el5420t Intersil Corporation, el5420t Datasheet - Page 14

• Manufacturer Part Number: el5420t
• Description: 12mhz Rail-to-rail Input-output Operational Amplifier
• Manufacturer: Intersil Corporation

Power Supply Bypassing and Printed Circuit
Board Layout
The EL5420T can provide gain at high frequency, so good
printed circuit board layout is necessary for optimum
performance. Ground plane construction is highly
recommended, trace lengths should be as short as possible
and the power supply pins must be well bypassed to reduce
any risk of oscillation.
For normal single supply operation (the V
to ground) a 4.7µF capacitor should be placed from V
ground, then a parallel 0.1µF capacitor should be connected
Revision History
9/25/09
DATE
14
REVISION
FN6838.0
S
- pin is connected
Initial Release
S
+ to
EL5420T
as close to the amplifier as possible. One 4.7µF capacitor
may be used for multiple devices. For dual supply operation
the same capacitor combination should be placed at each
supply pin to ground.
For the QFN package, with exposed thermal pad, the pad
should be connected to the lowest potential, V
thermal and operating performance. PCB vias should be
placed below the device’s exposed thermal pad to transfer
heat to the V
S
- plane and away from the device.
CHANGE
S
September 25, 2009
-, to optimize
FN6838.0