BD3823FV-E2

Overview

The BD3823FV-E2 is a low-noise, low-distortion audio signal processor manufactured by Rohm Semiconductor. It integrates a 5-channel selector and a resistor-ladder type volume circuit within a 20-LSSOP package. The device operates on a single power supply ranging from 7V to 14.5V with a typical quiescent current of 2.5mA. Key electrical specifications include a total harmonic distortion (THD) of 0.0015% at -6dB attenuation and an output noise voltage of 3.2μVrms. It features I2C bus interface control for input selection, volume adjustment, and gain setting.

Feature Summary

• Resistor-ladder volume circuit providing 0.0015% THD and 3.2μVrms noise at -6dB attenuation
• I2C bus interface for digital control of 5-channel input selection and volume/gain settings
• Wide power supply voltage range (7V to 14.5V) supporting high S/N ratio performance
• Bi-CMOS process technology enabling low current consumption and energy saving design

Applications

• DVD recorders
• NTSC-PAL audio I/O systems
• Video/audio interface circuits for recording

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status via official documentation. Check for obsolescence notices as the product datasheet indicates a publication date of October 2005. Ensure ordering suffix E2 matches required packaging specifications.

Selection Notes

Select this component for applications requiring low distortion audio switching and volume control. Ensure the power supply voltage remains within the 7V to 14.5V operating range. Verify that the I2C bus timing requirements are met by the host controller. Consider thermal dissipation limits when designing the PCB layout for the SSOP-B20 package.

Part Context

The BD3823FV belongs to Rohm's audio signal processor family designed for consumer electronics. It utilizes Bi-CMOS technology to achieve low power consumption while maintaining high audio fidelity. The device is specifically optimized for NTSC-PAL audio interfaces in video recording equipment.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Consult Rohm Semiconductor for potential alternative components if this part is discontinued.

FAQ

What is the maximum input voltage for the BD3823FV?

The absolute maximum input voltage is VCC + 0.3V to GND - 0.3V. Under normal operation at VCC=14.5V, the maximum input voltage is approximately 4.2Vrms.

How does the SELECT pin affect the I2C address?

The SELECT pin determines the slave address bits A1 and A0. When connected to GND, the address ends in 00; when connected to VCC, it ends in 10, allowing two chips to operate on the same bus.

What is the volume control resolution?

The volume control has a step resolution of 0.5dB from 0dB to -30.5dB, and 5dB steps from -5dB to -30dB.