Description

The PAM8019E is a stereo 4W Class-D audio-power amplifier for

driving bridged-tied speakers and includes a stereo Class-AB

amplifier for driving headphones. With advanced 62 step DC volume

control to minimize external components, PAM8019E is capable of

allowing simple and accurate volume control over the gain range of

+20dB (Volume = 0V) to -60dB (Volume = VDD).

Integrated with spread spectrum modulation (SSM) design for EMI

suppression, the PAM8019E enables the use of inexpensive ferrite

bead filters. The integrated non-clip power limit (PLIM) technology

suppresses output automatically with programmable power limit, while

improving the sound quality and helping to protect the speakers.

The PAM8019E supports speakers open short detection during

startup to protect the whole audio system before normal operation

starts. Protection features also include undervoltage protection, DC

input protection, short-circuit protection on all audio outputs, and

thermal shutdown of the entire system.

The PAM8019E is designed to be pop free for the Class-D amplifier

and headphone driver under all kinds of operating conditions.

The PAM8019E is available in the power-efficient and space-saving

U-QFN4040-20 and U-QFN3030-20 packages

Features

• Operating Voltage: 2.5V to 6.0V

• 4W Stereo Class D with 88mW Class-AB Headphone Driver

• 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

• 40µVrms Noise of Class-D Amplifier at the max 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 Help Easily Pass EMI with Simple FB-C

• Thermal and Overcurrent Protection with Auto-Recovery

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

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

• For automotive applications requiring specific change

control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP

capable, and manufactured in IATF 16949 certified facilities),

please contact us or your local Diodes representative.

https://www.diodes.com/quality/product-definitions/

Applications

• LCD monitors and TVs

• Projectors/all-in-one computers

• Portable/active speakers

• Bone conductive headphones

• DVD players