Overview
The SSM2166SZ, produced by Analog Devices Inc., is a highly versatile and integrated microphone preamplifier designed to condition microphone inputs in various audio systems. It features a low noise, voltage-controlled amplifier (VCA) that dynamically adjusts gain to maintain a set compression characteristic. This component is particularly useful in computer audio systems, communications, and public address systems, enhancing vocal clarity and optimizing signal levels before digitization.
Key Specifications
| Parameter | Description |
|---|---|
| Package Type | 14-lead SOIC |
| Operating Temperature Range | −40°C to +85°C |
| Compression Ratio | 1:1 to over 15:1 (set by a single resistor) |
| Fixed Gain | Up to 20 dB in 1:1 compression setting |
| Front-end Gain | 0 dB to 20 dB |
| Noise Gate | Downward expander to prevent noise or hum amplification |
| RoHS Compliance | Yes |
Key Features
- Low noise, voltage-controlled amplifier (VCA) with dynamic gain adjustment.
- Variable compression ratio set by a single resistor (1:1 to over 15:1).
- Fixed gain of up to 20 dB in 1:1 compression setting.
- Front-end gain configurable from 0 dB to 20 dB.
- Downward expander (noise gate) to prevent amplification of noise or hum.
- High degree of flexibility through VCA gain, rotation point, and noise gate adjustment pins.
- RoHS compliant.
Applications
- Microphone preamplifiers/processors.
- Computer sound cards.
- Public address/paging systems.
- Communication headsets.
- Telephone conferencing.
- Guitar sustain effects generators.
- Computerized voice recognition.
- Surveillance systems.
- Karaoke and DJ mixers.
Q & A
- What is the primary function of the SSM2166SZ?
The SSM2166SZ is a microphone preamplifier with variable compression and noise gating, designed to condition microphone inputs in audio systems.
- In what package is the SSM2166SZ available?
The SSM2166SZ is available in a 14-lead SOIC package.
- What is the operating temperature range of the SSM2166SZ?
The operating temperature range is −40°C to +85°C.
- How is the compression ratio set in the SSM2166SZ?
The compression ratio is set by a single resistor and can be varied from 1:1 to over 15:1.
- What is the maximum fixed gain in the 1:1 compression setting?
The maximum fixed gain in the 1:1 compression setting is up to 20 dB.
- What is the purpose of the downward expander (noise gate) in the SSM2166SZ?
The downward expander (noise gate) prevents the amplification of noise or hum.
- Is the SSM2166SZ RoHS compliant?
Yes, the SSM2166SZ is RoHS compliant.
- In which applications is the SSM2166SZ commonly used?
The SSM2166SZ is commonly used in microphone preamplifiers, computer sound cards, public address systems, communication headsets, and other audio applications.
- How does the SSM2166SZ improve vocal clarity in communications and public address systems?
The SSM2166SZ improves vocal clarity by dynamically adjusting the gain to maintain a set compression characteristic and by preventing the amplification of noise or hum through its noise gate feature.
- Can the front-end gain of the SSM2166SZ be adjusted?
Yes, the front-end gain can be configured from 0 dB to 20 dB.
