Response Time (Note 5) VRL = 5.0 Vdc, RL = 5.1 kΩ, TA = 25°C
Input Differential Voltage (Note 6)
All Vin
≥
Gnd or V– Supply (if used)
Output Sink Current
Vin
≥
1.0 Vdc, Vin+ = 0 Vdc, VO
≤
1.5 Vdc, TA = 25°C
Output Saturation Voltage
Vin
≥
1.0 Vdc, Vin+ = 0 Vdc, ISink
≤
4.0 mA, TA = 25°C
Tlow
≤
TA
≤
Thigh
* Tlow = 0°C, Thigh = +70°C for LM393/393A
NOTES:
1. The maximum output current may be as high as 20 mA, independent of the magnitude of VCC, output short circuits to VCC can cause excessive
heating and eventual destruction.
2. At output switch point, VO 1.4 Vdc, RS = 0
Ω
with VCC from 5.0 Vdc to 30 Vdc, and over the full input common mode range (0 V to VCC = –1.5 V).
3. Due to the PNP transistor inputs, bias current will flow out of the inputs. This current is essentially constant, independent of the output state, there
fore, no loading changes will exist on the input lines.
4. Input common mode of either input should not be permitted to go more than 0.3 V negative of ground or minus supply. The upper limit of common
mode range is VCC –1.5 V.
5. Response time is specified with a 100 mV step and 5.0 mV of overdrive. With larger magnitudes of overdrive faster response times are obtainable.
6. The comparator will exhibit proper output state if one of the inputs becomes greater than VCC, the other input must remain within the common mode
range. The low input state must not be less than –0.3 V of ground or minus supply.
Symbol
S b l
VIO
Min
–
–
Typ
±1.0
–
±50
–
25
–
–
–
200
300
Max
±2.0
4.0
Unit
U i
mV
IIO
–
–
IIB
–
–
VICR
0
0
AVOL
–
50
–
nA
±50
±150
nA
250
400
V
VCC –1.5
VCC –2.0
–
–
V/mV
ns
tTLH
VID
ISink
VOL
–
–
6.0
1.3
–
16
–
VCC
–
µs
V
mA
mV
–
–
150
–
400
700
]
2
MOTOROLA ANALOG IC DEVICE DATA
LM393, LM393A, LM293, LM2903, LM2903V
ELECTRICAL CHARACTERISTICS
(VCC = 5.0 Vdc, Tlow
≤
TA
≤
Thigh,* unless otherwise noted.)
LM393A
Characteristic
Ch
i i
Output Leakage Current
Vin– = 0 V, Vin+
≥
1.0 Vdc, VO = 5.0 Vdc, TA= 25°C
Vin– = 0 V, Vin+
≥
1.0 Vdc, VO = 30 Vdc, Tlow
≤
TA
≤
Thigh
Supply Current
RL =
∞
Both Comparators, TA = 25°C
RL =
∞
Both Comparators, VCC = 30 V
Symbol
S b l
IOL
–
–
ICC
–
–
0.4
1.0
1.0
2.5
0.1
–
–
1.0
mA
Min
Typ
Max
Unit
U i
µA
ELECTRICAL CHARACTERISTICS
(VCC = 5.0 Vdc, Tlow
≤
TA
≤
Thigh, unless otherwise noted.)
LM392, LM393
Characteristic
Ch
i i
Input Offset Voltage (Note 2)
TA = 25°C
Tlow
≤
TA
≤
Thigh
Input Offset Current
TA = 25°C
Tlow
≤
TA
≤
Thigh
Input Bias Current (Note 3)
TA = 25°C
Tlow
≤
TA
≤
Thigh
Input Common Mode Voltage Range (Note 3)
TA = 25°C
Tlow
≤
TA
≤
Thigh
Voltage Gain
RL
≥
15 kΩ, VCC = 15 Vdc, TA = 25°C
Large Signal Response Time
Vin = TTL Logic Swing, Vref = 1.4 Vdc
VRL = 5.0 Vdc, RL = 5.1 kΩ, TA = 25°C
Response Time (Note 5)
VRL = 5.0 Vdc, RL = 5.1 kΩ, TA = 25°C
Input Differential Voltage (Note 6)
All Vin
≥
Gnd or V– Supply (if used)
Output Sink Current
Vin
≥
1.0 Vdc, Vin+ = 0 Vdc, VO
≤
1.5 Vdc TA = 25°C
Output Saturation Voltage
Vin
≥
1.0 Vdc, Vin+ = 0, ISink
≤
4.0 mA, TA = 25°C
Tlow
≤
TA
≤
Thigh
Output Leakage Current
Vin– = 0 V, Vin+
≥
1.0 Vdc, VO = 5.0 Vdc, TA = 25°C
Vin– = 0 V, Vin+
≥
1.0 Vdc, VO = 30 Vdc,
Tlow
≤
TA
≤
Thigh
Supply Current
RL =
∞
Both Comparators, TA = 25°C
RL =
∞
Both Comparators, VCC = 30 V
* Tlow = 0°C, Thigh = +70°C for LM393/393A
LM293 Tlow = –25°C, Thigh = +85°C
LM2903 Tlow = –40°C, Thigh = +105°C
LM2903V Tlow = –40°C, Thigh = +125°C
NOTES:
2. At output switch point, VO 1.4 Vdc, RS = 0
Ω
with VCC from 5.0 Vdc to 30 Vdc, and over the full input common mode range (0 V to VCC = –1.5 V).
3. Due to the PNP transistor inputs, bias current will flow out of the inputs. This current is essentially constant, independent of the output state, there
fore, no loading changes will exist on the input lines.
5. Response time is specified with a 100 mV step and 5.0 mV of overdrive. With larger magnitudes of overdrive faster response times are obtainable.
6. The comparator will exhibit proper output state if one of the inputs becomes greater than VCC, the other input must remain within the common mode
range. The low input state must not be less than –0.3 V of ground or minus supply.
LM2903, LM2903V
Min
–
–
–
–
–
–
0
0
25
–
Typ
±2.0
9.0
±5.0
±50
25
200
–
–
200
300
Max
±7.0
15
nA
±50
±200
nA
250
500
V
VCC –1.5
VCC –2.0
–
–
V/mV
ns
Unit
U i
mV
Symbol
S b l
VIO
Min
–
–
Typ
±1.0
–
±5.0
–
25
–
–
–
200
300
Max
±5.0
9.0
±50
±150
250
400
VCC –1.5
VCC –2.0
–
–
IIO
–
–
IIB
–
–
VICR
0
0
AVOL
–
50
–
tTLH
VID
ISink
VOL
–
–
6.0
1.3
–
16
–
VCC
–
–
–
6.0
1.5
–
16
–
VCC
–
µs
V
mA
mV
–
–
IOL
–
–
ICC
–
–
150
–
0.1
–
0.4
–
400
700
–
1000
1.0
2.5
–
–
–
–
–
–
–
200
0.1
–
0.4
–
400
700
nA
–
1000
mA
1.0
2.5
]
MOTOROLA ANALOG IC DEVICE DATA
3
LM393, LM393A, LM293, LM2903, LM2903V
LM293/393,A
Figure 1. Input Bias Current versus
Power Supply Voltage
80
IIB , INPUT BIAS CURRENT (nA)
IIB , INPUT BIAS CURRENT (nA)
70
60
TA = –55° C
50
TA = 0° C
40
30
20
10
0
0
5.0
10
15
20
25
30
VCC, SUPPLY VOLTAGE (Vdc)
35
40
TA = +25° C
TA = +125°C
TA = +70° C
80
70
60
50
40
30
20
10
0
0
5.0
10
15
20
25
VCC, SUPPLY VOLTAGE (Vdc)
30
35
40
TA = +85° C
TA = 0° C
TA = +25° C
TA = –40° C
LM2903
Figure 2. Input Bias Current versus
Power Supply Voltage
Figure 3. Output Saturation Voltage
versus Output Sink Current
10
VOL , SATURATION VOLTAGE (Vdc)
VOL , SATURATION VOLTAGE (Vdc)
Out of
Saturation
TA = +125°C
0.1
10
Figure 4. Output Saturation Voltage
versus Output Sink Current
Out of
Saturation
1.0
1.0
TA = +85° C
0.1
TA = +25° C
TA = +25° C
TA = –55° C
0.01
0.01
TA = –40° C
0.1
TA = 0° C
0.001
0.01
0.1
1.0
10
100
0.001
0.01
1.0
10
100
ISink, OUTPUT SINK CURRENT (mA)
ISink, OUTPUT SINK CURRENT (mA)
Figure 5. Power Supply Current versus
Power Supply Voltage
1.0
ICC , SUPPLY CURRENT (mA)
0.8
TA = 0° C
TA = +25° C
TA = +70° C
0.4
0.2
0
TA = +125°C
ICC , SUPPLY CURRENT (mA)
TA = –55° C
1.2
1.0
0.8
Figure 6. Power Supply Current versus
Power Supply Voltage
TA = –40° C
TA = 0° C
TA = +25° C
0.6
RL =
5.0
10
15
20
25
R
35
40
0.6
0.4
0
5.0
10
15
20
25
RL =
TA = +85° C
R
35
40
30
30
VCC, SUPPLY VOLTAGE (Vdc)
VCC, SUPPLY VOLTAGE (Vdc)
4
MOTOROLA ANALOG IC DEVICE DATA
LM393, LM393A, LM293, LM2903, LM2903V
APPLICATIONS INFORMATION
These dual comparators feature high gain, wide
bandwidth characteristics. This gives the device oscillation
tendencies if the outputs are capacitively coupled to the
inputs via stray capacitance. This oscillation manifests itself
during output transitions (VOL to VOH). To alleviate this
situation, input resistors < 10 kΩ should be used.
The addition of positive feedback (< 10 mV) is also
recommended. It is good design practice to ground all
unused pins.
Differential input voltages may be larger than supply
voltage without damaging the comparator’s inputs. Voltages
more negative than –0.3 V should not be used.
Figure 7. Zero Crossing Detector
(Single Supply)
+15 V
R4
220 k
6.8 k
R2
R5
220 k
Figure 8. Zero Crossing Detector
(Split Supply)
Vin(min)
Vin
R1
8.2 k
Vin
R1
D1
*
LM393
)
10 M
10 k
+VCC
Θ
10 k
VCC
VO
– VEE
∆Θ
Θ
15 k
R3
Vin
*
LM393
)
–VEE
D1 prevents input from going negative by more than 0.6 V.
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