BD3822FS-E2

Overview

The BD3822FS-E2 is an audio signal processor manufactured by Rohm Semiconductor, designed for consumer audio applications such as DVD recorders. It integrates an input selector, gain amplifier, automatic level control (ALC), and power save functions. The device features a resistance ladder type volume circuit to minimize distortion and switching shock sounds. Key electrical parameters include a supply voltage range of 7V to 9.5V, a typical quiescent current of 7mA, and a total harmonic distortion of 0.0015%. It operates within a temperature range of -40°C to +85°C and utilizes an I2C interface for control.

Feature Summary

• Integrates input selector, gain amp, ALC, and power save ON/OFF functions
• Low distortion (0.0015%) and low noise (3.2μVrms) via resistance ladder volume circuit
• I2C BUS data format upward compatible with BD3824FS
• Waveform preservation in standby mode without input distortion

Applications

• DVD recorders
• Video/Audio interfaces for TV and DVD recorders
• NTSC-PAL Audio I/O systems

Procurement Notes

Verify the specific E2 suffix against the manufacturer's latest documentation to confirm packaging details and RoHS compliance status. Confirm availability as this component may be subject to discontinuation or lifecycle changes. Ensure the ordering quantity matches the standard tape and reel configuration specified in the official datasheet.

Selection Notes

Select the BD3822FS-E2 when volume control and a 1/2 power compression amplifier are required, distinguishing it from the BD3824FS which lacks these features. Both models share pin compatibility and PCB layout requirements, allowing for flexible design choices between high-end and low-end configurations based on feature needs.

Part Context

The BD3822FS is part of a unified product lineup that includes the BD3824FS. These components are designed to unify board patterns through pin compatibility, enabling them to serve as high-end and low-end models respectively. They utilize Bi-CMOS processes for energy-saving designs and compact regulator integration.

Replacement Considerations

The BD3824FS is a pin-compatible alternative within the same series. While functionally similar, the BD3824FS lacks the volume function and 1/2 power compression amp found in the BD3822FS. Software compatibility is maintained due to upward compatible I2C data formats.