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PDF PAM8603M Data sheet ( Hoja de datos )
| Número de pieza | PAM8603M | |
| Descripción | 3W FILTERLESS STEREO CLASS-D AUDIO AMPLIFIER | |
| Fabricantes | Diodes | |
| Logotipo |  |
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A Product Line of
Diodes Incorporated
PAM8603M
3W FILTERLESS STEREO CLASS-D AUDIO AMPLIFIER WITH DC VOLUME CONTROL
Description
The PAM8603M is a 3W, sterero, Class-D audio amplifier with DC
volume control. It offers low THD+N, allowing it to produce high-
quality sound reproduction. The new filterless architecture allows the
device to drive the speaker directly, requiring no low-pass output
filters, which saves the system cost and PCB area.
Pin Assignments
With the same numbers of external components, the efficiency of the
PAM8603M is much better than class-AB cousins. It can extend the
battery life thus ideal for portable applications.
The PAM8603M is available in SSOP-24 and SOP-18 packages.
Features
3W Output at 10% THD with a 4Ω Load and 5V Power Supply
Filterless, Low Quiescent Current and Low EMI
Low THD+N
64-Step DC Volume Control from -75dB to +24dB
Superior Low Noise
Efficiency up to 89%
Short Circuit Protection
Thermal Shutdown
Few External Components to Save the Space and Cost
Pb-Free Package
Applications
LCD Monitors/TV Projectors
Notebook Computers
Portable Speakers
Portable DVD Players, Game Machines
Cellular Phones/Speaker Phones
PAM8603M
Document number: DSxxxxx Rev. 1 - 1
1 of 14
www.diodes.com
November 2012
© Diodes Incorporated
1 page  
A Product Line of
Diodes Incorporated
PAM8603M
Typical Performance Characteristics (@TA = +25°C, unless otherwise specified.)
PAM8603M
Document number: DSxxxxx Rev. 1 - 1
5 of 14
www.diodes.com
November 2012
© Diodes Incorporated
5 Page 
A Product Line of
Diodes Incorporated
PAM8603M
Application Information (cont.)
PCB Layout Guidelines Grounding
At this stage it is paramount to notice the necessity of separate grounds. Noise currents in the output power stage need to be returned to output
noise ground and nowhere else. Were these currents to circulate elsewhere, they may get into the power supply, the signal ground, etc, even
worse, they may form a loop and radiate noise. Any of these cases results in degraded amplifier performance. The logical returns for the output
noise currents associated with Class-D switching are the respective PGND pins for each channel. The switch state diagram illustrates that
PGND is instrumental in nearly every switch state. This is the perfect point to which the output noise ground trace should return. Also note that
output noise ground is channel specific. A two channel amplifier has two seperate channels and consequently must have two seperate output
noise ground traces. The layout of the PAM8603M offers separate PGND connections for each channel and in some cases each side of the
bridge. Output noise grounds must be tied to system ground at the power exclusively. Signal currents for the inputs, reference, etc need to be
returned to quite ground. This ground is only tied to the signal components and the GND pin, and GND then tied to system ground.
Ordering Information
Part Number
PAM8603MNHR
PAM8603MDER
PAM8603MDET
Marking Information
Part Marking
PAM8603M
XXXYWWLL
PAM8603M
XXXYWWLL
PAM8603M
XXXYWWLL
Package Type
SSOP-24
SOP-18
SOP18
Standard Package
2500 Units/Tape&Reel
1000 Units/Tape&Reel
40 Units/Tube
PAM8603M
Document number: DSxxxxx Rev. 1 - 1
11 of 14
www.diodes.com
November 2012
© Diodes Incorporated
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet PAM8603M.PDF ] | |
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