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PDF PAM8001 Data sheet ( Hoja de datos )
| Número de pieza | PAM8001 | |
| Descripción | ANTI-SATURATION FILTERLESS 2W CLASS-D STEREO AMPLIFIER | |
| Fabricantes | Diodes | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de PAM8001 (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
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A Product Line of
Diodes Incorporated
PAM8001
ANTI-SATURATION FILTERLESS 2W CLASS-D STEREO AMPLIFIER
WITH DC VOLUME CONTROL AND MAX OUTPUT POWER SETTING
Description
The PAM8001 is a 2W, class-D audio amplifier. Advanced 64-step
DC volume control minimizes external components and allows
speaker volume control. PAM unique anti-saturation technology which
detects output signal clip due to the over level input signal suppress
the output signal clip automatically. Also control the gain for set max
power. It can protect low wattage speaker from overdrive damage
even same platform with high wattage model. It offers low THD+N, to
produce high-quality sound reproduction. The new filterless
architecture allows the device to drive the speaker directly, without
low-pass output filters which will save system cost and PCB area.
With the same numbers of external components, the efficiency of the
PAM8001 is much better than class-AB cousins. It can extend the
battery life thus be ideal for portable applications.
The PAM8001 is available in SSOP-24L and QFN3*3-20L package.
Pin Assignments
Features
2W Output at 1% THD with a 4Ω Load at 5V Power Supply
Filterless, Low Quiescent Current and Low EMI
Low THD+N
64-Step DC Volume Control
Unique Anti-Saturation Function
Adjustable Max Output Power with No Clipping
Superior Low Noise
Low Pop Noise
Efficiency up to 90%
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
VoIP/Speaker Phones
All In One Computer /TV
PAM8001
Document number: DSxxxxx Rev. 1 - 0
1 of 17
www.diodes.com
February 2013
© Diodes Incorporated
1 page  
A Product Line of
Diodes Incorporated
PAM8001
Typical Operating Characteristics (@TA = +25°C, unless otherwise specified.)
PAM8001
Document number: DSxxxxx Rev. 1 - 0
5 of 17
www.diodes.com
February 2013
© Diodes Incorporated
5 Page 
Application Information (cont.)
A Product Line of
Diodes Incorporated
PAM8001
Variable
VPL
Gain Range
Gain Step Size
Attack Time (per step)
Release Time (per step)
Description
Voltage for power limit voltage, Setting by external resistor divider
Adjustable gain range of power limit and anti-saturation function
Gain step size for adjustable power limit and anti-saturation function
The minimum time between two gain decrements. (per step)
The minimum time between two gain increments. (per step)
Note: 2. Please contact Diodes for detail information.
Typical Value
0.4 to 1.2
75
Note 2
32
250
Unit
V
dB
dB
µS
mS
Anti-Saturation Function
If the preset gain is higher than power set, anti-saturation is active be detecting the duty cycle of the PWM output. When the mode has been
detected, the gain is automatically adjusted to the value that the output is not clip step by step. The attach is immediate and the release time is
250mS per step.
MUTE Operation
The MUTE pin is an input for controlling the output state of the PAM8001. A logic low on this pin disables the outputs, and a logic high on this
pin enables the outputs. This pin may be used as a quick disable or enable of the outputs without a volume fade. Quiescent current is listed in
the electrical characteristic table. The MUTE pin can be left floating due to the internal pull-up
Shutdown Operation
In order to reduce power consumption while not in use, the PAM8001 contains shutdown circuitry to turn off amplifier’s bias circuitry. The
amplifier is turned off when logic low is placed on the SHDN pin. By switching the SHDN pin connected to GND, the PAM8001 supply current
draw will be minimized in idle mode. The SHDN pin can be left floating due to the internal pull-up.
PAM8001
Document number: DSxxxxx Rev. 1 - 0
11 of 17
www.diodes.com
February 2013
© Diodes Incorporated
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet PAM8001.PDF ] | |
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