Philips Semiconductors
Product specification
Low power dual voltage comparator
LM193/A/293/A/393/A/2903
EQUIVALENT CIRCUIT
+
V
700kΩ
100kΩ
30kΩ
500pF
–
+ VC
3.0kΩ
5.1kΩ
FREQUENCY
CONTROL
VOLTAGE
INPUT
LM393
+
–
10
OUTPUT 1
OUTPUT 2
LM393
+
0.1µF
20kΩ
–
V
/2
20kΩ
50kΩ
+
+
–
V
/2
LM393
NOTES:
V+ = 30V
+ 250m V
DC
DC
Two–Decade High–Frequency VCO
+
V (12V
)
DC
< V = 50V
DC
C
700H < f = 100kHz
O
2R
R
S
10KΩ
+
V
HI
REF
+
–
LAMP
S
+
V
IN
+
2N2222
+
2R
5V
S
DC
360
–
Limit Comparator
+
–
+
V
REF 4
100
+
V
100k
+
5V
DC
360
+
–
+
–
+
V
REF 3
100
100k
100k
+
V
5V
O
DC
TTL–to–MOS Logic Converter
360
+
V
+
–
+
V
REF 2
2.0kΩ
200kΩ
100kΩ
100
+
+
5V
V
DC
+
–
360
0.1µF
0
V
O
+
–
+
V
REF 1
100
CRYSTAL
I – 100kHz
200kΩ
100k
Visible Voltage Indicator
Crystal–Controlled Oscillator
NOTE:
Input of unused comparators should be grounded.
SL00081
Figure 3. Equivalent Circuit
5
1995 Nov 27
NXP [ NXP ]
