PCM2705
16-bit stereo USB audio DACs in 28-pin SSOP format
Manufacturer： ['analog-devices', 'rochester', 'ti']
series introduction
# PCM2705 Product Series Introduction
## 1. Overview
The PCM2705 product series is a remarkable line of integrated circuits developed by Texas Instruments, specifically designed for audio applications. These devices play a crucial role in bridging the digital and analog audio worlds, offering high - quality audio conversion and interface capabilities. With their compact design and advanced features, they are widely used in a variety of consumer and professional audio products.
## 2. Key Features
### 2.1 USB Audio Interface
- **Plug - and - Play Compatibility**: The PCM2705 series is equipped with a USB audio interface that supports plug - and - play functionality. This means that when connected to a host device such as a computer, it can be recognized immediately without the need for complex driver installations in most cases. This simplifies the user experience, making it accessible for both novice and experienced users.
- **High - Speed Data Transfer**: It can handle high - speed USB data transfer, ensuring that audio data can be transmitted quickly and accurately from the host device to the PCM2705. This is essential for delivering smooth and uninterrupted audio playback, especially for high - resolution audio formats.
### 2.2 Audio Conversion
- **High - Quality DAC**: The series features a high - performance Digital - to - Analog Converter (DAC). It can convert digital audio signals into analog signals with excellent fidelity. The DAC has a high signal - to - noise ratio (SNR), which means it can reproduce audio with very low background noise, resulting in clear and detailed sound.
- **Multiple Sampling Rates**: It supports a wide range of sampling rates, including 44.1 kHz, 48 kHz, 96 kHz, and 192 kHz. This flexibility allows it to work with different audio sources and formats, whether it's standard CD - quality audio or high - resolution audio files.
### 2.3 Low Power Consumption
- **Energy - Efficient Design**: The PCM2705 is designed with low power consumption in mind. This is particularly important for portable audio devices, as it helps to extend the battery life. Even in continuous operation, the power consumption remains relatively low, making it an ideal choice for battery - powered applications such as portable media players and USB audio adapters.
### 2.4 Integrated Headphone Amplifier
- **Built - in Amplification**: Some models in the PCM2705 series come with an integrated headphone amplifier. This eliminates the need for an external amplifier, reducing the overall component count and cost of the audio system. The headphone amplifier can provide sufficient power to drive a variety of headphones, delivering high - quality audio directly to the user.
## 3. Applications
### 3.1 USB Audio Adapters
- **Enhancing Computer Audio**: PCM2705 - based USB audio adapters are widely used to improve the audio quality of computers. They can be easily connected to a computer's USB port, providing a high - quality audio output for music playback, video watching, and gaming. These adapters are also useful for computers with limited built - in audio capabilities.
### 3.2 Portable Media Players
- **Compact Audio Solutions**: In portable media players, the PCM2705 series offers a compact and efficient audio conversion solution. Its low power consumption and high - quality audio output make it suitable for devices that need to provide long - lasting battery life and excellent sound quality, such as MP3 players and portable music streamers.
### 3.3 Digital Audio Recorders
- **Accurate Audio Capture and Playback**: For digital audio recorders, the PCM2705 can be used for both audio capture and playback. It can accurately convert the analog audio signals from the microphone into digital data during recording and then
Images for reference
28-SOIC
28-SSOP Pkg
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