ROHM Manuals (Industrial)

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BH7884EFV is a low voltage, low noise, high output speaker and headphone amplifier drive from ROHM. It is manufactured using Bi-CMOS process. This IC supports: headphone amplifier gain adjustment, active/suspend switching, speaker amplifier stereo/monaural switching, and amplifier mute switching. All functions are controllable from a microcontroller. Built-in digital noise reduction circuits eliminate digital noise and BEEP sounds.

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BD5413EFV is a 5W + 5W stereo Class-D power amplifier specifically developed for low power consumption and low heat generation applications like powered speakers. BD5413EFV employs the state-of-the-art BCD (Bipolar, CMOS and DMOS) process technology to eliminate a turn-on resistance in the output power stage and an internal loss due to a wiring resistance as much as possible, achieving a high performance of 80% (4W + 4W output with a load resistance of 8Ω). In addition, BD5413EFV employs a compact power package which dissipates heat via the rear to achieve low power consumption and low heat generation so that the need for connecting an external heat radiator can be eliminated up to a total output of 12.8W. This product meets the needs for compact, thin sound generation systems and powerful, high-quality sound reproduction.

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BD5423AEFS is a 17W + 17W stereo class-D power amplifier IC, developed for space-saving and low heat-generation applications such as low-profile TV sets. The IC employs state-of-the-art Bipolar, CMOS, and DMOS (BCD) process technology that eliminates turn-on resistance in the output power stage and internal loss due to line resistances up to an ultimate level. With this technology, the IC has achieved high efficiency of 90% (10W + 10W output with 8Ω load), which is the top class in the industry. The IC, in addition, employs a compact back-surface heat radiation type power package to achieve low power consumption and low heat generation and eliminates necessity of installing an external radiator, up to a total output of 34W. This product satisfies both needs for drastic downsizing, low-profile structures and powerful, high- quality playback of the sound system.

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The BD5423MUV is a 17W + 17W stereo D-class power amplifier IC developed for space-saving and low-heat applications such as low-profile TV sets. The IC employs state-of-the-art Bipolar, CMOS, and DMOS (BCD) process technology that eliminates turn-on resistance in the output power stage and internal loss due to line resistances up to an ultimate level. With this technology, the IC has achieved high efficiency of 90% (10W + 10W output with 8Ω load), which is the top class in the industry. The IC, in addition, employs a compact back-surface heat radiation type power package to achieve low power consumption and low heat generation and eliminates necessity of installing an external radiator, up to a total output of 34W. This product satisfies both needs for drastic downsizing, low-profile structures and powerful, high-quality playback of the sound system.

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BD5424EFS is a 20W + 20W stereo class-D power amplifier IC developed by ROHM for space-saving and low heat-generation applications such as low-profile TV sets. The IC employs state-of-the-art Bipolar, CMOS, and DMOS (BCD) process technology that eliminates turn-on resistance in the output power stage and internal loss due to line resistances up to an ultimate level. With this technology, the IC has achieved high efficiency of 91% (10W + 10W output with 8Ω load), which is the top class in the industry. The IC, in addition, employs a compact back-surface heat radiation type power package to achieve low power consumption and low heat generation and eliminates necessity of installing an external radiator, up to a total output of 40W. This product satisfies both needs for drastic downsizing, low-profile structures and powerful, high-quality playback of the sound system.

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BD5444EFV is an analog input Class D speaker amplifier designed for flat-panel TVs, with features of space-saving and low power consumption, delivering an output power of 20W+20W.

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BD5460GUL is a low voltage drive class-D monaural speaker amplifier that was developed for cellular phones, mobile audio products and the others. LC-filter of speaker output is unnecessary, and the number of external components is three. It is suitable for the application of battery drive because of high efficiency and low power consumption. Also, stand-by current is 0µA (typ.), and fast transitions from standby to active with little pop noise. It is suitable for applications that switch repeatedly between stand-by and active.

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BD5466GUL is a single-channel Class-D speaker amplifier with ALC function for mobile phones, portable electronic devices, etc.

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BD5471MUV is a low voltage drive class-D stereo speaker amplifier that was developed for note-book PC, cellular phone, mobile audio products and the others. It is unnecessary for LC filters of speaker outputs. Only 7 external components are needed for speaker system. Also, 3.3V regulator in BD5471MUV can use power supply for audio-codec. BD5471MUV, that is high-efficiency, low consumption, is suitable for application by using battery. Shutdown current is 0µA typically. Also, start-up time is fast from shutdown to active mode. BD5471MUV can use for some applications that change mode between “shutdown state” and “active state”.

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The BD7830NUV is a monaural speaker amplifier developed by ROHM for use in portable navigation and mobile audio products. It operates at low voltage and consumes 0µA in standby mode. It also switches quickly and quietly from standby to ON, making it ideal for applications where there is frequent switching between standby and ON.

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This document is the datasheet of BD7836EFV. BD7836EFV is a Class-AB stereo speaker amplifier, suitable for notebook PC, desktop PC, portable devices and others.

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BD3812F is an electronic volume control with volume, gain amplifier functions necessary for applications in AV receivers, home theatre systems, min-component systems and so forth.

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BD3811K1 and BD3818KS are 5.1ch sound processors, with built-in Mode Selector/Input Selector. Functions, including 6-ch Volume, Gain Amp, Bass, Treble, Mixing (BD3818KS), Dynamic Bass Boost (BD3818KS) and Bass Boost (BD3811K1) are integrated into a single chip.

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This is a car audio sound processor with low power, low energy design features, can be controlled by I2C BUS control 3-band equalizer, support 1 dB step gain adjustment

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BD37513FS, BD37514FS, BD37515FS are sound processors built-in 2-band equalizer for car audio. The functions are stereo 4ch input selector, input-gain control, main volume, loudness, 5ch fader volume (About BD37513FS, 4ch fader volume are available). Moreover, “Advanced switch circuit”, that is ROHM original technology, can reduce various switching noise (ex. No-signal, low frequency likes 20Hz & large signal inputs). “Advanced switch” makes control of microcomputer easier, and can construct high quality car audio system.

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BD3460FS,BD3461FS,BD3464FV,BD3465FV are 4ch/6ch electronic volume which has audio efficiency of the industry best level. It has 『Outside sound mixing function (with volume)』(BD3461FS, BD3465FV) in favorite channel to mixing of the portable telephone and car navigation’s guide sound. Also, which has 『Ground isolation amplifier』(BD3460FS, BD3461FS) when connecting with the outside voice inputs such as portable audio and car navigation. It is lineup and possible to be chosen to the use by it. Also, Rohm has the volume switching shock sound prevention technique “Advanced switch”. Therefore, it supports the construct of the high quality car audio space by the simple control.

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BD3452KS is a sound processor that integrates functions including Input Selector, 8ch Volume and Gain Amp for applications such as AV receivers, home theater systems and mini-component systems. Adopting the BiCMOS process achieves low distortion, low noise and a wide dynamic range.

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This document introduces the Sound Processor Series for Car Audio from ROHM, including the BD3433K 6ch Electronic Volume for 5.1ch Car Theater. It features high voltage output, low distortion, and low noise, making it suitable for applications such as car audio and car navigation.

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