Dual Differential Comparator
www.fairchildsemi.com
LM2903,LM393/LM393A,LM293A
Dual Differential Comparator
Features
• Single Supply Operation: 2V to...
Description
www.fairchildsemi.com
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 800A 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
IN1 (-) 2 -
IN1 (+) 3 + GND 4
8 VCC 7 OUTPUT2
- 6 IN2 (-)
+ 5 IN2 (+)
©2012 Fairchild Semiconductor Corporation
Rev. 2.0.2
LM2903,LM393/LM393A,LM293A
Schematic Diagram
VCC
IN (+) IN (-)
GND
Q9
D2
Q2 D1
D3
D4 Q3
Q1
Q4
Q5
Q6
Q12
Q14
R2
Q8 Q13
Q7
R1
OUTPUT D5 D6
Absolute Maximum Ratings
Parameter
Power Supply Voltage
Differential Input Voltage
Input Voltage
Output Short Circuit to GND
Power Dissipation, Ta = 25C 8-DIP 8-SOIC
Operating Temperature LM393/LM393A LM2903 LM293A
Storage Temperature
Symbol VCC
VI(DIFF) VI -
PD
TOPR TSTG
Thermal Data
Parameter Thermal Resistance Junction-Ambient Max. 8-DIP 8-SOIC
Symbol Rja
Value 18 or 36
36 -0.3 to +36 Continuous
1040 480
0 ~ +70 -40 ~ +105 -25 ~ +85 -65 ~ +150
Value
120 260
Unit V V V -
mW
C C
Unit C/W
2
LM2903,LM393/LM393A,LM293A
Electrical Characteristics
(VCC = 5V, TA = 25C, unless otherwise specified)
P...
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