欢迎光临深圳市锐创达电子有限公司官网
24小时服务热线:075582370515
产品中心 > M9767
EM9767.JPG
  • EM9767.JPG
  • DSC_1493_exposure.JPG

M9767

零件应在一个条件下(温度:5~35℃,湿度:45%~85%R.H.,大气压:860~1060hPa)进行测量,除非调节标准条件(温度:25±3℃,湿度为60±10%R.H.大气压:860~1060hPa)来进行测量。

1.Scope

    The specifications should be applied to electret condenser microphone of DGOB4015DD(-P)C1033

2.Storage And Judgement Conditions


Temperature Range(°C)

Rel. Humidity(%)

Static Pressure(kPa)

Judgement

 19~21

 6070 

      86~106

Storage

-4080 



Operating

          -20~70



3.Specifications

    Test Conditions:VS=2.0V,RL=2.2KΩ,Temp=20±2°C, R.H=60±5%

ITEM

Symbol

Test Conditions

Min

Standard

Max

Unit

Sensitivity

  S

f=1KHz,

S.P.L=1Pa

-40

-38

-36

   dB

0dB=1V/Pa

Impedance

  Z

f=1KHz,

S.P.L=1μBar



2.2

Directivity

                  Omni-directional

Current  Consumption

  I


50


500

μA

Operation Voltage Range

  VS


1.0

4.5

10

V

S/N Ratio

 S/N(A)

f=1KHz,S.P.L=1Pa

A Curve

55



dB

Decreacing Voltage Characteristic

  △S

f=1KHz,S.P.L=1Pa

VS=1.5-1.0V



-3

dB

Max.Input Sound Level

 MISPL

f=1KHz,

Distortion≤3%



115

dB


4.Frequency Response

1(1).png

5.APPEARANCE & DIMENSIONS

2(1).png

6.Test Circuit

Measurement Circuit

Vs:Source Voltage 4.5V   RL:Load Resistance 2.2

  

  3(1).png

7.Test Setup Drawing

4(2).jpg

Vs=4.5V

RL=2.2kΩ


8.  Reliability Test

  

  All tests should be done after 2 hours of conditioning at 20,R.H65% ,while the sensitivity is to be within ±3dB from the initial sensitivity after the following experiments.  


8.1  High Temperature Test

      High temperature:                                      +60

        Duration:                                             72 hours

8.2   Low Temperature Test

      Low temperature:                                       -40

        Duration:                                             72 hours

8.3   Temperature Cycle Test (See in Fig.1)

      Low temperature:                                       -25          

        High temperature:                                       +60

        Changeover time:                                       10min

        Duration:                                               30min          

        Cycle:                                                  32

 

8.4   Statical Humidity Test

      Temperature:                                           +40 

        Relative humidity:                                       9095%

        Duration:                                               72hours     


8.5  Vibration Test

     Amplitude :                                             1.52mm

       Duration:                                               1minutes /plane

       Freq.range:                                              1055 Hz

       Total time:                                               2 hours

8.6   Dropping Test

       Drop a unit unpacked onto a board of 20mm thick.

  

        Height:                                                  1.0 m

        Cycle:                                                   6      

8.7   ESD Test

       The microphone under test must be discharged between each ESD exposure without ground.

          (contact:±6KV,air:±8KV)There is no interference in operation after 10 times exposure.

 9.   Regarding the Soldering operation

        a.  Use 15~ 20W soldering iron and maintain 290~310 in operation.

        b.  Operators who work in the solder fixture and the soldering iron must be statically grounded                    

            under each soldering process.

        C.  Soldering should be accomplished within two seconds at each terminal so as not to be overheated.

        d .  Optimal design for heat sink pad is same as below.

5(1).png


10. List and Structure of Materials

6(1).png

NO.

Part name

Material Type

Qty

Origin

Manufacture

Remarks

1

PCB

FR-1

1




2

Holder

ABS

1




3

FET

K596

1




4

Back plate

Cu

1




5

Spacer

Mylar

1




6

Film

FEP

1




7

Outer most shell

AL

1




8

Protection fleece

Fabrics

1




9

Capacitor

0603 10pF

1




1Assembly process

   a)After connector and holder are once disassembled , they should not be re-used.

   b)Do not touch outer springs directly(except for PCB or proper terminal set at nominal height.

   c)Do not give any mechanical shocks to the micphone(e.g. dropping to floor)

2General information

  2-1: This microphone shall not be operated or stored in following environment.

     >where liquid(water,solvent and so on)splashes.

     >where the air has a high concentration of corrosive gas .

     >where is too dusty.

     >where temperature changes rapidly.

  2-2: Frequency response especially in high frequency region is dependent on the structure of enclosure.

   Please remove additional acoustic mass or cavity in front of the microphone to the utmost.

  2-3:do not put mechanical pressure more than 2 kg to the microphone.

  2-4: microphone should not be in state of outgoing packing for a long-term storage.

  2-5: all the soldering procedures upon microphone must be complete in a metallic device,the temperature of the soldering irons must be limited as 320 and less 3 s ,the operatorsthe solder fixtures and the soldering irons must be statically grounded under each soldering process.


上一个: M9745P
下一个: 没有了