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MAX9705AETB+T from MAXIM,MAXIM - Dallas Semiconductor

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MAX9705AETB+T

Manufacturer: MAXIM

2.3W, Ultra-Low-EMI, Filterless, Class D Audio Amplifier

Partnumber Manufacturer Quantity Availability
MAX9705AETB+T,MAX9705AETBT MAXIM 50 In Stock

Description and Introduction

2.3W, Ultra-Low-EMI, Filterless, Class D Audio Amplifier The **MAX9705AETB+T** is a high-efficiency, mono Class D audio power amplifier manufactured by **MAXIM Integrated** (now part of Analog Devices). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Output Power:**  
  - 1.4W into 8Ω at 5V (THD+N = 1%)  
  - 2.8W into 4Ω at 5V (THD+N = 1%)  
- **Supply Voltage Range:** 2.5V to 5.5V  
- **Efficiency:** Up to 90%  
- **THD+N (Total Harmonic Distortion + Noise):** 0.04% (typical)  
- **Signal-to-Noise Ratio (SNR):** 90dB (typical)  
- **Shutdown Current:** <1µA  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 10-pin TDFN (3mm x 3mm)  

### **Descriptions:**
- The MAX9705AETB+T is a **mono Class D amplifier** designed for portable audio applications.  
- It features **filterless modulation**, eliminating the need for external LC filters.  
- Includes **click-and-pop suppression** for noise-free operation during power-up/down.  
- Operates in **bridge-tied load (BTL)** mode for higher output power.  

### **Features:**
- **High Efficiency:** Reduces power consumption, extending battery life.  
- **Low Quiescent Current:** 3.5mA (typical) in active mode.  
- **Short-Circuit and Thermal Protection:** Ensures device safety.  
- **Small Footprint:** Suitable for space-constrained designs.  
- **Wide Supply Voltage Range:** Supports operation from 2.5V to 5.5V.  

This amplifier is commonly used in **mobile phones, portable media players, and other battery-powered audio devices**.  

(Note: Always refer to the official datasheet for the most accurate and detailed information.)

Application Scenarios & Design Considerations

2.3W, Ultra-Low-EMI, Filterless, Class D Audio Amplifier

Alternative Part Number

  • TPA2010D1YZFR --: Class-D mono audio amplifier in a small WCSP package with similar output power and supply range, a common drop-in style alternative to the MAX9705.
  • PAM8302AASCR --: Low-cost 2.5W Class-D mono amplifier with comparable supply voltage and gain options, suitable for similar portable audio designs.
  • LM4990MM/NOPB --: Boomer series mono Class-AB audio amplifier offering similar output power and shutdown features, usable where Class-D is not mandatory.

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