AD2437 datasheet(40/42 Pages) AD

40 / 42 page

Rev. 0

Page 40 of 42

July 2023

AD2437

DESIGNER REFERENCE

Contact your local Analog Devices representative for the latest

schematic circuit recommendations and bill of materials for

node configurations. The recommended circuit and component

selection must be followed to ensure interoperability between

AD2437 systems.

PCB LAYOUT

The transceivers are highly integrated devices, comprising both

digital sections for audio data, clocks, PLL, and analog A2B

transceiver sections. PCB layout plays an important role in

ensuring system performance. For detailed layout guidelines,

see the A2B System Specification.

RECOMMENDED PCB FOOTPRINT

Figure 42 shows the transceiver footprint. Solder the exposed

paddle underneath the transceiver effectively to the PCB where

it is locally connected to the ground plane.

See “Soldering Considerations for Exposed-Pad Packages (EE-

352)”, on the Analog Devices web site. The exposed paddle is

used for a thermal pathway as well as for electrical connection.

Figure 42. Transceiver Footprint

Thermal Vias

0.3 mm drill

0.635 mm

Pads preferably tented/plugged

and no relief to plane layers

EPAD 4.2 mm × 4.2 mm

Pad 0.3 mm × 0.8 mm

0.5 mm

Pad Pitch

7.0 mm

7.7 mm

0.889 mm

0.322 mm

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