IS31AP4913 3D AND BASS ENHANCE STEREO HEADPHONE DRIVER EVALUATION BOARD GUIDE DESCRIPTION RECOMMENDED EQUIPMENT The IS31AP4913 evaluation board is a fully assembled and tested PCB. The IS31AP4913 is a high quality stereo headphone driver with 3D and bass enhance designed to allow the removal of the output DC-blocking capacitors for reduced component count and cost. The features 3D and bass can be externally adjusted via a simple RC network. ABSOLUTE MAXIMUM RATINGS ≤ 5.5V power supply Caution: Do not exceed the conditions listed above; otherwise the board will be damaged. FEATURES 5.0V, 2A power supply Audio source (i.e. MP3 player, Notebook PC, etc.) Headphone (32Ω) Supply voltage range from 2.7V to 5.5V Low output noise (8µV) High SNR (102dB) -92dB PSRR No output DC-blocking capacitors Pulse Count Control serial interface Available in QFN-20(3mm × 3mm) package PROCEDURE Follow the steps listed below to verify IS31AP4913 evaluation board operation. Caution: Do not turn on the power supply until all connections are completed. 1) 2) QUICK START 3) 4) 5) Connect headphone (32Ω) to the connector (HP Jack). Connect the ground terminal of the power supply to the GND and the positive terminal to the VCC. Or connect DC power to connector (DC IN). Connect the audio sources to the INR terminal (right channel) and INL terminal (left channel); or connect audio sources to the connector (AUDIO IN). Turn on the power supply, and pay attention to the supply current. If the current exceeds 200mA, please check for circuit fault. Turn on the audio sources. Figure 1: Photo of IS31AP4913 Evaluation Board ORDERING INFORMATION Part No. Temperature Range Package IS31AP4913-QFLS2-EB -40°C to +85°C (Industrial) QFN-20, Lead-free Table 1: Ordering Information For pricing, delivery, and ordering information, please contacts ISSI’s analog marketing team at [email protected] or (408) 969-6600. Integrated Silicon Solution, Inc. – www.issi.com Rev. A, 12/31/2014 1 IS31AP4913 3D AND BASS ENHANCE STEREO HEADPHONE DRIVER EVALUATION BOARD GUIDE PERFORMANCE DESCRIPTION SOFTWARE SUPPORT The IS31AP4913 evaluation board has six buttons to switch between the different modes. The operating mode is indicated by an LED illuminated above the appropriate buttons. The (1~4) modes are perform by IS31AP4913. Please refer to the integrated program. 1) 2) 3) 4) 5) Note: Please refer to the datasheet to get more information about IS31AP4913. (Default mode) normal: basic operating mode 3D mode: enable 3D enhance function. Bass mode: enable bass enhance function. 3D&Bass: enable 3D and bass enhance function. 2111: use the output DC-blocking capacitors headphone amplifier (HWD2111) drive headphone DIR: use the input audio source direct drive headphone. 6) Note: The IS31AP4913 headphone driver provides solely audio function capability on the evaluation board. TP1 VCC CON1 DC IN VCC C2 10uF D7 SS16 TP2 VDD SD 3V 5 C8 1uF 2 C9 10nF C10 1uF 4 BP R4 1k 2 VOUT 9 2 EN_DIR 1 3 Q1 NPN_3904 1 GND GND 3 U3 10 VCC COM1 COM2 10 VCC U2 VCC S1 1 COFF1 COFF2 CON2 CON1 NC NC 3 INR 8 INL VDD C1 0.1uF 4 OUTR 7 OUTL INR C4 0.47uF C5 0.47uF R3 100k DATA2111 6 4 CLK2111 7 EN2111 INL 6 5 RELAY VOUT1 VOUT2 2 R1 1 0R C3 22uF OUTL R2 9 0R C6 22uF OUTR VIN1 8 VIN2 BYPASS UP/DN CLOCK SDB GND 3 5 C7 0.47uF 2111 LDO C23 6.8pF R22 120k U4 3V 3V 12 11 10 9 8 4 3 2 TP9 15 5 4 3 2 1 C11 0.1uF VSS 5 3V EN2111 DATA2111 RST GND C22 22nF P1.0/TXD P1.1/RXD P1.2/T0/SCL P1.3/INT0/SDA P3.1/XTAL1 P1.4/INT1 P1.5/RST P3.0XTAL2/CLKOUT P1.6/OCB P1.7/OCC/AD00 C20 0.47uF LED1 D2 LED2 D3 LED3 D4 LED4 K6 R19 100k key4 K4 INR VREF PGND SGND 12 INR C12 1uF TP5 R11 100k R18 100k key3 K3 R17 100k key2 K2 R16 100k key1 13 3D&Bass Bass 3D NORMAL LED6 17 10 C21 2.2uF C14 0.1uF 3DR 3DL EN4913 11 R9 30k 5 C15 22nF R8 510k 6 C18 2.2uF CON3 HP Jack OUTR CTRL CN CP INL NC NC BASSL IS31AP4913 R7 20K 2111 TP6 VCC K1 LED5 DIR 14 18 TP3 C17 0.47uF K5 OUTR VSS VCC CON2 AUDIO IN 3V R20 100k key5 2 BASSR 7 key6 TP4 R21 100k key6 20 R13 510k 6 LED6 INL D6 R12 30k LPC922 D1 R23 20k U1 ICP R14 1k D5 R15 20k 1 VDD INFR P0.0/CMP2/KBI0 P0.1/CIN2B/KBI1 P0.2/CIN2A/KBI2 P0.3/CIN1B/KBI3 P0.4/CIN1A/KBI4 P0.5/CMPREF/KBI5 P0.6/CMP1/KBI6 P0.7/T1/KBI7 INFL LED1 LED2 key3 key4 key5 RST LED5 LED4 1 20 19 18 17 16 14 13 7 EN_DIR LED3 EN4913 CLK2111 DATA2111 EN2111 key2 key1 OUTL 3 4 R10 4.7k C19 47nF OUTL TP7 19 16 C16 2.2uF 8 9 15 TP8 R6 20k R5 120k C13 6.8pF Figure 2: IS31AP4913 Application Schematic Integrated Silicon Solution, Inc. – www.issi.com Rev. A, 12/31/2014 2 IS31AP4913 3D AND BASS ENHANCE STEREO HEADPHONE DRIVER EVALUATION BOARD GUIDE BILL OF MATERIALS Name Symbol Audio Amplifier U1 Audio Amplifier Qty Supplier Part No. 3D,Bass Stereo Headphone Driver 1 ISSI IS31AP4913 U2 Headphone Amplifier 1 HWD HWD2111 LDO U3 LDO 1 PAM PAM3101 MCU U4 Microcontroller 1 NXP LPC922 Relay S1 Relay, 5V 1 Panasonic TQ2-5V Transistor Q1 Transistor, NPN,3904 1 Avic MMBT3904LT1 Diode D1~D6 Diode, LED Blue, SMD 6 19-217/BHC-ZL1M2RY/3T Resistor R1,R2 RES,0Ω,1/16W,±5%,SMD 2 Everlight Yageo Resistor R3,R11 RES,100k,1/16W,±5%,SMD 2 Yageo RC0603JR-07100KL Resistor R4,R14 RES,1k,1/16W,±5%,SMD 2 Yageo RC0603JR-071KL Resistor R5,R22 RES,120k,1/16W,±1%,SMD 2 Yageo RC0603FR-07120KL 4 Yageo RC0603FR-0720KL Resistor Description R6,R7,R15,R23 RES,20k,1/16W,±1%,SMD RL0603JR-0700RL Resistor R8,R13 RES,510k,1/16W,±5%,SMD 2 Yageo RC0603JR-0720KL Resistor R9,R12 RES,30k,1/16W,±1%,SMD 2 Yageo RC0603FR-0730KL Resistor R10 RES,4.7k,1/16W,±5%,SMD 1 Yageo RC0603JR-074K7L RC0603JR-0710KL Resistor R16~R21 RES,10k,1/16W,±5%,SMD 6 Yageo Capacitor C1,C11,C14 CAP,0.1µF,50V,±10%,SMD 3 Yageo CC0603KKX7R9BB106 Capacitor C2 CAP,10µF,16V,±20%,SMD 1 Yageo CC0805KKX7R6BB106 Capacitor C3,C6 CAP,22µF,25V,±20%,SMD 2 Yageo Capacitor C4,C5,C7 CAP,0.47µF,50V,±10%,SMD 3 Yageo CC0603KKX7R9BB474 Capacitor C8,C10,C12 CAP,1µF,50V,±10%,SMD 3 Yageo CC0603KKX7R9BB105 Capacitor C9 CAP,10nF,50V,±10%,SMD 1 Yageo CC0603KKX7R9BB103 Capacitor C13,C23 CAP,6.8pF,50V,±10%,SMD 2 Yageo CC0603KKX7R9BB6P8 CC0603KKX7R9BB103 Capacitor C15,C22 CAP,22nF,50V,±10%,SMD 2 Yageo Capacitor C16,C18,C21 CAP,2.2µF,16V,±10%,SMD 3 Yageo CC0603KKX7R7BB225 Capacitor C17,C20 CAP,0.47µF,50V,±10%,SMD 2 Yageo CC0603KKX7R9BB474 Capacitor C19 CAP,47nF,50V,±10%,SMD 1 Yageo CC0603KKX7R9BB473 Connector DC IN 2.5mm DC connector 1 Connector AUDIO IN 3.5mm mini connector 1 Connector HP Jack 3.5mm mini connector 1 Bill of Materials, refer to Figure 2 above. Integrated Silicon Solution, Inc. – www.issi.com Rev. A, 12/31/2014 3 IS31AP4913 3D AND BASS ENHANCE STEREO HEADPHONE DRIVER EVALUATION BOARD GUIDE 0 2 2 1 1 0 2 3 1 1 2 2 1 2 2 1 2 1 2 1 1 0 0 Figure 3: Board Component Placement Guide - Top Layer Figure 4: Board PCB Layout - Top Layer Integrated Silicon Solution, Inc. – www.issi.com Rev. A, 12/31/2014 4 IS31AP4913 3D AND BASS ENHANCE STEREO HEADPHONE DRIVER EVALUATION BOARD GUIDE 0 2 2 1 1 0 2 3 1 1 2 2 1 2 2 1 2 1 2 1 1 0 0 Figure 5: Board Component Placement Guide - Bottom Layer Figure 6: Board PCB Layout - Bottom Layer Copyright © 2014 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. – www.issi.com Rev. A, 12/31/2014 5