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Diodes Incorporated PAM8019E 4W Stereo Class-D Audio Amplifiers

Diodes Incorporated PAM8019E 4W Stereo Class-D Audio Amplifiers are designed for driving bridged-tied speakers. The Diodes Incorporated PAM8019E amplifiers include a stereo Class-AB amplifier for headphones. The devices feature a 62-step DC volume control for simple and precise adjustments, offering a gain range from +20dB (at 0V) to -60dB (at VDD). The amplifier’s spread spectrum modulation (SSM) reduces EMI, allowing for the use of cost-effective ferrite bead filters. Additionally, the integrated non-clip power limit (PLIM) technology automatically suppresses output with a programmable power limit, enhancing sound quality and protecting the speakers.

Features

  • Output power
    • Class-D amplifier THD+N = 10%
    • VDD = 5V: RL = 4Ω, PO = 3W; RL = 8Ω, PO = 1.78W
    • VDD = 5.8V: RL = 4Ω, PO = 4W; RL = 8Ω, PO = 2.34W
    • Class-D amplifier THD+N = 1%
    • VDD = 5V: RL = 4Ω, PO = 2.41W; RL = 8Ω, PO = 1.44W
    • VDD = 5.8V: RL = 4Ω, PO = 3.27W; RL = 8Ω, PO = 1.92W
    • Class-AB headphone amplifier THD+N = 1%
    • VDD = 5V, RL = 32Ω, PO = 66mW
    • VDD = 5.8V, RL = 32Ω, PO = 88mW
  • 2.5V to 6.0V operating voltage
  • 4W Stereo Class D with 88mW Class-AB headphone driver
  • 40µVRMS noise of Class-D amplifier at the maximum gain
  • 90% efficiency at VDD = 5V, PO = 3W x 2ch, 4Ω loading
  • 62-step DC volume control with hysteresis from -60dB to +20dB
  • Non-Clip Power Limit (NCPL) and AGC function
  • Speaker open short detection during startup
  • SSM helps easily pass EMI with simple FB-C
  • Thermal and overcurrent protection with auto-recovery
  • Totally lead-free and fully RoHS compliant
  • Halogen and antimony-free Green device

Applications

  • LCD monitors and TVs
  • Projectors/all-in-one computers
  • Portable/active speakers
  • Bone conductive headphones
  • DVD players

Typical Applications Circuit

Diodes Incorporated PAM8019E 4W Stereo Class-D Audio Amplifiers
Published: 2024-08-23 | Updated: 2024-09-18