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Specifications
SKU: 11247396
| Parameter | Symbol | Min | Typ | Max | Unit | Description |
|---|---|---|---|---|---|---|
| Supply Voltage | VDD | 2.7 | 5 | 5.5 | V | Operating supply voltage range |
| Quiescent Current | IQ | - | 10 | - | mA | Typical quiescent current per channel |
| Output Power (VDD = 5V) | POUT | - | 150 | - | mW | Continuous average power output into 8Ω load |
| Total Harmonic Distortion | THD+N | - | 0.5 | - | % | THD+N at 1kHz, 1Vrms output |
| Signal-to-Noise Ratio | SNR | - | 90 | - | dB | Signal-to-noise ratio at 1kHz |
| Shutdown Current | ISD | - | 0.1 | - | μA | Typical shutdown current |
| Input Sensitivity | VIN | - | 100 | - | mVrms | Input sensitivity for full output |
| Input Impedance | ZIN | - | 100 | - | kΩ | Input impedance |
| Shutdown Pin Voltage | VSD | 0 | 1.2 | 5.5 | V | Voltage range to activate shutdown |
| Operating Temperature | TOPR | -40 | - | 85 | °C | Operating temperature range |
| Storage Temperature | TSTG | -65 | - | 150 | °C | Storage temperature range |
Instructions for Using the LM4863M:
Supply Voltage:
- Ensure the supply voltage (VDD) is within the range of 2.7V to 5.5V. The typical operating voltage is 5V.
Quiescent Current:
- The typical quiescent current per channel is 10mA. This should be considered when designing the power supply.
Output Power:
- The continuous average power output into an 8Ω load is typically 150mW at VDD = 5V.
Total Harmonic Distortion:
- The total harmonic distortion plus noise (THD+N) is typically 0.5% at 1kHz and 1Vrms output.
Signal-to-Noise Ratio:
- The signal-to-noise ratio (SNR) is typically 90dB at 1kHz.
Shutdown Current:
- The typical shutdown current is 0.1μA, which helps in reducing power consumption when the device is not in use.
Input Sensitivity:
- The input sensitivity is typically 100mVrms for full output power.
Input Impedance:
- The input impedance is typically 100kΩ, which should be considered when connecting the input signal source.
Shutdown Pin:
- The shutdown pin (SD) can be used to turn off the amplifier. Apply a voltage between 0V and 1.2V to activate the shutdown mode. The device will operate normally when the SD pin is at VDD or left floating.
Operating Temperature:
- The operating temperature range is from -40°C to 85°C. Ensure the device is used within this range to avoid damage.
Storage Temperature:
- The storage temperature range is from -65°C to 150°C. Store the device in a dry and cool place when not in use.
Layout Considerations:
- Use proper PCB layout techniques to minimize noise and interference. Keep the power supply lines short and use bypass capacitors close to the power pins.
Thermal Management:
- If the device is expected to operate at high power levels or in high ambient temperatures, consider using a heat sink or ensuring adequate airflow.
Power-Up Sequence:
- Ensure that the power supply voltage is applied before any input signals are present to avoid potential damage or distortion.
Capacitor Selection:
- Use appropriate decoupling capacitors (typically 0.1μF and 10μF) on the power supply lines to filter out noise and provide stable operation.
By following these guidelines, you can ensure optimal performance and reliability of the LM4863M audio amplifier.
(For reference only)Inquiry - LM4863M
