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| page date 1 of 4 06/2008 PART NUMBER: CMR-2747PB-A DESCRIPTION: electret condenser microphone SPECIFICATIONS directivity sensitivity (S) sensitivity reduction (S-Vs) operating voltage output impedance (Zout) operating frequency (f) current consumption (IDSS) signal to noise ratio (S/N) operating temperature storage temperature dimensions weight material terminal RoHS note: noise-canceling -47 3 db f = 1KHz, 1Pa 0dB = 1V/Pa -3 dB f = 1KHz, 1Pa Vs = 2 ~ 1.5 V dc 2 V dc (standard), 10 V dc (max.) 2.2 K f = 1KHz, 1Pa 100 ~ 20,000 Hz 0.5 mA max. Vs = 2 V dc RL = 2.2K 56 dBA f = 1KHz, 1Pa A-weighted -20 ~ +70 C -20 ~ +70 C o6 x 2.7 mm 0.30 g max. Al pin type (hand soldering only) yes We use the "Pascal (Pa)" indication of sensitivity as per the recomendation of I.E.C. (International Electrotechnical Commission). The sensitivity 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 2.7 0.2 2.8 0.5 (2 PLCS) terminal 2 1.0 0.2 (2 PLCS) 6.0 0.2 0.45 0.05 (2 PLCS) 1.9 0.2 terminal 1 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 page date 2 of 4 06/2008 PART NUMBER: CMR-2747PB-A DESCRIPTION: electret condenser microphone MEASUREMENT CIRCUIT FREQUENCY RESPONSE CURVE 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 page date 3 of 4 06/2008 PART NUMBER: CMR-2747PB-A DESCRIPTION: electret condenser microphone MECHANICAL CHARACTERISTICS item soldering heat resistance PCB wire pull strength test condition evaluation standard Soldering iron of 270 5C should be placed on No interference in operation. the terminal for 2 0.5 seconds. The pull force will be applied to double lead wire: No damage or cutting off. Horizontal 4.9N (0.5kg) for 30 seconds The part will be measured after applying a vibration amplitude of 1.5 mm with 10 to 55 Hz band of vibration frequency to each of the After any tests, the sensitivity 3 perpendicular directions for 2 hours. should be within 3dB compared The part will be dropped from a height of to the initial measurement. 1 m onto a 20 mm thick wooden board 3 times in 3 axes (X, Y, Z) for a total of 9 drops. vibration drop test ENVIRONMENT TEST item high temp. test low temp. test humidity test temp. cycle test test condition After being placed in a chamber at +70C for 72 hours. After being placed in a chamber at -20C for 72 hours. After being placed in a chamber at +40C and 905% relative humidity for 240 hours. The 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 within 3dB compared to the initial measurement. TEST CONDITIONS standard test condition judgement test condition a) temperature: +5 ~ +35C a) temperature: +25 2C b) humidity: 45 - 85% b) humidity: 60 - 70% c) pressure: 860-1060 mbar c) pressure: 860-1060 mbar 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 page date 4 of 4 06/2008 PART NUMBER: CMR-2747PB-A DESCRIPTION: electret condenser microphone PACKAGING 20050 SW 112th Ave. Tualatin, Oregon 97062 phone 503.612.2300 fax 503.612.2383 |
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