DISCLAIMER

INFORMATION

The information given in this document shall in no event be regarded as a guarantee of conditions or

characteristics. With respect to any examples given herein, any typical values stated herein and/or any

information regarding the application of the device, Knowles Electronics, LLC hereby disclaims any and

all warranties and liabilities of any kind, including without limitation warranties of non-infringement of

intellectual property rights of any third party.

For further information on technology, delivery terms and conditions

and prices, please contact a Knowles representative.

© 2019, Knowles Electronics, LLC, Itasca, IL USA. All Rights Reserved.

Knowles and the logo are trademarks of Knowles Electronics, LLC.

KAS-700-0145

Mics on Flex, 2 Pack, SPK0641HT4H-1,

RAMIS, Top Port PDM

Knowles robust SPK0641HT4H-1, high-performance

digital microphone mounted on flexable bias boards

ASSEMBLY OVERVIEW

Top Port PDM microphone mounted to flexible bias board.

For use with Knowles “Muskie” Microphone Evaluation Kit.

Part# KAS-33100-0004

64.5 dB Signal-to-Noise Ratio (SNR) in a small footprint, ideal for a

wide range of use cases in laptop, smartphones and mobile devices

±1 dB sensitivity matching improves audio algorithm performance

including beam forming and noise suppression.

KEY MICROPHONE

PARAMETERS

SPECIFICATIONS

Signal-to-noise ratio (SNR)

64.5 dB (A)

Acoustic Overload Point (10% AOP)

120 dB SPL

Low Frequency Roll Off (LFRO)

35 Hz

Current consumption

630uA

Sensitivity and Tolerance

-26 ± 1 dB FS

Supply voltage

1.6 to 3.6V

Interface

PDM Digital

Clock Rates Supported (Normal Mode)

1.0 to 4.8 MHz

Port location

Top Port

Package dimensions

4.00 x 3.00 x 1.10 mm

MICROPHONE DIMENSIONS (MM)

Item

Dimension

Tolerance

Length (L)

4.00

+/-0.10

Width (W)

3.00

+/-0.10

Height (H)

1.00

+/-0.10

Acoustic Port (AP)

+/-0.05

KAS-700-0045 MIC ON FLEX BOM

SPK0641HT4H-1, Top port digital microphone

BYPASS CAPACITOR, 0.1uF, 0.1 F ±10% 16V, X5R, 0402

KCB3436 FLEX CIRCUIT PCB

FLEX CIRCUIT DIMENSIONS

FLEX CIRCUIT PINOUTS

The table below shows the pinout for the flex connector. The

same connector can be used for all microphone flexes,

regardless of port orientation or electrical interface.

Flex

Pin#

Flex

Marking

Signal

1

G

Ground

2

P

Power

3

D

Data

4

K

Bit Clock

5

S

Select

6

G

Ground

ADDITIONAL INFORMATION

For inquiries, please visit the Knowles website at

https://www.knowles.com/subdepartment/evaluation-

kits/dpt-microphones/subdpt-sisonic-surface-mount-mems

Or contact your nearest Knowles representative.