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SGM4917 - Stereo Headphone Amplifier

Description

The SGM4917 stereo headphone amplifier is designed for portable equipment where board space is at a premium.

Features

  • SGM4917A: External Feedback Gain Network SGM4917B: Fixed -2V/V Gain SGM4917C: Fixed -1.5V/V Gain.
  • No Bulky DC-Blocking Capacitors Required.
  • Ground-Referenced Outputs Eliminate DC-Bias Voltage on Headphone Ground Pin.
  • No Degradation of Low-Frequency Response Due to Output Capacitors.
  • Differential Inputs for Enhanced Noise Cancellation.
  • 125mW per Channel into 32Ω Headset.
  • Low 0.02% THD+N.
  • High PSRR (78dB at 217Hz).
  • I.

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Datasheet preview – SGM4917

Datasheet Details

Part number SGM4917
Manufacturer SG Micro
File Size 404.72 KB
Description Stereo Headphone Amplifier
Datasheet download datasheet SGM4917 Datasheet
Additional preview pages of the SGM4917 datasheet.

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Full PDF Text Transcription

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Preliminary Datasheet SGM4917 125mW, Capless, Stereo Headphone Amplifier with Shutdown GENERAL DESCRIPTION The SGM4917 stereo headphone amplifier is designed for portable equipment where board space is at a premium. The SGM4917 uses capless Direct-drive architecture to produce a ground-referenced output from a single power supply, eliminating the need for large DC-blocking capacitors for output, and saving cost, board space, and component height. Additionally, for SGM4917B and SGM4917C, the gain is set internally (-2V/V or -1.5V/V), further reducing component count. For SGM4917A, the Gain can be adjusted by external feedback resistors. The SGM4917 delivers up to 125mW per channel into a 32Ω load and has low 0.02% THD+N.
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