TI LM111

LM111, LM211, LM311, LM311Y
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007A – SEPTEMBER 1973 – REVISED FEBRUARY 1992
D
D
D
D
D
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
LM111 . . . J PACKAGE
(TOP VIEW)
NC
EMIT OUT
IN +
IN –
NC
VCC –
BALANCE
1
14
2
13
3
12
4
11
5
10
6
9
7
8
NC
NC
NC
VCC +
NC
COL OUT
BAL/STRB
description
The LM111 is characterized for operation over the
full military range of – 55°C to 125°C. The LM211
is characterized for operation from – 40°C to
85°C, and the LM311 is characterized for
operation from 0°C to 70°C.
LM111 . . . JG PACKAGE
LM211, LM311 . . . D, DB, P, OR PW PACKAGE
(TOP VIEW)
EMIT OUT
IN +
IN –
VCC –
EMIT OUT
IN +
IN –
NC
VCC –
–
COL OUT
EMIT OUT
3
6
4
5
VCC +
COL OUT
BAL/STRB
BALANCE
•2 1
10
3
8
4
7
5
6
VCC +
COL OUT
NC
BAL/STRB
BALANCE
9
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
COL OUT
NC
BAL/STRB
NC
NC
VCC –
NC
BALANCE
NC
IN–
+
7
LM111 . . . FK PACKAGE
(TOP VIEW)
BALANCE
IN+
8
2
LM111 . . . U PACKAGE
(TOP VIEW)
functional block diagram
BAL/STRB
1
NC
EMIT OUT
NC
VCC +
NC
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 will be in the off state regardless of the
differential input.
Copyright  1992, 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.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
1
LM111, LM211, LM311, LM311Y
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007A – SEPTEMBER 1973 – REVISED FEBRUARY 1992
AVAILABLE OPTIONS
PACKAGED DEVICES
TA
VIOmax
at 25°C
SMALL
OUTLINE
(D)†
SSOP
(DB)
0°C
to
70°C
7.5 mV
LM311D
LM311DBLE
3 mV
LM211D
– 40°C
to
85°C
CHIP
CERAMIC
CARRIER
DIP
(FK)
(J)
CERAMIC
DIP
(JG)
PLASTIC
DIP
(P)
TSSOP
(PW)
LM311P
LM311PWLE
FLATPACK
(U)
CHIP
FORM
(Y)
LM311Y
LM211P
– 55°C
to
3 mV
LM111FK
LM111J
LM111JG
LM111U
125°C
† The D package is available taped and reeled. Add the suffix R (e.g., LM311DR). The DB and PW packages are only available left-end taped and
reeled.
schematic
BAL/STRB
300 Ω
BALANCE
300 Ω
VCC +
1.3
kΩ
750 Ω
1.3
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
200 Ω
2 kΩ
4Ω
EMIT OUT
VCC –
Component Count
All resistor values shown are nominal.
2
Resistors
Diodes
Epifet
Transistors
POST OFFICE BOX 655303
20
2
1
22
• DALLAS, TEXAS 75265
LM111, LM211, LM311, LM311Y
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007A – SEPTEMBER 1973 – REVISED FEBRUARY 1992
LM311Y chip information
This chip, when properly assembled, displays characteristics similar to the LM311. Thermal compression or
ultrasonic bonding may be used on the doped-aluminum bonding pads. Chips may be mounted with conductive
epoxy or a gold-silicon preform.
BONDING PAD ASSIGNMENTS
(1)
(8)
VCC+
(8)
(5)
BALANCE
(7)
IN+
IN–
(2)
BAL/STRB
COL
OUT
(7)
(2)
+
(3)
–
(6)
62
(4)
(1)
VCC – EMIT
OUT
(3)
CHIP THICKNESS: 15 TYPICAL
BONDING PADS: 4 × 4 MINIMUM
(4)
(5)
(6)
TJ max = 150°C
TOLERANCES ARE ± 10%.
50
ALL DIMENSIONS ARE IN MILS.
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
3
LM111, LM211, LM311, LM311Y
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007A – SEPTEMBER 1973 – REVISED FEBRUARY 1992
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)†
Supply voltage, VCC+ (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 V
Supply voltage, VCC– (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 18 V
Supply voltage, 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
LM311 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V
Duration of output short circuit (see Note 4) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 s
Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating free-air temperature range, TA: LM111 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 55°C to 125°C
LM211 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 40°C to 85°C
LM311 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0°C to 70°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 65°C to 150°C
Case temperature for 60 seconds: FK package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds: J, JG, or U package . . . . . . . . . . . . . 300°C
Lead temperature 1,6 mm (1/16 inch) from case for 60 seconds: D, DB, P, or PW package . . . . . . . . 260°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.
DISSIPATION RATING TABLE
PACKAGE
TA ≤ 25°C
POWER RATING
DERATING
FACTOR
DERATE
ABOVE TA
64°C
TA = 70°C
POWER RATING
TA = 85°C
POWER RATING
TA = 125°C
POWER RATING
D
500 mW
5.8 mW/°C
464 mW
377 mW
–
DB or PW
500 mW
4.2 mW/°C
31°C
336 mW
–
–
FK
500 mW
11.0 mW/°C
105°C
500 mW
500 mW
275 mW
J
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
P
500 mW
8.0 mW/°C
88°C
500 mW
500 mW
–
U
500 mW
5.4 mW/°C
57°C
432 mW
351 mW
135 mW
recommended operating conditions
Supply voltage, VCC + – VCC –
Input voltage ( | VCC± | ≤ 15 V)
4
MAX
3.5
30
VCC– + 0.5
– 55
LM111
Operating free-air temperature range, TA
MIN
VCC+ –1.5
125
LM211
– 40
85
LM311
0
70
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
UNIT
V
V
°C
LM111, LM211, LM311, LM311Y
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007A – SEPTEMBER 1973 – REVISED FEBRUARY 1992
electrical characteristics at specified free-air temperature, VCC ± = ± 15 V (unless otherwise noted)
PARAMETER
Input offset voltage
See Note 5
IIO
Input offset current
See Note 5
IIB
Input bias current
VO = 1 V to 14 V
IIL(S)
Low-level strobe
current (see Note 6)
V(strobe) = 0.3 V,
VICR
Common-mode
input voltage range
AVD
Large-signal
differential voltage
amplification
IOH
High-level
Hi
hl
l ((collector)
ll t )
output
out
ut current
VOL
25°C
4
3
25°C
I(strobe) = –3 mA,
VID = 5 mV,
75
10
6
100
100
–3
13.8
to
– 14.7
40
200
40
200
VCC+ = 4.5 V,
VCC
0,
CC– = 0
IOL = 8 mA
VID = – 6 mV
Full range
VID = – 10 mV
Full range
mV
nA
nA
mA
V
V/mV
10
nA
µA
0.2
50
0.75
1.5
nA
1.5
25°C
0.23
UNIT
0.5
25°C
0.75
250
300
13
to
– 14.5
0.2
50
70
13.8
to
– 14.7
Full range
25°C
7.5
13
to
– 14.5
25°C
VID = – 5 mV
VID = – 10 mV
2
10
–3
25°C
VOH = 35 V
VOH = 35 V
MAX
150
25°C
RL = 1 kΩ
LM311
TYP‡
20
Full range
VID ≤ – 10 mV
MIN
4
Full range
VO = 5 V to 35 V,
IOL = 50 mA
0.7
Full range
Full range
VID = 5 mV,
LM111, LM211
TYP‡ MAX
MIN
25°C
VIO
Low-level
(collector-to-emitter)
out
ut voltage
output
TA†
TEST CONDITIONS
V
0.4
0.23
0.4
ICC +
Supply current from
VCC +, output low
VID = – 10 mV,
No load
25°C
5.1
6
5.1
7.5
mA
ICC –
Supply current from
VCC –, output high
VID = 10 mV,
No load
25°C
– 4.1
–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, and for LM311 is 0°C to 70°C.
‡ All typical values are at TA = 25°C.
NOTES: 5. 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.
6. 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
LM111, LM211, LM311
TEST CONDITIONS
RC = 500 Ω to 5 V
V,
CL = 5 pF,
pF
MIN
See Note 7
TYP
MAX
UNIT
115
ns
165
ns
NOTE 7: 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, LM311Y
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007A – SEPTEMBER 1973 – REVISED FEBRUARY 1992
electrical characteristics at VCC ± = ± 15 V (unless otherwise noted)
LM311Y
TEST CONDITIONS†
PARAMETER
MIN
TYP
MAX
UNIT
VIO
IIO
Input offset voltage
See Note 5
2
7.5
mV
Input offset current
See Note 5
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
Low-level strobe current (see Note 6)
VID ≤ – 10 mV
VO = 5 V to 35 V,
Istrobe = – 3 mA,
RL = 1 kΩ
High-level (collector) output current
Low-level (collector-to-emitter) output
voltage
IOL = 50 mA,
VID = – 10 mV
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
ICC + Supply current from VCC +, output low
VID = – 10 mV,
No load
5.1
7.5
mA
ICC – Supply current from VCC –, output low
VID = 10 mV,
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: 5. 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.
6. 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 7
TYP
MAX
UNIT
115
ns
165
ns
NOTE 7: 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.
6
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
LM111, LM211, LM311, LM311Y
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007A – SEPTEMBER 1973 – REVISED FEBRUARY 1992
TYPICAL CHARACTERISTICS†
INPUT OFFSET CURRENT
vs
FREE-AIR TEMPERATURE
20
500
VCC± = ±15 V
VO = 1 V to 14 V
See Note A
18
VCC± = ±15 V
VO = 1 V to 14 V
See Note A
LM311
450
400
16
14
LM111
LM211†
I IB – Input Bias Current – nA
I IO – Input Offset Current – nA
INPUT BIAS CURRENT
vs
FREE-AIR TEMPERATURE
LM311
12
10
Condition 1
Condition 2
8
6
LM311
4
LM111
LM211†
2
0
– 60 – 40 – 20
0
20
350
300
250
60
150
LM311
Condition 1
100
LM111
LM211†
0
– 60 – 40 – 20
80 100 120 140
Condition 2
200
50
40
LM111
LM211†
0
20
40
60
80 100 120 140
TA – Free-Air Temperature – °C
TA – Free-Air Temperature – °C
Figure 2
Figure 1
NOTE A: Condition 1 is with BALANCE and BAL/STRB open. Condition 2 is with BALANCE and BAL/STRB connected to VCC +.
VCC+ = 30 V
VOLTAGE TRANSFER CHARACTERISTICS
60
VO – Output Voltage – V
50
VCC+ = 30 V
VCC – = 0
TA = 25°C
1 kΩ
LM111
LM211
Output
VID
LM311
VCC–
40
30
COLLECTOR OUTPUT TRANSFER CHARACTERISTIC
TEST CIRCUIT FOR FIGURE 3
Collector
Output
RL = 1 kΩ
Emitter Output
RL = 600 Ω
VI = 50 V (LM111, LM211)
40 V (LM311)
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, LM311Y
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007A – SEPTEMBER 1973 – REVISED FEBRUARY 1992
TYPICAL CHARACTERISTICS
100 mV
VCC± = ±15 V
RC = 500 Ω to 5 V
TA = 25°C
5
4
3
2
5 mV
2 mV
20 mV
1
0
0
50
100
150
200
250
Differential
Input Voltage
OUTPUT RESPONSE FOR
VARIOUS INPUT OVERDRIVES
VO – Output Voltage – V
VO – Output Voltage – V
Differential
Input Voltage
OUTPUT RESPONSE FOR
VARIOUS INPUT OVERDRIVES
300
350
100 mV
VCC± = ±15 V
RC = 500 Ω to 5 V
TA = 25°C
5
4
20 mV
3
2
0
0
t – Time – ns
50
100
150
200
t – Time – ns
Figure 4
Figure 5
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, LM311Y
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007A – SEPTEMBER 1973 – REVISED FEBRUARY 1992
TYPICAL CHARACTERISTICS
100 mV
VCC± = ±15 V
RE = 2 kΩ to –15 V
TA = 25°C
15
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
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
10
5
2 mV
0
–5
20 mV
– 10
– 15
1.8
5 mV
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
2 kΩ
VCC – = –15 V
TEST CIRCUIT FOR FIGURES 6 AND 7
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
9
LM111, LM211, LM311, LM311Y
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007A – SEPTEMBER 1973 – REVISED FEBRUARY 1992
TYPICAL CHARACTERISTICS
POSITIVE SUPPLY CURRENT
vs
POSITIVE SUPPLY VOLTAGE
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
TA = 25°C
No Load
5
VID = –10 mV
4
3
VID = 10 mV
2
1
0
0
15
10
I CC+ – Positive Supply Current – mA
I O – Output Current – mA
140
6
800
VCC± = ±15 V
t ≤ 10 s
VID = –10 mV
TA = 25°C
PO – Output Dissipation – mW
160
0
VO – Output Voltage – V
5
VCC+ – Positive Supply Voltage – V
Figure 9
Figure 8
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
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
– 15
15
LM111, LM211, LM311, LM311Y
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007A – SEPTEMBER 1973 – REVISED FEBRUARY 1992
APPLICATION INFORMATION
Figure 11 through Figure 29 show various applications for the LM111, LM211, and LM311 comparators.
VCC+
VCC+
20 kΩ
1 kΩ
3 kΩ
3 kΩ
Square Wave
Output
(fanout to two
Series 54 gates
or equivalent)
10 kΩ
1200 pF
20 kΩ
BAL/
BALANCE 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
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
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
11
LM111, LM211, LM311, LM311Y
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007A – SEPTEMBER 1973 – REVISED FEBRUARY 1992
APPLICATION INFORMATION
VCC+
100 kΩ
5V
2 kΩ
100 kHz
10 pF
2 kΩ
4.5 kΩ
Output
Output
to TTL
100 kΩ
0.1 µF
1 kΩ
50 kΩ
Magnetic
Transducer
Figure 16. Detector for Magnetic Transducer
Figure 17. 100-kHz Crystal Oscillator
From D/A Network
VCC+
VCC+
Output
22 kΩ
Analog
Input†
BALANCE
Input
BAL/STRB
0.1 µF
TIP30
TTL
Strobe
2N2222
Sample
1 kΩ
†Typical input current is 50 pA with inputs strobed off.
Figure 19. Strobing Both Input and
Output Stages Simultaneously
Figure 18. Comparator and Solenoid Driver
VCC+
3.9 kΩ
VCC + = 5 V
3 kΩ
500 Ω
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
12
POST OFFICE BOX 655303
Figure 21. Zero-Crossing
Detector Driving MOS Logic
• DALLAS, TEXAS 75265
LM111, LM211, LM311, LM311Y
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007A – SEPTEMBER 1973 – REVISED FEBRUARY 1992
APPLICATION INFORMATION
VCC+ = 5 V
3.9 kΩ
30 kن
1 kΩ
2N3708
1 kΩ
1N914
Output
+
2.7 kΩ
1N914
Input
From TTL
2N2222
1.5 µF
2N2222
510 Ω
2N2222
2.2 kΩ
† Adjust to set clamp level
Figure 22. Precision Squarer
VCC+ = 5 V
5V
TIL102
5 kΩ
1 kΩ
TTL Output
100 Ω
1 kΩ
From TTL Gate
50 kΩ
0.01 µF
1 kΩ
Figure 23. Digital Transmission Isolator
VCC + = 15 V
2 kΩ
Input
TL081
10 kΩ
–
Output
+
+
1.5 µF
1 MΩ
VCC – = –15 V
Figure 24. Positive-Peak Detector
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
13
LM111, LM211, LM311, LM311Y
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007A – SEPTEMBER 1973 – REVISED FEBRUARY 1992
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
R1†
30 kΩ
2N2222
† 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
14
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
LM111, LM211, LM311, LM311Y
DIFFERENTIAL COMPARATORS WITH STROBES
SLCS007A – SEPTEMBER 1973 – REVISED FEBRUARY 1992
APPLICATION INFORMATION
VCC +
300 Ω
BAL/STRB
620 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
TIP30
300 kΩ
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
620 Ω
TIP30
300 kΩ
620 Ω
Figure 29. Switching Power Amplifiers
POST OFFICE BOX 655303
• DALLAS, TEXAS 75265
15
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