SPM0204UD5-2 데이터 시트보기 (PDF) - Unspecified

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SPM0204UD5-2

ULTRASONIC ACOUSTIC SENSOR

Unspecified 

SPM0204UD5

4. ACOUSTIC AND ELECTRICAL SPECIFICATIONS

Directivity

Frequency Range

Sensitivity

Output impedance

Current Consumption

Signal to Noise Ratio

Supply Voltage

Typical Input Referred

Noise

Sensitivity Loss across

Voltage

Maximum Input Sound

Level

Symbol

Condition

Omni-directional

Limits

Unit

Min. Nom. Max.

f

10k

65k

Hz

S

@ 1kHz (0dB=1V/Pa)

-51

-47

-43

dB

ZOUT

@ 1kHz (0dB=1V/Pa)

n/a

n/a

300

Ω

IDSS

across 1.5 to 3.6 volts

0.100 n/a 0.250

mA

S/N

@ 1kHz (0dB=1V/Pa)

55

59

n/a

dB

Vs

1.5

n/a

3.6

V

ENL

A-weighted

n/a

35

n/a dBA SPL

Change in sensitivity over 3.6v to No Change Across Voltage

1.5v

Range

dB

At 100dB SPL, THD < 1%

At 115dB SPL, THD = < 10%

dB

5. FREQUENCY RESPONSE CURVE

Knowles Acoustic MEMS Ultrasonic Sensor

Frequency Response

(Nominal Sensativity 0 = -47dBv/Pa)

30

20

10

0

-10

-20

-30

10,000

20,000

30,000

40,000

Frequency(Hz)

Knowles Acoustics,

a division of Knowles Electronics, LLC

50,000

60,000

Revision: PRELIMINARY

Page 3 of 9

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