ITC-AU803 Free-Field Microphone Accessory
ITC-AU803 is a pre-polarized electret 1/2 inch measurement microphone, compliant with IEC61672 Class 1 standard.
Product Overview
ITC-AU803 is a pre-polarized electret 1/2 inch measurement microphone, compliant with IEC61672 Class 1 standard.
Technical Specifications
| Parameter | Specification |
|---|---|
| Sound‑field Type | Free‑field |
| Pressure Equalization | Rear‑vented |
| Sensitivity | ‑26 ± 1.5 dB (50 mV/Pa) |
| Frequency Response | 10 Hz ~ 20 kHz, complies with 1/2‑inch IEC 61672 Class 1 frequency‑response requirements |
| Polarization Voltage | 0 V |
| Upper Dynamic‑Range Limit | ≥ 146 dB (THD = 3%) |
| Self‑noise Level | ≤ 16 dB(A) |
| Pressure Coefficient (250 Hz) | ‑0.010 dB/℃ (‑10 ~ +50 ℃) |
| Temperature Coefficient (250 Hz) | ‑0.005 dB/℃ |
| Relative Humidity Range (non‑condensing) | 0 ~ 90% RH |
| Humidity Coefficient | < 0.1 dB (0 ~ 90% RH, non‑condensing) |
| Operating Temperature Range | ‑25 ~ 55 ℃ |
| Operating Humidity Range | 0 ~ 98% RH |
| Typical Operating Current | IEPE 4 mA |
| Connector | SMB |
| Outer Diameter | 13.2 mm (with protective cap); 12.7 mm (without protective cap) |
| Length | 17.5 mm (with protective cap); 16 mm (without protective cap) |