ROHM BD3812F Data Sheet
Summary
Elevate your audio experience with this high-performance electronic volume processor and signal conditioner. Engineered primarily for AV receivers, home theater systems, and mini-component setups, it provides sophisticated, multi-channel volume control along with an integrated gain amplifier function. The accompanying manual offers comprehensive technical specifications, detailing precise operational parameters, serial data integration methods, and advanced electrical characteristics necessary for seamless incorporation into complex audio visual equipment.
Page 1 Text Content
Sound Processors for Home Theater Systems
2ch Electronic Volume
No.10081EAT03
BD3812F
●Description BD3812F is an electronic volume having volume, gain amplifier functions necessary for applications in AV receivers, home theatre systems, min-component systems and so forth. Having a chip select terminal, it can be controlled until 4 chips with common bus line.
●Features 1) Residual noise : 1.2µVrms {dynamic range : 131d B (IHF-A)} 2) 2ch independent volume (0 to -103d B, MUTE 1d B/step) 3) 8ch at maximum available in combination of any of BD3811K1, BD3813KS, BD3814FV, BD3815KS (6ch volume) in common bus line 4) It can be controlled until 4 chips with common bus line at the same time 5) Maximum output voltage : 4.2Vrms (Vcc=7, VEE=-7V, RL=10kΩ) 6) 2-line serial control (for both 3.3V and 5V) 7) Built-in Output gain amplifier for adjustment of output signal voltage (0, 6 to 18d B, 2d B/step) 8) Output mute controllable by serial data and external control terminal
●Applications AV receivers, home theater systems, mini-component systems, etc.
●Absolute maximum ratings (Ta=25℃)
Parameter Symbol Ratings Unit
VCC 7.5
Powewr supply voltage
VEE -7.5
Input signal voltage VIN VCC+0.3 to VEE-0.3 V
Power dissipation Pd 450*2 m W
Operating temperature range Topr －20 to +75 ℃
Storage temperature range Tastg －55 to +125 ℃ *1 Even in the specified range of Power Supply Voltage, applying voltage only to the VCC side may cause an excessive current to give a permanent damage to the IC. When starting up power supplies, VEE and VCC should be powered on simultaneously or VEE first; then followed by VCC. *2 Over Ta＝25°C, reduce at the rate of 4.5m W/°C. When installed on the standard board (size: 70x70x1.6mm).
●Operating conditions It must function normally at Ta＝25°C.
Ratings
Parameter Symbol Unit
Min. Typ. Max.
VCC 5 7 7.3
Operating source voltage
VEE -7.3 -7 -5
www.rohm.com 2010.06 - Rev.A
© 2010 ROHM Co., Ltd. All rights reserved.
Page Summary Contents For ROHM BD3812F Data Sheet
Manual Details
| Brand | ROHM |
|---|---|
| Pages | 10 |
| File Size | 331.25 KB |
| Published | July 07, 2026 |
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Frequently Asked Questions
What are the required power supply voltages for operation?
VCC must be between 5V and 7.3V, and VEE must be between -5V and -7.3V.
How can I use this device in a common bus line setting?
It can be controlled alongside up to four chips using a common bus line for applications requiring up to 8 channels.
What is the maximum output voltage of the BD3812F?
The maximum output voltage is listed as 4.2Vrms, measured at THD=1%.
Are there specific setup procedures for powering on the unit?
When starting up power supplies, VEE and VCC should be powered on simultaneously or VEE first, followed by VCC.