AMC1304L05-Q1 Datasheet, PDF (31/39 Pages) Texas Instruments – High-Precision, Reinforced Isolated Delta-Sigma Modulators with LDO

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11 Layout
AMC1304L05-Q1, AMC1304L25-Q1, AMC1304M05-Q1, AMC1304M25-Q1
SBAS799 – FEBRUARY 2017
11.1 Layout Guidelines
A layout recommendation showing the critical placement of the decoupling capacitors (as close as possible to the
AMC1304-Q1) and placement of the other components required by the device is shown in Figure 59. For best
performance, place the shunt resistor close to the VINP and VINN inputs of the AMC1304-Q1 and keep the
layout of both connections symmetrical.
For the AMC1304Lx-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.
NC
1
AINP
AINN
16
DGND
NC
DVDD
0.1 µF 2.2 µF
SMD SMD
0603 0603
AGND
LEGEND
Top Layer:
Copper Pour and Traces
To Floating
Power
Supply
High-Side Area
Controller-Side Area
Via to Ground Plane
Via to Supply Plane
0.1 µF
SMD
0603
0.1 µF
SMD
0603
NC
LDOIN
VCAP
AGND
AMC1304Mxx-Q1
CLKIN
NC
DOUT
NC
DGND
To or From
MCU
(Filter)
Copyright © 2016, Texas Instruments Incorporated
Figure 59. Recommended Layout of the AMC1304Mx-Q1
Copyright © 2017, Texas Instruments Incorporated
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Product Folder Links: AMC1304L05-Q1 AMC1304L25-Q1 AMC1304M05-Q1 AMC1304M25-Q1