IS31AP4066D CLASS-AB AUDIO AMPLIFIER

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1 ISAP466D CLASS-AB AUDIO AMPLIFIER DESCRIPTION The ISAP466D demo board is a fully assembled and tested PCB that uses the ISAP466D Class-AB dual bridge-connected audio power amplifier. Designed to drive speaker impedance of 8Ω or larger. The demo board provides dual BTL output, capable of delivering.6w into an 8Ω speaker at 5V. FEATURES Supply voltage range from.7v to 5.5V Delivers.6W into an 8Ω speaker at 5V supply (THD+N=%) Delivers.W into an 8Ω speaker at 5V supply (THD+N=%) Available in QFN-6 (mm mm) package QUICK START RECOMMENDED EQUIPMENT 5.V, A power supply Audio source (i.e. MP player, Notebook PC, etc.) 8Ω or larger speaker ABSOLUTE MAXIMUM RATINGS 5.5V power supply 8Ω speaker Caution: Do not exceed the conditions listed above; otherwise the board will be damaged. PROCEDURE The ISAP466D demo board is fully assembled and tested. Follow the steps listed below to verify board operation. Caution: Do not turn on the power supply until all connections are completed. ) Connect 8Ω (or larger) speakers across the (OUTA+, OUTA-) terminal and (OUTB+, OUTB-) terminal. Or connect speakers to the connector (OUTA, OUTB). ) Connect the ground terminal of the power supply to the and the positive terminal to the VCC. Or connect DC power to connector (DC CON). ) Connect the audio sources to the INA terminal (left channel) and INB terminal (right channel); or connect audio sources to the connector (AUDIO IN). 4) Turn on the power supply. 5) Turn on the audio sources. Figure : Photo of ISAP466D Evaluation Board ORDERING INFORMATION Part No. Temperature Range Package ISAP466D-QFLS-EB -4 C to +85 C (Industrial) QFN-6, Lead-free Table : Ordering Information For pricing, delivery, and ordering information, please contacts ISSI s analog marketing team at analog@issi.com or (48) Integrated Silicon Solution, Inc. Rev. A, /9/5

2 ISAP466D CLASS-AB AUDIO AMPLIFIER DETAILED DESCRIPTION The ISAP466D demo board features the ISAP466D Class-AB power amplifier IC, designed to drive speaker impedance of 8Ω or larger. CUSTOMIZING THE GAIN The ISAP466D demo board is shipped with a gain of 8.dB and is set by resistors R I (R, R ) and R F (R, R 4 ). Change resistors R I and R F to reconfigure the gain of the board.gain determined in Equation () and refer to ISAP466D data sheet for more detail. RF V G ain () R I V HIGH-PASS FILTER The input capacitors C I (C 5, C 6 ) and input resistors R I (R, R ) form a high-pass filter with the corner frequency, f C determined in Equation (). f c R C () I I SHUTDOWN MODE Jumper (J) controls the shutdown pin of the ISAP466D IC. Connect the shunt across pin and of the jumper (J) to enter the shutdown mode of the board. R 8K VCC C C VCC uf.uf C.uF R5 K J CLOSE=SD 4 8 INA BYPASS VDD VDD -OUTA +OUTA +OUTB 9 INB -OUTB INA C5 5nF R K C4 uf U SD SPEAKER INB C6 5nF R K SPEAKER ISAP466D R4 8K Figure : ISAP466D Application Circuit Integrated Silicon Solution, Inc. Rev. A, /9/5

3 ISAP466D CLASS-AB AUDIO AMPLIFIER BILL OF MATERIALS Name Symbol Description Qty Supplier Part No. Amplifier U Class- AB power amplifier ISSI ISAP466D Resistor R,R RES,k,/6W,±%,SMD Yageo RC6JR-7KL Resistor R,R4 RES,8k,/6W,±%,SMD Yageo RC6JR-78KL Resistor R5 RES,k,/6W,±5%,SMD Yageo RC6FR-7KL Capacitor C CAP,µF,V,±%,SMD Yageo CC85KKX7R6BB6 Capacitor C,C CAP,.µF,5V,±%,SMD Yageo CC6KKX7R9BB4 Capacitor C4 CAP,µF,5V,±%,SMD Yageo CC6KKX7R9BB5 Capacitor C5,C6 CAP,5nF,5V,±%,SMD Yageo CC6KKX7R9BB5 Connector DC IN.5 mm DC connector Connector OUTA,OUTB RCA type connector Connector AUDIO IN.5mm min connector Bill of materials, refers to Figure above. Integrated Silicon Solution, Inc. Rev. A, /9/5

4 ISAP466D CLASS-AB AUDIO AMPLIFIER Figure : Board Component Placement Guide - Top Layer Figure 4: Board PCB Layout - Top Layer Integrated Silicon Solution, Inc. 4 Rev. A, /9/5

5 ISAP466D CLASS-AB AUDIO AMPLIFIER Figure 5: Board Component Placement Guide - Bottom Layer Figure 6: Board PCB Layout - Bottom Layer Copyright 5 Integrated Silicon Solution, Inc. All rights reserved. ISSI reserves the right to make changes to this specification and its products at any time without notice. ISSI assumes no liability arising out of the application or use of any information, products or services described herein. Customers are advised to obtain the latest version of this device specification before relying on any published information and before placing orders for products. Integrated Silicon Solution, Inc. does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless Integrated Silicon Solution, Inc. receives written assurance to its satisfaction, that: a.) the risk of injury or damage has been minimized; b.) the user assume all such risks; and c.) potential liability of Integrated Silicon Solution, Inc is adequately protected under the circumstances Integrated Silicon Solution, Inc. 5 Rev. A, /9/5