Details

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Parameter	Description	Value
Part Number	Integrated Circuit for Audio Amplification	AN620
Function	Stereo Audio Amplifier
Supply Voltage	Operating Voltage Range	4.5V to 18V
Quiescent Current	Current Consumption at No Load	4mA (Typical)
Output Power	Continuous RMS Power per Channel	1W into 8惟 (THD = 10%)
Frequency Response	Flat Frequency Response	20Hz to 20kHz
Signal-to-Noise Ratio	SNR at 1kHz, A-weighted	75dB (Typical)
Total Harmonic Distortion	THD+N at 1kHz, 1W, 8惟	0.5% (Typical)
Input Sensitivity	Voltage Required for Rated Output	250mV (Typical)
Input Impedance	Input Resistance	47k惟 (Typical)
Operating Temperature	Ambient Temperature Range	-25掳C to +85掳C
Storage Temperature	Storage Temperature Range	-65掳C to +150掳C
Package Type	IC Package	DIP-8 or SOIC-8
Pin Count	Number of Pins	8

Instructions for Use

1. Power Supply:

   • Connect the power supply to the VCC and GND pins. Ensure the supply voltage is within the specified range of 4.5V to 18V.
   • Use a bypass capacitor (e.g., 10渭F) between VCC and GND close to the IC to filter out any noise.

2. Input Connection:

   • Connect the audio input signal to the IN+ and IN- pins. The input impedance is typically 47k惟.
   • For differential inputs, connect the positive input to IN+ and the negative input to IN-.

3. Output Connection:

   • Connect the speaker to the OUT+ and OUT- pins. The output can drive a load of 8惟 with a continuous RMS power of 1W.
   • Use appropriate speaker cables to minimize interference.

4. Grounding:

   • Ensure a common ground connection for all components, including the power supply, input source, and speaker.

5. Thermal Management:

   • The IC is designed to operate within a temperature range of -25掳C to +85掳C. If operating in high-temperature environments, consider additional heat dissipation measures such as heatsinks.

6. Protection:

   • The AN620 includes built-in short-circuit and thermal protection. However, it is recommended to use external fuses and diodes for added safety.

7. Layout Considerations:

   • Keep the layout compact to reduce parasitic inductance and capacitance.
   • Place decoupling capacitors close to the power pins to ensure stable operation.

8. Testing:

   • After assembly, test the circuit with a known good audio signal to verify proper operation.
   • Measure the output voltage across the speaker to ensure it matches the expected levels.

For more detailed information, refer to the datasheet provided by the manufacturer.

(For reference only)