SBOS218A is a digital volume controller produced by Texas Instruments. It has two independent audio channels, zero crossing detection, and mute function. This product has a wide gain and attenuation range, low noise and distortion, noise-free level transitions, low interchannel crosstalk, and is suitable for audio amplifiers, mixing consoles, multi-track recorders, broadcasting studio equipment, musical instruments, effect processors, A/V receivers, and car audio systems.
The PGA2311 is a high-performance, stereo audio volume control designed for professional and high-end consumer audio systems. It features digitally-controlled analog volume with two independent channels and a serial control interface. The device offers a wide gain range from +31.5dB to -95.5dB in 0.5dB steps.
| Gain Range | +31.5dB to -95.5dB |
|---|---|
| THD+N (U-Grade) | 0.0004% at 1kHz |
| Dynamic Range | 120dB |
| Operating Temperature Range | -40°C to +85°C |
| Supply Voltage (Analog) | +5V Analog, -5V Analog |
The maximum input or output voltage range is 7.5Vp-p when powered by +5V and -5V supplies.
The circuit enters a hardware MUTE state and resets internal flip-flops for about 100ms on power up.