具有集成静音功能的 11W 立体声、9V 至 40V 电源电压、模拟输入 AB 类音频放大器
| Audio input type | Analog Input |
| Architecture | Class-AB |
| Speaker channels (Max) | Stereo |
| Power stage supply (Max) (V) | 40 |
| Power stage supply (Min) (V) | 9 |
| Load (Min) (ohms) | 4 |
| Output power (W) | 11 |
| THD + N @ 1 kHz (%) | 0.08 |
| Iq (Typ) (mA) | 5 |
| Control interface | Hardware |
| Closed/open loop | Closed |
| Analog supply (Min) (V) | 9 |
| Analog supply (Max) (V) | 40 |
| PSRR (dB) | 50 |
| Operating temperature range (C) | -20 to 80 |
- Drives 4? and 8? Loads
- Integrated Mute Function
- Internal Gain Resistors
- Minimal External Components Needed
- Single Supply Operation
- Internal Current Limiting and Thermal Protection
- Compact 9-lead TO-220 Package
- Wide Supply Range 9V - 40V
Key Specifications
- Output Power at 10% THD with 1kHz into 4? at VCC = 24V 11 W (typ)
- Output Power at 10% THD with 1kHz into 8? at VCC = 24V 7 W (typ)
- Closed Loop Gain 34 dB (typ)
- PO at 10% THD+N @ 1kHz into 4? Single-Ended DDPAK Package at VCC=12V 2.5 W (typ)
- PO at 10% THD+N @ 1kHz into 8? Bridged DDPAK Package at VCC=12V 5 W (typ)
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The LM4755 is a stereo audio amplifier capable of delivering 11W per channel of continuous average output power to a 4? load or 7W per channel into 8? using a single 24V supply at 10% THD+N. The internal mute circuit and pre-set gain resistors provide for a very economical design solution.
Output power specifications at both 20V and 24V supplies and low external component count offer high value to consumer electronic manufacturers for stereo TV and compact stereo applications. The LM4755 is specifically designed for single supply operation.
