Overview of UDA1355H/N2 chip
UDA1355H/N2 is a high-performance audio decoder chip designed and manufactured by Philips. The chip is specially used for digital audio playback systems, especially for portable devices and consumer electronics. Its main function is to convert audio signals from digital sources into analog signals, so that users can enjoy high-quality audio experience.
Detailed parameters
UDA1355H/N2 has relatively rich parameters, covering its electrical characteristics and functional performance. Here are some key parameters:
1. Operating voltage: The operating voltage range of the chip is 3.0V to 5.5V, which is suitable for different power supply designs. 2. Sampling rate: It supports multiple sampling rates, including 32kHz, 44.1kHz, 48kHz and 96kHz, which makes it compatible with multiple audio formats.
3. Signal to noise ratio (SNR): The signal to noise ratio of the chip is up to 100dB, ensuring the clarity and fineness of audio output.
4. Total harmonic distortion (THD): The THD of this chip is lower than - 90dB, which means that the distortion of the audio signal is minimal and can provide high fidelity audio output.
5. Output type: UTA1355H/N2 has stereo analog audio output, which is suitable for the connection of headphones and audio amplifiers.
Manufacturer, packaging and packaging
UDA1355H/N2 chip is produced by Philips Semiconductor (now NXP Semiconductor). The chip usually adopts a variety of packaging styles, the most common is TQFP packaging, which can be easily installed on the circuit board. TQFP (Thin Quad Flat Package) packaging style has smaller size and higher pin density, which is suitable for the needs of modern electronic products.
In the market, UDA1355H/N2 is usually supplied in batch and decentralized forms to meet the needs of manufacturers and individual developers of different scales. Its storage and transportation usually adopt anti-static packaging to reduce the risk of damage to the chip.
Pin and circuit diagram description
The UDA1355H/N2 pin layout is very intuitive, which is convenient for users to conduct electrical connection and signal processing. Main pin functions include:
1. Power supply pin (VDD): used to power the chip.
2. Ground pin (GND): connect to the ground to provide stable working voltage.
3. Digital audio input pins (DOUT, DIN, etc.): These pins support the connection with other digital audio devices (such as DSP and MCU) to transmit digital audio signals.
4. Analog audio output pins (L_OUT, R_OUT): stereo output is used to connect headphones or amplifiers.
5. Control pins (MUTE, RESET, etc.): used to control the mute and reset functions of the chip, facilitating various audio applications.
The pin layout and connection mode of the chip are usually detailed in its data manual. The connection diagram provided by the circuit diagram can help designers better understand its working principle and electrical characteristics.
Use Cases
In practical applications, UDA1355H/N2 chips are mostly used in audio players, portable audio, digital TV and personal computers. The following are some specific use cases:
Portable audio player
In the portable audio player, UDA1355H/N2 can work with the main controller (such as MCU and DSP). The user selects the audio file through the UI interface of the player. The MCU converts the audio data into a suitable digital format and inputs it to UDA1355H/N2 through DIN pins. After the chip is decoded, it is output to the headphone jack through L_OUT and R_OUT, and users can enjoy high fidelity music.
digital television
Digital TV equipment will also use UDA1355H/N2 to process audio signals from various digital signal sources (such as satellite receivers, network streaming media, etc.). The chip can decode between different audio compression formats, and provide clear sound output, so as to enrich the viewing experience.
Car Audio System
UDA1355H/N2 can also play an important role in modern car audio systems. The car central control system sends audio data to UDA1355H/N2 through digital signals, and then the chip decodes and transmits the audio signal to the car audio system. Since the chip supports multiple sampling rates, it can be adapted to different sound sources to ensure the sound quality performance in the vehicle.
Home cinema system
In the home theater system, the chip can be used as a decoder to receive audio signals from Blu ray players and other devices to provide stereo experience. Through UDA1355H/N2, users can enjoy high-quality surround sound effects and improve the immersion of watching movies.
Through these practical cases, it is easy to see that UDA1355H/N2 chip is widely used in the field of audio decoding and processing, and its excellent performance also provides guarantees for various electronic products.
