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TPA731DGN from TI,Texas Instruments

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TPA731DGN

Manufacturer: TI

Mono, Differential Input, Class-AB Audio Amplifier with Active High Shutdown

Partnumber Manufacturer Quantity Availability
TPA731DGN TI 2970 In Stock

Description and Introduction

Mono, Differential Input, Class-AB Audio Amplifier with Active High Shutdown The TPA731DGN is a 1.5-W mono audio power amplifier manufactured by Texas Instruments (TI). Below are its specifications, descriptions, and features based on Ic-phoenix technical data files:  

### **Specifications:**  
- **Output Power:** 1.5 W into 8 Ω at 5 V  
- **Supply Voltage Range:** 2.5 V to 5.5 V  
- **Quiescent Current:** 2.3 mA (typical)  
- **Total Harmonic Distortion + Noise (THD+N):** 0.3% (typical at 1 kHz, 1 W into 8 Ω)  
- **Shutdown Current:** 0.01 µA (typical)  
- **Gain:** Fixed at 6 dB (internally set)  
- **Package:** MSOP-8 (DGN)  

### **Descriptions:**  
The TPA731DGN is a low-voltage, mono audio amplifier designed for portable applications. It features an integrated depop circuit to minimize audible noise during power-up and shutdown. The device operates efficiently with a wide supply voltage range, making it suitable for battery-powered systems.  

### **Features:**  
- **Low Quiescent Current:** Extends battery life in portable devices.  
- **Thermal and Short-Circuit Protection:** Enhances reliability.  
- **No External Output Coupling Capacitors Required:** Reduces component count.  
- **Click-and-Pop Suppression:** Minimizes audible transients.  
- **Unity-Gain Stable:** Can be used in various configurations.  
- **Small Footprint:** MSOP-8 package saves board space.  

This information is strictly factual and sourced from TI's official documentation.

Application Scenarios & Design Considerations

Mono, Differential Input, Class-AB Audio Amplifier with Active High Shutdown

Alternative Part Number

  • LM4871MM --: Pin-compatible class-AB audio power amplifier in MSOP-8 with similar 1W output into 8 ohm, widely used as a drop-in substitute for TPA731.
  • PAM8403 --: Low-cost 3W class-D audio amplifier with comparable supply range and gain, suitable replacement when minor layout changes are acceptable.
  • MAX9710EUA --: 1.4W class-AB audio amplifier in a small package with similar supply voltage and shutdown features, usable as a functional alternative.

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