Neumann Condensor Mic CMA-6542PF 电路图.pdf

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1、page date DESCRIPTION: electret condenser microphone 1 of 4 06/2008 20050 SW 112th Ave. Tualatin, Oregon 97062 phonephone 503.612.2300 faxfax 503.612.2383 PART NUMBER: CMA-6542PF SPECIFICATIONS directivityomnidirectional sensitivity (S)- 42 3 dbf = 1KHz, 1Pa 0dB = 1V/Pa sensitivity reduction (S- Vs)

2、- 3 dBf = 1KHz, 1Pa Vs = 4.5 1.5 V dc operating voltage4.5 V dc (standard), 10 V dc (max.) output impedance (Zout)2.2 Kf = 1KHz, 1Pa operating frequency (f)20 20,000 Hz current consumption (IDSS)0.5 mA max.Vs = 4.5 V dc RL = 2.2K signal to noise ratio (S/N)60 dBAf = 1KHz, 1Pa A- weighted operating t

3、emperature- 20 +70 C storage temperature - 20 +70 C dimensions9.7 x 6.5 mm weight0.70 g max. materialAl terminalpin type (hand soldering only) RoHSyes note:We use the “ Pascal (Pa)” indication of sensitivity as per the recomendation of I.E.C. (International Electrotechnical Commission). The sensitiv

4、ity of “ Pa” will increase 20dB compared to the “ ubar” indication. Example: - 60dB (0dB = 1V/ubar) = - 40dB (1V/Pa) APPEARANCE DRAWING tolerances not shown: 0.3mm 2.0 0.2 (2 PLCS) terminal 2 terminal 1 2.54 0.3 0.05 (2 PLCS) 6.5 0.2 0.29.7 0.4 5.0 1.0 (2 PLCS) RadioFans.CN 收音机爱 好者资料库 page date DESC

5、RIPTION: electret condenser microphone 2 of 4 06/2008 20050 SW 112th Ave. Tualatin, Oregon 97062 phonephone 503.612.2300 faxfax 503.612.2383 PART NUMBER: CMA-6542PF MEASUREMENT CIRCUIT FREQUENCY RESPONSE CURVE RadioFans.CN 收音机爱 好者资料库 page date DESCRIPTION: electret condenser microphone 3 of 4 06/200

6、8 20050 SW 112th Ave. Tualatin, Oregon 97062 phonephone 503.612.2300 faxfax 503.612.2383 PART NUMBER: CMA-6542PF ENVIRONMENT TEST itemtest condition high temp. testAfter being placed in a chamber at +70C for 72 hours. low temp. testAfter being placed in a chamber at - 20C for 72 hours. humidity test

7、After being placed in a chamber at +40C and 905% relative humidity for 240 hours. temp. cycle testThe part shall be subjected to 10 cycles. One cycle will consist of: evaluation standard The part will be measured after being placed at +25C for 6 hours. After any tests, the sensitivity should be with

8、in 3dB compared to the initial measurement. MECHANICAL CHARACTERISTICS itemtest condition soldering heat resistanceLead terminals are immersed in solder bath of 260 5C for 2 0.5 seconds. terminal mechanicalApply to the terminal 0.5kg for 1 minute strength vibrationThe part will be measured after app

9、lying a vibration amplitude of 1.5 mm with 10 to 55 Hz band of vibration frequency to each of the 3 perpendicular directions for 2 hours. drop testThe part will be dropped from a height of 1 m onto a 20 mm thick wooden board 3 times in 3 axes (X, Y, Z) for a total of 9 drops. evaluation standard No

10、interference in operation. No damage or cutting off. After any tests, the sensitivity should be within 3dB compared to the initial measurement. TEST CONDITIONS standard test conditiona) temperature: +5 +35Cb) humidity: 45 - 85%c) pressure: 860- 1060 mbar judgement test conditiona) temperature: +25 2Cb) humidity: 60 - 70%c) pressure: 860- 1060 mbar page date DESCRIPTION: electret condenser microphone 4 of 4 06/2008 20050 SW 112th Ave. Tualatin, Oregon 97062 phonephone 503.612.2300 faxfax 503.612.2383 PART NUMBER: CMA-6542PF PACKAGING