ROHM Semiconductor USA, LLC Audio Special Purpose BD3812F-E2

The BD3812F-E2 is an electronic volume control IC designed for audio applications such as AV receivers and home theater systems. It features a dual-channel independent volume control with a range from 0 to -103 dB and a mute function adjustable in 1 dB steps. The device supports a maximum output voltage of 4.2 Vrms and can be controlled via a 2-line serial interface compatible with both 3.3V and 5V systems. This IC allows for the connection of up to four chips on a common bus line, enabling a maximum of eight channels when combined with other compatible devices. It has a low residual noise level of 1.2 ¬µVrms and a dynamic range of 131 dB, making it suitable for high-fidelity audio applications. The built-in output gain amplifier provides adjustable output signal voltage from 0 dB to 18 dB in 2 dB steps. The BD3812F-E2 operates within a temperature range of -20 to +75¬8C and has a maximum power dissipation rating of 450 mW. It is important to note that proper power supply sequencing is required to prevent damage to the IC.