ROHM BD3822FS BD3824FS Data Sheet
Summary
Upgrade your video and audio recording systems using these highly efficient integrated circuit selectors. This manual introduces two compatible models, BD3822FS and BD3824FS, designed to serve as advanced audio interfaces for DVD recorders. They offer robust NTSC/PAL signal handling with superior low distortion, ultra-low noise performance, and built ALC compatibility for RF output applications. Optimized for energy efficiency via Bi-CMOS technology, these ICs are essential for engineers developing high-quality, reliable A/V equipment needing integrated audio I/O solutions.
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TECHNICAL NOTE
Video/Audio Interfaces for TV and DVD Recorders
NTSC-PAL Audio I/O Interface for Recording/Playing BD3822FS, BD3824FS Description BD3822FS and BD3824FS are the audio selectors with internal input selector, gain amp, ALC and power save ON/OFF functions. BD3822FS contains the 1/2 power compression amp for level meter and 2ch volume. BD3824FS contains the line amp. BD3822FS and BD3824FS unify the board pattern by pin compatible, and can be used individually as a high-end and low-end model.
Features 1) Low distortion (0.0015%) and low noise (3.2μVrms) by using a resistance ladder type circuit for volume. Shock sound in switching is also reduced (BD3822FS) 2) Low distortion (0.0015%) and low noises (2.3μVrms)(BD3824FS) 3) Contains an ALC circuit, and can also be used as an RF output 4) Best suited to energy-saving design by low current consumption by using the Bi-CMOS process; compact regulator in the set, being advantageous to heating in terms of quality 5) SSOP-A32 is used for package. The PCB layout can be easy and the area of PCB is reduced by putting sound input terminals together, and output terminals, too. 6) BD3822FS and BD3824FS can be used with the same PCB board. 7) I2C BUS data format of BD3822FS is upward compatible with BD3824FS, and can be used without changing the software. 8) A system is employed, in which the waveform connected to the input (tuner, Front, Ext) is not distorted even in standby mode.
Applications DVD recorder
Product lineup
Function BD3822FS BD3824FS
Volume function Available - 1/2 power compression amp Available - Line amp - Available Circuit current (m A) 7 6.4 Output noise (μVrms) 3.2 2.3 BD3822FS is an upstream compatible IC with BD3824FS.
Ver.B Oct.2005
Page Summary Contents For ROHM BD3822FS BD3824FS Data Sheet
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 9 |
| File Size | 495.75 KB |
| Published | June 18, 2026 |
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Frequently Asked Questions
What is the difference between BD3822FS and BD3824FS?
BD3822FS includes a 1/2 power compression amp for level meter and volume, while BD3824FS features a line amp.
Are these two ICs compatible with each other?
Yes, they unify the board pattern by pin compatibility and can be used individually or together on the same PCB board.
How is BD3822FS related to BD3824FS regarding software?
The I C BUS data format of BD3822FS is upward compatible with BD3824FS, allowing use without changing the software.