|
|
PDF PAM8603A Data sheet ( Hoja de datos )
| Número de pieza | PAM8603A | |
| Descripción | ANTI-SATURATION FILTERLESS 3W CLASS-D STEREO AMPLIFIER | |
| Fabricantes | Diodes | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de PAM8603A (archivo pdf) en la parte inferior de esta página. Total 16 Páginas | ||
|
No Preview Available !
A Product Line of
Diodes Incorporated
PAM8603A
ANTI-SATURATION FILTERLESS 3W CLASS-D STEREO AMPLIFIER
WITH DC VOLUME CONTROL AND HEADPHONE OUTPUT
Description
The PAM8603A is a 3W, Class-D audio amplifier with headphone
amplifier. Advanced 64-Step DC volume control minimizes external
components and allows speaker volume control and headphone
volume control. PAM unique antisaturation technology which detects
output signal clip due to the over level input signal suppress the
output signal clip automatically. Also the antisaturation function can
adapt the output clip caused by power supply voltage down with
battery. It offers low THD+N, to produce highquality 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
PAM8603A is much better than Class-AB cousins. It can extend the
battery life thus be ideal for portable applications.
The PAM8603A is available in a SSOP-24 package.
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
• Headphone Output Function
• Unique Anti-Saturation Function
• 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
Pin Assignments
Applications
• LCD Monitors / TV Projectors
• Notebook Computers
• Portable Speakers
• Portable DVD Players, Game Machines
• VoIP/Speakers Phones
PAM8603A
Document number: DSxxxxx Rev. 1 - 2
1 of 16
www.diodes.com
November 2012
© Diodes Incorporated
1 page  
A Product Line of
Diodes Incorporated
PAM8603A
Typical Performance Characteristics (@TA = +25°C, VDD = 5V, RL = 8Ω, GV = 24dB, unless otherwise specified.)
Class-D Output
PAM8603A
Document number: DSxxxxx Rev. 1 - 2
5 of 16
www.diodes.com
November 2012
© Diodes Incorporated
5 Page 
A Product Line of
Diodes Incorporated
PAM8603A
Application Information
Test Setup for Performance Testing (Class D)
1. When the PAM8603A works with LC filters, it should be connected with the speaker before it's powered on, otherwise it will be damaged
easily.
2. When the PAM8603A works without LC filters, it's better to add a ferrite chip bead at the outgoing line of speaker for suppressing the
possible electromagnetic interference.
3. The absolute maximum rating of the PAM8603A operation voltage is 6V. When the PAM8603A is powered with four battery cells, it should
be noted that the voltage of four new dry or alkaline batteries is over 6V, higher than its maximum operation voltage, which probably make
the device damaged. Therefore, it's recommended to use either four Ni-MH (Nickel Metal Hydride) rechargeable batteries or three dry or
alkaline batteries.
4. The input signal should not be too high, if too high, it will cause the clipping of output signal when increasing the volume. Because the DC
volume control of the PAM8603A has big gain, it will make the device damaged.
5. When testing the PAM8603A without LC filters by using resistor instead of speaker as the output load, the test results, e.g. THD or efficiency,
will be worse than those using speaker as load.
Notes:
1. The Audio Precision (AP) AUX-0025 low pass filter is necessary for class-D amplifier measurement with AP analyzer.
2. Two 22μH inductors are used in series with load resistor to emulate the small speaker for efficiency measurement.
Anti-saturation Function
If the preset gain is haigher than 12dB, Anti-saturation is active by detecting the duty cycle of the PWM output when the mode been detected,
the gain is automatcally adjusted to the value that the output is not clip step by step. The maximum attenuation is -12dB (preset gain = 24dB).
The attach is immediately and the released time is 250ms per step.
Mute Operation
The MUTE pin is an input for controlling the output state of the PAM8603A. A logic low on this pin disables the outputs, and a logic high 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 PAM8603A contains shutdown circuitry to turn off the 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 PAM8603A supply current
draw will be minimized in idle mode. The SHDN pin can be left floating due to the pull-up.
For the best power on/off pop performance, the amplifier should be placed in the Mute mode prior to turning on/off the power supply.
PAM8603A
Document number: DSxxxxx Rev. 1 - 2
11 of 16
www.diodes.com
November 2012
© Diodes Incorporated
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet PAM8603A.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| PAM8603A | ANTI-SATURATION FILTERLESS 3W CLASS-D STEREO AMPLIFIER | Diodes |
| PAM8603M | 3W FILTERLESS STEREO CLASS-D AUDIO AMPLIFIER | Diodes |
| PAM8603M | 3W Filterless Stereo Class-D Audio Amplifier |  Power Analog Micoelectronics |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |