Overview
The TAS5806M is a high-efficiency, stereo, closed-loop Class-D audio amplifier produced by Texas Instruments. It offers a cost-effective digital input solution with low power dissipation and advanced audio processing capabilities. The device features Texas Instruments' proprietary Hybrid Modulation scheme, which consumes low quiescent current, extending battery life in portable audio applications. With integrated self-protection mechanisms and easy system integration through I2C software control, the TAS5806M is designed for a variety of audio applications requiring high performance and reliability.
Key Specifications
| Parameter | Min | Max | Unit | |
|---|---|---|---|---|
| PVDD Supply | -0.3 | 30 | V | |
| DVDD Low-voltage Digital Supply | -0.3 | 3.9 | V | |
| Continuous Output Power (VPVDD = 12 V, RSPK = 4 Ω, f = 1kHz, THD+N = 1%, BD Mode) | 15.4 | W | ||
| Continuous Output Power (VPVDD = 18 V, RSPK = 4 Ω, f = 1kHz, THD+N = 1%, BD Mode) | 33.6 | W | ||
| RDS(on) Drain-to-source On Resistance of the Individual Output MOSFETs | 180 | mΩ | ||
| Over-Current Error Threshold | 5 | A | ||
| Over Temperature Error Threshold | 160 | °C | ||
| Junction-to-Ambient Thermal Resistance (TSSOP 38-Pin DCP) | 29 | °C/W |
Key Features
- Supports multiple output configurations: 2 × 23 W in 2.0 mode (8-Ω, 21 V, THD+N=1%) and 45 W in mono mode (4-Ω, 21 V, THD+N=1%) for subwoofer channels.
- Integrated self-protection mechanisms including adjacent pin-to-pin short protection, over-current error (OCE), over-temperature warning (OTW), over-temperature error (OTE), and under or over-voltage lock-out (UVLO/OVLO).
- Easy system integration with I2C software control, reduced solution size, and fewer passives required compared to open-loop devices.
- Inductor-less operation (using ferrite beads) for most cases where PVDD ≤ 14V.
- Advanced audio processing capabilities including sample rate conversion (SRC), 15 bands per channel equalization, volume control, audio mixing, 3-band 4th order dynamic range compression (DRC), full-band automatic gain limiting (AGL), THD manager, and level meter.
Applications
- LCD TV, OLED TV
- Wireless speaker, smart speaker with voice assistant
- Soundbar, wired speaker
- Desktop PC, notebook PC
- AV receiver, smart home and IoT appliances
Q & A
- What is the maximum output power of the TAS5806M in stereo mode?
The TAS5806M can deliver up to 2 × 23 W in stereo mode (8-Ω, 21 V, THD+N=1%).
- What is the maximum output power in mono mode?
The device can deliver up to 45 W in mono mode (4-Ω, 21 V, THD+N=1%) for subwoofer channels.
- What are the key self-protection features of the TAS5806M?
The device includes protection against adjacent pin-to-pin shorts, over-current errors, over-temperature warnings and errors, and under or over-voltage lock-outs.
- How does the TAS5806M support system integration?
The device supports easy system integration through I2C software control, reduced solution size, and fewer passives required compared to open-loop devices.
- What is the typical quiescent current consumption of the TAS5806M?
The device consumes a low quiescent current of 16.5 mA at 13.5 V PVDD.
- What are the advanced audio processing capabilities of the TAS5806M?
The device includes sample rate conversion (SRC), 15 bands per channel equalization, volume control, audio mixing, 3-band 4th order dynamic range compression (DRC), full-band automatic gain limiting (AGL), THD manager, and level meter.
- What is the recommended operating voltage range for PVDD?
The recommended operating voltage range for PVDD is from 4.5 V to 26.4 V.
- What is the junction-to-ambient thermal resistance for the TSSOP 38-Pin DCP package?
The junction-to-ambient thermal resistance for the TSSOP 38-Pin DCP package is 29 °C/W.
- What types of filters can be used for inductor-less operation?
Inexpensive ferrite bead filters can be used for inductor-less operation in most cases where PVDD ≤ 14V.
- What are some common applications of the TAS5806M?
Common applications include LCD TV, OLED TV, wireless speakers, soundbars, desktop PCs, notebook PCs, AV receivers, and smart home and IoT appliances.
