PAM8803 Class-D Audio Amplifier Board User s Guide

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*W @4Ω PAM8803 Class-D Audio Amplifier Board User s

1 PAM8803 Class-D Audio Amplifier Board User s Guide Sure Electronics Inc. AA-AB33&AA-AB333_Ver.0

2 PAM8803 CLASS-D AUDIO AMPLIFIER BOARD USER S GUIDE Table of Contents Chapter. Overview.... Overview.... Features....3 Applications Benefits Quick Start... 3 Chapter. Hardware Detail...5. Power Connection Input Connection Output Connections Mute Settings Sleep Settings Volume Control Settings....7 Volume Control....8 LED Indicator Notes... 4 Chapter 3. Electrical Characteristics...5 Chapter 4. Mechanical Drawing...7 Chapter 5. Appendix...8 Chapter 6. Contact Us Sure Electronics Inc. AA-AB33&AA-AB333_Ver.0_Page i

3 PAM8803 Class-D Audio Amplifier Board NOTES: Product Version : Ver.0 Document Version : Ver.0 AA-AB33&AA-AB333_Ver.0_Page ii Sure Electronics Inc

*W @4Ω PAM8803 CLASS-D AUDIO AMPLIFIER BOARD USER S GUIDE Chapter. Overview. Overview Thanks for using *W audio amplifier board series.

4 PAM8803 CLASS-D AUDIO AMPLIFIER BOARD USER S GUIDE Chapter. Overview. Overview Thanks for using *W audio amplifier board series. Each member is a high-quality dual-channel class-d audio amplifier board capable of delivering W per channel of output power into a 4Ω load. It employs PAM s PAM8803 IC which offers 64-step digital volume control and low THD+N, allowing it to produce high-quality sound reproduction. It s especially suitable for small speakers. This amplifier board can also be used to drive passive 4Ω or 8Ω speakers. TABLE - *W AUDIO AMPLIFIER BOARD SERIES Product No. Product Name AA-AB33 PAM8803 Class-D Audio Amplifier Full-featured Board AA-AB333 PAM8803 Class-D Audio Amplifier Simple Board FIGURE - OVERVIEW OF AA-AB Sure Electronics Inc. AA-AB33&AA-AB333_Ver.0_Page

*W @4Ω PAM8803 Class-D Audio Amplifier Board FIGURE - OVERVIEW OF AA-AB333 FIGURE - ACCESSORY Note: All the diagrams in this manual are for reference only.

5 PAM8803 Class-D Audio Amplifier Board FIGURE - OVERVIEW OF AA-AB333 FIGURE - ACCESSORY Note: All the diagrams in this manual are for reference only.. Features A perfect Class D architecture Fully-bridged stereo output power supply: AA-AB33: Wide power supply range: DC4.5V tov via a power port Two to three AA batteries or DC.5V to 4.0V via a terminal block AA-AB333: Two to three AA batteries or DC.5V to 4.0V via a terminal block Two kinds of input: Line level input via 50 connector Audio input via 3.5 headphone jack Frequency response: 0Hz to 0KHz(±3dB) Signal/Noise Ratio: 85dB (f= to KHz, THD=%) High Output 8Ω, < 0.0% 4Ω, < 0.0% THD+N High Efficiency 8Ω AA-AB33&AA-AB333_Ver.0_Page Sure Electronics Inc

6 Overview 4Ω Audiophile Quality Sound 0.9% 0.5W 8Ω 0.7% 4Ω Volume control: Volume control buttons External rotary encoder daughter board Over/under voltage turn off Over current protection Over temperature protection.3 Applications Home Active Speaker Home Theater Receiver Multi-channel Distribution Active DVD System Mini/micro Systems.4 Benefits Mounting holes facilitate installation and fixing Several wiring methods facilitate connection Excellent heat dissipation eliminate the requirement of an extra heat sink Tactile switches for volume control are adjustable.5 Quick Start Suggested connection is shown in figure -4 and figure -5. FIGURE -4 CONNECTION (AA-AB33) Sure Electronics Inc. AA-AB33&AA-AB333_Ver.0_Page 3

7 PAM8803 Class-D Audio Amplifier Board FIGURE -5 CONNECTION (AA-AB333) Note: Please observe the following steps to complete verification so as to ensure the products are intact during transit.. Open the amplifier package and make sure the product is intact (No missing or damaged components and no deformation). Please observe the connection schematics when connecting the amplifier board. Use a nearby sound source, such as MP3 or CD player to have a trial. This amplifier board can be deemed as qualified if you can hear the sound corresponding to that sound source. 3. Ensuring the long life time, load connection is recommended before the power is turned on. 4. GND should be grounded or connected to the housing of the device. 5. The mounting holes of this product should be grounded. AA-AB33&AA-AB333_Ver.0_Page Sure Electronics Inc

*W @4Ω PAM8803 CLASS-D AUDIO AMPLIFIER BOARD USER S GUIDE Chapter. Hardware Detail.

On-board diodes can prevent the consequence of wrong connection of power supply.

8 PAM8803 CLASS-D AUDIO AMPLIFIER BOARD USER S GUIDE Chapter. Hardware Detail. Power Connection To power the amplifier board, use either jack or terminal blocks. On-board diodes can prevent the consequence of wrong connection of power supply. FIGURE - POWER CONNECTION (AA-AB33) FIGURE - POWER CONNECTION (AA-AB333) TABLE - POWER PORT Connector Mark Description Jack (AA-AB33) J9 DC 4 to power supply Terminal Blocks Vbatt The positive of to 3 AA batteries (AA-AB33, J AA-AB333) GND The negative of to 3 AA batteries Sure Electronics Inc. AA-AB33&AA-AB333_Ver.0_Page 5

*W @4Ω PAM8803 Class-D Audio Amplifier Board Note:. You are allowed to use only one way to power the amplifier board at a time.. The maximum supply voltage shall not exceed 4V. 3.

5mm headphone jack for audio signal input or use 50 socket s mounting holes for line level audio input.

9 PAM8803 Class-D Audio Amplifier Board Note:. You are allowed to use only one way to power the amplifier board at a time.. The maximum supply voltage shall not exceed 4V. 3. One less than 6V battery or more connected in series can be used to power the board. The minimum limited number is AA batteries.. Input Connection You may use 3.5mm headphone jack for audio signal input or use 50 socket s mounting holes for line level audio input. FIGURE -3 INPUT CONNECTION (AA-AB33) FIGURE -4 INPUT CONNECTION (AA-AB333) TABLE - INPUT PORT Connector Mark Description Lin Left Channel Input Mounting Holes (J4) GND GND Rin Right Channel Input 3.5mm Headphone Jack J7 Left and Right Channel Input Note: You are allowed to feed only one group (dual channel) of audio signal to the amplifier board at a time..3 Output Connections You may use either terminal blocks for audio signal output or use mounting holes when this board is used as a daughter board. AA-AB33&AA-AB333_Ver.0_Page Sure Electronics Inc

Hardware Detail FIGURE -5 OUTPUT CONNECTION (AA-AB33) FIGURE -6 OUTPUT CONNECTION (AA-AB333) TABLE -3 OUTPUT PORT Connector Mark Mounting holes (J8) Terminal Blocks* LOUT+ LOUT- ROUT+ ROUT- J

Note:. Never connect more than one group of speaker to the audio output.. * Refer to on-board descriptions for connection details..4 Mute Settings The hole for MUTE is reserved on the board.

10 Hardware Detail FIGURE -5 OUTPUT CONNECTION (AA-AB33) FIGURE -6 OUTPUT CONNECTION (AA-AB333) TABLE -3 OUTPUT PORT Connector Mark Mounting holes (J8) Terminal Blocks* LOUT+ LOUT- ROUT+ ROUT- J J3 Description Positive Output of Left Channel Negative Output of Left Channel Negative Output of Right Channel Positive Output of Right Channel Output of Left Channel Output of Right Channel Note:. Never connect more than one group of speaker to the audio output.. * Refer to on-board descriptions for connection details..4 Mute Settings The hole for MUTE is reserved on the board. To mute the output audio signal, connect GND and MUTE of the terminal block with a piece of lead. Usually, MUTE shall be left unconnected Sure Electronics Inc. AA-AB33&AA-AB333_Ver.0_Page 7

11 PAM8803 Class-D Audio Amplifier Board FIGURE -7 MUTE SETTINGS (AA-AB33) FIGURE -8 MUTE SETTINGS (AA-AB333) AA-AB33&AA-AB333_Ver.0_Page Sure Electronics Inc

Hardware Detail TABLE -4 MUTE SETTINGS Connector Mark Description J6 MUTE When MUTE is connected with GND, both channels will be muted and enter into idle mode.

12 Hardware Detail TABLE -4 MUTE SETTINGS Connector Mark Description J6 MUTE When MUTE is connected with GND, both channels will be muted and enter into idle mode. When connected with high level or left unconnected, both channels will resume regular operation. Note: Never connect MUTE to any power supply or voltage higher than +5V..5 Sleep Settings Two kinds of connection and installation are available: mounting holes and DIP switches. To enable sleep settings, connect GND and SHDN of the terminal block with a piece of lead. Usually, SHDN shall be left unconnected. FIGURE -9 SLEEP SETTINGS (AA-AB33) Sure Electronics Inc. AA-AB33&AA-AB333_Ver.0_Page 9

*W @4Ω PAM8803 Class-D Audio Amplifier Board FIGURE -0 SLEEP SETTINGS (AA-AB333) TABLE -5 SLEEP SETTINGS Connector Mark Description J6 SHDN When SHDN is connected with GND, the chip will be set to

13 PAM8803 Class-D Audio Amplifier Board FIGURE -0 SLEEP SETTINGS (AA-AB333) TABLE -5 SLEEP SETTINGS Connector Mark Description J6 SHDN When SHDN is connected with GND, the chip will be set to SLEEP and enter low-power-consumption working mode. When SHDN is connected with high level or left unconnected, the chip will resume regular operation. Settings of DIP switches are shown as follows. AA-AB33&AA-AB333_Ver.0_Page Sure Electronics Inc

14 Hardware Detail FIGURE - SETTINGS OF DIP SWITCHES (AA-AB33) FIGURE - SETTINGS OF DIP SWITCHES (AA-AB333) TABLE -6 SETTINGS OF DIP SWITCHES SHDN Settings K Function ON Sleep mode OFF Working mode Sure Electronics Inc. AA-AB33&AA-AB333_Ver.0_Page

*W @4Ω PAM8803 Class-D Audio Amplifier Board Note: SLEEP means that the chip works with low power consumption. MUTE means that the chip normally works with no output.

15 PAM8803 Class-D Audio Amplifier Board Note: SLEEP means that the chip works with low power consumption. MUTE means that the chip normally works with no output..6 Volume Control Settings On-board -slide DIP switches marked as SW3 is used for volume control. K is used to set volume and K used to set the SHDN of the chip. FIGURE -3 VOLUME CONTROL SETTINGS (AA-AB33) TABLE -7 VOLUME CONTROL SETTINGS (AA-AB33) Volume Control Settings K Function ON Disable the tactile switches OFF Enable the tactile switches for volume control Note: When K is ON, the chip will amplify the audio signal with 4dB gain and the tactile switches are disabled..7 Volume Control Two kinds of control input are provided to control volume: on-board tactile switches and external rotary encoder control daughter board interface. AA-AB33&AA-AB333_Ver.0_Page Sure Electronics Inc

Hardware Detail FIGURE -4 VOLUME CONTROL (AA-AB33) TABLE -8 VOLUME CONTROL (AA-AB33) Connector Mark Description SW UP Tactile Switch for Volume Increase SW DOWN Tactile Switch for Volume Decrease VDD

16 Hardware Detail FIGURE -4 VOLUME CONTROL (AA-AB33) TABLE -8 VOLUME CONTROL (AA-AB33) Connector Mark Description SW UP Tactile Switch for Volume Increase SW DOWN Tactile Switch for Volume Decrease VDD 4.V Voltage Output J5 GND GND UP Volume Increase Input (Low Level Valid) DOWN Volume Decrease Input (Low Level Valid) TABLE -9 CORRESPONDING GAIN OF EACH STEP OF VOLUME CONTROL Step Gain(dB) Step Gain(dB) Step Gain(dB) Step Gain(dB) Sure Electronics Inc. AA-AB33&AA-AB333_Ver.0_Page 3

17 PAM8803 Class-D Audio Amplifier Board.8 LED Indicator This amplifier has one power LED indicator which is marked Power (D4). The power indicator will be illuminated in green when power-up. Please refer to the connection schematic of the board for the LED location..9 Notes In order to protect amplifier board and extend its service lifetime, please read the following warnings carefully since warranties will be voided if you do not observe the following warnings: Warning : Quality-related issues caused by potentiometers installed by buyers. Warning : In order to achieve a better sound quality, please use stable power supply since a bad or unstable power supply may worsen the sound quality or even cripple the amplifier board. Warning 3: Never equip a pre-amplifier to the audio input since the amplifier itself has powerful amplification ability and a high signal input will burn out the amplifier chip. Warning 4: In order to protect amplifier and speaker, please turn the volume output to the minimum when hooking up the amplifier and you may readjust the volume when you are sure that the amplifier is functioning properly. AA-AB33&AA-AB333_Ver.0_Page Sure Electronics Inc

18 PAM8803 CLASS-D AUDIO AMPLIFIER BOARD USER S GUIDE Chapter 3. Electrical Characteristics Following table lists all typical data. For full specification, please refer to the PAM s data sheet of PAM8803 chip. T A =0, f=000hz RL=4Ω, f=000hz, Sine wave input, RL=4Ω (unless otherwise stated) FIGURE 3- ELECTRICAL CHARACTERISTICS Parameter Condition Min. Typ. Max. Supply Voltage AA-AB33-4V - V AA-AB33 AA-AB V Quiescent Current AA-AB33 AA-AB333 DCV, NO load - 00mA - MUTE=0-0mA 40mA AA batt, NO load - 0mA - MUTE=0-0mA 0mA Signal/Noise Ratio dB - Input Sensitivity A=0dB V - THD+N* RL=4Ω, Pout=W % - RL=8Ω, Pout=0.5W % - Frequency Range - 0HZ to 0KHz (±3dB) Efficiency Output Power THD+N<% THD+N<0% RL=4Ω, Pout=.6W - 88% - RL=8Ω, Pout=.5W - 85% - RL=4Ω, f=000hz -.5W - RL=8Ω, f=000hz -.0W - RL=4Ω, f=000hz -.0W - RL=8Ω, f=000hz -.W - Input Impedance K - Minimum Load - 3.ohm - - High-level input SHUD, UP, -.V - - voltage DOWM, Low-level input MUTE* V voltage Channel Separation* Po=W, RL=4ohm 60dB 80dB Sure Electronics Inc. AA-AB33&AA-AB333_Ver.0_Page 5

19 PAM8803 Class-D Audio Amplifier Board Power Gain* Volume Adjustable Volume not adjustable K=OFF -75dB - 3.8dB K=ON -.6dB - Operating Temperature Storage Temperature Thermal Shutdown* Note: *The chip specifications from PAM s PAM8803 Data Sheet. AA-AB33&AA-AB333_Ver.0_Page Sure Electronics Inc

*W @4Ω PAM8803 CLASS-D AUDIO AMPLIFIER BOARD USER S GUIDE Chapter 4.

20 PAM8803 CLASS-D AUDIO AMPLIFIER BOARD USER S GUIDE Chapter 4. Mechanical Drawing FIGURE 4- MECHANICAL DRAWING Sure Electronics Inc. AA-AB33&AA-AB333_Ver.0_Page 7

21 PAM8803 CLASS-D AUDIO AMPLIFIER BOARD USER S GUIDE Chapter 5. Appendix FIGURE 5- SCHEMATIC VCC VCC C + C uf/50v 0uF/5V/TAN J OUT_L+ OUT_R- OUT_L- 4 U +OUT_L -OUT_L VDD 8 GND PVDD PGND PGND +OUT_R 4 -OUT_R OUT_R+ VCC D SS4 J CON CON C3 INL C5 MUTE SHDN uf/50v 8 uf/50v INL 0 VREF 6 MUTE 9 SHDN NC NC NC NC VDD 7 PAM8803 INR 4 UP 3 DN 5 RST PGND PGND C4 uf/50v RST UP INR DN J3 CON SW 3 3 SW INL INR VCC VCC R7 R8 J4 3 CON3 6 VCC 0 3 VCC C6 uf/50v C7 + 0uF/5V/TAN VCC DN UP 6.8K 6.8K VCC R VCC J5 con4 4 3 R MUTE 6.8K SHDN J6 J7 3 PHONEJACK STEREO INL INR RST SHDN 6.8K SW3 4 3 SW DIP-/SM CON J8 con4 J9 DJ005B 3 D SS4 C9 + 00uF/6V C 04 R3 04 U SW VCC VSS FB EN L 33uH D3 SS4 VCC R5 6.8K FB R6 + C8 0uF/0V C0 uf/50v VCC R4 470R D4 LED/G OUT_L+ OUT_L- OUT_R- OUT_R K AX30/SOT89-5L FB Note: The schematic is for reference only. AA-AB33&AA-AB333_Ver.0_Page Sure Electronics Inc.

22 PAM8803 CLASS-D AUDIO AMPLIFIER BOARD USER S GUIDE Chapter 6. Contact Us Sure Electronics Co., Ltd. 5F, Zone A, Qinhuai Technology Innovation Center 05- DaMing Rd (ZIP:00) Nanjing P.R.China Tel: (For technical questions only) (English service, from GMT-0AM) Fax: Website: Sure Electronics Inc. AA-AB33&AA-AB333_Ver.0_Page 9

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