias current
Voltage gain
Response
time
4
TEST CONDITIONS
T
amb
= 25
°C;
R
S
≤
50 kΩ
T
amb
= 25
°C
T
amb
= 25
°C
T
amb
= 25
°C
T
amb
= 25
°C
LM111/211 V
IN
≤
–5mV;
I
OUT
= 50 mA
LM311/B V
IN
≤
–10 mV;
I
OUT
= 50 mA
T
amb
= 25
°C
T
amb
= 25
°C
LM111/211 V
IN
≥
5 mV;
V
OUT
= 35 V
LM311/B V
IN
≥
10 mV;
V
OUT
= 35 V
T
amb
= 25
°C,
I
STROBE
= 3 mA
(V– = V
GND
= –5 V)
R
S
≤
50 kΩ
LM111/LM211
Min
Typ
0.7
4.0
60
200
200
Max
3.0
10
100
Min
LM311
Typ
2.0
6.0
100
200
200
Max
7.5
50
250
Min
LM311B
Typ
2.0
6
100
200
500
Max
7.5
25
200
UNIT
mV
nA
nA
V/mV
ns
V
SAT
Saturation voltage
0.75
1.5
0.75
1.5
0.75
1.5
V
I
BAL/STR
Strobe on current
3.0
3.0
3.0
mA
I
LEAKAGE
Output leakage current
6
0.2
10
0.2
50
0.2
50
nA
V
OS
I
OS
I
BIAS
V
IN
Input offset voltage
3
Input offset current
3
Input bias current
Input voltage range
4.0
20
150
13.8
to
–14.7
13.8
to
–14.7
10
70
300
–14.5
13.0
V–
+0.5
10
50
250
V+
–1.5
mV
nA
nA
V
V =
±15
V (Pin 7 may
go to 5 V)
V+
≥
4.5 V, V– = 0 V
LM111/211 V
IN
≤
–6 mV;
I
SINK
≤
8 mA
LM311/B V
IN
≤
–10 mV;
I
SINK
≤
8 mA
V
IN
≥
5 mV;
V
OUT
= 35 V
T
amb
= 25
°C
T
amb
= 25
°C
–14.5
13.0
V
OL
Saturation voltage
6
0.23
0.4
0.23
0.4
0.23
0.4
V
I
OH
I
CC
I
EE
Output leakage current
Positive supply current
Negative supply voltage
0.1
5.1
4.1
0.5
6.0
5.0
5.1
4.1
7.5
5.0
1.6
3.5
µA
mA
mA
NOTES:
1. This rating applies for
±15
V supplies. The positive input voltage limit is 30 V above the negative supply. The negative input voltage limit is
equal to the negative supply voltage or 30 V below the positive supply, whichever is less.
2. These specifications apply for V
S
=
±15
V and 0
°C
< T
amb
< 70
°C
unless otherwise specified. With the LM211, however, all temperature
specifications are limited to –25
°C ≤
T
amb
≤
+85
°C,
and for the LM111 is limited to –55
°C
< T
amb
< +125
°C.
The offset voltage, offset
current, and bias current specifications apply for any supply voltage from a single 5 V supply up to
±15
V supplies.
3. The offset voltages and offset currents given are the maximum values required to drive the output within a volt of either supply with 1 mA
load. Thus, these parameters define an error band and take into account the worst case effects of voltage gain and input impedance.
4. The response time specified is for a 100 mV input step with 5 mV over-drive.
5. Do not short the strobe pin to ground; it should be current driven at 3 mA to 5 mA.
6. LM311B, all parameters are at V+ = 3 V
±10%;
V– = GND = 0 V.
2001 Aug 03
4
Philips Semiconductors
Product data
Voltage comparator
LM111/211/311/311B
TYPICAL APPLICATIONS
V+ 5V
BAL
R1
5 3K
2
INPUT
3
+
–
4
6
LM311
1
8
7
R3
10K
R2
3K
V+ = 5V
TO
MOS
LOGIC
R1
4.5K
2
+
–
4
C1
R2
47K
V– = 10V
MAGNETIC
PICKUP
3
R4
82K
8
LM311
1
R2
1K
3
7
TTL
OUTPUT
R3
2K
R1
240K
INPUT
LM311
–
4
1
TO TTL
OUTPUT
V+ = 5V
R3
82K
2
+
8
7
R5
1K
* Values shown are for a 0 to 30V logic swing and a 15V threshold.
** May be added to control speed and reduce susceptibility to noise spikes.
Zero Detector
Driving MOS Logic
Detector for Magnetic
Transducer
Figure 3. Typical Applications
TTL Interface with High
Level Logic
SL00064
2001 Aug 03
5
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