Manual

ManualsBrandsDiodes ManualsHardwarePAM8303D

PAM8303D

Document number: DSxxxxx Rev. 1 - 7

1 of 16

www.diodes.com

November 2012

PAM8303D

Product Line o

Diodes Incorporated

ULTRA LOW EMI, 3W FILTERLESS

MONO CLASS-D AUDIO POWER AMPLIFIER

Description

The PAM8303D is a 3W mono filterless Class-D amplifier with high

PSRR and differential input that eliminate noise and RF rectification.

Features like 90% efficiency and small PCB area make the

PAM8303D Class-D amplifier ideal for cellular handsets. The filterless

architecture requires no external output filter, fewer external

components, less PCB area and lower system costs, and simplifies

application design.

The PAM8303D features short circuit protection and thermal

shutdown.

The PAM8303D is available in MSOP-8 and DFN3x3 8-pin packages.

Features

• Ultra Low EMI, -20dB Better Than FCC Class-B @ 300MHz

• High Efficiency up to 90% @1W with an 8Ω Speaker

• Shutdown Current <1µA

• 3W@10% THD Output with a 4Ω Load at 5V Supply

• Demanding Few External Components

• Superior Low Noise without Input

• Supply Voltage from 2.8V to 5.5V

• Short Circuit Protection

• Thermal Shutdown

• Available in Space Saving Packages: MSOP-8, DFN3x3-8

• Pb-Free Package

Pin Assignments

Applications

• Cellular Phones/Smart Phones

• MP4/MP3

• GPS

• Digital Photo Frame

• Electronic Dictionary

• Portable Game Machines

Summary of content (16 pages)

PAGE 1
A Product Line of Diodes Incorporated PAM8303D ULTRA LOW EMI, 3W FILTERLESS MONO CLASS-D AUDIO POWER AMPLIFIER Description Pin Assignments The PAM8303D is a 3W mono filterless Class-D amplifier with high PSRR and differential input that eliminate noise and RF rectification. Features like 90% efficiency and small PCB area make the PAM8303D Class-D amplifier ideal for cellular handsets.
PAGE 2
A Product Line of Diodes Incorporated PAM8303D Typical Applications Circuit Pin Descriptions Pin Name OUT+ PVDD VDD ININ+ SD GND OUT- Pin Number 1 2 3 4 5 6 7 8 Function Positive BTL Output Power Supply Analog Power Supply Negative Differential Input Positive Differential Input Shutdown Terminal (active low) Ground Negative BTL Output Functional Block Diagram PAM8303D Document number: DSxxxxx Rev. 1 - 7 2 of 16 www.diodes.
PAGE 3
A Product Line of Diodes Incorporated PAM8303D Absolute Maximum Ratings (@TA = +25°C, unless otherwise specified.) These are stress ratings only and functional operation is not implied. Exposure to absolute maximum ratings for prolonged time periods may affect device reliability. All voltages are with respect to ground. Parameter Supply Voltage Input Voltage Maximum Junction Temperature Storage Temperature Soldering Temperature Rating 6.0 Unit V -0.3 to VDD +0.
PAGE 4
A Product Line of Diodes Incorporated PAM8303D Electrical Characteristics (@TA = +25°C, VDD = 5V, Gain = 2V/V, RL = L(33µH) + R + L(33µH), unless otherwise specified.) Symbol VDD Parameter Test Conditions THD+N = 1%, f = 1KHz, R = 4Ω Output Power THD+N = 10%, f = 1KHz, R = 8Ω THD+N = 1%, f = 1KHz, R = 8Ω VDD = 5.0V 2.85 3.00 VDD = 3.6V 1.65 1.80 VDD = 3.2V 1.20 1.35 VDD = 5.0V 2.50 2.66 VDD = 3.6V 1.15 1.30 VDD = 3.2V 0.85 1.0 VDD = 5.0V 1.65 1.80 VDD = 3.6V 0.75 0.90 VDD = 3.
PAGE 5
A Product Line of Diodes Incorporated PAM8303D Typical Performance Characteristics (@TA = +25°C, VDD = 5V, f = 1kHz, Gain = 2V/V, unless otherwise specified.) PAM8303D Document number: DSxxxxx Rev. 1 - 7 5 of 16 www.diodes.
PAGE 6
A Product Line of Diodes Incorporated PAM8303D Typical Performance Characteristics (cont.) (@TA = +25°C, VDD = 5V, f = 1kHz, Gain = 2V/V, unless otherwise specified.) PAM8303D Document number: DSxxxxx Rev. 1 - 7 6 of 16 www.diodes.
PAGE 7
A Product Line of Diodes Incorporated PAM8303D Typical Performance Characteristics (cont.) (@TA = +25°C, VDD = 5V, f = 1kHz, Gain = 2V/V, unless otherwise specified.) PAM8303D Document number: DSxxxxx Rev. 1 - 7 7 of 16 www.diodes.
PAGE 8
A Product Line of Diodes Incorporated PAM8303D Typical Performance Characteristics (cont.) (@TA = +25°C, VDD = 5V, f = 1kHz, Gain = 2V/V, unless otherwise specified.) PAM8303D Document number: DSxxxxx Rev. 1 - 7 8 of 16 www.diodes.
PAGE 9
A Product Line of Diodes Incorporated PAM8303D Typical Performance Characteristics (cont.) (@TA = +25°C, VDD = 5V, f = 1kHz, Gain = 2V/V, unless otherwise specified.) PAM8303D Document number: DSxxxxx Rev. 1 - 7 9 of 16 www.diodes.
PAGE 10
A Product Line of Diodes Incorporated PAM8303D Application Information Test Setup for Performance Testing Notes 1. The 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. Input Resistance (RI) The input resistors (RI) set the gain of the amplifier according to Equation 1.
PAGE 11
A Product Line of Diodes Incorporated PAM8303D Application Information (cont.) Decoupling Capacitor (CS) The PAM8303D is a high-performance CMOS audio amplifier that requires adequate power supply decoupling to ensure the output total harmonic distortion (THD) as low as possible. Power supply decoupling also prevents the oscillations causing by long lead length between the amplifier and the speaker.
PAGE 12
A Product Line of Diodes Incorporated PAM8303D Application Information (cont.) PCB Layout Guidelines Grounding It is recommended to use plain grounding or separate grounds. Do not use one line connecting power GND and analog GND. Noise currents in the output power stage need to be returned to output noise ground and nowhere else. When these currents circulate elsewhere, they may get into the power supply, or the signal ground, etc, even worse, they may form a loop and radiate noise.
PAGE 13
A Product Line of Diodes Incorporated PAM8303D Ordering Information Part Number PAM8303DBYC PAM8303DBSC Part Marking P8303D XXXYW P8303D XXXYW Package Type Standard Package DFN3x3-8 3000 Units/Tape&Reel MSOP-8 2500 Units/Tape&Reel Marking Information PAM8303D Document number: DSxxxxx Rev. 1 - 7 13 of 16 www.diodes.
PAGE 14
A Product Line of Diodes Incorporated PAM8303D Package Outline Dimensions (All dimensions in mm.) MSOP-8 PAM8303D Document number: DSxxxxx Rev. 1 - 7 14 of 16 www.diodes.
PAGE 15
A Product Line of Diodes Incorporated PAM8303D Package Outline Dimensions (cont.) (All dimensions in mm.) DFN3x3-8 PAM8303D Document number: DSxxxxx Rev. 1 - 7 15 of 16 www.diodes.
PAGE 16
A Product Line of Diodes Incorporated PAM8303D IMPORTANT NOTICE DIODES INCORPORATED MAKES NO WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, WITH REGARDS TO THIS DOCUMENT, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION).