Details

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BUY LM1875L https://www.utsource.net/itm/p/12607680.html

Parameter	Symbol	Min	Typ	Max	Unit
Supply Voltage	Vcc	20	-	60	V
Quiescent Current	IQ	-	15	-	mA
Output Power (8惟)	Pout	-	35	-	W
Output Power (4惟)	Pout	-	50	-	W
Total Harmonic Distortion	THD	-	0.03	-	%
Signal-to-Noise Ratio	SNR	-	98	-	dB
Input Sensitivity	Vin	-	1.0	-	Vrms
Input Impedance	Zin	-	47	-	k惟
Operating Temperature	Temp	-40	-	125	掳C
Storage Temperature	Tstg	-65	-	150	掳C

Instructions for Using the LM1875L

1. Power Supply:

   • The LM1875L can operate with a supply voltage ranging from 20V to 60V. Ensure the power supply is stable and within this range to avoid damage.

2. Heat Dissipation:

   • The device can dissipate significant heat, especially at high output powers. Use a heatsink to maintain the operating temperature within the specified range (-40掳C to 125掳C).

3. Output Configuration:

   • Connect the output to an 8惟 or 4惟 speaker load. The typical output power is 35W for 8惟 and 50W for 4惟.
   • Ensure the speaker is rated for the power output to prevent damage.

4. Input Signal:

   • The input sensitivity is typically 1.0Vrms. Adjust the input signal level to match this value for optimal performance.
   • The input impedance is 47k惟, so ensure the source impedance is compatible.

5. Signal-to-Noise Ratio:

   • The typical SNR is 98dB, indicating a low noise level. Use high-quality input signals to maintain this performance.

6. Total Harmonic Distortion:

   • The typical THD is 0.03%, which is very low. This ensures high-fidelity audio reproduction.

7. Protection Circuits:

   • The LM1875L includes built-in protection circuits for thermal shutdown and short-circuit protection. These features help prevent damage under abnormal conditions.

8. Storage:

   • Store the device in a dry environment with temperatures between -65掳C and 150掳C to ensure long-term reliability.

9. Mounting:

   • When mounting the device on a PCB, ensure proper spacing and cooling to manage heat dissipation effectively.

10. Testing:

    • Before final installation, test the device with a known good setup to verify proper operation and performance.

(For reference only)