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MAX9709ETN from MAXIM,MAXIM - Dallas Semiconductor

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MAX9709ETN

Manufacturer: MAXIM

25W/50W, Filterless, Spread-Spectrum, Stereo/Mono, Class D Amplifier

Partnumber Manufacturer Quantity Availability
MAX9709ETN MAXIM 114 In Stock

Description and Introduction

25W/50W, Filterless, Spread-Spectrum, Stereo/Mono, Class D Amplifier The MAX9709ETN is a stereo 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:**  
  - 2 x 20W into 4Ω at 10% THD+N (with 12V supply)  
  - 2 x 12W into 8Ω at 10% THD+N (with 12V supply)  
- **Supply Voltage Range:** 4.5V to 14V  
- **Efficiency:** Up to 90% (reduces heat dissipation)  
- **THD+N (Total Harmonic Distortion + Noise):** 0.03% (typical)  
- **Signal-to-Noise Ratio (SNR):** 100dB (A-weighted)  
- **Switching Frequency:** 1.2MHz (fixed)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 56-pin TQFN (Thin Quad Flat No-Lead)  

### **Descriptions:**  
- The MAX9709ETN is a high-efficiency, Class D audio amplifier designed for driving stereo speakers in portable and fixed audio applications.  
- It uses a fixed-frequency PWM modulation scheme to minimize EMI interference.  
- The device includes integrated feedback and protection circuits for improved reliability.  

### **Features:**  
- **Stereo Class D Amplifier:** Supports two-channel output.  
- **Spread-Spectrum Modulation:** Reduces EMI emissions.  
- **Short-Circuit & Thermal Protection:** Prevents damage under fault conditions.  
- **Low Quiescent Current:** 7mA (typical) for power efficiency.  
- **Pop-and-Click Suppression:** Minimizes noise during power-up/down.  
- **Differential Inputs:** Reduces common-mode noise.  
- **No External LC Filter Required:** Simplifies design (filterless operation).  

This information is based solely on the manufacturer's datasheet.

Application Scenarios & Design Considerations

25W/50W, Filterless, Spread-Spectrum, Stereo/Mono, Class D Amplifier

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