ROHM Semiconductor GmbH Datasheets for Audio Amplifiers and Preamplifiers

Audio amplifiers and audio preamplifiers are used to increase the amplitude of sound signals.  Preamplifiers or preamps are designed to amplify low-level signal from a high-impedance device such as a microphone or instrument pick-up. After pre-amplification, the signal is sent to a power amplifier or amp, which provides the higher current necessary to drive the speakers.
Audio Amplifiers and Preamplifiers: Learn more

Product Name Notes
Analog Input Monaural Class-D Speaker Amplifier -- BD27400GUL BD27400GUL is a low voltage drive class-D monaural speaker amplifier that was developed for cellular telephones, mobile audio products and the others. The LC filter of the speaker output is...
9W+9W Analog Input Class D Speaker Amplifier -- BD28412MUV BD28412MUV is a 9W+9W stereo (or 18W monaural) class D amplifier, developed for battery equipped speaker systems such as wireless speakers. This IC is incorporated with a precise oscillator to...
17W+17W Class D Speaker Amplifier for Digital Input -- BD28623MUV BD28623MUV is a Class D Speaker Amplifier designed for Flat-panel TVs in particular for space-saving and low-power consumption. This IC delivers an output power of 20W + 20W. This IC...
Sound Processor for Car Audio with Built-in High-Voltage Amplifier and 2nd Order Post Filter -- BD37069FV-M BD37069FV-M is a sound processor developed for car audio with built-in selector of six stereo inputs and output interfaced to ADC after adjusting signal level. BD37069FV-M has a 6-channel volume...
Analog Input / BTL Output Class-D Speaker Amplifier -- BD5413EFV 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,...
Analog Input / BTL Output Class-D Speaker Amplifier -- BD5423AEFS 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...
Analog Input / BTL Output Class-D Speaker Amplifier -- BD5424EFS BD5424EFS is a 20W + 20W 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...
Analog Input / BTL Output Class-D Speaker Amplifier -- BD5426EFS BD5426EFS is a 10W + 10W 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...
Analog Input Monaural Class-D Speaker Amplifier -- BD5460GUL BD5460GUL is a low voltage drive class-D monaural speaker amplifier that was developed for cellular telephones, mobile audio products and the others. The LC filter of the speaker output is...
Analog Input Monaural Class-D Speaker Amplifier -- BD5461GUL BD5461GUL is a low voltage drive class-D monaural speaker amplifier that was developed for cellular telephones, mobile audio products and the others. The LC filter of the speaker output is...
Analog Input Monaural Class-D Speaker Amplifier -- BD5469GUL BD5469GUL is a monaural Class-D speaker amplifier that has integrated ALC function suitable for mobile phones, portable type electronic devices, etc. LC filter at the speaker output is not needed. The IC forms...
Analog Input Monaural Class-D Speaker Amplifier -- BD5632NUX BD5632NUX is a low voltage drive class-D monaural speaker amplifier that was developed for cellular telephones, mobile audio products and the others. The LC filter of the speaker output is...
Analog Input Monaural Class-D Speaker Amplifier -- BD5634NUX BD5634NUX is a low voltage drive class-D monaural speaker amplifier that was developed for cellular telephones, mobile audio products and the others. The LC filter of the speaker output is...
Analog Input Monaural Class-D Speaker Amplifier -- BD5638NUX BD5638NUX is a low voltage drive class-D monaural speaker amplifier that was developed for cellular telephones, mobile audio products and the others. The LC filter of the speaker output is...
1.2W Monaural Speaker Amplifier for Automotive -- BD78306EFJ-M BD78306EFJ-M is a Class-AB monaural speaker amplifier with 6dB voltage gain designed for automotive. BD783xxEFJ-M series includes 6dB to 26dB voltage gain products. Class-AB amplifiers have no requirements for care...
1.2W Monaural Speaker Amplifier for Automotive -- BD78308EFJ-M BD78308EFJ-M is a Class-AB monaural speaker amplifier with 8dB voltage gain designed for automotive. BD783xxEFJ-M series includes 6dB to 26dB voltage gain products. Class-AB amplifiers have no requirements for care...
1.1W to1.5W Monaural Speaker Amplifier -- BD7830NUV BD7830NUV is speaker amplifier IC for low-voltage drives and low power consumption audio, specialized for mobile telephones and other mobile audio devices.
1.2W Monaural Speaker Amplifier for Automotive -- BD78310EFJ-M BD78310EFJ-M is a Class-AB monaural speaker amplifier with 10dB voltage gain designed for automotive. BD783xxEFJ-M series includes 6dB to 26dB voltage gain products. Class-AB amplifiers have no requirements for care...
1.2W Monaural Speaker Amplifier for Automotive -- BD78312EFJ-M BD78312EFJ-M is a Class-AB monaural speaker amplifier with 12dB voltage gain designed for automotive. BD783xxEFJ-M series includes 6dB to 26dB voltage gain products. Class-AB amplifiers have no requirements for care...
1.2W Monaural Speaker Amplifier for Automotive -- BD78314EFJ-M BD78314EFJ-M is a Class-AB monaural speaker amplifier with 14dB voltage gain designed for automotive. BD783xxEFJ-M series includes 6dB to 26dB voltage gain products. Class-AB amplifiers have no requirements for care...
1.2W Monaural Speaker Amplifier for Automotive -- BD78316EFJ-M BD78316EFJ-M is a Class-AB monaural speaker amplifier with 16dB voltage gain designed for automotive. BD783xxEFJ-M series includes 6dB to 26dB voltage gain products. Class-AB amplifiers have no requirements for care...
1.2W Monaural Speaker Amplifier for Automotive -- BD78318EFJ-M BD78318EFJ-M is a Class-AB monaural speaker amplifier with 18dB voltage gain designed for automotive. BD783xxEFJ-M series includes 6dB to 26dB voltage gain products. Class-AB amplifiers have no requirements for care...
1.2W Monaural Speaker Amplifier for Automotive -- BD78320EFJ-M BD78320EFJ-M is a Class-AB monaural speaker amplifier with 20dB voltage gain designed for automotive. BD783xxEFJ-M series includes 6dB to 26dB voltage gain products. Class-AB amplifiers have no requirements for care...
1.2W Monaural Speaker Amplifier for Automotive -- BD78322EFJ-M BD78322EFJ-M is a Class-AB monaural speaker amplifier with 22dB voltage gain designed for automotive. BD783xxEFJ-M series includes 6dB to 26dB voltage gain products. Class-AB amplifiers have no requirements for care...
1.2W Monaural Speaker Amplifier for Automotive -- BD78324EFJ-M BD78324EFJ-M is a Class-AB monaural speaker amplifier with 24dB voltage gain designed for automotive. BD783xxEFJ-M series includes 6dB to 26dB voltage gain products. Class-AB amplifiers have no requirements for care...
1.2W Monaural Speaker Amplifier for Automotive -- BD78326EFJ-M BD78326EFJ-M is a Class-AB monaural speaker amplifier with 26dB voltage gain designed for automotive. BD783xxEFJ-M series includes 6dB to 26dB voltage gain products. Class-AB amplifiers have no requirements for care...
1.9W + 1.9W Stereo Speaker Amplifier -- BD7836EFV BD7836EFV is a low voltage drive class-AB stereo speaker amplifier, developed for note-book PC, desktop PC, portable devices and others. Class-AB amplifier has no EMI noise. Adopting power package realize...
80-mW Coupling Capacitorless Stereo Headphone Amplifier -- BD88400FJ BD88400FJ is an output coupling capacitorless headphone amplifier. This IC has a built-in regulated negative voltage generator type that generates the direct regulated negative voltage from the supply voltage. It...
Coupling Capacitorless Headphone Amplifier -- BD88200GUL
Coupling Capacitorless Headphone Amplifier -- BD88210GUL
Coupling Capacitorless Headphone Amplifier -- BD88215GUL
Coupling Capacitorless Headphone Amplifier -- BD88220GUL
Coupling Capacitorless Headphone Amplifier -- BD88400GUL
Coupling Capacitorless Headphone Amplifier -- BD88410GUL
Coupling Capacitorless Headphone Amplifier -- BD88415GUL
Coupling Capacitorless Headphone Amplifier -- BD88420GUL
BD88xxxGUL is output coupling capacitorless headphone amplifier. This IC has a negative voltage generator of regulated type built-in and generates the direct regulated negative voltage from the positive voltage. It...
Standard Headphone Amplifier -- BH3544F BH3544F is digital-source headphone amplifier. BH3544F has a fixed gain of 6 dB, so external gain setting is not needed. Mute function can make it easy to perform countermeasures to...
Standard Headphone Amplifier -- BH3547F BH3547F is digital-source headphone amplifier. BH3547F has a fixed gain of 6 dB, so external gain setting is not needed. Mute function can make it easy to perform countermeasures to...
Standard Headphone Amplifier -- BH3548F BH3548F is headphone amplifier suitable for portable products. BH3548F has a fixed gain of 6 dB, so external resistors for gain setting are not needed. Package of BH3548F is pin-to-pin...
17W+17W Full Digital Speaker Amplifier with built-in DSP -- BM28723AMUV BM28723AMUV is a 17W+17W Class D stereo Speaker Amplifier with built-in DSP designed for TVs specifically for space-saving and low-power consumption. BM28723AMUV features BCD (Bipolar, CMOS, DMOS) process technology to...
24bit Audio CODEC with Stereo Speaker Amplifier -- BU26156RFS BU26156RFS is Low Power Stereo Audio CODECs with built-in various acoustic effects. BU26156RFS has stereo line and monaural mic inputs that can input to 2Vrms, stereo speaker amplifier that can...
Headphone Amplifier Designed for 0.93V Low Voltage Operation -- BU7150NUV BU7150NUV is Audio Amplifier designed for Single-cell battery operated audio products (VDD = 0.93 ~ 3.5V, at Ta=0~85°C). BU7150NUV can be selected in single-ended mode for stereo headphone and BTL...
2W + 2W Stereo Speaker / Headphone Amplifier -- BH7881EFV The BH7881EFV is a low voltage drive, low noise, high output speaker / headphone amplifier in which a BiCMOS process is used. An on-chip speaker amplifier circuit that is capable...
1W + 1W Stereo Speaker / Headphone Amplifier -- BH7884EFV The BH7884EFV is a low voltage, low noise, high output speaker and headphone amplifier drive, in which a BiCMOS process is used. This IC supports : headphone amplifier gain adjustment,...
Analog Input Monaural Class-D Speaker Amplifier -- BD5465GUL
Analog Input Monaural Class-D Speaker Amplifier -- BD5466GUL
Analog Input Monaural Class-D Speaker Amplifier -- BD5467GUL
Analog Input Monaural Class-D Speaker Amplifier -- BD5468GUL
These monaural Class D speaker amps have ALC function, and are compatible with differential analog input, making them optimized for a wide variety of applications, from portable devices such as...
Ground Isolation Amplifier -- BA3121F
Ground Isolation Amplifier -- BA3123F
This IC is ground isolation amplifiers developed for use in car audio applications. This IC efficiently eliminates problems caused by wiring resistance, and removes noise generated by the electrical devices...