RTI Tech
MODEL 1205, 1205A PERFORMANCE SPECIFICATION

New subminiature condenser microphones designed for sampling sound in active noise reduction systems. Frequency response is overdamped with flat curve from 30Hz to 8kHz and phase is controlled. Model 1205A can be used in high sound levels to 145dB without significant distortion. Low self noise reduces objectionable background hiss. A novel back electret and low mass diaphragm assure low sensitivity and stable aging properties. Internal RFI filter capacitors can be supplied as option "C".

  
981107-1205&A.a.tif (44116 bytes)
 
MODEL 1205
Noise level («A»-weighted)
(1 kHz SPL Equivalent of noise)		 25 dB Nominal
Output impedance 3 kOhm (2–6kOhm)
Electrical Connection 3 solder pads on end
981107-1205A-b.gif (9608 bytes)
Supply voltage 1.3 V (1–20 V)
Distortion (1% THD) 118 dBSPL
Current drain 30 µA at 1.3V (10–60 µA)
 
MODEL 1205A
Bipolar bias connection with external rsistor and independant ground as per the diagram below
 

 

981107-1205A-c.gif (2985 bytes)
Supply voltage ±12 V
Distortion (1% THD) 145 dBSPL
Current drain 500 µA
Patents Granted and Pending

 

981107-1205&A-d.tif (131312 bytes)   RTI Tech Pte Ltd
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Singapore 139944
Tel: 65-776-1021
Fax: 65-779-1021
Contact: Hedy Teo, hedyteo@pacific.net.sg