Voltage comparator LM111/211/311/ LM311B DESCRIPTION LM

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Voltage comparator LM111/211/311/ LM311B DESCRIPTION LM

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Voltage comparator
LM111/211/311/ LM311B
DESCRIPTION
LM111 series voltage comparators that have input currents approximately hundred times lower than devices like µA710. They designed operate over wider range supply voltages; from standard ±15V supplies down single supply. Their output compatible with RTL, DTL, well circuits. Further, they drive lamps relays, switching voltages currents high 50mA. Both inputs outputs LM111 series isolated from system ground, output drive loads referred ground, positive supply, negative supply. Offset balancing strobe capability provided outputs wire-ORed. Although slower than µA710 (200ns response time 40ns), devices also much less prone spurious oscillations. LM111 series same configuration µA710 series.
CONFIGURATION
PACKAGES
INPUT INPUT
OUTPUT BAL/STROBE BALANCE
APPLICATIONS
FEATURES
Operates from single supply (LM311B) Maximum input bias current: 150nA (LM311-250nA) Maximum offset current: 20nA (LM311-50nA) Differential input voltage range: ±30V Power consumption: 135mW ±15V High sensitivity-200V/mV Zero crossing detector
ORDERING INFORMATION
DESCRIPTION 8-Pin Plastic Dual In-Line Package (DIP) 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 Ceramic Dual In-Line Package (CERDIP) 8-Pin Plastic Small Outline Package (SO) 8-Pin Plastic Dual In-Line Package (DIP)
Precision squarer Positive/negative peak detector voltage adjustable reference supply Switching power amplifier
TEMPERATURE RANGE -55°C +125°C -25°C +85°C +70°C +70°C -25°C +85°C -55°C +125°C +70°C +70°C
ORDER CODE LM111N LM211N LM311D LM311N LM211D LM111FE LM311BD LM311BN
0404B 0404B 0174C 0404B 0174C 0580A 0174C 0404B
August 1994
853-0927 13721
Voltage comparator
LM111/211/311/ LM311B
EQUIVALENT SCHEMATIC
BALANCE/ STROBE BALANCE
1.3K
1.3K
1.2K
1.2K
OUTPUT
INPUTS
ABSOLUTE MAXIMUM RATINGS
SYMBOL Total supply voltage Output negative supply voltage: LM111/LM211 LM311/LM311B Ground negative supply voltage Differential input voltage Input voltage1 Maximum power dissipation, TA=25°C (still-air)2 package package package Output short-circuit duration Operating ambient temperature range LM111 LM211 LM311/LM311B TSTG TSOLD Storage temperature range Lead soldering temperature (10sec max) +125 +150 1190 PARAMETER RATING UNIT
NOTES: This rating applies ±15V supplies. positive input voltage limit above negative supply. negative input voltage limit equal negative supply voltage below positive supply, whichever less. Derate above 25°C, following rates: package 6.4mW/°C; package 9.5mW/°C; package 6.2m/W°C
August 1994
Voltage comparator
LM111/211/311/ LM311B
ELECTRICAL CHARACTERISTICS1,
Over temperature range unless otherwise specified. SYMBOL IBIAS PARAMETER Input offset voltage3 Input offset current3 Input bias current Voltage gain Response time4 TEST CONDITIONS TA=25°C, RS50k TA=25°C TA=25°C TA=25°C TA=25°C LM111/211 VIN-5mV, IOUT=50mA LM311/B VIN-10mV, IOUT=50mA TA=25°C TA=25°C LM111/211 VIN5mV, VOUT=35V LM311/B VIN10mV, VOUT=35V TA=25°C, ISTROBE=3mA VGND -5V) RS50k LM111/LM211 LM311 LM311B UNIT V/mV
VSAT
Saturation voltage
0.75
0.75
0.75
IBAL/STR
Strobe current
ILEAKAGE
Output leakage current6
IBIAS
Input offset voltage3 Input offset current3 Input bias current Input voltage range
13.8 -14.7 13.8 -14.7
-14.5 13.0 +0.5
-1.5
V=±15V (Pin 4.5V, LM111/211 VIN-6mV, ISINK8mA LM311/B VIN-10mV, ISINK8mA VIN5mV, VOUT=35V TA=25°C TA=25°C
-14.5
13.0
Saturation voltage6
0.23
0.23
0.23
Output leakage current Positive supply current Negative supply voltage
NOTES: This rating applies ±15V supplies. positive input voltage limit above negative supply. negative input voltage limit equal negative supply voltage below positive supply, whichever less. These specifications apply VS=±15V 70°C unless otherwise specified. With LM211, however, temperature specifications limited -25°C 85°C LM111 limited -55°C 125°C. offset voltage, offset current, bias current specifications apply supply voltage from single supply ±15V supplies. offset voltages offset currents given maximum values required drive output within volt either supply with load. Thus, these parameters define error band take into account worst case effects voltage gain input impedance. response time specified 100mV input step with over-drive. short strobe ground; should current driven 5mA. LM311B, parameters ±10%,
August 1994
Voltage comparator
LM111/211/311/ LM311B
TYPICAL APPLICATIONS
INPUT LM311 LOGIC 4.5K MAGNETIC PICKUP LM311 OUTPUT 240K INPUT LM311 OUTPUT
Values shown logic swing threshold. added control speed reduce susceptibility noise spikes.
Zero Detector Driving Logic
Detector Magnetic Transducer
Interface with High Level Logic
August 1994

Voltage comparator LM111/211/311/ LM311B DESCRIPTION LM

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