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Part: LM311N/LM311M
Category:
Analog & Mixed-Signal Processing
-> Comparators
-> General Purpose
Description: LM211 - Voltage Comparator, Package: TO-5, Pin Nb=8
Company: National Semiconductor Corporation
Datasheet: Download LM311N/LM311M datasheet File size : 1094 kB
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Datasheet text preview:
LM111/LM211/LM311 Voltage Comparator
January 2001
LM111/LM211/LM311 Voltage Comparator
1.0 General Description
The LM111, LM211 and LM311 are voltage comparators that have input currents nearly a thousand times lower than devices like the LM106 or LM710. They are also designed to operate over a wider range of supply voltages: from standard ± 15V op amp 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. Further, they can drive lamps or relays, switching voltages up to 50V at currents as high as 50 mA. Both the inputs and the outputs of the LM111, LM211 or the LM311 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 OR'ed. Although slower than the LM106 and LM710 (200 ns response time vs 40 ns) the devices are also much less prone to spurious oscillations. The LM111 has the same pin configuration as the LM106 and LM710. The LM211 is identical to the LM111, except that its performance is specified over a -25°C to +85°C temperature range instead of -55°C to +125°C. The LM311 has a temperature range of 0°C to +70°C.
2.0 Features
n n n n n Operates from single 5V supply Input current: 150 nA max. over temperature Offset current: 20 nA max. over temperature Differential input voltage range: ± 30V Power consumption: 135 mW at ± 15V
3.0 Typical Applications
Offset Balancing
(Note 3) Strobing
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Note: Do Not Ground Strobe Pin. Output is turned off when current is pulled from Strobe Pin.
Increasing Input Stage Current (Note 1)
Detector for Magnetic Transducer
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Note 1: Increases typical common mode slew from 7.0V/µs to 18V/µs.
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© 2001 National Semiconductor Corporation
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LM111/LM211/LM311
3.0 Typical Applications
(Note 3) (Continued) Relay Driver with Strobe
Digital Transmission Isolator
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*Absorbs inductive kickback of relay and protects IC from severe voltage transients on V++ line. Note: Do Not Ground Strobe Pin.
Strobing off Both Input and Output Stages (Note 2)
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Note: Do Not Ground Strobe Pin. Note 2: Typical input current is 50 pA with inputs strobed off. Note 3: Pin connections shown on schematic diagram and typical applications are for H08 metal can package.
Positive Peak Detector
Zero Crossing Detector Driving MOS Logic
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*Solid tantalum
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LM111/LM211/LM311
4.0 Absolute Maximum Ratings for the LM111/LM211(Note 10)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Total Supply Voltage (V84) Output to Negative Supply Voltage (V74) Ground to Negative Supply Voltage (V14) Differential Input Voltage Input Voltage (Note 4) Output Short Circuit Duration 36V 50V 30V ± 30V ± 15V 10 sec
Operating Temperature Range LM111 -55°C to 125°C LM211 -25°C to 85°C Lead Temperature (Soldering, 10 sec) 260°C Voltage at Strobe Pin V+-5V Soldering Information Dual-In-Line Package Soldering (10 seconds) 260°C Small Outline Package Vapor Phase (60 seconds) 215°C Infrared (15 seconds) 220°C See AN-450 "Surface Mounting Methods and Their Effect on Product Reliability" for other methods of soldering surface mount devices. ESD Rating (Note 11) 300V
Electrical Characteristics (Note 6)
for the LM111 and LM211 Parameter Input Offset Voltage (Note 7) Input Offset Current Input Bias Current Voltage Gain Response Time (Note 8) Saturation Voltage Strobe ON Current (Note 9) Output Leakage Current Input Offset Voltage (Note 7) Input Offset Current (Note 7) Input Bias Current Input Voltage Range Saturation Voltage Output Leakage Current Positive Supply Current Negative Supply Current V+ = 15V, V- = -15V, Pin 7 Pull-Up May Go To 5V V+4.5V, V- = 0 VIN-6 mV, IOUT8 mA VIN5 mV, VOUT = 35V TA = 25°C TA = 25°C 0.1 5.1 4.1 0.5 6.0 5.0 µA mA mA 0.23 0.4 V -14.5 13.8,-14.7 TA = 25°C TA = 25°C TA = 25°C TA = 25°C VIN-5 mV, IOUT = 50 mA TA = 25°C TA = 25°C VIN5 mV, VOUT = 35V TA = 25°C, ISTROBE = 3 mA RS50 k 4.0 20 150 13.0 mV nA nA V 2.0 0.2 5.0 10 mA nA 40 Conditions TA = 25°C, RS50k Min Typ 0.7 4.0 60 200 200 0.75 1.5 Max 3.0 10 100 Units mV nA nA V/mV ns V
Note 4: This rating applies for ± 15 supplies. The positive input voltage limit is 30V above the negative supply. The negative input voltage limit is equal to the negative supply voltage or 30V below the positive supply, whichever is less. Note 5: The maximum junction temperature of the LM111 is 150°C, while that of the LM211 is 110°C. For operating at elevated temperatures, devices in the H08 package must be derated based on a thermal resistance of 165°C/W, junction to ambient, or 20°C/W, junction to case. The thermal resistance of the dual-in-line package is 110°C/W, junction to ambient. Note 6: These specifications apply for VS = ± 15V and Ground pin at ground, and -55°CTA+125°C, unless otherwise stated. With the LM211, however, all temperature specifications are limited to -25°CTA+85°C. The offset voltage, offset current and bias current specifications apply for any supply voltage from a single 5V supply up to ± 15V supplies. Note 7: The offset voltages and offset currents given are the maximum values required to drive the output within a volt of either supply with a 1 mA load. Thus, these parameters define an error band and take into account the worst-case effects of voltage gain and RS. Note 8: The response time specified (see definitions) is for a 100 mV input step with 5 mV overdrive. Note 9: This specification gives the range of current which must be drawn from the strobe pin to ensure the output is properly disabled. Do not short the strobe pin to ground; it should be current driven at 3 to 5 mA. Note 10: Refer to RETS111X for the LM111H, LM111J and LM111J-8 military specifications. Note 11: Human body model, 1.5 k in series with 100 pF.
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LM111/LM211/LM311
5.0 Absolute Maximum Ratings for the LM311(Note 12)
If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. Total Supply Voltage (V84) Output to Negative Supply Voltage (V74) Ground to Negative Supply Voltage (V14) Differential Input Voltage Input Voltage (Note 13) Power Dissipation (Note 14) ESD Rating (Note 19) Output Short Circuit Duration 36V 40V 30V ± 30V ± 15V 500 mW 300V 10 sec
Operating Temperature Range 0° to 70°C Storage Temperature Range -65°C to 150°C Lead Temperature (soldering, 10 sec) 260°C Voltage at Strobe Pin V+-5V Soldering Information Dual-In-Line Package Soldering (10 seconds) 260°C Small Outline Package Vapor Phase (60 seconds) 215°C Infrared (15 seconds) 220°C See AN-450 "Surface Mounting Methods and Their Effect on Product Reliability" for other methods of soldering surface mount devices.
Electrical Characteristics (Note 15)
for the LM311 Parameter Input Offset Voltage (Note 16) Input Offset Current(Note 16) Input Bias Current Voltage Gain Response Time (Note 17) Saturation Voltage Strobe ON Current (Note 18) Output Leakage Current TA = 25°C TA = 25°C TA = 25°C TA = 25°C VIN-10 mV, IOUT = 50 mA TA = 25°C TA = 25°C VIN10 mV, VOUT = 35V TA = 25°C, ISTROBE = 3 mA V- = Pin 1 = -5V Input Offset Voltage (Note 16) Input Offset Current (Note 16) Input Bias Current Input Voltage Range Saturation Voltage Positive Supply Current Negative Supply Current V+4.5V, V- = 0 VIN-10 mV, IOUT8 mA TA = 25°C TA = 25°C 5.1 4.1 7.5 5.0 mA mA -14.5 13.8,-14.7 0.23 RS50K 10 70 300 13.0 0.4 mV nA nA V V 0.2 50 nA 2.0 5.0 mA 40 Conditions TA = 25°C, RS50k Min Typ 2.0 6.0 100 200 200 0.75 1.5 Max 7.5 50 250 Units mV nA nA V/mV ns V
Note 12: "Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is functional, but do not guarantee specific performance limits." Note 13: This rating applies for ± 15V supplies. The positive input voltage limit is 30V above the negative supply. The negative input voltage limit is equal to the negative supply voltage or 30V below the positive supply, whichever is less. Note 14: The maximum junction temperature of the LM311 is 110°C. For operating at elevated temperature, devices in the H08 package must be derated based on a thermal resistance of 165°C/W, junction to ambient, or 20°C/W, junction to case. The thermal resistance of the dual-in-line package is 100°C/W, junction to ambient. Note 15: These specifications apply for VS = ± 15V and Pin 1 at ground, and 0°C < TA < +70°C, unless otherwise specified. The offset voltage, offset current and bias current specifications apply for any supply voltage from a single 5V supply up to ± 15V supplies. Note 16: 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 RS. Note 17: The response time specified (see definitions) is for a 100 mV input step with 5 mV overdrive. Note 18: This specification gives the range of current which must be drawn from the strobe pin to ensure the output is properly disabled. Do not short the strobe pin to ground; it should be current driven at 3 to 5 mA. Note 19: Human body model, 1.5 k in series with 100 pF.
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LM111/LM211/LM311
6.0 LM111/LM211 Typical Performance Characteristics
Input Bias Current Input Bias Current
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Input Bias Current
Input Bias Current
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Input Bias Current
Input Bias Current
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