Fairchild LM2903, LM2903I, LM393, LM393A, LM293 service manual
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LM2903/LM2903I,LM393/LM393A,
LM293/LM293A
Dual Differential Comparator
Features
•Single Supply Operation: 2V to 36V
•Dual Supply Operation: ± 1V to ± 18V
•Allow Comparison of Voltages Near Ground Potential
•Low Current Drain 800 A Typ.
•Compatible with all Forms of Logic
•Low Input Bias Current 25nA Typ.
•Low Input Offset Current ± 5nA Typ.
•Low Offset Voltage ± 1mV Typ.
Description
The LM2903/LM2903I, LM393/LM393A, LM293/ LM293A consist of two independent voltage comparators designed to operate from a single power supply over a wide voltage range.
8-DIP
1
8-SOP
1
Internal Block Diagram
Rev. 1.0.3
©2001 Fairchild Semiconductor Corporation
LM2903/LM2903I,LM393/LM393A, LM293/LM293A
Schematic Diagram
Absolute Maximum Ratings
Parameter |
Symbol |
Value |
Unit |
|
Power Supply Voltage |
VCC |
± 18 or 36 |
V |
|
Differential Input Voltage |
VI(DIFF) |
36 |
V |
|
Input Voltage |
VI |
- 0.3 to +36 |
V |
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Output Short Circuit to GND |
- |
Continuous |
- |
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Power Dissipation, Ta = 25° C |
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8-DIP |
PD |
1040 |
mW |
|
8-SOP |
|
480 |
|
|
Operating Temperature |
|
|
|
|
LM393/LM393A |
|
0 ~ +70 |
|
|
LM2903 |
TOPR |
- 40 ~ +85 |
° C |
|
LM2903I |
-40 ~ +105 |
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LM293/LM293A |
|
-25 ~ +85 |
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Storage Temperature |
TSTG |
- 65 ~ +150 |
° C |
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Thermal Data
Parameter |
Symbol |
Value |
Unit |
Thermal Resistance Junction-Ambient Max. |
|
|
|
8-DIP |
Rθ ja |
120 |
° C/W |
8-SOP |
|
260 |
|
2
LM2903/LM2903I,LM393/LM393A, LM293/LM293A
Electrical Characteristics
(VCC = 5V, TA = 25° C, unless otherwise specified)
Parameter |
|
|
Symbol |
Conditions |
LM293A/LM393A |
LM293/LM393 |
Unit |
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Min. |
Typ. |
Max. |
Min. |
Typ. |
Max. |
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Input Offset |
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|
VIO |
VO(P) =1.4V, RS = 0Ω |
- |
± 1 |
± 2 |
- |
± 1 |
± 5 |
mV |
|
Voltage |
|
|
VCM= 0 to1.5V |
Note 1 |
- |
- |
± 4.0 |
- |
- |
± 9.0 |
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Input Offset |
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|
IIO |
|
|
- |
± 5 |
± 50 |
- |
± 5 |
± 50 |
nA |
Current |
|
|
|
Note 1 |
- |
- |
± 150 |
- |
- |
± 150 |
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Input Bias |
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IBIAS |
|
|
- |
65 |
250 |
- |
65 |
250 |
nA |
Current |
|
|
|
Note 1 |
- |
- |
400 |
- |
- |
400 |
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Input Common |
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|
0 |
- |
VCC |
0 |
- |
VCC |
|
|
Mode |
|
|
VI(R) |
|
|
-1.5 |
-1.5 |
V |
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Voltage Range |
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Note 1 |
0 |
- |
VCC-2 |
0 |
- |
VCC-2 |
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Supply Current |
|
ICC |
RL = ∞ , VCC = 5V |
- |
0.6 |
1 |
- |
0.6 |
1 |
mA |
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RL = ∞ , VCC = 30V |
- |
0.8 |
2.5 |
- |
0.8 |
2.5 |
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Voltage Gain |
|
GV |
VCC =15V, RL ≥ |
15KΩ |
50 |
200 |
- |
50 |
200 |
- |
V/mV |
|
|
(for large VO(P-P)swing) |
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Large Signal |
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VI =TTL Logic Swing |
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Response |
|
|
TLRES |
VREF =1.4V, VRL = 5V, |
- |
350 |
- |
- |
350 |
- |
nS |
|
Time |
|
|
|
RL = 5.1KΩ |
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|
|
Response |
|
|
TRES |
VRL =5V, RL =5.1KΩ |
- |
1.4 |
- |
- |
1.4 |
- |
µ S |
|
Time |
|
|
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Output Sink |
|
|
ISINK |
VI(-) ≥ 1V, VI(+) =0V, |
6 |
18 |
- |
6 |
18 |
- |
mA |
|
Current |
|
|
VO(P) ≤ 1.5V |
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Output |
|
|
|
VI(-) ≥ 1V, VI(+) = 0V |
- |
160 |
400 |
- |
160 |
400 |
|
|
Saturation |
|
|
VSAT |
|
|
|
|
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|
|
|
mV |
|
|
ISINK = 4mA |
Note 1 |
- |
- |
700 |
- |
- |
700 |
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Voltage |
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Output |
|
|
|
VI(-) = 0V, |
VO(P) = 5V |
- |
0.1 |
- |
- |
0.1 |
- |
nA |
Leakage |
|
|
IO(LKG) |
|
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|
VO(P) = 30V |
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Current |
|
|
|
VI(+) = 1V |
- |
- |
1.0 |
- |
- |
1.0 |
µ A |
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NOTE 1 |
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LM393/LM393A: 0 ≤ |
TA ≤ +70° C |
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LM2903: -40 ≤ |
TA ≤ |
+85° C |
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LM2903I: -40 ≤ |
TA ≤ |
+105° C |
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LM293/LM293A : -25 ≤ TA ≤ +85° C
3
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