The SSM21652SZ is a low-voltage, single-chip audio subsystem from Analog Devices (ADI). This part integrates a preamplifier, compressor/limiter, and a noise gate, making it well-suited for dynamic range control in various audio applications. Its low-noise performance and comprehensive feature set enable high-quality audio processing in portable devices and recording equipment.

Applications:

• Portable audio recorders
• Wireless microphones
• Guitar amplifiers
• Compressors and expanders
• Voice communication systems

Features:

• Integrated preamplifier
• Compressor/limiter with adjustable ratio and threshold
• Noise gate with adjustable threshold
• Low noise and distortion
• Wide input voltage range
• Single-supply operation
• Small package size

Benefits:

• Improved audio quality: The integrated compressor/limiter reduces dynamic range, preventing clipping and maintaining consistent audio levels.
• Reduced noise: The noise gate eliminates unwanted background noise, improving clarity and intelligibility.
• Simplified design: The all-in-one solution reduces the number of external components required, simplifying system design and reducing board space.
• Extended battery life: Low-voltage operation minimizes power consumption, extending battery life in portable devices.
• Enhanced performance: The combination of preamplifier, compressor/limiter, and noise gate provides a comprehensive audio processing solution.

Technical Specifications:

The SSM21652SZ typically operates from a single 2.7V to 5.5V supply. The preamplifier offers adjustable gain, allowing for optimization of input signal levels. The compressor/limiter features adjustable ratio and threshold parameters, enabling fine-tuning of dynamic range control. The noise gate also features an adjustable threshold, allowing for precise noise reduction. Key performance parameters include THD+N (Total Harmonic Distortion + Noise), SNR (Signal-to-Noise Ratio), and dynamic range. The specific values for these parameters can be found in the Analog Devices SSM21652SZ datasheet.

The small package size allows for easy integration into space-constrained applications. The device is designed for low-power operation, making it suitable for battery-powered devices.