RTI Tech
MODEL 2143 PERFORMANCE SPECIFICATIONNew subminiature transducers for applications demanding the ultimate
in vibration immunity and ultra small size such as hearing aids worn in the ear. This is
the Zero G line which incorporates a novel diaphragm construction which reduces
interference caused by mechanical vibration. The response features low frequency
attenuation of about 12 dB/octave and slightly damped resonance to reduce feed-back. An
internal preamp facilitates applications.
Supply voltage |
1.3 V (0.9-3V) |
| Current drain at 1.3 V |
30µA (10–50 µA) |
| Output impedance at 1.3 V |
3 kOhm (2–6 kOhm) |
Noise level («A» -weighted)
(l kHz equivalent SPL) |
23 dB (26 dB Max) |
Sensitivity to vibration
(1 kHz equivalent SPL) |
< 66 dB per g |
Sensitivity (dBV) |
| Frequency |
min |
nom |
max |
|
| 100 Hz |
|
-71 |
|
| 3500 Hz |
-58 |
- 54 |
-50 |
| » 5200 Hz |
|
- 57 |
|
|
Device conformity range of deviation from 1 kHz |
|
| 100 Hz |
-15 dB |
to |
-19 dB |
| 3500 Hz |
0 dB |
|
0 dB |
| » 5200 Hz |
+0 dB |
to |
+7 dB |
|
| Patented under US
4,764,690 and others pending |
|
 |
DIMENSIONS
IN MM (INCHES) |
|
