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Introduction to ADAU1701:
The ADAU1701 is a powerful, all-in-one audio solution that integrates a 28/56-bit digital signal processor (DSP), ADCs, DACs, and a microcontroller-like control interface into a single chip. It offers advanced signal processing capabilities such as balance, mixing, bass enhancement, multi-band dynamic processing, delay compensation, and stereo image expansion. These features help overcome real-world limitations in speakers, amplifiers, and listening environments, ultimately delivering a more immersive and high-quality audio experience.
The signal processing in the ADAU1701 is comparable to that found in high-end audio equipment. Most of the processing occurs in full 56-bit double-precision mode, ensuring excellent performance even at low signal levels. As a fully programmable DSP, it allows users to customize their audio processing flow using SigmaStudio, a user-friendly graphical software. With SigmaStudio, you can easily configure filters, dynamics, level controls, and GPIO interfaces through a visual approach.
The ADAU1701 can be programmed either from an external microcontroller or via a serial EEPROM using its self-booting mechanism. Upon power-up, it can also store the current configuration back to the EEPROM, making it easy to recall settings for future use.
The device includes two ∑-Δ ADCs and four ∑-Δ DACs, offering a dynamic analog output with a 98.5 dB input range. Each ADC has a THD + N of -83 dB, while each DAC achieves -90 dB. The digital I/O ports support seamless integration with other ADCs and DACs without requiring additional glue logic. Communication is handled through I2C or a 4-wire SPI port, providing flexibility in system design.
Key Features and Advantages:
- 28-/56-bit, 50 MIPS digital audio processor
- 2 ADCs: SNR 100 dB, THD + N: -83 dB
- 4 DACs: SNR 104 dB, THD + N: -90 dB
- Fully independent operation
- Auto-boot from serial EEPROM
- Auxiliary ADC with 4 input multiplexers for analog control
- General-purpose GPIO for digital control and output
- Fully programmable SigmaStudioâ„¢ tool
- 28 x 28 bit multiplier with 56-bit accumulator for full double precision
- Crystal-based clock oscillator with PLL support (64x to 512x fS)
- I2S-compatible, flexible serial data I/O ports (left/right-aligned and TDM modes)
- Supports up to 192 kHz sampling rate
- Built-in 3.3V voltage regulator
- 48-pin plastic LQFP package
Chip Pin Diagram:
USB Charger refers to a device designed to provide power and charge electronic devices through a USB interface. It typically plugs into an AC outlet or another USB port and delivers electrical energy to connected devices via a USB cable.
Main Types
Standard USB Chargers: Plug directly into AC outlets and charge devices through USB ports.
Car USB Chargers: Mounted in a vehicle's cigarette lighter socket, providing charging capabilities for in-car electronic devices.
Quick Charge USB Chargers: Support fast charging technologies like Quick Charge (QC) or Power Delivery (PD), enabling devices to charge more rapidly.
Market Landscape and Trends
Current Market Status: With the proliferation of electronic devices and advancements in fast charging technology, the demand for USB Chargers continues to grow. Consumers have a wide range of brands, models, and features to choose from.
Future Trends: USB Chargers are evolving to prioritize charging efficiency, safety, and portability. Fast charging technologies will see wider adoption, while the development of wireless charging may lead to the emergence of wireless USB Charging solutions as a new market trend.
August 07, 2025