Fixed Gain 1 Watt Audio Power Amplifier The LM4820MX-6 is a mono bridged audio power amplifier manufactured by National Semiconductor (NS). Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:
### **Specifications:**
- **Manufacturer:** National Semiconductor (NS)
- **Type:** Mono Bridged Audio Power Amplifier
- **Package:** 8-Pin SOIC (Small Outline Integrated Circuit)
- **Operating Voltage Range:** 2.7V to 5.5V
- **Output Power:** 1.1W (typical into 8Ω at 5V)
- **Quiescent Current:** 4mA (typical)
- **Total Harmonic Distortion + Noise (THD+N):** 0.2% (typical at 1kHz, 1W into 8Ω)
- **Shutdown Current:** 0.6µA (typical)
- **Gain:** Fixed at 6dB (internally set)
- **Bandwidth:** 20Hz to 20kHz (typical)
- **Operating Temperature Range:** -40°C to +85°C
### **Descriptions:**
- The LM4820MX-6 is designed for low-voltage applications, making it suitable for portable audio devices.
- It features a bridge-tied-load (BTL) configuration, eliminating the need for an output coupling capacitor.
- The amplifier includes an internal thermal shutdown protection mechanism to prevent overheating.
- It is optimized for driving small speakers in battery-powered devices.
### **Features:**
- **Low Voltage Operation:** Works efficiently from 2.7V to 5.5V.
- **BTL Output:** Provides higher power output without requiring an external DC-blocking capacitor.
- **Low Quiescent Current:** Enhances battery life in portable applications.
- **Thermal Shutdown Protection:** Safeguards the device from overheating.
- **Fixed Gain:** Simplifies design by eliminating external gain-setting components.
- **Space-Saving Package:** 8-pin SOIC for compact PCB designs.
- **Improved PSRR (Power Supply Rejection Ratio):** Reduces noise from power supply variations.
This information is strictly based on the manufacturer's datasheet and does not include any additional recommendations or interpretations.
