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KM4211 Datasheet(PDF) 7 Page - Fairchild Semiconductor

Part No. KM4211
Description  Dual, 0.2mA, Low Cost, 2.7V & 5V, 35MHz Rail-to-Rail Amp
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

KM4211 Datasheet(HTML) 7 Page - Fairchild Semiconductor

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REV. 1 June 2001
7
Figure 4: Typical Topology for driving
a capacitive load
Layout Considerations
General layout and supply bypassing play major
roles in high frequency performance. Fairchild has
evaluation boards to use as a guide for high frequency
layout and to aid in device testing and characterization.
Follow the steps below as a basis for high frequency
layout:
I
Include 6.8
µF and 0.01µF ceramic capacitors
I
Place the 6.8
µF capacitor within 0.75 inches
of the power pin
I
Place the 0.01
µF capacitor within 0.1 inches
of the power pin
I
Remove the ground plane under and around the
part, especially near the input and output pins to
reduce parasitic capacitance
I
Minimize all trace lengths to reduce
series inductances
Refer to the evaluation board layouts shown in Figure 6
for more information.
When evaluating only one channel, complete the
following on the unused channel
1. Ground the non-inverting input
2. Short the output to the inverting input
Evaluation Board Information
The following evaluation boards are available to aid
in the testing and layout of this device:
Evaluation board schematics and layouts are shown in
Figure 5 and Figure 6.
The KEB006 evaluation board is built for dual supply
operation. Follow these steps to use the board in a
single supply application:
1. Short -Vs to ground
2. Use C3 and C4, if the -Vs pin of the KM4111
or KM4121 is not directly connected to the
ground plane.
Figure 5: Evaluation Board Schematic
Eval Board
Description
Products
KEB006
Dual Channel,
KM4211IC8
Dual Supply 8 lead SOIC
KEB010
Dual Channel,
KM4211IM8
Dual Supply 8 lead MSOP
+
-
Rf
Rg
Rs
CL
RL
KM4211
DATA SHEET


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