knowles.com | DATASHEET SPH0644LM4H-1 Rev C

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MECHANICAL SPECIFICATIONS

Example Land Pattern

Example Solder Stencil Pattern

NOTES:

Pick Area only extends to 0.25 mm of any edge or hole unless otherwise specified.

Dimensions are in millimeters unless otherwise specified.

Tolerance is ±0.15mm unless otherwise specified.

Detailed information on AP size considerations can be found in the latest

Further optimizations based on application should be performed.

Item

Dimension

Tolerance

Length (L)

3.50

±0.10

Width (W)

2.65

±0.10

Height (H)

0.98

±0.10

Acoustic Port (AP)

Ø0.325

±0.05

PCB Thickness (T)

0.307

±0.05

Pin #

Pin Name

Type

Description

1

DATA

Digital O

PDM Output

2

SELECT

Non-Digital I

Lo/Hi (L/R) Select

Connect to Vdd or GND

3

GROUND

Power

Ground

4

CLOCK

Digital I

Clock Input

5

Vdd

Power

Power Supply. Pull low to turn

off and do not leave floating.

MULTIMODE DIGITAL BOTTOM PORT