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EL5146CS Datasheet(PDF) 19 Page - Renesas Technology Corp

Part # EL5146CS
Description  100MHz Single-Supply Rail-to-Rail Amplifiers
PDF  24 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

EL5146CS Datasheet(HTML) 19 Page - Renesas Technology Corp

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EL5144, EL5146, EL5244, EL5246, EL5444
FN7177 Rev 2.00
Page 19 of 24
March 31, 2011
Free Running Oscillator Application
Figure 54 is an EL5144 configured as a free running oscillator.
To first order, ROSC and COSC determine the frequency of
oscillation according to:
For rail to rail output swings, maximum frequency of oscillation
is around 15MHz. If reduced output swings are acceptable,
25MHz can be achieved. Figure 55 shows the oscillator for
ROSC = 510, COSC = 240pF and FOSC =6MHz.
FIGURE 52.
FIGURE 53.
FIGURE 54.
FIGURE 55.
FIGURE 56.
1
2
3
4
14
13
12
11
5
6
7
10
9
8
-
+
-
+
Sele
+5V
VOUT
150
VIN 1
3VPP
0.1µ
4.7µ
VIN 2
2.4VPP
EL5246
0V
5V
VOUT
Selec
0V
5V
1
2
3
5
4
+5V
470K
470K
0.1µ
470K
ROS
COS
5V
VOUT
0V
0V
5V
FOSC
0.72
ROSC COSC
---------------------------------------
=
(EQ. 4)



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