GMI9745-2C32DB

規 格 承 認 書 PECIFICATION FOR APPROVAL 客 戶 CUSTOMER 項 目 ITEM 型 號 ： ： 全指向驻极体电容咪头（ECM） TYPE ： GMI9745-2C30-66DB 通用型（灵敏度-30~-66DB) 描述 DESCRIPTION ： φ9.7 x 4.5mm 焊点 1033 -30~-66dB ≤2.2KΩ 4.5V ≤0.5mA 客戶料號 CUSTOMER NO. ： 規 格 書 號 S/N: ≥58 dBA SPECIFICATION NO.： 版 本 EDITION NO. 日 期 DATE ： ： V1.0 20 客戶承認 CUSTOMER CONFIRM AND SIGN 檢查 審核 承認 TESTED BY CHECKED BY APPROVED BY 東莞市赢海電子有限公司 DONGUAN INGHAI ELECTRONICS CO.,LTD 製作 審查 確認 ISSUED BY CHECKED BY APPROVED BY 周明 刘承成 地址：广东省东莞市长安镇上沙第五工业区新春路 1 号新春科技园 電話 / TEL：0769-83060958 傳真 / FAX： 0769-81608993 網址：HTTP://WWW.INGHAI.COM 1/6 A. SCOPE This specification applies electret condenser microphone, GMI9745-2C30-66DB B. SPECIFICATION ■Test condition: RL=2.2KΩ VS=4.5V No. Item 1 Directivity 2 Sensitivity S dB -30~-66±3 3 Standard operating voltage Vs V 4.5 4 Output impedance Zout KΩ ≤2.2 5 Frequency Hz 100-10000 6 Max operating voltage V. 10 7 Sensitivity reduction △S-Vs dB -3 8 Max. current consumption IDSS mA ≤0.5 9 Signal to noise ration S/N dBA ≥58 S.P.L dB 115 10 Max. Sound Pressure Level Symbol TEMP=25℃±2℃ Unit Specification Related humidity=65±5% Condition Omnidirectional f=1KHz,1Pa 0dB=1V/ Pa f=1KHz, 1Pa f=1KHz, 1Pa vs=4.5VDC to 3.0VDC 11 Operation temp. ℃ -20 ~+60 12 Storage temp. ℃ -40 ~+70 13 Dimension mm φ9.7xH4.5 See appearance drawing 14 Terminal Terminal See appearance drawing 15 Approvals RoHs FCC We use “Pascal(Pa)”indication of sensitivity as per the recommendation of I.E.C.(International Electro technical Commission) TheSensitivity of “Pa” will increase 20dB comparing with “ubar” indication Example: -60dB(0dB=1V/ubar) =-40dB(0dB=1V/Pa) 2/6 B. Frequency Response D. APPEARANCE DRAWING 3/6 E. MEASUREMENT CIRCUIT Vs:Source Voltage 4.5V RL:Load Resistance 2.2KΩ C1=10pF C2=33pF F: Explode Drawing 4/6 G. 可靠性试验 Reliability Test 经过以下所有试验在 20℃的条件下放置 3 小时后,麦克风的灵敏度与试验前比较变化在 3dB 以 内 After any following tests, the sensitivity of the microphone to be within ±3dB of initial sensitivity after 3hours of conditioning at 20℃ 5-1 振动试验 周波数 1/Frequency1:10Hz～55Hz Vibration 振幅/Amplitude:1.52mm 变化/Change of Frequency:1 octave/min 3 方向,各 2 小时/hours in each of 3 axes 5-2 高温试验 +60±5℃ for 96 hours Dry Heat 5-3 低温试验 -20±5℃ for 96 hours Dry Cold 5-4 高温高湿试验 90%～95%RH,+60±5℃ for 96 hours Damp Heat 5-5 温度循环试验 -20℃ 25℃ 60℃ Temperature cycles (2h) (1h) (2h) (1h) (2h)×10 cycles 5-6 跌落试验 Height:1m Packing drop test 顺序:三个面各跌 10 次 Procedure:10 times from each of 3 axises 5-7 温度冲击试验 -20℃ 60℃ Temperature impact test 30min 30s 30min ×10 cycles 5-8 静电冲击试验 4000V(contact), 8000V(air) ×10 axises Electrostatic shock test 备注 Note 6-1 工作温度范围 Operation Temperature -20℃～60℃ 6-2 储存温度范围 Storage Temperature -30℃～70℃ H. 焊接条件 Soldering Condition 7-1 焊接使用 90W 的烙铁。 The soldering copper of a type of 90W shall be applied 焊接条件 Soldering Condition. 7-2 电烙铁表面温度 320±10℃ The temperature of the working surface of the soldering copper shall be 320±10℃ 7-3 焊接时把麦克风嵌入散热能力强的金属块内。 ECM shall be soldered fixed on the metal block(heat sink)which has the higher radiation effects said heat sink 5/6 Shall contact with of ECM. 7-4 焊接时间控制在 2～3 秒内。 time for each terminal shall be 2～3 sec. 7-5 焊接后不能出现针孔。 The pinhole after soldering shall be avoided. 7-6 静电容易破坏麦克风必须采取措施避免（电烙铁接地，戴静电环等。） ECM may easily destroyed by the static electricity and the countermeasure for eliminating the static electricity (the ground for soldering copper, for worktable and for human body) shall be executed. 7-7 散热板形状 Shape of heat sink 7-8 固定部孔形状 Shape of hole at fixed part 6/6