Overview
The TAS5825PRHBR, produced by Texas Instruments, is a high-efficiency, closed-loop Class-D audio amplifier designed for stereo applications. It features the advanced Hybrid-Pro algorithm, which significantly enhances system efficiency and reduces heat without causing clipping distortion. This amplifier operates with a supply voltage (PVDD) range of 4.5 V to 26.4 V and supports digital input formats such as I2S, LJ, and TDM. The Hybrid-Pro algorithm anticipates audio power demand and adjusts the DC-DC converter accordingly, leading to improved battery life and reduced heat generation. The device is packaged in a compact 5 × 5 mm VQFN (32-pin) package, making it suitable for space-constrained applications.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| PVDD (Power Supply Voltage) | 4.5 | - | 26.4 | V |
| DVDD and I/O Voltage | 1.62 | - | 3.63 | V |
| Output Power (VPVDD = 19 V, RSPK = 3 Ω, THD+N = 1%) | - | - | 50 | W |
| Output Power (VPVDD = 22 V, RSPK = 4 Ω, THD+N = 1%) | - | - | 53 | W |
| Switching Frequency of Speaker Amplifier | 384 | - | 768 | kHz |
| Minimum Speaker Load (BTL Mode) | 3.2 | - | 4 | Ω |
| Minimum Speaker Load (PBTL Mode) | 1.6 | - | 2 | Ω |
| Total Harmonic Distortion and Noise (THD+N) | - | - | 0.03% | - |
| Dynamic Range (A-Weighted) | - | - | 109 | dB |
| Signal-to-Noise Ratio (SNR) (A-Weighted) | - | - | 109 | dB |
Key Features
- High-Efficiency Class-D Operation: Utilizes the Hybrid-Pro algorithm to enhance system efficiency and reduce heat.
- Flexible Processing Features: Includes 3-band advanced dynamic range compression (DRC) and automatic gain limiting (AGL), along with up to 4 ms lookahead delay buffer for audio signal tracking.
- Flexible Power Supply Configurations: Supports PVDD from 4.5 V to 26.4 V and DVDD/I/O voltages of 1.8 V or 3.3 V.
- Integrated Self-Protection: Features over-current error (OCE), cycle-by-cycle current limit, over-temperature warning (OTW), over-temperature error (OTE), and under/over-voltage lock-out (UVLO, OVLO).
- Easy System Integration: Includes I2C software control and a compact 5 × 5 mm VQFN package, reducing the need for bulky electrolytic capacitors and large inductors.
- Digital Audio Interface: Supports 3-wire digital audio interface in I2S, LJ, and TDM formats.
Applications
- Battery-Powered Speakers: Ideal for portable audio devices due to its high efficiency and extended battery life.
- Set-Top Boxes (STB): Suitable for audio systems in STBs where efficiency and heat management are critical.
- Soundbars and Subwoofers: Enhances audio quality and efficiency in home audio systems.
- Wireless or Bluetooth Speakers: Optimizes performance in wireless audio devices.
- Heat or Efficiency Sensitive Audio Systems: Recommended for applications where reducing heat and improving efficiency are paramount.
Q & A
- What is the operating voltage range of the TAS5825PRHBR?
The TAS5825PRHBR operates with a supply voltage (PVDD) range of 4.5 V to 26.4 V.
- What is the Hybrid-Pro algorithm, and how does it benefit the TAS5825PRHBR?
The Hybrid-Pro algorithm anticipates audio power demand and adjusts the DC-DC converter accordingly, leading to improved battery life and reduced heat generation.
- What digital audio formats does the TAS5825PRHBR support?
The TAS5825PRHBR supports I2S, LJ, and TDM digital audio formats.
- What are the key protection features of the TAS5825PRHBR?
The device features over-current error (OCE), cycle-by-cycle current limit, over-temperature warning (OTW), over-temperature error (OTE), and under/over-voltage lock-out (UVLO, OVLO).
- What is the typical output power of the TAS5825PRHBR?
The typical output power is up to 50 W at VPVDD = 19 V, RSPK = 3 Ω, and THD+N = 1%.
- What is the switching frequency of the speaker amplifier?
The switching frequency of the speaker amplifier is between 384 kHz and 768 kHz.
- What is the minimum speaker load for BTL mode?
The minimum speaker load for BTL mode is 3.2 Ω.
- What is the dynamic range of the TAS5825PRHBR?
The dynamic range is up to 109 dB (A-Weighted).
- What is the signal-to-noise ratio (SNR) of the TAS5825PRHBR?
The SNR is up to 109 dB (A-Weighted).
- What package type and size does the TAS5825PRHBR come in?
The device is packaged in a 5 × 5 mm VQFN (32-pin) package.
