EC5420AI-F datasheet(9/10 Pages) E-CMOS

9 / 10 page

EC5420A

High Slew Rate Rail-to-Rail

Quad Operational Amplifiers

E-CMOS Corp. (www.ecmos.com.tw)

Page 9 of 10

Revision 2008/12/25

Power Supply Bypassing and Printed Circuit Board Layout

With high phase margin, the EC5420A performs stable gain at high frequency. Like any high-frequency device, good

layout of the printed circuit board usually comes with optimum performance. Ground plane construction is highly

recommended, lead lengths should be as short as possible and the power supply pins must be well bypassed to

reduce the risk of oscillation. For normal single supply operation, where the VS- pin is connected to ground, a 0.1 µF

ceramic capacitor should be placed from VS+ pin to VS- pin as a bypassing capacitor. A 4.7µF tantalum capacitor should

then be connected in parallel, placed in the region of the amplifier. One 4.7µF capacitor may be used for multiple

devices. This same capacitor combination should be placed at each supply pin to ground if split supplies are to be

used.

Layout arragement

LEAD POSITION OVERLAY FOR TSSOP-14 ( millimeters )

EC5420AI-F Datasheet(PDF) 9 Page - E-CMOS Corporation