Overview
The AD1954YSTZ from Analog Devices Inc. is a comprehensive 26-bit single-chip 3-channel digital audio playback system. It integrates advanced DSP functionality, including speaker equalization, dual-band compression/limiting, delay compensation, and image enhancement. This chip is designed to enhance audio quality by compensating for the real-world limitations of speakers, amplifiers, and listening environments, similar to high-end studio equipment. The signal processing is performed in full 48-bit double-precision mode, ensuring excellent low-level signal performance and the absence of limit cycles or idle tones. The AD1954YSTZ features ADI’s patented multibit sigma-delta DAC architecture, providing a high SNR of 112 dB and a THD+N of –100 dB, making it suitable for applications ranging from low-end consumer electronics to high-end professional audio systems.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | AD1954YSTZ |
| Package | 48-Lead LQFP (7mm x 7mm) |
| Number of Channels | 3 |
| Resolution | 26 bits |
| Maximum Clock Frequency | 12.288 MHz |
| Interfaces | I2S, SPI, Serial |
| Polarity | Bipolar |
| SNR | 112 dB |
| THD+N | –100 dB |
| Operating Temperature | –40°C to +105°C |
Key Features
- Advanced DSP functionality for speaker equalization, dual-band compression/limiting, delay compensation, and image enhancement.
- Full 48-bit double-precision signal processing for excellent low-level signal performance.
- ADI’s patented multibit sigma-delta DAC architecture providing high SNR and low THD+N.
- Click-free parameter updates via an extensive SPI port with read-back capability.
- Digital output for use as a pure DSP or to drive an external DAC for extended channel capability.
- Support for default signal processing programs or custom user-designed programs using graphical programming tools from ADI.
Applications
The AD1954YSTZ is versatile and can be used in a wide range of audio applications, including:
- Low-end consumer electronics such as boom boxes and portable audio devices.
- High-end professional audio systems for mixing and editing.
- Automotive audio systems.
- Home theater systems.
- Public address systems.
Q & A
- What is the primary function of the AD1954YSTZ?
The AD1954YSTZ is a 26-bit single-chip 3-channel digital audio playback system with integrated DSP functionality for enhancing audio quality.
- What type of DAC architecture does the AD1954YSTZ use?
The AD1954YSTZ uses ADI’s patented multibit sigma-delta DAC architecture.
- What is the SNR and THD+N of the AD1954YSTZ?
The SNR is 112 dB, and the THD+N is –100 dB.
- What interfaces does the AD1954YSTZ support?
The AD1954YSTZ supports I2S, SPI, and Serial interfaces.
- Can the AD1954YSTZ be used with custom signal processing programs?
- What is the operating temperature range of the AD1954YSTZ?
The operating temperature range is –40°C to +105°C.
- What is the package type and size of the AD1954YSTZ?
The package type is 48-Lead LQFP, and the size is 7mm x 7mm.
- What is the maximum clock frequency of the AD1954YSTZ?
The maximum clock frequency is 12.288 MHz.
- Can the AD1954YSTZ be used purely as a DSP?
- What are some typical applications of the AD1954YSTZ?
Typical applications include low-end consumer electronics, high-end professional audio systems, automotive audio systems, home theater systems, and public address systems.
