ROHM BD3825FS Data Manual
Summary
This specialized audio signal switch IC, BD3825FS, is essential for developing sophisticated portable and home entertainment devices, such as DVD recorders and Set-Top Boxes (STBs). It efficiently manages multiple audio input lines while providing robust function switching capabilities. This summary details the product's technical features, operational requirements, and application guidelines. It is designed for electrical engineers and system integrators building high-performance A/V equipment requiring precise signal switching and mute functions.
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TECHNICAL NOTE
Video/Audio Interfaces for TV and DVD Recorders
PAL Audio I/O Interface BD3825FS Description BD3825FS is an audio signal switch IC used for PAL DVD-Recorders. BD3825FS supports six input lines which are controlled by the I2C-BUS of video signal LSI BH7624KS2. In addition, BD3825FS has two built-in Function Switch features. Features 1) Vcc = ±5V (for Audio signal), +12V (for Function SW) Audio SW (C-MOS analog switch configuration) 2) 3 inputs - 1output SW, (2 circuits built-in with MUTE function) 3) 2 inputs - 1output SW, (2 circuits built-in with MUTE function) 4) THD (typ.) = 0.007% 5) S/N (typ.) = 90d B 6) Crosstalk (typ.) = 90d B 7) ON resistance (max.) = 300 8) 2 Function Switch outputs
Applications DVD-Recorder, STB, etc.
Absolute maximum ratings Ta=25°C
Parameter Symbol Limits Unit
Power Supply Voltage1 V1 6.0 V
Power Supply Voltage2 V2 13.5 V
Power Dissipation Pd 800 *1 m W
Operating Temperature Range Topr -25 +75 °C
Storage Temperature Range Tstg -55 +125 °C
*1 Reduced by 9 m W/ C over 25 C.
Operating range (Ta=25°C) Parameter Symbol Limits Unit
Supply voltage1 Vcc1 4.5 5.5 V
Supply voltage2 Vcc2 11.5 12.5 V
Note: This IC is not designed to be radiation-resistant.
Ver.B Oct.2005
Page Summary Contents For ROHM BD3825FS Data Manual
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 9 |
| File Size | 421.83 KB |
| Published | June 06, 2026 |
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Frequently Asked Questions
What kind of devices does the BD3825FS support?
It is an audio signal switch IC designed for PAL DVD-Recorders, STBs, and similar applications.
Does the device have built-in mute functions?
Yes, it features two different audio switches (SW1 and SW2), each with two circuits built in that include a MUTE function.
What are the required power supply voltages for operation?
The device requires Vcc1 of ±5V and Vcc2 of 12V. Additionally, +12V is needed for the Function Switch (FS).