Stereo 3W Audio Power Amplifiers with Headphone Drive and Input Mux The MAX9761ETI is a high-efficiency, mono Class D audio power amplifier manufactured by Maxim Integrated. Below are its specifications, descriptions, and features based on factual information:
### **Specifications:**
- **Manufacturer:** Maxim Integrated
- **Part Number:** MAX9761ETI
- **Package:** 28-pin TQFN (Thin Quad Flat No-Lead)
- **Operating Voltage Range:** 4.5V to 14V
- **Output Power:**
- 10W into 4Ω at 12V supply (THD+N = 10%)
- 6W into 8Ω at 12V supply (THD+N = 10%)
- **Efficiency:** Up to 90%
- **Signal-to-Noise Ratio (SNR):** >90dB (A-weighted)
- **Total Harmonic Distortion + Noise (THD+N):** <0.1% (1W into 8Ω)
- **Switching Frequency:** 1.2MHz (adjustable)
- **Shutdown Current:** <1µA
### **Descriptions:**
The MAX9761ETI is a mono Class D amplifier designed for high-efficiency audio applications. It features a fixed-gain architecture, eliminating the need for external gain-setting resistors. The device operates with a single power supply and includes thermal and short-circuit protection. Its high efficiency makes it suitable for battery-powered and space-constrained applications such as portable speakers, TVs, and automotive audio systems.
### **Features:**
- **High Efficiency:** Up to 90%, reducing power dissipation.
- **Single-Supply Operation:** 4.5V to 14V.
- **Fixed Gain (20dB):** Simplifies design by eliminating external components.
- **Adjustable Switching Frequency (1.2MHz):** Helps minimize EMI interference.
- **Thermal and Short-Circuit Protection:** Enhances reliability.
- **Low Shutdown Current (<1µA):** Extends battery life in portable applications.
- **Pop-and-Click Suppression:** Reduces audible noise during power-up/down.
- **Space-Saving 28-Pin TQFN Package:** Suitable for compact designs.
This information is based solely on the manufacturer's datasheet and technical documentation.
