AMC1305L25-Q1 Datasheet, PDF (30/38 Pages) Texas Instruments – High-Precision, Reinforced Isolated Delta-Sigma Modulators

AMC1305L25-Q1, AMC1305M05-Q1, AMC1305M25-Q1
SBAS797 – FEBRUARY 2017
11 Layout
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11.1 Layout Guidelines
A layout recommendation showing the critical placement of the decoupling capacitors (as close as possible to the
AMC1305-Q1) and placement of the other components required by the device is shown in Figure 59.
For the AMC1305L25-Q1 version, place the 100-Ω termination resistor as close as possible to the CLKIN,
CLKIN_N inputs of the device to achieve highest signal integrity. If not integrated, an additional termination
resistor is required as close as possible to the LVDS data inputs of the MCU or filter device; see Figure 60.
11.2 Layout Examples
Top View
Clearance area
to be kept free of any
conductive materials
From shunt
resistor
LEGEND
TOP layer:
copper pour & traces
high-side area
controller-side area
via to ground plane
via to supply plane
NC
1
AINP
AINN
16
DGND
NC
DVDD
0.1 µF
SMD
0603
AGND
NC
AMC1305Mxx-Q1
CLKIN
NC
NC
DOUT
0.1 µF
SMD
0603
AVDD
AGND
NC
DGND
to/from
MCU
(filter)
Copyright © 2016, Texas Instruments Incorporated
Figure 59. Recommended Layout of the AMC1305Mx-Q1
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