Overview
The TAS2770YFFR, produced by Texas Instruments, is a 20-W digital input mono Class-D audio amplifier designed for efficient and high-performance audio applications. It is optimized for driving small loudspeakers and is particularly suited for mobile and battery-powered devices due to its high efficiency and compact solution size. The amplifier features integrated speaker voltage and current sensing, along with battery tracking and brown-out prevention, making it an excellent choice for smart speakers, Bluetooth speakers, home automation devices, and portable electronics like notebooks and tablets.
Key Specifications
| Parameter | Value |
|---|---|
| Output Power | 20 W at 1% THD+N (4 Ω, 16 V), 15.4 W at 1% THD+N (4 Ω, 12.6 V) |
| Input Voltage Range | 4.5-16 V |
| Efficiency | 82.5% at 1 W (4 Ω, VBAT = 12.6 V) |
| THD+N | 0.03% at 1 W (4 Ω, VBAT = 12.6 V) |
| Idle Channel Noise | 32 µVrms A-Weighted |
| PSRR | 90 dB with 200 mV PP Ripple at 20 kHz |
| Package | 30-DSBGA |
| Operating Modes | TDM/I2C Mode, supports I2S, Left Justified, and TDM formats |
| PDM Input | Supports low latency audio playback or sensor aggregation |
Key Features
- High-performance mono Class-D amplifier with integrated speaker I/V sense.
- Battery tracking and brown-out prevention to prevent audio cut out and system shutdown.
- Support for TDM/I2C mode with configurable device addresses and multiple-byte read/write operations.
- PDM input for low latency audio playback or sensor aggregation.
- Robust clock fault detection and automatic volume ramping to minimize audible artifacts.
- Integrated protection features including over-temperature, over-current, and UVLO/OVLO fault detection.
- High efficiency and low noise operation, making it suitable for battery-powered devices.
Applications
- Smart speakers and Bluetooth speakers.
- Home automation devices.
- Notebook computers and tablets.
- Portable electronics requiring high-efficiency audio amplification.
Q & A
- What is the maximum output power of the TAS2770YFFR? The TAS2770YFFR can deliver up to 20 W of continuous power into a 4-Ω load at 16 V and 15.4 W into an 8-Ω load at 16 V, both at 1% THD+N.
- What is the input voltage range of the TAS2770YFFR? The input voltage range is 4.5-16 V.
- What is the efficiency of the TAS2770YFFR at 1 W output? The efficiency is 82.5% at 1 W (4 Ω, VBAT = 12.6 V).
- What types of operating modes does the TAS2770YFFR support? It supports TDM/I2C mode, including I2S, Left Justified, and TDM formats.
- Does the TAS2770YFFR have integrated protection features? Yes, it includes protection features such as over-temperature, over-current, UVLO/OVLO fault detection, and brown-out prevention.
- How does the TAS2770YFFR handle clock faults? It employs a robust clock fault detection engine that automatically volume ramps down the playback path if clock faults are detected and ramps back up once valid clocks are detected.
- What is the purpose of the PDM input in the TAS2770YFFR? The PDM input can be used for low latency audio playback or sensor aggregation.
- What package type is the TAS2770YFFR available in? It is available in a 30-DSBGA package.
- What are some common applications for the TAS2770YFFR? Common applications include smart speakers, Bluetooth speakers, home automation devices, and portable electronics like notebooks and tablets.
- How does the TAS2770YFFR manage battery voltage? It includes a battery tracking limiter with brown-out prevention to manage battery voltage and prevent audio cut out and system shutdown.
