1.1 Watt Audio Power Amplifier The LM4893MA is a manufacturer by National Semiconductor (NS). Here are its specifications, descriptions, and features:
### **Specifications:**
- **Type:** Audio Power Amplifier
- **Output Power:** 1.1W per channel into 8Ω (at 5V supply, THD+N = 10%)
- **Supply Voltage Range:** 2.2V to 5.5V
- **Quiescent Current:** 2.7mA (typical)
- **THD+N (Total Harmonic Distortion + Noise):** 0.3% (typical at 1kHz, 1W output)
- **Shutdown Current:** 0.01μA (typical)
- **Operating Temperature Range:** -40°C to +85°C
- **Package:** 8-Pin SOIC
### **Descriptions:**
The LM4893MA is a dual bridge-connected audio power amplifier designed for portable communication devices. It operates from a single supply and delivers high-quality audio output with low power consumption. The device includes an internal thermal shutdown protection mechanism and requires minimal external components.
### **Features:**
- **Dual Bridge Configuration:** Allows differential drive for improved noise rejection.
- **Low Quiescent Current:** Enhances battery life in portable applications.
- **Thermal Shutdown Protection:** Prevents damage from overheating.
- **No Output Coupling Capacitors Required:** Reduces component count and cost.
- **Improved PSRR (Power Supply Rejection Ratio):** Minimizes noise from power supply variations.
- **Space-Saving SOIC Package:** Suitable for compact PCB designs.
This information is sourced from the manufacturer's datasheet.
