10 Layout

10.1 Layout Guidelines

Figure 10-1 shows a layout recommendation with the critical placement of the decoupling capacitors. The same

component reference designators are used as in the Power Supply Recommendations section. Decoupling

capacitors are placed as close as possible to the AMC3330 supply pins. For best performance, place the sense

resistor close to the INP and INN inputs of the AMC3330 and keep the layout of both connections symmetrical.

This layout is used on the AMC3330 EVM and supports CISPR-11 compliant electromagnetic radiation levels.

10.2 Layout Example

AMC3330

Clearance area, to be

kept free of any

conductive materials.

To MCU I/O (optional)

To ADC / MCU

To ADC / MCU

GND

INN

3.3-V or 5-V supply

VDD

OUTP

OUTN

DIAG

Top Metal

Inner or Bottom Layer Metal

Via

INP

Figure 10-1. Recommended Layout of the AMC3330

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AMC3330

SBASA34A – JUNE 2020 – REVISED OCTOBER 2020

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