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Philips Semiconductors Linear Products
Product specification
Voltage comparator
LM111/211/311/ LM311B
DESCRIPTION
The LM111 series are voltage comparators that have input currents approximately a hundred times lower than devices like the A710. They are designed to operate over a wider range of supply voltages; from standard 15V op amp supplies down to a single 3V supply. 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 50mA. Both the inputs and the outputs of the LM111 series 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-ORed. Although slower than the A710 (200ns response time vs 40ns), the devices are also much less prone to spurious oscillations. The LM111 series has the same pin configuration as the A710 series.
PIN CONFIGURATION
D, FE, N PACKAGES
GND INPUT INPUT V-
1 2 3 4
8 7 6 5
V+ OUTPUT BAL/STROBE BALANCE
+ -
APPLICATIONS
FEATURES
* Operates from single 3V supply (LM311B) * Maximum input bias current: 150nA (LM311--250nA) * Maximum offset current: 20nA (LM311--50nA) * Differential input voltage range: 30V * Power consumption: 135mW at 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 * Low voltage adjustable reference supply * Switching power amplifier
TEMPERATURE RANGE -55C to +125C -25C to +85C 0 to +70C 0 to +70C -25C to +85C -55C to +125C 0 to +70C 0 to +70C
ORDER CODE LM111N LM211N LM311D LM311N LM211D LM111FE LM311BD LM311BN
DWG # 0404B 0404B 0174C 0404B 0174C 0580A 0174C 0404B
August 31, 1994
273
853-0927 13721
Philips Semiconductors Linear Products
Product specification
Voltage comparator
LM111/211/311/ LM311B
EQUIVALENT SCHEMATIC
BALANCE/ STROBE BALANCE V+
R3 300
R1 1.3K
R4 300
R2 1.3K Q8 Q7
R8 750 Q10
R9 600
R5 70
Q20 Q11 Q12
Q5
R6 1.2K
R7 1.2K Q8
Q13 Q19 R10 4K Q14 Q18 R17 60 Q2 R15 400 R11 130 Q15 OUTPUT
Q3 Q1 D1 5V D2 5V Q4
Q9
INPUTS
Q23 Q22
R15 450
R12 600 Q18
Q2 R19 250
R18 200
R14 2K
Q17 R13 4
V-
ABSOLUTE MAXIMUM RATINGS
SYMBOL VS Total supply voltage Output to negative supply voltage: LM111/LM211 LM311/LM311B Ground to negative supply voltage Differential input voltage VIN PD MAX Input voltage1 Maximum power dissipation, TA=25C (still-air)2 F package N package D package I TA Output short-circuit duration Operating ambient temperature range LM111 LM211 LM311/LM311B TSTG TSOLD Storage temperature range Lead soldering temperature (10sec max) -55 to +125 -25 to +85 0 to +70 -65 to +150 300 C C C C C 810 1190 780 10 mW mW mW sec 50 40 30 30 15 V V V V V PARAMETER RATING 36 UNIT V
NOTES: 1. 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. 2. Derate above 25C, at the following rates: F package at 6.4mW/C; N package at 9.5mW/C; D package at 6.2m/WC
August 31, 1994
274
Philips Semiconductors Linear Products
Product specification
Voltage comparator
LM111/211/311/ LM311B
DC ELECTRICAL CHARACTERISTICS1, 2, 3, 6
Over temperature range unless otherwise specified. SYMBOL VOS IOS IBIAS AV PARAMETER Input offset voltage3 Input offset current3 Input bias current Voltage gain Response time4 TEST CONDITIONS TA=25C, RS50k TA=25C TA=25C TA=25C TA=25C LM111/211 VIN-5mV, IOUT=50mA LM311/B VIN-10mV, IOUT=50mA TA=25C TA=25C LM111/211 VIN5mV, VOUT=35V LM311/B VIN10mV, VOUT=35V TA=25C, ISTROBE=3mA (V- = VGND = -5V) RS50k LM111/LM211 Min Typ 0.7 4.0 60 200 200 Max 3.0 10 100 Min LM311 Typ 2.0 6.0 100 200 200 Max 7.5 50 250 Min LM311B Typ 2.0 6 100 200 500 Max 7.5 25 200 UNIT mV nA nA V/mV ns
VSAT
Saturation voltage
0.75
1.5
0.75
1.5
0.75
1.5
V
IBAL/STR
Strobe on current
3.0
3.0
3.0
mA
ILEAKAGE
Output leakage current6
0.2
10
0.2
50
0.2
50
nA
VOS IOS IBIAS VIN
Input offset voltage3 Input offset current3 Input bias current Input voltage range
4.0 20 150 13.8 to -14.7 13.8 to -14.7
10 70 300 -14.5 13.0 V- +0.5
10 50 250 V+ -1.5
mV nA nA V
V=15V (Pin 7 may go to 5V) V+ 4.5V, V- = 0 LM111/211 VIN-6mV, ISINK8mA LM311/B VIN-10mV, ISINK8mA VIN5mV, VOUT=35V TA=25C TA=25C
-14.5
13.0
VOL
Saturation voltage6
0.23
0.4
0.23
0.4
0.23
0.4
V
IOH ICC IEE
Output leakage current Positive supply current Negative supply voltage
0.1 5.1 4.1
0.5 6.0 5.0 5.1 4.1 7.5 5.0 1.6 3.5
A mA mA
NOTES: 1. 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. 2. These specifications apply for VS=15V and 0C < TA < 70C unless otherwise specified. With the LM211, however, all temperature specifications are limited to -25C TA 85C and for the LM111 is limited to -55C TA < 125C. The offset voltage, offset current, and bias current specifications apply for any supply voltage from a single 5V supply up to 15V supplies. 3. The offset voltages and offset currents given are the maximum values required to drive the output within a volt of either supply with 1mA load. Thus, these parameters define an error band and take into account the worst case effects of voltage gain and input impedance. 4. The response time specified is for a 100mV input step with 5mV over-drive. 5. Do not short the strobe pin to ground; it should be current driven at 3mA to 5mA. 6. LM311B, all parameters are at V+ = 3V 10%, V- = GND = 0V.
August 31, 1994
275
Philips Semiconductors Linear Products
Product specification
Voltage comparator
LM111/211/311/ LM311B
TYPICAL APPLICATIONS
V+ 5V BAL R1 5 3K 2 INPUT 3 + - 4 6 LM311 1 8 7 R3 10K R2 3K V+ = 5V TO MOS LOGIC R1 4.5K 2 + - 4 C1 R2 47K V- = 10V MAGNETIC PICKUP 3 R4 82K 8 LM311 1 R2 1K 3 7 TTL OUTPUT R3 2K R1 240K INPUT LM311 - 4 1 TO TTL OUTPUT V+ = 5V
R3 82K 2 + 8 7
R5 1K
* Values shown are for a 0 to 30V logic swing and a 15V threshold. ** May be added to control speed and reduce susceptibility to noise spikes.
Zero Detector Driving MOS Logic
Detector for Magnetic Transducer
TTL Interface with High Level Logic
August 31, 1994
276

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