LT1720 Linear Technology, LT1720 Datasheet - Page 17

• Manufacturer Part Number: LT1720
• Description: 4ns/ 150MHz Dual Comparator with Independent Input/Output Supplies
• Manufacturer: Linear Technology

APPLICATIONS
0.1 F
X
Y
51 *
51 *
R9
487 *
X
Y
Z
1V
0V
1V
0V
5V
0V
U
RESULT OF X AND NOT Y
1/4 LT1721
–
4.53k
1/4 LT1721
+
+
–
R8*
INFORMATION
U
U1A
U1B
DELAY DETECTOR
5V
X
Y
Z
Figure 12. 3ns Delay Detector with Logarithmic Pulse Stretcher
W
301 *
301 *
Figure 13. Output Pulse Due to Delay of Y Input Pulse
301 *
5V
R5
1.82k*
R7
261 *
5.6pF
C1
U
301 *
R6
1/4 LT1721
–
+
U1C
Z
* 1% METAL FILM RESISTOR
** 270pF 2 FOR REDUCED LEAD INDUCTANCE
V
IN
1N5711
OPTIONAL LOGARITHMIC PULSE STRETCHER (SEE TEXT)
V
C
CAPTURE
540pF
499 *
R1
C2
**
DELAY
1k*
R2
5V
+
–
475 *
R3
1 *
R4
30 *
LT1720/LT1721
V
OFF
1/4 LT1721
+
–
U1D
5V
1720/21 F12
0.33 F
17
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