©2001 Fairchild Semiconductor Corporation
www.fairchildsemi.com
Rev. 1.0.1
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.
Description
The LM311 series is a monolithic, low input curren t voltage
comparator . The device is also designed to operate from dual
or single supply voltage.
8-DIP
8-SOP
1
1
Internal Block Diagram
LM311
Single Comparator
LM311
2
Schematic Diagram
Absolute Maximum Ratings
Parameter Symbol Value Unit
Total Supply Voltage VCC 36 V
Output to Negative Supply Voltage LM311 VO - VEE 40 V
Ground to Negative voltage VEE -30 V
Differential Input Voltage VI(DIFF) 30 V
Input Voltage VI±15 V
Output Short Circuit Duration - 10 sec
Power Dissipation PD500 mW
Operating Temperature Range TOPR 0 ~ +70 °C
Storage Temperature Range TSTG - 65 ~ +150 °C
LM311
3
Electrical Characteristics
(VCC = 15V, TA = 25°C, unless otherwise specified)
Notes :
1. 0 ≤ TA ≤ +7 0°C
2. The response time specified is for a 100mV input step with 5mV over drive.
Parameter Symbol Conditions Min. Typ. Max. Unit
Input Offset Voltage VIO RS ≤ 50KΩ-1.07.5
mV
Note 1 - - 10
Input Offset Current IIO -650
nA
Note 1 - - 70
Input Bias Current IBIAS - 100 250 nA
Note 1 - - 300
Voltage Gain GV- 40 200 - V/mV
Response Time TRES Note 2 - 200 - ns
Saturation Voltage VSAT
IO =50mA, VI ≤ -10mV - 0.75 1.5 V
VCC ≥ 4.5V, VEE =0V
IO =8mA, VI ≤ -10mV, Note 1 - 0.23 0.4
Strobe “ON” Current ISTR(ON) --3-mA
Output Leakage Current ISINK ISTR =3mA, VI ≥ 10mV
VO =15V, VCC=±15V - 0.2 50 nA
Input Voltage Range VI(R) Note 1 -14.5
to
13.0
-14.7
to
13.8 -V
Positive Supply Current ICC --3.07.5mA
Negative Supply Current IEE - - -2.2 -5.0 mA
Strobe Current ISTR --3-mA
LM311
4
Typica l Perfo rma nce Characteristics
Figure 1. Input Bias Current vs Temperature Figure 2. Input Offset Current vs Temperature
Figure 3. Offset Voltage vs Input Resistance Figure 4. Input Bias Current vs
Differential input voltage
Figure 5. Common Mode Limits vs Temperature Figure 6. Output Voltage vs
Differential input voltage
LM311
5
Typical Performance Characteristics (continued)
Figure 7. Saturation voltage vs Current Figure 8. Supply Current vs Temperature
Figure 9. Leakage Current vs Temperature Figure 10. Supply Current vs Supply Voltage
Figure 11. Current Saturation Voltage Figure 12. Output Limiting Characterstics
LM311
6
Mechanical Dimensions
Package
6.40 ±0.20
3.30 ±0.30
0.130 ±0.012
3.40 ±0.20
0.134 ±0.008
#1
#4 #5
#8
0.252 ±0.008
9.20 ±0.20
0.79
2.54
0.100
0.031
()
0.46 ±0.10
0.018 ±0.004
0.060 ±0.004
1.524 ±0.10
0.362 ±0.008
9.60
0.378 MAX
5.08
0.200
0.33
0.013
7.62
0~15°
0.300
MAX
MIN
0.25 +0.10
–0.05
0.010+0.004
–0.002
8-DIP
LM311
7
Mechanical Dimensions (Continued)
Package
4.92 ±0.20
0.194 ±0.008
0.41 ±0.10
0.016 ±0.004
1.27
0.050
5.72
0.225
1.55 ±0.20
0.061 ±0.008
0.1~0.25
0.004~0.001
6.00 ±0.30
0.236 ±0.012
3.95 ±0.20
0.156 ±0.008
0.50 ±0.20
0.020 ±0.008
5.13
0.202 MAX
#1
#4 #5
0~8°
#8
0.56
0.022
()
1.80
0.071
MAX0.10
MAX0.004
MAX
MIN
+0.10
-0.05
0.15+0.004
-0.002
0.006
8-SOP
LM311
8
Ordering Information
Product Number Package Operating Temperature
LM311N 8-DIP 0 ~ +70°C
LM311M 8-SOP
LM311
9
LM311
6/1/01 0.0m 001
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2001 Fairchild Semicond uctor Corporation
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reasonably expected to result in a significant injury of the
user.
2. A critical component in any component of a life support
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reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effec tiv ene ss.
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