Philips Semiconductors Linear Products Product specification
LM111/211/311/
LM311B
Voltage comparator
273
August 31, 1994 853-0927 13721
DESCRIPTION
The LM111 series are voltage comparators that have input currents
approximately a hundred times lower than devices like the µA710.
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 µA710 (200ns response time vs 40ns), the
devices are also much less prone to spurious oscillations. The LM1 11
series has the same pin configuration as the µA710 series.
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
PIN CONFIGURATION
1
2
3
4 5
6
7
8
D, FE, N PACKAGES
GND
INPUT
INPUT
V–
V+
OUTPUT
BAL/STROBE
BALANCE
+
–
APPLICATIONS
•Precision squarer
•Positive/negative peak detector
•Low voltage adjustable reference supply
•Switching power amplifier
ORDERING INFORMATION
DESCRIPTION TEMPERATURE RANGE ORDER CODE DWG #
8-Pin Plastic Dual In-Line Package (DIP) -55°C to +125°C LM111N 0404B
8-Pin Plastic Dual In-Line Package (DIP) -25°C to +85°C LM211N 0404B
8-Pin Plastic Small Outline Package (SO) 0 to +70°C LM311D 0174C
8-Pin Plastic Dual In-Line Package (DIP) 0 to +70°C LM311N 0404B
8-Pin Plastic Small Outline Package (SO) -25°C to +85°C LM211D 0174C
8-Pin Ceramic Dual In-Line Package (CERDIP) -55°C to +125°C LM111FE 0580A
8-Pin Plastic Small Outline Package (SO) 0 to +70°C LM311BD 0174C
8-Pin Plastic Dual In-Line Package (DIP) 0 to +70°C LM311BN 0404B
Philips Semiconductors Linear Products Product specification
LM111/211/311/
LM311B
Voltage comparator
August 31, 1994 274
EQUIVALENT SCHEMATIC
BALANCE/
STROBE BALANCE
R3
300 R1
1.3K R4
300 R2
1.3K
Q8
R5
70
Q5 R6
1.2K R7
1.2K
Q7
Q3
R8
750
Q10
R9
600
Q11 Q20
Q19
Q8
Q9 Q18
R10
4K
Q13
Q12
Q14 OUTPUT
V+
Q15
R11
130
R12
600
R13
4
Q18
V–
Q17
R15
450
R15
400
R14
2K
R17
60
Q22
R18
200
Q4
Q2
Q23
R19
250
Q2
D1
5V D2
5V
Q1
INPUTS
ABSOLUTE MAXIMUM RATINGS
SYMBOL PARAMETER RATING UNIT
VSTotal supply voltage 36 V
Output to negative supply voltage:
LM111/LM211 50 V
LM311/LM311B 40 V
Ground to negative supply voltage 30 V
Differential input voltage ±30 V
VIN Input voltage1±15 V
PD MAX Maximum power dissipation,
TA=25°C (still-air)2
F package 810 mW
N package 1190 mW
D package 780 mW
I Output short-circuit duration 10 sec
TAOperating ambient temperature range
LM111 -55 to +125 °C
LM211 -25 to +85 °C
LM311/LM311B 0 to +70 °C
TSTG Storage temperature range -65 to +150 °C
TSOLD Lead soldering temperature
(10sec max) 300 °C
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 25°C, at the following rates: F package at 6.4mW/°C; N package at 9.5mW/°C; D package at 6.2m/W°C
Philips Semiconductors Linear Products Product specification
LM111/211/311/
LM311B
Voltage comparator
August 31, 1994 275
DC ELECTRICAL CHARACTERISTICS1, 2, 3, 6
Over temperature range unless otherwise specified.
SYMBOL
PARAMETER
TEST CONDITIONS
LM111/LM211 LM311 LM311B
UNIT
SYMBOL
PARAMETER
TEST CONDITIONS
Min Typ Max Min Typ Max Min Typ Max
UNIT
VOS Input offset voltage3TA=25°C, RS≤50kΩ0.7 3.0 2.0 7.5 2.0 7.5 mV
IOS Input offset current3TA=25°C 4.0 10 6.0 50 6 25 nA
IBIAS Input bias current TA=25°C 60 100 100 250 100 200 nA
AVVoltage gain TA=25°C 200 200 200 V/mV
Response time4TA=25°C 200 200 500 ns
VSAT Saturation voltage
LM111/211 VIN≤-5mV,
IOUT=50mA
LM311/B VIN≤-10mV,
IOUT=50mA
TA=25°C
0.75 1.5 0.75 1.5 0.75 1.5 V
IBAL/STR Strobe on current TA=25°C 3.0 3.0 3.0 mA
ILEAKAGE Output leakage current6
LM111/211 VIN≥5mV,
VOUT=35V
LM311/B VIN≥10mV,
VOUT=35V
TA=25°C,
ISTROBE=3mA
(V– = VGND = –5V)
0.2 10 0.2 50 0.2 50 nA
VOS Input offset voltage3RS≤50kΩ4.0 10 10 mV
IOS Input offset current320 70 50 nA
IBIAS Input bias current 150 300 250 nA
VIN Input voltage range V=±15V (Pin 7 may go
to 5V) -14.5 13.8
to
-14.7 13.0 -14.5 13.8
to
-14.7 13.0 V–
+0.5 V+
–1.5 V
VOL Saturation voltage6
V+ ≥ 4.5V, V- = 0
LM111/211 VIN≤-6mV,
ISINK≤8mA
LM311/B VIN≤-10mV,
ISINK≤8mA
0.23 0.4 0.23 0.4 0.23 0.4 V
IOH Output leakage current VIN≥5mV, VOUT=35V 0.1 0.5 µA
ICC Positive supply current TA=25°C 5.1 6.0 5.1 7.5 1.6 3.5 mA
IEE Negative supply voltage TA=25°C 4.1 5.0 4.1 5.0 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 0°C < TA < 70°C unless otherwise specified. With the LM211, however, all temperature
specifications are limited to -25°C ≤ TA ≤ 85°C and for the LM111 is limited to -55°C TA < 125°C. 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.
Philips Semiconductors Linear Products Product specification
LM111/211/311/
LM311B
Voltage comparator
August 31, 1994 276
TYPICAL APPLICATIONS
INPUT
R1
3K
BAL R2
3K
V+ = 5V
TO
MOS
LOGIC
R3
10K
V– = 10V
5
68
7
1
4
3
2
INPUT +
–
LM311
+
–
LM311
V+ 5V
R3
2K
TTL
OUTPUT
87
3
2
4
1
R1
4.5K
R2
1K
MAGNETIC
PICKUP
+
–
LM311
V+ = 5V
TO TTL
OUTPUT
2
3
87
1
4
R4
82K
R2
47K
C1
R1
240K
R3
82K R5
1K
Zero Detector
Driving MOS Logic Detector for Magnetic
Transducer TTL Interface with High
Level Logic
* 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.
