SA572 is a dual-channel, high-performance gain control circuit in which either channel may be used for dynamic range compression or expansion. Each channel has a full-wave rectifier to detect the average value of input signal, a linearized, temperature-compensated variable gain cell (�G) and a dynamic time constant buffer. The SA572 is intended for noise reduction in high-performance audio systems. It can also be used in a wide range of communication systems and video recording applications.
The SA572 programmable analog compandor provides dual‑channel gain control for compression or expansion in high‑performance audio, communication and video applications. Each channel includes a full‑wave rectifier, a temperature‑compensated variable gain cell and a buffer that allows independent attack and recovery time adjustment with minimal external components.
The device operates from 6 V to 22 V, draws less than 6 mA, and offers a typical low‑noise floor of 6 µV. It is supplied in SOIC‑16, PDIP‑16 and TSSOP‑16 packages, with Pb‑free options available. Detailed pin functions, maximum ratings, and electrical characteristics are provided for designers.
| Supply Voltage Range | 6.0 V – 22 V |
|---|---|
| Operating Temperature Range | -40 °C to +85 °C |
| Power Dissipation | 500 mW |
| Typical Low Noise | 6.0 µV |
| Typical Supply Current | < 6.0 mA |
| Dynamic Range | > 110 dB |
The SA572 operates from 6.0 V up to 22 V.
The device has a typical input‑referred noise of 6.0 µV.
Supply current is less than 6.0 mA.