AMC131M01DFMR datasheet(72/81 Pages) TI

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Table 9-3. Recommended External Components

COMP

DESCRIPTION

PART NUMBER

MANUFACTURER

SIZE (EIA, L x W)

DVDD

C15

1 nF ± 10%, X7R, 50 V

12065C102KAT2A

AVX

1206, 3.2 mm x 1.6 mm

C16

1 µF ± 10%, X7R, 25 V

12063C105KAT2A

AVX

1206, 3.2 mm x 1.6 mm

DC/DC CONVERTER

C17

100 nF ± 10%, X7R, 50 V

C0603C104K5RACAUTO

Kemet

0603, 1.6 mm x 0.8 mm

1 nF ± 10%, X7R, 50 V

C0603C102K5RACTU

Kemet

0603, 1.6 mm x 0.8 mm

1 µF ± 10%, X7R, 25 V

CGA3E1X7R1E105K080AC

TDK

0603, 1.6 mm x 0.8 mm

F1, F2

Ferrite bead

74269244182

Wurth Elektronik

0402, 1.0 mm x 0.5 mm

HLDO

C24

100 nF ± 10%, X7R, 50 V

C0603C104K5RACAUTO

Kemet

0603, 1.6 mm x 0.8 mm

C10

1 nF ± 10%, X7R, 50 V

12065C102KAT2A

AVX

1206, 3.2 mm x 1.6 mm

C13

100 nF ± 5%, NP0, 50 V

C3216NP01H104J160AA

TDK

1206, 3.2 mm x 1.6 mm

C11

1 nF ± 10%, X7R, 50 V

12065C102KAT2A

AVX

1206, 3.2 mm x 1.6 mm

9.4 Layout

9.4.1 Layout Guidelines

Figure 9-9 illustrates 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.

For best EMI performance, do not dedicate a ground plane on the high-side, but connect the ground reference

for the high-side (HGND) using individual traces as illustrated in Figure 9-9.

Route digital traces away from all analog inputs and associated components to minimize interference.

Use C0G capacitors on the analog inputs. Use ceramic capacitors (for example, X7R grade) for the power-

supply decoupling capacitors. High-K capacitors (Y5V) are not recommended. Place the required capacitors as

close as possible to the device pins using short, direct traces. For optimum performance, use low-impedance

connections on the ground-side connections of the bypass capacitors.

When applying an external clock, make sure the clock is free of overshoot and glitches. A source-termination

resistor placed at the clock buffer often helps reduce overshoot. Glitches present on the clock input can lead to

noise within the conversion data.

AMC131M01

SBASA57 – SEPTEMBER 2023

www.ti.com

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