Additional Resources: Product Page 3D Model PCB Footprint date 01/17/2020 page 1 of 4 MODEL: CMA-4544PF-W DESCRIPTION: ELECTRET CONDENSER MICROPHONE SPECIFICATIONS parameter conditions/description min typ max units directivity omnidirectional sensitivity (S) f = 1 kHz, 1 Pa, 0 dB = 1 V/1 Pa -46 -44 -42 dB operating voltage 3 10 Vdc output impedance (Zout) f = 1 kHz, 1 Pa 2.2 K sensitivity reduction (S-Vs) f = 1 kHz, 1 Pa, Vs = 3.0 to 2.0 Vdc -3 dB frequency (f) 20 20,000 Hz current consumption (IDSS) Vs = 3.0 Vdc, RL = 2.2 K 0.5 mA signal to noise ratio (S/N) f = 1 kHz, 1 Pa, A-weighted 60 dBA operating temperature -20 70 C storage temperature -20 70 C dimension 9.7 x 4.5 mm weight 0.8 g material Al terminal pin type (hand soldering only) RoHS yes Note: 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) MECHANICAL DRAWING MEASUREMENT CIRCUIT unit: mm RL = 2.2 K Schematic Diagram cuidevices.com Additional Resources: Product Page 3D Model PCB Footprint CUI Devices MODEL: CMA-4544PF-W DESCRIPTION: ELECTRET CONDENSER MICROPHONE date 01/17/2020 page 2 of 4 FREQUENCY RESPONSE CURVE 1.000V/PA MECHANICAL CHARACTERISTICS item test condition evaluation standard Soldering iron of +270 5C should be placed on the soldering heat resistance No interference in operation. terminal for 2 0.5 seconds. terminal mechanical strength Apply to the terminal 4.9 N (0.5 kg) for 30 seconds No damage or cutting off. The part should be measured after a vibration amplitude of vibration test 1.5 mm with 10~55 Hz band of vibration frequency to each of the 3 perpendicular directions for 2 hours. After any tests, the sensitivity should be within 3 dB of the initial sensitivity. The part without packaging is subjected to 3 drops on each drop test axis from the height of 1 m onto a 20 mm thick wooden board. ENVIRONMENT TEST item test condition evaluation standard high temperature test After being placed in a chamber at +70C for 72 hours. low temperature test After being placed in a chamber at -20C for 72 hours. After being placed in a chamber at +40C and 90 5% RH thermal shock for 240 hours. The part will be subjected to 10 cycles. One cycle will consist of: After any tests and 6 hours of conditioning at +25C, the sensitivity should be within 3 dB of the initial sensitivity. temperature cycle test TEST CONDITIONS standard test conditions a) Temperature: +5 ~ +35C b) Humidity: 45 ~ 85% c) Pressure: 860 ~ 1060 mbar judgement test conditions a) Temperature: +25 2C b) Humidity: 60 ~ 70% c) Pressure: 860 ~ 1060 mbar cuidevices.com