Precision Audio and AV Interface Products

Radio Design Labs

ST-IC1 Intercom Amplifier

  • Intercom Electronics
  • Intercom with Push-to-Talk
  • Mic or Speaker Input
  • 8 Ω or 45 Ω Speakers
  • Bidirectional Communication Option
  • Overview
  • Specifications
  • Related Products
  • Accessories
  • Downloads
  • How to Buy
  • Product Series
  • Dimensions

The ST-IC1 is the ideal choice where an intercom system is to be installed, or where an amplifier is needed to bring a mic level up to a 1 W speaker level with optional muting capability.

The ST-IC1 has one input, one output and two muting control terminals.

The input accepts a dynamic mic, a condenser mic (a phantom supply input terminal is provided to power condenser mics), an 8 Ω speaker or a 45 Ω speaker. The gain range of the module is sufficient to accommodate this wide variety of source levels.

The output is ground-referenced, and drives more than 1 watt RMS into an 8 Ω load. The output circuit can be connected to any load impedance of 4 Ω or greater.

Applications

Input:
>600 Ω balanced
Frequency Response:
300 Hz to 4 kHz (± 2 dB, filtered for voice band intelligibility)
Gain:
Off to 70 dB (adjustable)
Input level for 1 W RMS output:
-60 dBu (8 Ω source); -55 dBu (600 Ω source)
THD+N:
< 1% (1 kHz, referred to 1 W @ 50 dB gain)
Residual Noise (below 1 W):
< 75 dB (60 dB gain setting, unmuted)
Maximum Output Power:
1.5 W RMS (before clipping)
Mute Inputs (2):
Trigger on high to low transition, 2 mA, 15 V pullup; Trigger on low to high transition, 0.1 mA
Mute Attenuation:
> 115 dB (1 kHz)
Mute Switching Type:
Solid-State, no relay contacts used
Mute Release Delay:
15 ms
Ambient Operating Environment:
0° C to 40° C
Power Requirement:
GROUND-REFERENCED, 24 Vdc @ 175 mA
Dimensions:
Height: 0.7 in. (7.7 cm), Width: 3 in. (7.6 cm), Depth: 1.6 in. (3.9 cm)
Package Type:
Cardboard Box
Package Dimensions:
2 x 2 x 4 in.
Shipping Weight:
0.185 lbs.
WEEE weight:
0.13 lbs.
Tariff code:
8543.70.9860

Documents:
Format
PDF
CAD Files:
Format
High Res Images:
Format
Declaration of Conformity:
Format
PDF
A&E Specifications:
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ST-IC1 ST-IC1