Details

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Below is the parameter table and instructions for the TDA8950TH/N1118, a high-efficiency D-class audio amplifier.

Parameter Table

Parameter	Symbol	Min	Typ	Max	Unit	Conditions
Supply Voltage	Vcc	4.5	12	16	V
Output Power (8Ω, THD=10%)	Pout		30		W	1 kHz, BTL mode
Quiescent Current	Iq		100		mA	No load, Vcc = 12V
Efficiency	η		90		%	1 kHz, 8Ω, 1W output
Signal-to-Noise Ratio	SNR		100		dB	A-weighted, Vcc = 12V
Total Harmonic Distortion	THD		0.05		%	1 kHz, 8Ω, 1W output
Input Sensitivity	Vin		700		mVrms	1 kHz, 8Ω, 1W output
Input Impedance	Rin		10		kΩ
Shutdown Current	Isd		10		μA	Vcc = 12V
Operating Temperature Range	Toper	-40		85	°C
Storage Temperature Range	Tstg	-65		150	°C

Instructions

1. Supply Voltage:

   • Ensure the supply voltage (Vcc) is within the range of 4.5V to 16V.
   • Use a stable power supply to avoid voltage fluctuations that could affect performance.

2. Output Configuration:

   • The TDA8950TH/N1118 supports Bridge-Tied Load (BTL) mode for driving speakers.
   • Connect the positive output terminal to one speaker terminal and the negative output terminal to the other speaker terminal.

3. Quiescent Current:

   • The quiescent current is typically around 100mA with no load. Ensure your power supply can handle this current.

4. Efficiency:

   • The amplifier has a high efficiency of up to 90% at 1 kHz and 8Ω load, which helps in reducing heat dissipation.

5. Signal-to-Noise Ratio (SNR):

   • The SNR is typically 100 dB, ensuring a clean audio signal with minimal noise.

6. Total Harmonic Distortion (THD):

   • Keep the THD below 0.05% for optimal audio quality. This value is typical at 1 kHz and 8Ω load.

7. Input Sensitivity:

   • The input sensitivity is 700 mVrms for 1W output at 1 kHz and 8Ω load. Adjust the input signal level accordingly.

8. Input Impedance:

   • The input impedance is 10 kΩ, making it suitable for most audio sources.

9. Shutdown Mode:

   • To enter shutdown mode, pull the shutdown pin low. The shutdown current is typically 10 μA.
   • To resume operation, pull the shutdown pin high.

10. Operating and Storage Temperature:

    • The operating temperature range is -40°C to 85°C.
    • The storage temperature range is -65°C to 150°C. Ensure the device is stored in a suitable environment to avoid damage.

11. Thermal Management:

    • Use a heatsink if necessary to manage heat dissipation, especially when operating at high power levels or in high ambient temperatures.

12. Layout Considerations:

    • Place the TDA8950TH/N1118 close to the power supply and ground planes to minimize noise and improve stability.
    • Use short and wide traces for power and ground connections to reduce inductance and resistance.

By following these parameters and instructions, you can ensure optimal performance and reliability of the TDA8950TH/N1118 in your audio applications.

(For reference only)