Wide Input Voltage Low Power Audio Amplifier with Internal Gain

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Product details

Parameters

Audio input type Analog Input Architecture Class-AB Speaker channels (Max) Mono Power stage supply (Max) (V) 18 Power stage supply (Min) (V) 4 Load (Min) (ohms) 4 Output power (W) 0.325 THD + N @ 1 kHz (%) 0.2 Iq (Typ) (mA) 4 Control interface Hardware Closed/open loop Closed Analog supply (Min) (V) 4 Analog supply (Max) (V) 18 PSRR (dB) 50 Rating Catalog Operating temperature range (C) 0 to 70 open-in-new Find other Speaker amps

Package | Pins | Size

PDIP (P) 8 93 mm² 9.81 x 9.43 SOIC (D) 8 19 mm² 4.9 x 3.9 VSSOP (DGK) 8 15 mm² 3 x 4.9 open-in-new Find other Speaker amps

Features

  • Battery Operation
  • Minimum External Parts
  • Wide Supply Voltage Range: 4 V–12 V or
    5 V–18 V
  • Low Quiescent Current Drain: 4 mA
  • Voltage Gains from 20 to 200
  • Ground-Referenced Input
  • Self-Centering Output Quiescent Voltage
  • Low Distortion: 0.2% (AV = 20, VS = 6 V, RL = 8 Ω, PO = 125 mW, f = 1 kHz)
  • Available in 8-Pin MSOP Package

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Description

The LM386M-1 and LM386MX-1 are power amplifiers designed for use in low voltage consumer applications. The gain is internally set to 20 to keep external part count low, but the addition of an external resistor and capacitor between pins 1 and 8 will increase the gain to any value from 20 to 200.

The inputs are ground referenced while the output automatically biases to one-half the supply voltage. The quiescent power drain is only 24 mW when operating from a 6-V supply, making the LM386M-1 and LM386MX-1 ideal for battery operation.

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Technical documentation

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No results found. Please clear your search and try again. View all 5
Type Title Date
* Datasheet LM386 Low Voltage Audio Power Amplifier datasheet (Rev. C) May 30, 2017
Application notes Guidelines for Measuring Audio Power Amplifier Performance (Rev. A) Aug. 26, 2019
Application notes AN-1849 An Audio Amplifier Power Supply Design (Rev. C) Jun. 27, 2019
Application notes AN-263 Sine Wave Generation Techniques (Rev. C) Apr. 22, 2013
Application notes Calculating Gain for Audio Amplifiers (Rev. A) Sep. 01, 2005

Design & development

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Design tools & simulation

CALCULATION TOOLS Download
Coefficient Calculator For Digital Biquad Filters
COEFFICIENT-CALC COEFFICIENT-CALC (TIBQ) calculates the coefficients for the digital filter biquad transfer function implemented in TI audio codecs. The characteristics of the digital filter are adjusted by selecting a filter type and moving a control point within a window that shows the transfer function gain and (...)

CAD/CAE symbols

Package Pins Download
PDIP (P) 8 View options
SOIC (D) 8 View options
VSSOP (DGK) 8 View options

Ordering & quality

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