Diodes Incorporated
U QFN3030 16 Type B

Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.

Back to Audio


25mW True CAP Free Stereo Headphone Driver

Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.


The PAM8908 stereo headphone driver is designed for portable equipment where board space is at a premium. The PAM8908 uses a unique, patent pending architecture to produce a ground-referenced output from a single supply, eliminating the need for large DC-blocking capacitors, saving cost , board space, and component height. The PAM8908 delivers up to 25mW per channel into a 16Ω load and has low 0.03% THD+N. A high power-supply rejection ratio allows this device to operate from noisy digital supplies without an additional linear regulator. The PAM8908 operates from a single supply from 2.5V t o 5.5V, has short-circuit and over temperature protection. Shutdown mode reduces supply current to less than 1μA.


  • Patent Pending 3 Phase Power Line Shift Charge Pump Eliminates Need for DC-BlockingCapacitors
  • TrueCapFree Architecture, Output Biased at 0V (System Ground)
  • Excellent Low Frequency Fidelity
  • High PSRR
  • Less Than 1μA Shutdown Current
  • Support Both Fully Differential and Single Ended Inputs
  • Short Circuit and Over Temperature Protection
  • Selectable Gain Settings: -6dB, 0dB, 3dB and 6dB
  • Available in Space Saving Packages: TQFN3x3-16L


  • Smart Phones/Cellular Phones
  • Notebook Computers
  • Portable DVD Player
  • Personal Digital Assistants (PDAs )
  • Electronic Dictionaries
  • Digital Still Cameras
  • Portable Gaming

Product Specifications

Product Parameters

Minimum VDD (V) 2.5
Compliance (Only Automotive supports PPAP) Standard
AEC Qualified No
Maximum VDD (V) 5.5 V
IQ (mA) 4 mA
Power/CH (W) @ THD=10% N/A
Power/CH (W) @ THD=1% 0.035
Mono or Stereo Stereo
SE Yes
Class-D or AB D
Power Limit No
Anti-Sat No
Headphone Out Yes
Efficiency (%) N/A %
Volume/ Gain 4-Settings
Gain Min -6 dB
Gain Max 6 dB
SNR 100 dB
PSRR 75 dB
Special Feature N/A

Related Content


Technical Documents

Application Notes

Recommended Soldering Techniques


Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2512 2021-04-16 2021-07-16 Qualified Additional Assembly & Test (A/T) Site