Overview
The TAS5805M is a high-efficiency, stereo, closed-loop Class-D amplifier produced by Texas Instruments. It offers a cost-effective digital-input solution with low power dissipation and advanced sound enrichment. The device features an integrated audio processor and a 96 kHz architecture, supporting advanced audio process flows including sample rate conversion (SRC), 15 band equalizers (BQs) per channel, volume control, audio mixing, and multi-band dynamic range compression (DRC) and automatic gain limiting (AGL).
Key Specifications
| Specification | Value |
|---|---|
| Package | HTSSOP (PWP), 28 pins |
| Operating Temperature Range | -25°C to 85°C |
| Output Power | 2 × 23 W in 2.0 Mode (8-Ω, 21 V, THD+N=1%), 45 W in Mono Mode (4-Ω, 21 V, THD+N=1%) |
| Total Harmonic Distortion + Noise (THD+N) | ≤ 0.03% at 1 W, 1 kHz, PVDD = 12 V |
| Signal-to-Noise Ratio (SNR) | ≥ 107 dB (A-weighted), Noise Level < 40 µV RMS |
| Quiescent Current | 16.5 mA at PVDD = 13.5 V |
| Power Supply Range | PVDD: 4.5 V to 26.4 V, DVDD and I/O: 1.8 V or 3.3 V |
| Sample Rates | 32, 44.1, 48, 88.2, 96 kHz |
Key Features
- Supports multiple output configurations: stereo and mono modes.
- Excellent audio performance with low THD+N and high SNR.
- Low quiescent current with Hybrid Modulation, extending battery life in portable applications.
- Flexible power supply configurations and audio I/O options (I2S, LJ, RJ, TDM, 3-Wire Digital Audio Interface).
- Enhanced audio processing: multi-band DRC, AGL, thermal foldback, DC blocking, input mixer, output crossbar, and level meter.
- Integrated self-protection features: over-current error, over-temperature warning/error, under/over-voltage lock-out.
- I2C software control for easy system integration and reduced solution size.
- Inductor-less operation using ferrite beads for most cases where PVDD ≤ 14V.
Applications
- LCD TV, OLED TV
- Wireless Speaker, Smart Speaker with Voice Assistant
- Soundbar, Wired Speaker, Bookshelf Stereo System
- Desktop PC, Notebook PC
- AV Receiver, Smart Home and IoT Appliances
Q & A
- What is the TAS5805M?
The TAS5805M is a high-efficiency, stereo, closed-loop Class-D amplifier with integrated audio processing and low power dissipation.
- What are the output power configurations of the TAS5805M?
The TAS5805M supports 2 × 23 W in stereo mode and 45 W in mono mode.
- What is the operating temperature range of the TAS5805M?
The operating temperature range is -25°C to 85°C.
- What are the key audio processing features of the TAS5805M?
The device features multi-band DRC, AGL, thermal foldback, DC blocking, input mixer, output crossbar, and level meter.
- How does the TAS5805M manage power consumption?
The TAS5805M uses TI's proprietary Hybrid Modulation scheme to consume very-low quiescent current, extending battery life in portable applications.
- What are the power supply requirements for the TAS5805M?
The device operates with PVDD from 4.5 V to 26.4 V and DVDD and I/O from 1.8 V or 3.3 V.
- What types of digital audio interfaces does the TAS5805M support?
The device supports I2S, LJ, RJ, TDM, and 3-Wire Digital Audio Interface.
- What self-protection features are integrated into the TAS5805M?
The device includes over-current error, over-temperature warning/error, under/over-voltage lock-out, and adjacent pin to pin short protection.
- How does the TAS5805M facilitate system integration?
The device uses I2C software control for easy system integration and reduces solution size by requiring fewer passives compared to open-loop devices.
- Can the TAS5805M operate without inductors?
Yes, the TAS5805M can operate inductor-less using ferrite beads for most cases where PVDD ≤ 14V.
