Fairchild Semiconductor LM311 Datasheet
LM311
Single Comparator
www.fairchildsemi.com
Features
• Low input bias current : 250nA (Max)
• Low input offset current : 50nA (Max)
• Differential Input Voltage : ±30V
• Power supply voltage : single 5.0V supply to ±15V.
• Offset voltage null capability.
• Strobe capability.
Internal Block Diagram
Description
The LM311 series is a monolithic, low input current voltage
comparator. The device is also designed to operate from dual
or single supply voltage.
8-DIP
1
8-SOP
1
©2001 Fairchild Semiconductor Corporation
Rev. 1.0.1
LM311
Schematic Diagram
Absolute Maximum Ratings
Parameter Symbol Value Unit
Total Supply Voltage V
Output to Negative Supply Voltage LM311 V
Ground to Negative voltage V
Differential Input Voltage V
Input Voltage V
CC
- V
O
EE
I(DIFF)
I
EE
Output Short Circuit Duration - 10 sec
Power Dissipation P
Operating Temperature Range T
Storage Temperature Range T
D
OPR
STG
36 V
40 V
-30 V
30 V
±15 V
500 mW
0 ~ +70 °C
- 65 ~ +150 °C
2
Electrical Characteristics
(V
= 15V, TA = 25°C, unless otherwise specified)
CC
Parameter Symbol Conditions Min. Typ. Max. Unit
Input Offset Voltage V
Input Offset Current I
Input Bias Current I
Voltage Gain G
Response Time T
Saturation Voltage V
Strobe “ON” Current I
Output Leakage Current I
Input Voltage Range V
Positive Supply Current I
Negative Supply Current I
Strobe Current I
IO
IO
BIAS
V
RES
SAT
STR(ON)
SINK
I(R)
CC
EE
STR
≤ 50KΩ -1.07.5
R
S
Note 1 - - 10
-650
Note 1 - - 70
- 100 250
Note 1 - - 300
- 40 200 - V/mV
Note 2 - 200 - ns
IO =50mA, V
≥ 4.5V, V
V
CC
I
=8mA, V
O
≤ -10mV - 0.75 1.5
I
=0V
EE
≤ -10mV,
I
Note 1
- 0.23 0.4
--3-mA
I
=3mA, V
STR
V
=15V, VCC=±15V
O
Note 1
≥ 10mV
I
- 0.2 50 nA
to
13.0
-14.7
to
13.8
-14.5
--3.07.5mA
- - -2.2 -5.0 mA
--3-mA
LM311
mV
nA
nA
V
-V
Notes :
1. 0 ≤ T
2. The response time specified is for a 100mV input step with 5mV over drive.
≤ +70°C
A
3
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