BU9253FS-E2

Audio Special Purpose Overview

The BU9253FS-E2 is a digital echo control IC designed for karaoke and surround sound applications, manufactured by ROHM Semiconductor. It integrates an A/D converter, D/A converter, SRAM, low-pass filter (LPF), and mixer to configure echo functions with minimal external components. The device operates on a single power supply within the voltage range of 4.0V to 5.5V. Key electrical parameters include a typical current consumption of 6mA, an oscillation frequency of 375kHz, and a fixed delay time of 131ms at a clock frequency of 357kHz. It features an internal mute function and adjustable echo mixing ratios via DC voltage control.

Audio Special Purpose Applications

• Karaoke systems
• Portable stereo sets
• Mini component stereo sets
• Video CD and DVD players

Audio Special Purpose Procurement Notes

The BU9253FS-E2 is listed as 'Obsolete' or 'End of Life' by major distributors such as Mouser. Verify the specific suffix E2 against the manufacturer's official documentation to confirm availability and compliance status. The base model BU9253FS is documented in public datasheets; ensure the E2 variant matches the required RoHS and packaging specifications before procurement.

Audio Special Purpose Selection Notes

Select this IC for applications requiring a dedicated echo processor with minimal external component count. Ensure the design supports a single 5V supply and accommodates the 16-SSOP-A package. Verify that the required delay time of 131ms aligns with the system audio latency requirements.