LM4871 SOP8
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The LM4871 is a bridge-connected audio power amplifier capable of delivering 1W of continuous average power to an 8Ω load with less than 1% total harmonic distortion plus noise (THD+N) using a 5V power supply. It is designed for demanding audio applications in mobile phones, PDAs, and other portable communication devices. The device features a low power consumption shutdown mode and thermal shutdown protection.
Key Features:
- Output Power: 1W into an 8Ω load with less than 1% THD+N at 5V supply
- Low Distortion: 0.5% THD+N at 1kHz, 600mW, 8Ω
- Shutdown Mode: Reduces supply current to 0.7µA
- Thermal Shutdown Protection: Ensures device protection from overheating
- No Output Coupling Capacitors, Bootstrap Capacitors, or Snubber Networks Required
- Surface-Mount Package: SOP8 (Small Outline Package)
- Supply Voltage Range: 2.0V to 5.5V
- Quiescent Current: 4mA (typical) at 5V
- Shutdown Current: 0.7µA (typical)
- Gain: Internally fixed at 20dB
- PSRR: 62dB (typical) at 217Hz
- Operating Temperature Range: -40°C to +85°C
- Package: 8-pin SOP (Small Outline Package)
- Mobile Phones: Ideal for providing high-quality audio output in compact devices.
- PDAs: Suitable for audio applications in personal digital assistants.
- Portable Communication Devices: Used in various portable electronics requiring efficient audio amplification.
- Battery-Powered Devices: Efficient power usage makes it suitable for battery-operated gadgets.
- Consumer Electronics: Employed in portable speakers, soundbars, and other audio peripherals.
Technical Specifications:
- Logic Family: CMOS
- Number of Channels: 3
- Switch Configuration: Single-Pole Double-Throw (SPDT)
- Supply Voltage Range: 3V to 15V
- “ON” Resistance (R_ON): 125Ω typical at V_DD = 10V
- “OFF” Leakage Current (I_OFF): ±100pA typical at V_DD = 10V
- Control Input Voltage (V_IH): 0.7 V_DD min, 0.3 V_DD max
- Maximum Operating Frequency: 40 MHz at V_DD = 10V
Applications:
- Signal routing and switching
- Analog and digital multiplexing
- Audio and video signal processing
- Data acquisition systems
- Test equipment