SPU0414HR5H-SB datasheet(7/11 Pages) KNOWLES

Part #	SPU0414HR5H-SB

Description	Amplified "Ultra-Mini" SiSonicTM Microphone Specification With MaxRF Protection

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Manufacturer	KNOWLES [Knowles Electronics]

Direct Link	http://www.knowles.com

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7 / 11 page

SPU0414HR5H-SB

Sheet 7 of 11

Knowles Acoustics, a division of Knowles Electronics, LLC.

Release Level: Active

Revision: C

10. RECOMMENDED INTERFACE CIRCUIT

Ω

R2 = 2.44k

C1 (Set by customer)

R1 = 22k

OUTPUT

GROUND

POWER

GAIN

R3 (Set by customer)

Dotted

Section

Represents

SiSonic

TM

Microphone

DESIRED GAIN

GAIN PIN TERMINATION METHOD

Unity Gain (0dB)

Tie Gain Pin directly to Output Pin

20dB

Tie Gain Pin through C1 to Ground (R3=0)

Adjustable Gain

(0dB to 20dB)

Add R3 and C1. Use formulas below to calculate settings:

)

R

(

C

Frequency

Corner

Highpass

)

G

log(

)

dB

(

Gain

,

R

G

3

2

1

3

2

1

2

1

20

1











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