仕様
| 属性 | 値 |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Obsolete |
| Type | Audio |
| Resolution(Bits) | 24 b |
| Number of AD Cs / DA Cs | 1 / 1 |
| Sigma Delta | Yes |
| S / N Ratio AD Cs / DA Cs(db)Typ | 94 / 98 |
| Voltage - Supply, Analog | 2.5V ~ 3.6V |
| Voltage - Supply, Digital | 1.71V ~ 3.6V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
概要
Description
The WM8974CGEFL/RV is an audio codec designed by Wolfson Microelectronics, commonly used in portable audio applications. It integrates several audio processing features and provides high-quality audio playback and recording capabilities. The device supports stereo audio conversion with its integrated digital-to-analog (DAC) and analog-to-digital converters (ADC).
Key features include programmable audio interface formats, digital filters, and support for various audio sample rates. The WM8974CGEFL/RV also incorporates a headphone driver and speaker driver, which can directly drive headphones or small speakers, eliminating the need for external amplifiers. The codec provides volume control, mute, and a microphone input path with programmable pre-amplification.
Power management is a crucial feature, as the WM8974CGEFL/RV can operate at low power levels, making it suitable for battery-powered devices. The device uses a flexible clocking scheme that supports a wide range of input frequencies. Its compact package and integration of multiple functions make it ideal for mobile phones, portable media players, and other handheld devices.
Key features include programmable audio interface formats, digital filters, and support for various audio sample rates. The WM8974CGEFL/RV also incorporates a headphone driver and speaker driver, which can directly drive headphones or small speakers, eliminating the need for external amplifiers. The codec provides volume control, mute, and a microphone input path with programmable pre-amplification.
Power management is a crucial feature, as the WM8974CGEFL/RV can operate at low power levels, making it suitable for battery-powered devices. The device uses a flexible clocking scheme that supports a wide range of input frequencies. Its compact package and integration of multiple functions make it ideal for mobile phones, portable media players, and other handheld devices.
Equivalent
The WM8974CGEFL/RV is a low-power, high-quality stereo codec chip. Equivalent products might include:
1. Texas Instruments TLV320AICxx series - These are also low-power stereo codecs with similar features.
2. Analog Devices ADAU1772 - Offers low-power audio codec functionality.
3. Cirrus Logic CS42L42 - A low-power, stereo codec suitable for mobile applications.
4. Maxim Integrated MAX98357A - Although primarily a DAC, it might serve similar use cases depending on specific requirements.
Always check specific features to ensure compatibility.
1. Texas Instruments TLV320AICxx series - These are also low-power stereo codecs with similar features.
2. Analog Devices ADAU1772 - Offers low-power audio codec functionality.
3. Cirrus Logic CS42L42 - A low-power, stereo codec suitable for mobile applications.
4. Maxim Integrated MAX98357A - Although primarily a DAC, it might serve similar use cases depending on specific requirements.
Always check specific features to ensure compatibility.
Features
The WM8974CGEFL/RV is a low-power, high-quality stereo audio codec designed for portable applications. Here are its key features:
1. Audio Performance: It offers a high signal-to-noise ratio (SNR) with low total harmonic distortion (THD), making it suitable for high-fidelity audio playback and recording.
2. Power Management: The codec includes efficient power management features, supporting low power consumption suitable for battery-operated devices.
3. Integrated Components: It incorporates a headphone driver, microphone preamplifier, and a line input, reducing the need for additional external components in a design.
4. Digital Interface: The codec supports I²S and PCM audio data interfaces, facilitating easy integration with a variety of digital processors.
5. Analog Interfaces: It provides stereo input and output interfaces, including differential inputs, which enhance noise immunity.
6. Control Interface: Equipped with an I²C/SPI control interface, it allows for detailed configuration and control.
7. Sampling Rates: Supports a wide range of sampling rates, making it versatile for different audio applications.
These features make the WM8974CGEFL/RV suitable for mobile phones, digital audio players, and other portable devices.
1. Audio Performance: It offers a high signal-to-noise ratio (SNR) with low total harmonic distortion (THD), making it suitable for high-fidelity audio playback and recording.
2. Power Management: The codec includes efficient power management features, supporting low power consumption suitable for battery-operated devices.
3. Integrated Components: It incorporates a headphone driver, microphone preamplifier, and a line input, reducing the need for additional external components in a design.
4. Digital Interface: The codec supports I²S and PCM audio data interfaces, facilitating easy integration with a variety of digital processors.
5. Analog Interfaces: It provides stereo input and output interfaces, including differential inputs, which enhance noise immunity.
6. Control Interface: Equipped with an I²C/SPI control interface, it allows for detailed configuration and control.
7. Sampling Rates: Supports a wide range of sampling rates, making it versatile for different audio applications.
These features make the WM8974CGEFL/RV suitable for mobile phones, digital audio players, and other portable devices.
Pinout
The WM8974CGEFL/RV is a low-power stereo codec with integrated headphone driver, primarily used in portable audio applications. It typically comes in a 28-pin package. The functions of the WM8974CGEFL/RV include stereo audio DAC and ADC, microphone preamplifier, and a headphone driver. The device supports various audio input and output configurations, making it suitable for devices requiring high-quality audio playback and recording capabilities.
Key features include support for different sample rates, digital filters, and programmable audio interface formats. It also provides features like digital volume control, bass and treble adjustment, and a 3D audio enhancement function. The integration of a headphone driver reduces the need for external components, thus enabling a more compact design in portable devices. The WM8974CGEFL/RV is often used in consumer electronics such as MP3 players, smartphones, and other handheld devices.
Key features include support for different sample rates, digital filters, and programmable audio interface formats. It also provides features like digital volume control, bass and treble adjustment, and a 3D audio enhancement function. The integration of a headphone driver reduces the need for external components, thus enabling a more compact design in portable devices. The WM8974CGEFL/RV is often used in consumer electronics such as MP3 players, smartphones, and other handheld devices.
Manufacturer
The WM8974CGEFL/RV is manufactured by Cirrus Logic. Cirrus Logic is a semiconductor company that specializes in analog, mixed-signal, and audio DSP integrated circuits (ICs). They are known for providing solutions for audio and voice signal processing applications, often used in consumer electronics, automotive, and industrial markets. The company's expertise lies in developing high-performance audio converters, codecs, and amplifiers, which are integral in enhancing audio quality in various devices such as smartphones, tablets, and home entertainment systems.
Application
The WM8974CGEFL/RV is a low-power, high-quality stereo audio codec often used in portable audio applications. Key application areas include smartphones, tablets, portable media players, and handheld gaming devices. It is also utilized in devices requiring high-quality audio input and output without consuming significant power, such as digital voice recorders and other battery-operated audio equipment. The codec supports various audio formats, making it versatile for devices needing efficient audio processing capabilities.
Package
The WM8974CGEFL/RV is an audio codec with a compact package type known as W-CSP (Wafer-Level Chip-Scale Package), which is ideal for space-constrained applications. Its small size allows integration into various portable electronic devices.
