PAM8901 / PAM8908

Document number: DS36456 Rev. 2 - 2

1 of 13

www.diodes.com

October 2016

© Diodes Incorporated

PAM8901 / PAM8908

25mW TRUE CAP FREE STEREO HEADPHONE AMPLIFIER

Description

The PAM8901 / PAM8908 stereo headphone driver is designed for

portable equipment where board space is at a premium. The

PAM8901 / 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 PAM8901 / PAM8908 delivers up to 25mW per channel into a

16

Ω load and has low 0.03% THD+N. A high power-supply rejection

ratio (80dB at 1kHz) allows this device to operate from noisy digital

supplies without an additional linear regulator.

The PAM8901 / PAM8908 operates from a single supply from 2.5V to

5.5V, has short-circuit and over temperature protection. Shutdown

mode reduces supply current to less than 1µA.

Features



Patent Pending 3 Phase Power Line Shift Charge Pump

Eliminates Need for DC-Blocking Capacitors



TrueCapFree Architecture, Output Biased at 0V (System

Ground)



Excellent Low Frequency Fidelity



80dB PSRR at 1kHz



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: U-QFN3030-16 (Type US)



Lead Free and Green Devices Available (RoHS Compliant)



Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)



Halogen and Antimony Free. “Green Device (Note 3)

Pin Assignments

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

INL-

INL+

INR+

INR-

PGND

CAP-

CAP+

PVDD

Top View

U-QFN3030-16

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

INL-

INL+

INR+

INR-

CAP-

PGND

CAP+

HPVDD

Top View

U-QFN3030-16

Applications



Smart Phones/Cellular Phones



Notebook Computers



Portable DVD Player



Personal Digital Assistants (PDAs)



Electronic Dictionaries



Digital Still Cameras



Portable Gaming

Notes:

1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.

2. See http://www.diodes.com/quality/lead_free.html

for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"

and Lead-free.

3. Halogen- and Antimony-

free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and

<1000ppm antimony compounds.

(Top View)

U-QFN3030-16 (Type US)

U-QFN3030-16 (Type US)

(Top View)