概要

The BH1415F-E2 is an RF transmitter integrated circuit (IC) produced by ROHM Semiconductor, specifically designed for FM stereo transmission applications. Encased in a compact 22-SOIC package, this versatile IC combines a stereo modulator and an FM transmitter, facilitating high-quality audio broadcast over FM frequencies. The device’s internal architecture includes advanced features like a Phase-Locked Loop (PLL) system, pre-emphasis, limiting, and filtering circuits that enhance sound quality and ensure stable transmission frequencies, making it suitable for use in car stereos, wireless speakers, and gaming consoles. Notable for its role in consumer electronics, the BH1415F-E2 builds upon key technological advancements in the semiconductor industry. The development of the Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) by Mohamed M. Atalla and Dawon Kahng in 1959, and the planar process by Jean Hoerni, were pivotal in enabling the creation of high-density integrated circuits like the BH1415F-E2. These innovations have allowed for the integration of multiple components onto a single silicon substrate, significantly reducing the size and complexity of electronic devices. The BH1415F-E2’s robust design and advanced capabilities have positioned it as a preferred choice in various applications requiring reliable FM stereo transmission. From car audio systems to wireless communication in consumer electronics, the IC’s ability to maintain stable frequencies and high audio quality underscores its importance in modern technology. Furthermore, its energy-efficient CMOS technology and precise frequency modulation make it a cost-effective solution for high-performance electronic applications. Despite its many advantages, the BH1415F-E2, like other semiconductors, comes with certain limitations and responsibilities for users. Content related to the IC is provided “as is,” without warranties of accuracy, reliability, or uninterrupted availability. Users must verify information independently and assume all associated risks. Nonetheless, the BH1415F-E2 remains a critical component in the advancement of wireless communication technologies, reflecting the ongoing evolution and impact of semiconductor devices in various sectors.

背景

The BH1415F-E2 is an RF transmitter IC produced by ROHM Semiconductor, categorized under RF transmitters and packaged in a 22-SOIC case format with a width of 5.4mm

. This integrated circuit is used for FM stereo transmission and contains both a stereo modulator and FM transmitter within the chip. The stereo modulator generates a composite stereo signal from the main, sub, and pilot signals originating from a 38kHz oscillator. The FM transmitter then modulates this composite signal onto a carrier frequency for broadcast . The chip’s functionality is enhanced by several features, including pre-emphasis, limiting, and filtering circuits to improve sound quality, as well as a Phase-Locked Loop (PLL) system to maintain stable transmission frequencies. These characteristics make the BH1415F-E2 suitable for applications such as car stereos, wireless speakers, and game consoles . The development of integrated circuits like the BH1415F-E2 builds on a rich history of semiconductor advancements. Key milestones in this history include the invention of the Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) by Mohamed M. Atalla and Dawon Kahng in 1959, which revolutionized the ability to build high-density integrated circuits . The planar process, developed by Jean Hoerni, further enhanced semiconductor manufacturing by addressing reliability issues in earlier transistor designs . These technological advances paved the way for modern IC chips that integrate multiple components onto a single silicon substrate, drastically reducing the size and complexity of electronic devices .

仕様

The BH1415F-E2 is a product offered by Chipdigger.com, a professional distributor of electronic components with a substantial inventory, including over 250,000 part numbers ready for immediate delivery

. The specific details regarding price and lead time for the BH1415F-E2 depend on the quantity required, availability, and warehouse location. Potential buyers are encouraged to contact sales representatives to obtain pricing and delivery information, ensuring they receive competitive offers and timely shipments. The BH1415F-E2 is likely used in applications that involve integrated circuits (ICs) and their functionalities, such as signal processing, memory storage, or data conversion. Integrated circuits like the BH1415F-E2 are integral to modern electronics, often found in aerospace systems due to their size, weight, and power efficiency advantages over discrete transistor designs. Advanced packaging techniques, including 2.5D and 3D configurations, are used to enhance performance and reduce the size of these ICs, which might be relevant to the design of the BH1415F-E2. Buyers can procure the BH1415F-E2 with confidence, backed by a one-year warranty from Chipdigger.com, establishing the product’s reliability and the distributor’s commitment to customer satisfaction. This assurance, coupled with Chipdigger’s capacity to handle large volumes of electronic components, makes the BH1415F-E2 a viable option for various applications requiring integrated circuits.

 

内部アーキテクチャ

The BH1415F is an FM stereo transmitter IC that incorporates a stereo modulator and an FM transmitter to deliver high-quality audio transmission. The internal architecture is designed to generate and transmit FM stereo signals with a stable frequency and enhanced sound quality, making it suitable for a variety of applications such as car audio systems, wireless speakers, and game consoles

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Stereo Modulator

The stereo modulator within the BH1415F generates a composite signal that includes MAIN, SUB, and pilot signals derived from a 38kHz oscillator. This composite signal is essential for creating the stereo effect required for FM broadcasting. The stereo modulator features a built-in pilot-tone system to maintain the accuracy and integrity of the stereo signal

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FM Transmitter

The FM transmitter section modulates the carrier signal with the composite signal generated by the stereo modulator. This modulation process enables the IC to broadcast FM waves over the air. The transmitter is equipped with a Phase-Locked Loop (PLL) system that ensures stable transmission frequency, reducing the likelihood of frequency drift and ensuring consistent signal quality

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Sound Quality Enhancement Circuits

To improve the overall timbre and audio quality, the BH1415F includes several sound enhancement circuits. These include a pre-emphasis circuit, a limiter circuit, and a low-pass filter circuit. The pre-emphasis circuit boosts the higher frequency components of the audio signal, compensating for high-frequency loss during transmission. The limiter circuit helps to prevent signal distortion by restricting the amplitude of the signal, and the low-pass filter circuit eliminates high-frequency noise, further enhancing the clarity of the transmitted audio

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Data Input and Control

The IC allows for serial input of PLL data, which includes Control Enable (CE), Clock (CK), and Data (DA) signals. This capability provides precise control over the transmitter’s frequency settings, enabling users to configure the transmission characteristics according to their specific requirements

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アプリケーション

The BH1415F-E2 from Rohm Semiconductor is utilized across various domains due to its versatility and high performance.

家電

The BH1415F-E2 is also employed in numerous consumer electronics applications.

• Television and Audio Equipment: It supports devices such as digital televisions, audio amplifiers, and audio codecs.
• モバイル機器: This IC is crucial in smartphones, tablets, and wearables, enhancing their performance and functionality.
• Digital Cameras and Camcorders: The IC aids in image and video capture and processing, contributing to higher quality and more efficient operations in these devices.

Autonomous Driving and Intelligent Transportation

Integrated circuits (ICs), such as the BH1415F-E2, play a critical role in autonomous driving and intelligent transportation systems. These systems require advanced vehicle perception, decision-making, and control capabilities to provide safer, more efficient, and intelligent transportation solutions

.

 

Automotive Electronics and Industrial Control

In automotive electronics, the BH1415F-E2 is used in the Electronic Control Units (ECUs) for vehicle engine management, braking systems, and safety systems

. Additionally, in industrial automation and control systems, it facilitates sensor interfaces, motor control, and data acquisition and processing, thereby boosting efficiency and reliability in various industrial applications.

 

Medical Devices and Biotechnology

The BH1415F-E2 is instrumental in medical devices and biotechnology. It is used in medical sensors and monitoring equipment for vital signs monitoring, blood sugar measurement, and electrocardiograms

. Moreover, it is a vital component in medical imaging equipment such as ultrasonic devices, X-ray machines, and nuclear magnetic resonance imaging (MRI) systems.

 

Digital Processing and Logic Functions

The BH1415F-E2 is adept at handling digital processing and logic functions. It implements Boolean logic operations through logic gate circuits, counts and stores data using counters and registers, and provides memory functionalities including static random access memory (SRAM) and dynamic random access memory (DRAM)

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Data Conversion and Signal Processing

Analog-to-digital converters (ADCs) and digital-to-analog converters (DACs) are essential for converting signals between analog and digital forms. The BH1415F-E2 is capable of performing these conversions, making it invaluable in systems that require precise data conversion and signal processing

. The wide range of applications demonstrates the BH1415F-E2’s versatility and importance across different sectors, significantly contributing to advancements in technology and improving the performance and efficiency of various systems.

 

特徴

The BH1415F-E2 Rohm Semiconductor is a highly versatile device with a multitude of applications in electronic systems. One of its key features is the integration of circuit diagrams which are instrumental in explaining the operation of various semiconductor devices, such as resistors, capacitors, integrated circuits, LEDs, and connectors

. Notably, the BH1415F-E2 incorporates several innovative design elements. Meandering stripes of varying lengths are used to form on-chip resistors, and in some instances, inductive structures are built as tiny on-chip coils or simulated by gyrators. Additionally, its design significantly reduces power consumption, particularly by leveraging CMOS technology, which consumes less current than bipolar junction transistor devices since it only draws current during logic state transitions. The device also supports sophisticated frequency modulation (FM) and frequency-shift keying (FSK) demodulation capabilities. The VCO tracks the instantaneous frequency of the input signal for FM demodulation, while for FSK, it shifts between preset frequencies to transmit binary data. Moreover, the BH1415F-E2 excels in recovering small signals from noise and extracting clock timing information from data streams, enhancing its utility in data communication and computer peripherals. Its advanced design includes a phase-locked loop (PLL) system, which offers frequency multiplication by locking the VCO output to the Nth harmonic of the reference signal. This feature is particularly useful when the reference frequency is constrained by other factors. Furthermore, the PLL system minimizes reference frequency energy ripple at the phase detector output, ensuring the stability and purity of the output signal. These capabilities make the BH1415F-E2 a reliable and efficient component in various electronic applications.

アプリケーション

The BH1415F-E2 from Rohm Semiconductor is utilized across various domains due to its versatility and high performance.

家電

The BH1415F-E2 is also employed in numerous consumer electronics applications.

• Television and Audio Equipment: It supports devices such as digital televisions, audio amplifiers, and audio codecs.
• モバイル機器: This IC is crucial in smartphones, tablets, and wearables, enhancing their performance and functionality.
• Digital Cameras and Camcorders: The IC aids in image and video capture and processing, contributing to higher quality and more efficient operations in these devices.

Autonomous Driving and Intelligent Transportation

Integrated circuits (ICs), such as the BH1415F-E2, play a critical role in autonomous driving and intelligent transportation systems. These systems require advanced vehicle perception, decision-making, and control capabilities to provide safer, more efficient, and intelligent transportation solutions

.

 

Automotive Electronics and Industrial Control

In automotive electronics, the BH1415F-E2 is used in the Electronic Control Units (ECUs) for vehicle engine management, braking systems, and safety systems

. Additionally, in industrial automation and control systems, it facilitates sensor interfaces, motor control, and data acquisition and processing, thereby boosting efficiency and reliability in various industrial applications.

 

Medical Devices and Biotechnology

The BH1415F-E2 is instrumental in medical devices and biotechnology. It is used in medical sensors and monitoring equipment for vital signs monitoring, blood sugar measurement, and electrocardiograms

. Moreover, it is a vital component in medical imaging equipment such as ultrasonic devices, X-ray machines, and nuclear magnetic resonance imaging (MRI) systems.

 

Digital Processing and Logic Functions

The BH1415F-E2 is adept at handling digital processing and logic functions. It implements Boolean logic operations through logic gate circuits, counts and stores data using counters and registers, and provides memory functionalities including static random access memory (SRAM) and dynamic random access memory (DRAM)

.

 

Data Conversion and Signal Processing

Analog-to-digital converters (ADCs) and digital-to-analog converters (DACs) are essential for converting signals between analog and digital forms. The BH1415F-E2 is capable of performing these conversions, making it invaluable in systems that require precise data conversion and signal processing

. The wide range of applications demonstrates the BH1415F-E2’s versatility and importance across different sectors, significantly contributing to advancements in technology and improving the performance and efficiency of various systems.

 

ピン構成と機能

The BH1415F-E2 by Rohm Semiconductor is a PLL-based FM transmitter IC that has various pin configurations crucial for its operation. Specific circuit configurations, especially around pin 9 and the PLL section, are vital for the optimal functioning of the device, though the best configuration may vary based on user requirements and application scenarios

. A common query among users is determining the best circuit configuration for these pins, as there are multiple documented configurations with differing impacts on performance. One configuration involves lifting pin 5 and injecting a 1kHz tone, although this configuration did not yield satisfactory results in some tests, showing poor spectral performance even with additional supply filtering applied to pins 8 and 12. The BH1415F-E2’s circuit diagrams typically feature connections between various components such as resistors, capacitors, and LEDs, with integrated circuits U2 and U4 playing key roles. However, the overall purpose and function of these connections often remain unspecified in the diagrams, leaving some ambiguity in the exact role of each pin configuration. Further testing with other PLL transmitter ICs revealed that comparable models, like the NS741, also performed poorly. High-performing alternatives, such as certain “SiS” parts available only in surface-mount packages, were noted but are hard to obtain. Consequently, building an efficient PLL exciter requires precise assembly and quality components, underscoring the importance of following well-documented configurations or purchasing reliable kits like those from NRG in New Zealand for those less experienced in RF gear construction.

 

メリット

Integrated circuits (ICs) offer several significant advantages over circuits constructed out of discrete components, including size, cost, and performance. The compact nature of ICs results from the photolithographic process, which allows entire chips with all their components to be printed as a unit, rather than being constructed one transistor at a time. This reduces both the size and the material usage compared to discrete circuits, making ICs highly efficient in terms of space and resources

. From a cost perspective, ICs are much cheaper to produce when manufactured in large volumes. The economies of scale achieved through mass production make ICs a cost-effective solution for a wide range of electronic applications. Moreover, the high initial costs of designing and setting up production for ICs are justified by the substantial savings realized in high-volume manufacturing . Performance is another crucial advantage of ICs. The components within an IC switch rapidly and consume less power due to their small size and close proximity. This results in high-performance circuits that are both energy-efficient and capable of operating at high speeds . The advanced packaging techniques such as 2.5D and 3D packaging further enhance performance by allowing multiple dies to be integrated into a single package, reducing the need for larger transistors and contributing to overall efficiency . Additionally, ICs have revolutionized the electronics industry by providing reliable and standardized building blocks for circuit design. Their mass production capability ensures consistent quality and performance, which is critical for applications in computers, mobile phones, and other home appliances that form the backbone of modern society . The versatility of ICs extends to specialized applications, including light-sensitive charge-coupled devices used in digital cameras and cellphones, further demonstrating their broad utility and impact .

 

制限事項

The use of the BH1415F-E2 from Rohm Semiconductor is governed by several limitations regarding the accuracy, reliability, and liability of the provided content. The content is made available on an “as is” basis, with no warranties concerning its security, uninterrupted availability, or error-free nature. No warranties, whether express or implied, are provided regarding the content’s accuracy or reliability, including but not limited to implied warranties of merchantability, non-infringement of third-party proprietary rights, and fitness for a particular purpose

. Users of the content assume all responsibility and risk associated with its use, as well as with the general use of the website and the internet. To the maximum extent permitted by law, neither EMA nor its suppliers shall be liable for any consequential, indirect, incidental, special, or other damages arising from the use or inability to use the content. This includes, but is not limited to, damages for loss of business profits, business interruption, loss of business information, or other pecuniary loss, even if EMA has been advised of the possibility of such damages. Moreover, EMA’s total liability in connection with the use of the content and any accompanying items shall not exceed the subscription fee paid for access to the content in the last 365 days. Although the content is believed to be accurate, complete, and current, no warranty is made regarding its accuracy, completeness, or currency. Users are granted a nonexclusive and nontransferable right to use the content solely for the purpose of downloading and using it within ECAD, PCB, and MCAD systems for the design of electronic circuits, PC boards, or other systems. Any other use of the content is prohibited. It is the user’s responsibility to verify any information before relying on it, as the content may include technical inaccuracies or typographical errors. Changes to the content may be made at any time and without notice.

Related Products

The BH1415F-E2 RF transmitter by ROHM Semiconductor is part of a family of semiconductors that are integral to various wireless communication applications. Similar products in this category offer varying specifications and capabilities suitable for different needs. One notable related product is the Stratix 10 device from Altera, which offers a sophisticated solution for high-performance computing applications. This device is built to handle complex algorithms and data processing tasks in a range of industries

. Additionally, the Stratix 10 supports advanced wireless communication protocols, making it a valuable complement to RF transmitters like the BH1415F-E2. Another related product in the realm of semiconductor devices is the dual-band CMOS MIMO Radio SoC for IEEE 802.11n Wireless LAN by IEEE. This system-on-chip (SoC) integrates multiple radio channels, enabling simultaneous multi-band wireless communication. Its advanced CMOS technology makes it a high-efficiency option for applications requiring robust and reliable wireless connectivity. Furthermore, products such as the 16nm/14nm FinFETs represent the cutting edge of semiconductor technology. These transistors enable enhanced performance and energy efficiency in electronic devices, including RF transmitters and other wireless communication components. FinFET technology is pivotal in pushing the boundaries of what can be achieved in integrated circuits, providing higher speeds and better thermal performance. In terms of semiconductor materials, gallium arsenide (GaAs) and gallium phosphide (GaP) are commonly used in conjunction with RF transmitters for their superior electronic properties. These materials support both n-type and p-type doping, allowing for precise control over electrical characteristics essential for high-frequency signal transmission. The BH1415F-E2 itself is designed to operate within a frequency range of 70MHz to 120MHz, utilizing a surface-mount antenna in a compact 22-SOIC package. Its power supply range of 4V to 6V, along with low power consumption of around 25mA, makes it an efficient choice for various applications. The chip’s ability to maintain a high channel separation of 40dB ensures excellent audio quality, which is crucial for stereo FM transmission.