HD29026A/HD29027
Supply current vs. operating frequency
(HD29027)
150
T
a
= 25°C
V
CC
= 6 V
1 circuit operation
150
T
a
= 25°C
V
CC
= 6 V
2 circuit operation
Supply current (mA)
Supply current (mA)
100
100
C
L
= 1000 pF
C
L
= 1000 pF
500 pF
50
500 pF
250 pF
0 pF
50
250 pF
0 pF
0
0.1 0.2
0.5 1.0
2
5
10
Operating frequency (MHz)
0
0.1 0.2
0.5 1.0
2
5
10
Operating frequency (MHz)
Cautions (HD29026A only)
The short output rise and fall time, as well as the large output amplitude of this product tends to generate overshooting
and undershooting. The connection of 5 to 15
Ω
damping resistance (R
D
) to the output as illustrated in figure 2 serves
to increase the output rise and fall time, making it possible to reduce the chance of overshooting and undershooting.
Figure 3 shows the characteristics that result for a damping resistance (R
D
) of 10
Ω.
V
CC
Input
R
D
Output
Pulse
Generator
Zout = 50
Ω
C
L
Note:
C
L
includes stray capacitance of probe and other tools
Figure 2
Rev.2.00, Jul.16.2004, page 9 of 11
RENESAS [ RENESAS TECHNOLOGY CORP ]
