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Specifications
SKU: 4651317
IC AMP CLASS AB STER 95MW 10TDFN
| Parameter | Description | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Supply Voltage (VDD) | Operating supply voltage range | 2.5 | - | 3.6 | V |
| Supply Current (IDD) | Quiescent supply current (no load) | - | 1.5 | - | mA |
| Output Power (POUT) | Maximum output power into 16Ω load at 1% THD+N | - | 24 | - | mW |
| Efficiency | Efficiency at 1Vrms into 16Ω load | - | 75 | - | % |
| SNR (Signal-to-Noise Ratio) | Signal-to-noise ratio at 1kHz | - | 95 | - | dB |
| THD+N (Total Harmonic Distortion + Noise) | Total harmonic distortion plus noise at 1kHz, 1Vrms output | - | 0.05 | - | % |
| PSRR (Power Supply Rejection Ratio) | Power supply rejection ratio at 217Hz | - | 70 | - | dB |
| Input Sensitivity | Input voltage required for 1Vrms output | - | 0.2 | - | V |
| Shutdown Current | Supply current in shutdown mode | - | 0.1 | - | μA |
| Operating Temperature Range | Temperature range for normal operation | -40 | - | 85 | °C |
| Storage Temperature Range | Temperature range for storage | -65 | - | 150 | °C |
Instructions for Use
Supply Voltage:
- Ensure the supply voltage (VDD) is within the range of 2.5V to 3.6V.
- Connect the VDD pin to a stable power source.
Ground Connection:
- Connect the GND pin to the system ground to ensure proper operation.
Input Signal:
- Apply the input signal to the IN+ and IN- pins.
- The input sensitivity is 0.2V for 1Vrms output. Adjust the input level accordingly to avoid clipping or under-driving the amplifier.
Output Load:
- Connect the speaker or load to the OUT+ and OUT- pins.
- The device is designed to drive a 16Ω load, but it can also handle other impedance loads within its power capability.
Shutdown Mode:
- To enter shutdown mode, set the SHDN pin to a low logic level.
- In shutdown mode, the supply current drops to 0.1μA.
Thermal Considerations:
- Ensure adequate heat dissipation if operating at high power levels or in high ambient temperatures.
- The device is rated for operation from -40°C to 85°C.
Storage:
- Store the device in a temperature range of -65°C to 150°C to prevent damage.
Electrostatic Discharge (ESD) Protection:
- Handle the device with ESD precautions to avoid damage.
- Use grounded wrist straps and static-safe surfaces when handling the device.
PCB Layout:
- Follow recommended PCB layout guidelines to minimize noise and ensure optimal performance.
- Place decoupling capacitors close to the VDD and GND pins to filter out high-frequency noise.
Testing:
- Test the device with a known good signal source and load to verify proper operation.
- Measure the output power, efficiency, and THD+N to ensure they meet the specified parameters.
Inquiry - MAX9820ETB+T
