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PAM8408 (Obsolete)

Alternative Part: PAM8019E,

3W Stereo Differential Input Class D with Memory Up/Down Volume Control

Datasheet

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Description

The PAM8408 is a filter-less Class-D amplifier with high SNR and differential input that helps eliminate noise. Advanced 32-step Up/Down volume control minimizes external components and allows speaker volume control. The gain will held when the chip is in shutdown mode.

The PAM8408 supports 2.5V to 6V operation make it idea for up to 4 cells alkaline battery applications.

Features like greater than 87% efficiency and small PCB area make the PAM8408 Class-D amplifier ideal for portable applications. The output uses a filter-less architecture minimizing the number of external components and PCB area whilst providing a high performance, simple and lower cost system.

The PAM8408 built in auto recovery SCP (short circuit protection) and thermal shutdown.

The PAM8408 is available in SO-16L package.

Feature(s)

3W Output at 10% THD with a 4Ω Load and 5V Supply
2.4W Output at 1% THD with a 4Ω Load and 5V Supply
2.5V to 6.0V VDD Operating
Fully Differential Input
Filter-less, Low Quiescent Current and Low EMI
Low THD+N
32-Step Memory Up/Down Volume Control from -80dB to 24dB
Superior Low Noise: 60uV
Minimize Pop/Clip Noise
Auto Recovery Short Circuit Protection
Thermal Shutdown
Pb-Free SO-16L Package

Application(s)

PC Speaker
Wireless Speaker
Home Sound Systems
Active Speakers
Docking Stations

Specifications & Technical Documents

Product Parameters

Anti-Sat	No
Architecture	Class D
BTL	Yes
Class-D or AB	D
Compliance (Only Automotive Supports PPAP)	Standard
Efficiency (%)	87
Gain Max	24
Gain Min	-80
Headphone Out	No
I_{Q (mA)}	8
Maximum V_DD (V)	6
Minimum V_DD (V)	2.5
Mono or Stereo	Stereo
Power Limit	No
Power/CH (W) @ THD=1%	2.4
Power/CH (W) @ THD=10%	3
PSRR	70
AEC Qualified	No
SE	No
SNR	90
Volume/ Gain	Up/Down (w/Memory)

Technical Documents

Recommended Soldering Techniques

TN1.pdf

Purchase & Availability

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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-2770	2025-10-30	2025-10-30	Add Fab Site Code, Country of Diffusion (COD) and Assembly Site Origin (ASO) on Product and Shipping Labels for all Diodes Products
PCN-2723	2025-03-10	2025-09-10	Product End of Life (EOL)
PCN-2512	2021-04-16	2021-07-16	Qualified Additional Assembly & Test (A/T) Site