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