LM111, LM211, LM311
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007C – SEPTEMBER 1973 – REVISED OCTOBER 2000
LM111 . . . JG PACKAGE
LM211, LM311 . . . D, P, OR PW PACKAGE
(TOP VIEW)
EMIT OUT
IN+
IN–
VCC–
8
2
7
3
6
4
5
VCC+
COL OUT
BAL/STRB
BALANCE
LM111 . . . FK PACKAGE
(TOP VIEW)
description
NC
IN+
NC
IN–
NC
4
3 2 1 20 19
18
5
17
6
16
7
15
8
14
9 10 11 12 13
NC
VCC–
The LM111, LM211, and LM311 are single
high-speed voltage comparators. These devices
are designed to operate from a wide range of
power-supply voltages, including ±15-V supplies
for operational amplifiers and 5-V supplies for
logic systems. The output levels are compatible
with most TTL and MOS circuits. These
comparators are capable of driving lamps or
relays and switching voltages up to 50 V at 50 mA.
All inputs and outputs can be isolated from system
ground. The outputs can drive loads referenced to
ground, VCC+ or VCC–. Offset balancing and
strobe capabilities are available, and the outputs
can be wire-OR connected. If the strobe is low, the
output is in the off state, regardless of the
differential input.
1
NC
COL OUT
NC
BAL/STRB
NC
NC
BALANCE
NC
D
Fast Response Times
Strobe Capability
Maximum Input Bias Current . . . 300 nA
Maximum Input Offset Current . . . 70 nA
Can Operate From Single 5-V Supply
Designed to Be Interchangeable With
National Semiconductor LM111, LM211, and
LM311
Available in Q-Temp Automotive
– High Reliability Automotive Applications
– Configuration Control/Print Support
– Qualification to Automotive Standards
NC
EMIT OUT
NC
VCC+
NC
D
D
D
D
D
D
NC – No internal connection
The LM111 is characterized for operation over the full military temperature range of –55°C to 125°C. The LM211
is characterized for operation from –40°C to 85°C. The LM211Q is characterized for operation over the full
automotive range of –40°C to 125°C. The LM311 is characterized for operation from 0°C to 70°C.
functional block diagram
BALANCE
BAL/STRB
IN+
+
COL OUT
IN–
–
EMIT OUT
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
Copyright  2000, Texas Instruments Incorporated
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
On products compliant to MIL-PRF-38535, all parameters are tested
unless otherwise noted. On all other products, production
processing does not necessarily include testing of all parameters.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
LM111, LM211, LM311
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007C – SEPTEMBER 1973 – REVISED OCTOBER 2000
AVAILABLE OPTIONS
PACKAGED DEVICES
TA
0°C to 70°C
VIO max
AT 25°C
PLASTIC
SMALL
OUTLINE
(D)
CERAMIC
CHIP
CARRIER
(FK)
CERAMIC
DIP
(JG)
PLASTIC
DIP
(P)
PLASTIC
TSSOP
(PW)
LM311PWR
7.5 mV
LM311D
LM311P
–40°C to 85°C
3 mV
LM211D
LM211P
–40°C to 125°C
3 mV
LM211QD
–55°C to 125°C
3 mV
LM111FK
CHIP
FORM
LM311Y
LM111JG
The D package also is available taped and reeled. Add the suffix R to device type (e.g., LM311DR). The PW package
is only available taped and reeled. Chip forms are tested at 25°C only.
schematic
Component Count
Resistors
Diodes
EPI FET
Transistors
BAL/STRB BALANCE
450 Ω
450 Ω
20
2
1
22
VCC+
2.4
kΩ
750 Ω
2.4
kΩ
600 Ω
70 Ω
1.2 kΩ
IN+
1.2 kΩ
4 kΩ
COL OUT
IN–
400 Ω
130 Ω
60 Ω
450 Ω
250 Ω
600 Ω
VCC–
200 Ω
2 kΩ
4Ω
EMIT OUT
All resistor values shown are nominal.
2
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
LM111, LM211, LM311
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007C – SEPTEMBER 1973 – REVISED OCTOBER 2000
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage: VCC+ (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V
VCC– (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –18 V
VCC+ – VCC– . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 V
Differential input voltage, VID (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±30 V
Input voltage, VI (either input, see Notes 1 and 3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±15 V
Voltage from emitter output to VCC– . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 V
Voltage from collector output to VCC–: LM111 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 V
LM211 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 V
LM211Q . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 V
LM311 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V
Duration of output short circuit (see Note 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 s
Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Package thermal impedance, θJA (see Note 5): D package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97°C/W
P package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85°C/W
PW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149°C/W
Case temperature for 60 seconds: FK package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: J or JG package . . . . . . . . . . . . . . . . 300°C
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: D, P, or PW package . . . . . . . . . . . . 260°C
Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65°C to 150°C
† Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTES: 1. All voltage values, unless otherwise noted, are with respect to the midpoint between VCC+ and VCC–.
2. Differential voltages are at IN+ with respect to IN–.
3. The magnitude of the input voltage must never exceed the magnitude of the supply voltage or ±15 V, whichever is less.
4. The output may be shorted to ground or either power supply.
5. The package thermal impedance is calculated in accordance with JESD 51-7.
DISSIPATION RATING TABLE
PACKAGE
TA ≤ 25°C
POWER RATING
DERATING
FACTOR
DERATE
ABOVE TA
TA = 70°C
POWER RATING
TA = 85°C
POWER RATING
TA = 125°C
POWER RATING
FK
500 mW
11.0 mW/°C
105°C
500 mW
500 mW
275 mW
JG
500 mW
8.4 mW/°C
90°C
500 mW
500 mW
210 mW
recommended operating conditions
MIN
MAX
3.5
30
V
VCC–+0.5
–55
VCC+–1.5
125
V
LM111
LM211
–40
85
LM211Q
–40
125
0
70
Supply voltage, VCC+ – VCC–
Input voltage (|VCC±| ≤ 15 V)
Operating free-air
free air temperature range,
range TA
LM311
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
UNIT
°C
3
LM111, LM211, LM311
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007C – SEPTEMBER 1973 – REVISED OCTOBER 2000
electrical characteristics at specified free-air temperature, VCC± = ±15 V (unless otherwise noted)
PARAMETER
TA†
TEST CONDITIONS
25°C
VIO
Input offset voltage
See Note 6
IIO
Input offset current
See Note 6
IIB
Input bias current
VO = 1 V to 14 V
IIL(S)
Low-level
strobe current
(see Note 7)
V(strobe) = 0.3 V,
VICR
Common-mode
input voltage range
AVD
Large-signal
differential voltage
amplification
IOH
High-level
( ll t )
(collector)
output
out
ut leakage
current
0.7
Full range
25°C
4
75
Full range
RL = 1 kΩ
25°C
I(strobe) = –3 mA,,
VID = 5 mV
VOH = 35 V,,
25°C
VID = 5 mV,
VOH = 35 V
VID = –5 mV
25°C
VID = –10 mV
25°C
VCC+ = 4.5 V,
VCC
0,
CC– = 0
IOL = 8 mA
VID = –6 mV
Full range
VID = –10 mV
Full range
3
MAX
2
7.5
10
10
6
100
100
–3
13.8
to
–14.7
13
to
–14.5
13.8
to
–14.7
40
200
40
200
25°C
0.75
VOL
Low-level
(collector-to-emitter)
out
ut voltage
output
ICC+
Supply current
from VCC+,
output low
VID = –10 mV,
No load
25°C
5.1
ICC–
Supply current
from VCC–,
output high
VID = 10 mV,
No load
25°C
–4.1
0.23
250
300
13
to
–14.5
Full range
50
70
–3
0.2
UNIT
TYP‡
150
25°C
VO = 5 V to 35 V,
MIN
20
25°C
VID ≤ –10 mV
LM311
4
Full range
Full range
IOL = 50 mA
LM111
LM211
LM211Q
MIN TYP‡ MAX
mV
nA
nA
mA
V
V/mV
10
nA
0.5
µA
0.2
50
0.75
1.5
nA
1.5
V
0.4
0.23
0.4
6
5.1
7.5
mA
–5
–4.1
–5
mA
† Unless otherwise noted, all characteristics are measured with BALANCE and BAL/STRB open and the emitter output grounded.
Full range for LM111 is –55°C to 125°C, for LM211 is –40°C to 85°C, for LM211Q is –40°C to 125°C, and for LM311 is 0°C to 70°C.
‡ All typical values are at TA = 25°C.
NOTES: 6. The offset voltages and offset currents given are the maximum values required to drive the collector output up to 14 V or down to
1 V with a pullup resistor of 7.5 kΩ to VCC+. These parameters actually define an error band and take into account the worst-case
effects of voltage gain and input impedance.
7. The strobe should not be shorted to ground; it should be current driven at –3 mA to –5 mA (see Figures 13 and 27).
switching characteristics, VCC± = ±15 V, TA = 25°C
PARAMETER
LM111
LM211
LM211Q
LM311
TEST CONDITIONS
MIN
Response time, low-to-high-level output
Response time, high-to-low-level output
RC = 500 Ω to 5 V
V,
CL = 5 pF,
pF
See Note 8
TYP
UNIT
MAX
115
ns
165
ns
NOTE 8: The response time specified is for a 100-mV input step with 5-mV overdrive and is the interval between the input step function and the
instant when the output crosses 1.4 V.
4
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
LM111, LM211, LM311
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007C – SEPTEMBER 1973 – REVISED OCTOBER 2000
electrical characteristics at VCC± = ±15 V, TA = 25°C (unless otherwise noted)
LM311Y
TEST CONDITIONS†
PARAMETER
MIN
TYP
MAX
UNIT
VIO
IIO
Input offset voltage
See Note 6
2
7.5
mV
Input offset current
See Note 6
6
50
nA
IIB
IIL(S)
Input bias current
VO = 1 V to 14 V
V(strobe) = 0.3 V,
100
250
VICR
Common-mode input voltage range
AVD
IOH
Large-signal differential voltage amplification
VOL
ICC+
ICC–
Low-level strobe current (see Note 7)
VID ≤ –10 mV
VO = 5 V to 35 V,
Istrobe = –3 mA,
RL = 1 kΩ
High-level (collector) output leakage current
Low-level (collector-to-emitter)
output voltage
IOL = 50 mA,
VID = –10 mV
VID = –10 mV,
VID = 10 mV,
Supply current from VCC+, output low
Supply current from VCC–, output low
VID = 5 mV,
–3
13
to
–14.5
13.8
to
–14.7
40
200
VOH = 35 V
nA
mA
V
V/mV
0.2
50
nA
0.75
1.5
V
No load
5.1
7.5
mA
No load
–4.1
–5
mA
† Unless otherwise noted, all characteristics are measured with BALANCE and BAL/STRB open and the emitter output grounded.
NOTES: 6. The offset voltages and offset currents given are the maximum values required to drive the collector output up to 14 V or down to
1 V with a pullup resistor of 7.5 kΩ to VCC+. These parameters actually define an error band and take into account the worst-case
effects of voltage gain and input impedance.
7. The strobe should not be shorted to ground; it should be current driven at –3 mA to –5 mA (see Figures 13 and 27).
switching characteristics, VCC± = ±15 V, TA = 25°C
PARAMETER
Response time, low-to-high-level output
Response time, high-to-low-level output
LM311Y
TEST CONDITIONS
RC = 500 Ω to 5 V,
V
CL = 5 pF,
pF
MIN
See Note 8
TYP
MAX
UNIT
115
ns
165
ns
NOTE 8: The response time specified is for a 100-mV input step with 5-mV overdrive and is the interval between the input step function and the
instant when the output crosses 1.4 V.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
5
LM111, LM211, LM311
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007C – SEPTEMBER 1973 – REVISED OCTOBER 2000
TYPICAL CHARACTERISTICS†
INPUT OFFSET CURRENT
vs
FREE-AIR TEMPERATURE
20
500
VCC± = ±15 V
VO = 1 V to 14 V
See Note A
18
450
16
14
LM111
LM211
LM311
12
10
Condition 1
Condition 2
8
6
LM311
4
0
–60 –40 –20
0
20
VCC± = ±15 V
VO = 1 V to 14 V
See Note A
LM311
400
350
300
250
LM111
LM211
Condition 2
200
150
LM311
Condition 1
100
LM111
LM211
2
I IB – Input Bias Current – nA
I IO – Input Offset Current – nA
INPUT BIAS CURRENT
vs
FREE-AIR TEMPERATURE
50
40
60
80 100 120 140
LM111
LM211
0
–60 –40 –20
TA – Free-Air Temperature – °C
NOTE A: Condition 1 is with BALANCE and BAL/STRB open.
Condition 2 is with BALANCE and BAL/STRB connected
to VCC+.
0
20
40
60
80 100 120 140
TA – Free-Air Temperature – °C
NOTE A: Condition 1 is with BALANCE and BAL/STRB open.
Condition 2 is with BALANCE and BAL/STRB connected
to VCC+.
Figure 1
Figure 2
† Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
6
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
LM111, LM211, LM311
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007C – SEPTEMBER 1973 – REVISED OCTOBER 2000
TYPICAL CHARACTERISTICS†
VI = 50 V (LM111, LM211)
40 V (LM311)
VCC+ = 30 V
1 kΩ
VOLTAGE TRANSFER CHARACTERISTICS
60
50
VCC+ = 30 V
VCC– = 0
TA = 25°C
Output
VID
LM111
LM211
VO – Output Voltage – V
VCC–
LM311
40
30
Emitter Output
RL = 600 Ω
COLLECTOR OUTPUT TRANSFER CHARACTERISTIC
TEST CIRCUIT FOR FIGURE 3
Collector
Output
RL = 1 kΩ
VCC+ = 30 V
20
VID
10
Output
600 Ω
0
–1
VCC–
–0.5
0
0.5
1
VID – Differential Input Voltage – mV
EMITTER OUTPUT TRANSFER CHARACTERISTIC
TEST CIRCUIT FOR FIGURE 3
Figure 3
† Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
7
LM111, LM211, LM311
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007C – SEPTEMBER 1973 – REVISED OCTOBER 2000
TYPICAL CHARACTERISTICS
Differential
Input Voltage
OUTPUT RESPONSE FOR
VARIOUS INPUT OVERDRIVES
100 mV
VCC± = ±15 V
RC = 500 Ω to 5 V
TA = 25°C
5
VO – Output Voltage – V
VO – Output Voltage – V
Differential
Input Voltage
OUTPUT RESPONSE FOR
VARIOUS INPUT OVERDRIVES
4
3
2
5 mV
2 mV
20 mV
1
0
0
50
100
150
200
250
300
100 mV
VCC± = ±15 V
RC = 500 Ω to 5 V
TA = 25°C
5
4
20 mV
3
2
0
350
0
50
100
150
200
t – Time – ns
t – Time – ns
Figure 5
Figure 4
VCC+ = 15 V
5V
500 Ω
VO
VID
VCC– = –15 V
TEST CIRCUIT FOR FIGURES 4 AND 5
8
2 mV
5 mV
1
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
250
300
350
LM111, LM211, LM311
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007C – SEPTEMBER 1973 – REVISED OCTOBER 2000
TYPICAL CHARACTERISTICS
100 mV
VCC± = ±15 V
RE = 2 kΩ to –15 V
TA = 25°C
10
5 mV
5
2 mV
0
–5
–10
–15
0
100 mV
VCC± = ±15 V
RE = 2 kΩ to –15 V
TA = 25°C
15
20 mV
VO – Output Voltage – V
VO – Output Voltage – V
15
OUTPUT RESPONSE FOR
VARIOUS INPUT OVERDRIVES
Differential
Input Voltage
Differential
Input Voltage
OUTPUT RESPONSE FOR
VARIOUS INPUT OVERDRIVES
0.2 0.4
0.6
0.8
1.0
1.2
1.4 1.6
5
2 mV
0
–5
20 mV
–10
–15
1.8
5 mV
10
0
0.2 0.4
t – Time – ns
0.6
0.8
1.0
1.2
1.4 1.6
1.8
t – Time – ns
Figure 6
Figure 7
VCC+ = 15 V
VID
VO
RE = 2 kΩ
VCC– = –15 V
TEST CIRCUIT FOR FIGURES 6 AND 7
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
9
LM111, LM211, LM311
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007C – SEPTEMBER 1973 – REVISED OCTOBER 2000
TYPICAL CHARACTERISTICS
OUTPUT CURRENT AND DISSIPATION
vs
OUTPUT VOLTAGE
120
700
600
PO (right scale)
100
500
80
400
60
300
40
200
IO (left scale)
20
100
0
0
5
I CC+ – Positive Supply Current – mA
140
6
800
VCC± = ±15 V
t ≤ 10 s
VID = –10 mV
TA = 25°C
PO – Output Dissipation – mW
I O – Output Current and Dissipation mA
160
POSITIVE SUPPLY CURRENT
vs
POSITIVE SUPPLY VOLTAGE
0
15
10
TA = 25°C
No Load
5
VID = –10 mV
4
3
VID = 10 mV
2
1
0
0
VO – Output Voltage – V
5
Figure 8
Figure 9
NEGATIVE SUPPLY CURRENT
vs
NEGATIVE SUPPLY VOLTAGE
I CC– – Negative Supply Current – mA
–6
VID = 10 mV or –10 mV
TA = 25°C
No Load
–5
–4
–3
–2
–1
0
0
–5
–10
VCC– – Negative Supply Voltage – V
Figure 10
10
10
VCC+ – Positive Supply Voltage – V
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
–15
15
LM111, LM211, LM311
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007C – SEPTEMBER 1973 – REVISED OCTOBER 2000
APPLICATION INFORMATION
Figure 11 through Figure 29 show various applications for the LM111, LM211, and LM311 comparators.
VCC+
3 kΩ
VCC+
20 kΩ
1 kΩ
Square Wave
Output
(fanout to two
Series 54 gates
or equivalent)
10 kΩ
1200 pF
20 kΩ
3 kΩ
BALANCE
BAL/
STRB
39 kΩ
Figure 12. Offset Balancing
Figure 11. 100-kHz Free-Running Multivibrator
VCC+
20 kΩ
BAL/STRB
Output
Input
TTL
Strobe
2N2222
1 kΩ
VCC–
Figure 13. Strobing
Figure 14. Zero-Crossing Detector
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
11
LM111, LM211, LM311
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007C – SEPTEMBER 1973 – REVISED OCTOBER 2000
APPLICATION INFORMATION
5V
1 kΩ
82 kΩ
240 kΩ
Input†
Output to TTL
‡
47 kΩ
82 kΩ
† Resistor values shown are for a 0-to-30-V logic swing and a 15-V threshold.
‡ May be added to control speed and reduce susceptibility to noise spikes.
Figure 15. TTL Interface With High-Level Logic
VCC+
100 kΩ
5V
4.5 kΩ
2 kΩ
100 kHz
10 pF
2 kΩ
Output
Output
to TTL
100 kΩ
1 kΩ
0.1 µF
50 kΩ
Magnetic
Transducer
Figure 16. Detector for Magnetic Transducer
12
POST OFFICE BOX 655303
Figure 17. 100-kHz Crystal Oscillator
• DALLAS, TEXAS 75265
LM111, LM211, LM311
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007C – SEPTEMBER 1973 – REVISED OCTOBER 2000
APPLICATION INFORMATION
From D/A Network
VCC+
VCC+
Output
Analog
Input†
22 kΩ
BALANCE
BAL/STRB
0.1 µF
Input
TIP30
TTL
Strobe
2N2222
Sample
1 kΩ
†Typical input current is 50 pA with inputs strobed off.
Figure 18. Comparator and Solenoid Driver
Figure 19. Strobing Both Input and Output Stages
Simultaneously
VCC+
VCC+ = 5 V
3 kΩ
500 Ω
3.9 kΩ
10 kΩ
3 kΩ
Output
2N3708
BALANCE
BAL/
STRB
Output
to MOS
Input
+
1 kΩ
1.5 µF
10 kΩ
2N2222
VCC– = –10 V
Figure 20. Low-Voltage Adjustable
Reference Supply
POST OFFICE BOX 655303
Figure 21. Zero-Crossing Detector
Driving MOS Logic
• DALLAS, TEXAS 75265
13
LM111, LM211, LM311
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007C – SEPTEMBER 1973 – REVISED OCTOBER 2000
APPLICATION INFORMATION
VCC+ = 5 V
3.9 kΩ
30 kن
1 kΩ
2N3708
1 kΩ
1N914
Output
+
2N2222
1N914
Input
From
TTL
2N2222
1.5 µF
2.7 kΩ
510 Ω
2N2222
2.2 kΩ
† Adjust to set clamp level
Figure 22. Precision Squarer
VCC+ = 5 V
5V
TIL102
From
TTL
Gate
5 kΩ
1 kΩ
TTL
Output
100 Ω
1 kΩ
50 kΩ
0.01 µF
1 kΩ
Figure 23. Digital Transmission Isolator
VCC+ = 15 V
2 kΩ
Input
TL081
–
Output
10 kΩ
+
+
1 MΩ
VCC– = –15 V
1.5 µF
Figure 24. Positive-Peak Detector
14
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
LM111, LM211, LM311
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007C – SEPTEMBER 1973 – REVISED OCTOBER 2000
APPLICATION INFORMATION
VCC+ = 15 V
1 MΩ
TL081
10 kΩ
2 kΩ
+
Input
Output
–
+
15 µF
VCC– = –15 V
Figure 25. Negative-Peak Detector
VCC+ = 5 V
3.9 kΩ
1N2175
2N3708
1 kΩ
Output
to TTL
2N2222
R1†
30 kΩ
† R1 sets the comparison level. At comparison, the photodiode has less than 5 mV across it, decreasing dark current by an order of magnitude.
Figure 26. Precision Photodiode Comparator
VCC+
Inputs
BAL/STRB
‡
VCC–
TTL
Strobe
2N3708
1 kΩ
‡ Transient voltage and inductive kickback protection
Figure 27. Relay Driver With Strobe
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
15
LM111, LM211, LM311
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007C – SEPTEMBER 1973 – REVISED OCTOBER 2000
APPLICATION INFORMATION
VCC+
620 Ω
BAL/STRB
300 Ω
TIP30
1
100 kΩ
100 kΩ
Output
BAL/STRB
2
10 kΩ
TIP29
Input
0.1 µF
300 Ω
47 Ω
620 Ω
VCC–
Figure 28. Switching Power Amplifier
39 kΩ
VCC+
620 Ω
300 kΩ
TIP30
620 Ω
BAL/STRB
1
TIP29
15 kΩ
Reference
VCC–
0.22 µF
620 Ω
Outputs
V+
510 Ω
15 kΩ
510 Ω
Input
620 Ω
BAL/STRB
2
TIP29
VCC–
39 kΩ
300 kΩ
620 Ω
620 Ω
Figure 29. Switching Power Amplifiers
16
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
TIP30
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