3.0 W Mono Class-D Audio Amplifier with fast gain ramp SmartGain(TM) AGC and DRC 9-DSBGA -40 to 85 The TPA2028D1YZFR is a digital input Class-D audio amplifier manufactured by Texas Instruments (TEXAS). Here are its key specifications, descriptions, and features:
### **Specifications:**
- **Output Power:** Up to **2.8W** into a **4Ω** load at **5V** supply.
- **Supply Voltage Range:** **2.5V to 5.5V**.
- **Efficiency:** Up to **90%** (Class-D architecture).
- **Signal-to-Noise Ratio (SNR):** **102dB** (A-weighted).
- **Total Harmonic Distortion + Noise (THD+N):** **0.03%** (1W, 4Ω, 5V).
- **Digital Input Interface:** **I²S, TDM, or PDM** (supports multiple formats).
- **Operating Temperature Range:** **-40°C to +85°C**.
- **Package:** **DSBGA (YZF)**, **9-bump**, **1.45mm x 1.45mm** (ultra-small footprint).
### **Descriptions:**
- The **TPA2028D1YZFR** is a **mono**, **digital-input Class-D amplifier** designed for portable audio applications.
- It integrates a **digital-to-analog converter (DAC)** and **Class-D amplifier** in a single chip.
- Supports **low-power operation** with automatic gain control (AGC) to prevent clipping.
- Features **pop-and-click suppression** for smooth power-up/down transitions.
### **Features:**
- **Ultra-Low Quiescent Current:** **1.5mA** (typical) for power efficiency.
- **Flexible Digital Audio Interface:** Supports **I²S, TDM (up to 8 channels), and PDM** inputs.
- **Integrated Dynamic Range Control (DRC):** Adjusts gain dynamically for optimal audio performance.
- **Short-Circuit & Thermal Protection:** Built-in safeguards for reliability.
- **Small Form Factor:** Ideal for space-constrained designs like smartphones, tablets, and wearables.
This amplifier is optimized for **battery-powered devices** requiring high-quality audio output with minimal power consumption.
