Fairchild LM2903M, LM2903MX, LM2903N, LM293AN, LM393AM Schematics
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LM2903,LM393/LM393A,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, LM393/LM393A, LM293A consist of two independent voltage comparators designed to operate from a single power supply over a wide voltage range.
8-DIP
1
8-SOIC
1
Internal Block Diagram
OUTPUT1 |
1 |
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8 |
VCC |
IN1 (-) |
2 |
- |
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7 |
OUTPUT2 |
IN1 (+) |
3 |
+ |
- |
6 |
IN2 (-) |
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GND |
4 |
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+ |
5 |
IN2 (+) |
Rev. 2.0.2
©2012 Fairchild Semiconductor Corporation
LM2903,LM393/LM393A,LM293A
Schematic Diagram
VCC |
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Q9 |
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Q12 |
Q14 |
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D2 |
D3 |
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D4 |
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Q2 |
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Q3 |
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R2 |
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D1 |
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IN (+) |
Q1 |
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Q4 |
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OUTPUT |
IN (-) |
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Q8 |
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Q13 |
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Q7 |
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Q5 |
Q6 |
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D5 |
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R1 |
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D6 |
GND |
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Absolute Maximum Ratings
Parameter |
Symbol |
Value |
Unit |
Power Supply Voltage |
VCC |
18 or 36 |
V |
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Differential Input Voltage |
VI(DIFF) |
36 |
V |
Input Voltage |
VI |
-0.3 to +36 |
V |
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-SOIC |
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480 |
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Operating Temperature |
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LM393/LM393A |
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0 ~ +70 |
C |
LM2903 |
TOPR |
-40 ~ +105 |
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LM293A |
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-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. |
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C/W |
8-DIP |
R ja |
120 |
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8-SOIC |
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260 |
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2
LM2903,LM393/LM393A,LM293A
Electrical Characteristics
(VCC = 5V, TA = 25 C, unless otherwise specified)
Parameter |
Symbol |
Conditions |
LM293A/LM393A |
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LM393 |
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Unit |
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Min. |
Typ. |
Max. |
Min. |
Typ. |
Max. |
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Input Offset |
VIO |
VO(P) =1.4V, RS = 0 |
- |
1 |
2 |
- |
1 |
5 |
mV |
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Voltage |
VCM= 0 to 1.5V |
Note1 |
- |
- |
4.0 |
- |
- |
9.0 |
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Input Offset Current |
IIO |
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- |
5 |
50 |
- |
5 |
50 |
nA |
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Note1 |
- |
- |
150 |
- |
- |
150 |
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Input Bias Current |
IBIAS |
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- |
65 |
250 |
- |
65 |
250 |
nA |
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Note1 |
- |
- |
400 |
- |
- |
400 |
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Input Common |
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0 |
- |
VCC |
0 |
- |
VCC |
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Mode |
VI(R) |
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-1.5 |
-1.5 |
V |
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Voltage Range |
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Note1 |
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 15k |
50 |
200 |
- |
50 |
200 |
- |
V/mV |
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(for large VO(P-P)swing) |
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Large Signal |
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VI =TTL Logic Swing |
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TLRES |
VREF =1.4V, VRL = 5V, |
- |
350 |
- |
- |
350 |
- |
nS |
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Response Time |
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RL = 5.1k |
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Response Time |
TRES |
VRL =5V, RL =5.1k |
- |
1.4 |
- |
- |
1.4 |
- |
S |
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Output Sink Current |
ISINK |
VI(-) 1V, VI(+) =0V, |
6 |
18 |
- |
6 |
18 |
- |
mA |
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VO(P) 1.5V |
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Output Saturation |
VSAT |
VI(-) 1V, VI(+) = 0V |
- |
160 |
400 |
- |
160 |
400 |
mV |
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Voltage |
ISINK = 4mA |
Note1 |
- |
- |
700 |
- |
- |
700 |
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Output Leakage |
IO(LKG) |
VI(-) = 0V, |
VO(P) = 5V |
- |
0.1 |
- |
- |
0.1 |
- |
nA |
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Current |
VI(+) = 1V |
VO(P) = 30V |
- |
- |
1.0 |
- |
- |
1.0 |
A |
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Note1
LM393/LM393A: 0 TA +70 C
LM2903: -40 TA +105 C
LM293A : -25 TA +85 C
3
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