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- Part Number LM386MM-1
- Manufacturer Texas Instruments
- Pin Count 8
- Part Category Integrated Circuit
- Package Category Small Outline Packages
- Footprint Name Small Outline Packages - D0008A
- Released Date May 26, 2021
- Last Modified Date Mar 7, 2023 4:10 PM UTC
- Pinout / Pin List Click Here (Member Only)
LM386MM-1 Details
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Manufacturer Part Number:
LM386MM-1
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Part Life Cycle Code:
Obsolete
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Part Package Code:
SOIC
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Package Description:
MSOP-8
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Pin Count:
8
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ECCN Code:
EAR99
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HTS Code:
8542.33.00.01
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Manufacturer:
Texas Instruments
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YTEOL:
0
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Bandwidth-Nom:
300 kHz
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Consumer IC Type:
AUDIO AMPLIFIER
LM386MM-1 Frequently Asked Questions (FAQs)
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Texas Instruments recommends using a 10uF capacitor in parallel with a 0.1uF capacitor between the power supply pins (VCC and GND) to ensure stable operation and minimize noise.
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The gain of the LM386MM-1 can be set using an external resistor and capacitor between pins 1 and 8. A gain of 20 is set by default, but it can be increased to 200 by adding a 10kΩ resistor and a 10nF capacitor. The gain can be calculated using the formula: Gain = 20 × (R1 + R2) / R2, where R1 is the resistance between pins 1 and 8, and R2 is the resistance between pin 8 and GND.
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The maximum power output of the LM386MM-1 is 1W into a 4Ω load, but it can be increased to 2W into a 2Ω load with proper heat sinking. However, it's essential to ensure that the device does not exceed its maximum junction temperature of 150°C to prevent damage.
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To reduce noise and hum, ensure that the power supply is well-regulated and filtered. Use a low-ESR capacitor for power supply decoupling, and keep the circuit layout clean and compact. Additionally, use a shielded cable for the input signal, and consider adding a noise filter capacitor between the input pins and GND.
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Yes, the LM386MM-1 can be used as a headphone amplifier, but it's essential to ensure that the output power is limited to prevent damage to the headphones. A maximum output power of 100mW into a 32Ω load is recommended. Additionally, consider adding a voltage divider to reduce the output voltage to a safe level for headphones.
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About Texas Instruments
Texas Instruments (TI) designs and manufactures semiconductors and integrated circuits for a wide range of applications. The company's product portfolio includes analog chips, which are essential for managing power and signal functions in electronic devices, and embedded processors, which serve as the brains in various systems, enabling functionality in everything from industrial equipment to consumer electronics. TI's innovations in semiconductor technology have made it a leader in the industry.