LM111J National Semiconductor, LM111J Datasheet

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LM111J

Manufacturer Part Number
LM111J
Description
Manufacturer
National Semiconductor
Datasheet

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© 2004 National Semiconductor Corporation
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
±
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)
3.0 Typical Applications
Note 1: Increases typical common mode slew from 7.0V/µs to 18V/µs.
15V op amp supplies down to the single 5V supply used for
Increasing Input Stage Current (Note 1)
Offset Balancing
00570438
00570436
DS005704
(Note 3)
the devices are also much less prone to spurious oscilla-
tions. The LM111 has the same pin configuration as the
LM106 and LM710.
The LM211 is identical to the LM111, except that its perfor-
mance 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 Operates from single 5V supply
n Input current: 150 nA max. over temperature
n Offset current: 20 nA max. over temperature
n Differential input voltage range:
n Power consumption: 135 mW at
Note: Do Not Ground Strobe Pin. Output is turned off when current is
pulled from Strobe Pin.
Detector for Magnetic Transducer
Strobing
00570437
±
±
30V
15V
00570439
January 2001
www.national.com

Related parts for LM111J

LM111J Summary of contents

Page 1

... Increasing Input Stage Current (Note 1) 00570438 Note 1: Increases typical common mode slew from 7.0V/µs to 18V/µs. © 2004 National Semiconductor Corporation the devices are also much less prone to spurious oscilla- tions. The LM111 has the same pin configuration as the LM106 and LM710. ...

Page 2

Typical Applications Digital Transmission Isolator Note: Do Not Ground Strobe Pin. Note 2: Typical input current with inputs strobed off. Note 3: Pin connections shown on schematic diagram and typical applications are for H08 metal can ...

Page 3

... 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 mA. Note 10: Refer to RETS111X for the LM111H, LM111J and LM111J-8 military specifications. Note 11: Human body model, 1.5 kΩ in series with 100 pF. ...

Page 4

... 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 ( Output to Negative Supply Voltage ( Ground to Negative Supply Voltage ( Differential Input Voltage Input Voltage (Note 13) ...

Page 5

LM111/LM211 Typical Performance Characteristics Input Bias Current Input Bias Current Input Bias Current 00570443 00570445 00570447 5 Input Bias Current 00570444 Input Bias Current 00570446 Input Bias Current 00570448 www.national.com ...

Page 6

LM111/LM211 Typical Performance Characteristics Input Bias Current Input Overdrives Input Bias Current Response Time for Various Input Overdrives www.national.com Input Bias Current 00570449 Response Time for Various 00570451 Output Limiting Characteristics 00570453 6 (Continued) Input Overdrives 00570450 Input Overdrives ...

Page 7

LM111/LM211 Typical Performance Characteristics Supply Current Leakage Currents 7.0 LM311 Typical Performance Characteristics Input Bias Current 00570455 00570457 00570458 7 (Continued) Supply Current 00570456 Input Offset Current 00570459 www.national.com ...

Page 8

LM311 Typical Performance Characteristics Offset Error Common Mode Limits Response Time for Various Input Overdrives www.national.com (Continued) Input Characteristics 00570460 00570462 Response Time for Various 00570464 8 00570461 Transfer Function 00570463 Input Overdrives 00570465 ...

Page 9

LM311 Typical Performance Characteristics Output Saturation Voltage Response Time for Various Input Overdrives Supply Current (Continued) Response Time for Various 00570466 Output Limiting Characteristics 00570468 00570470 9 Input Overdrives 00570467 00570469 Supply Current 00570471 www.national.com ...

Page 10

LM311 Typical Performance Characteristics Leakage Currents 8.0 Application Hints 8.1 CIRCUIT TECHNIQUES FOR AVOIDING OSCILLATIONS IN COMPARATOR APPLICATIONS When a high-speed comparator such as the LM111 is used with fast input signals and low source impedances, the out- put ...

Page 11

Application Hints (Continued) 7. When both inputs of the LM111 are connected to active signals high-impedance signal is driving the positive input of the LM111 so that positive feedback would be disruptive, the circuit of Figure ...

Page 12

Application Hints FIGURE 3. Positive Feedback with High Source Resistance 9.0 Typical Applications refer to H08 package) Zero Crossing Detector Driving MOS Switch www.national.com (Continued) (Pin numbers 100 kHz Free Running Multivibrator 00570413 *TTL or DTL fanout of two ...

Page 13

Typical Applications *Adjust for symmetrical square wave time when V † Minimum capacitance 20 pF Maximum frequency 50 kHz Driving Ground-Referred Load 00570416 *Input polarity is reversed when using pin 1 as output. *Values shown are for a 0 ...

Page 14

Typical Applications Crystal Oscillator *Solid tantalum † Adjust to set clamp level www.national.com (Pin numbers refer to H08 package) (Continued) Comparator and Solenoid Driver 00570419 Precision Squarer 14 00570420 00570421 ...

Page 15

Typical Applications *Solid tantalum Positive Peak Detector *Solid tantalum *Solid tantalum (Pin numbers refer to H08 package) (Continued) Low Voltage Adjustable Reference Supply Zero Crossing Detector Driving MOS Logic 00570423 Negative Peak Detector 15 00570422 00570424 00570425 www.national.com ...

Page 16

Typical Applications *R2 sets the comparison level. At comparison, the photodiode has less than 5 mV across it, decreasing leakages by an order of magnitude. www.national.com (Pin numbers refer to H08 package) (Continued) Precision Photodiode Comparator Switching Power Amplifier ...

Page 17

Typical Applications (Pin numbers refer to H08 package) (Continued) Switching Power Amplifier 17 00570428 www.national.com ...

Page 18

Schematic Diagram Note 20: Pin connections shown on schematic diagram are for H08 package. www.national.com (Note 20) 18 00570405 ...

Page 19

... Connection Diagrams Note: Pin 4 connected to case Order Number LM111H, LM111H/883(Note 21) , LM211H or LM311H Dual-In-Line Package Top View Order Number LM111J-8, LM111J-8/883(Note 21), LM311M, LM311MX or LM311N See NS Package Number J08A, M08A or N08E Order Number LM111W/883(Note 21), LM111WG/883 Note 21: Also available per JM38510/10304 Metal Can Package ...

Page 20

... Physical Dimensions Order Number LM111H, LM111H/883, LM211H or LM311H www.national.com inches (millimeters) unless otherwise noted Metal Can Package (H) NS Package Number H08C Cavity Dual-In-Line Package (J) Order Number LM111J-8, LM111J-8/883 NS Package Number J08A 20 ...

Page 21

... Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Dual-In-Line Package (J) Order Number LM111J/883 NS Package Number J14A Dual-In-Line Package (M) Order Number LM311M, LM311MX NS Package Number M08A 21 www.national.com ...

Page 22

Physical Dimensions www.national.com inches (millimeters) unless otherwise noted (Continued) Dual-In-Line Package (N) Order Number LM311N NS Package Number N08E Order Number LM111W/883, LM111WG/883 NS Package Number W10A, WG10A 22 ...

Page 23

... BANNED SUBSTANCE COMPLIANCE National Semiconductor certifies that the products and packing materials meet the provisions of the Customer Products Stewardship Specification (CSP-9-111C2) and the Banned Substances and Materials of Interest Specification (CSP-9-111S2) and contain no ‘‘Banned Substances’’ as defined in CSP-9-111S2. ...

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