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LM4961 - Ceramic Speaker Driver

Description

The LM4961 is an audio power amplifier primarily designed for driving Ceramic Speaker for applications in Cell Phone and PDAs.

It integrates a boost converter, with variable output voltage, with an audio power amplifier.

Features

  • 1.
  • 2 Click and Pop Circuitry Eliminates Noise During Turn-On and Turn-Off Transitions.
  • Low Current Shutdown Mode.
  • Low Quiescent Current.
  • Mono 15Vp-p BTL Output, RL = 2μF+30Ω, f = 1kHz.
  • Thermal Shutdown Protection.
  • Unity-Gain Stable.
  • External Gain Configuration Capability.
  • Including Band Exchange SW.
  • Including Leakage Cut SW.

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Full PDF Text Transcription

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LM4961, LM4961LQBD www.ti.com SNAS242K – AUGUST 2004 – REVISED MAY 2013 LM4961 Ceramic Speaker Driver Check for Samples: LM4961, LM4961LQBD FEATURES 1 •2 Click and Pop Circuitry Eliminates Noise During Turn-On and Turn-Off Transitions • Low Current Shutdown Mode • Low Quiescent Current • Mono 15Vp-p BTL Output, RL = 2μF+30Ω, f = 1kHz • Thermal Shutdown Protection • Unity-Gain Stable • External Gain Configuration Capability • Including Band Exchange SW • Including Leakage Cut SW APPLICATIONS • Cellphone • PDA KEY SPECIFICATIONS • Quiescent Power Supply Current: 7mA (typ) • Voltage Swing in BTL at 1% THD: 15Vp-p (typ) • Shutdown current: 0.1μA (typ) DESCRIPTION The LM4961 is an audio power amplifier primarily designed for driving Ceramic Speaker for applications in Cell Phone and PDAs.
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