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| LMH6628EP Datasheet, PDF (13/16 Pages) National Semiconductor (TI) – Enhanced Plastic Dual Wideband, Low Noise, Voltage Feedback Op Amp | |||
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(6)
Select R2 and C using Eq. 6. Use reasonable values for high
frequency circuits - R2 between 10⦠and 5kâ¦, C between
10pF and 2000pF. Use Eq. 7 to determine the parallel com-
bination of Ra and Rb. Select Ra and Rb by either the 10⦠to
5k⦠criteria or by other requirements based on the impedance
Vin is capable of driving. Finish the design by determining the
value of K from Eq. 8.
(7)
Figure 8 shows an example of the response of the circuit of
Figure 9, where fo is 2.3MHz. The component values are as
follows: Ra=2.1kâ¦, Rb = 68.5â¦, R2 = 4.22kâ¦, R = 500â¦, KR
= 50â¦, C = 120pF.
FIGURE 8.
20088643
13
200886 Version 4 Revision 2 Print Date/Time: 2010/10/15 15:22:20
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