ISSI IS31AP4913 Manual de usuario

IS31AP4913 Stereo Headphone Driver Evaluation Board Guide

Integrated Silicon Solution, Inc. – www.issi.com

R1.1, 3/7/2012 1

Description

The IS31AP4913 evaluation board is a fully assembled

and tested PCB. The IS31AP4913 is a high quality

stereo headphone driver with 3D-surround and bass

enhancement capability. It also features removal of the

output DC-blocking capacitors for a reduction in

system component count and end cost. 3D-surround

and bass-enhancement are controlled via RC network.

Features

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

Quick start

Figure 1 Photo of IS31AP4913 Evaluation Board

Recommended Equipment

5.0V, 2A power supply

Audio source (i.e. MP3 player, Notebook PC, etc.)

Headphone (32Ω)

Absolute Maximum Ratings

≤5.5V power supply

Caution: Do not exceed the conditions listed above; otherwise, the

board risks permanent damage.

Procedure

The evaluation board allows verification of

IS31AP4913 device operation.

Caution: Do not turn on the power supply until all connections are

completed.

1. Connect headphone (32Ω) to the connector

(headphone input jack).

2. Connect the ground terminal of the power supply

to the GND and the positive terminal to the VCC.

3. Alternatively, connect DC power to connector (DC

IN).

4. Connect the audio sources to the INR terminal

(right channel) and INL terminal (left channel); or

connect audio source directly to connector

(AUDIO- IN).

5. Turn on the power supply, and pay attention to the

supply current. Be cautious: currents above

200mA are large enough to cause board damage.

6. Turn on the audio source.

Ordering Information

Part No. Temperature Range IC 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 contact ISSI at

analog_mkt@issi.com or (408) 969-6600

IS31AP4913 Stereo Headphone Driver Evaluation Board Guide

Integrated Silicon Solution, Inc. – www.issi.com

R1.1, 3/7/2012 2

Performance Description*

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 performed by IS31AP4913.

1. (Default mode) normal: basic operating mode

2. 3D mode: enable 3D enhance function.

3. Bass mode: enable bass enhance function.

4. 3D&Bass: enable 3D and bass enhance function.

5. 2111: use the output DC-blocking capacitors headphone amplifier (HWD2111) drive headphone

6. DIR: use the input audio source direct drive headphone.

*Note: IS31AP4913 headphone driver provides solely audio function capability on the evaluation board .

Software Support

Please refer to the integrated program.

*Note: Please refer to the datasheet to get more information about IS31AP4913

Figure 2: IS31AP4913 Application Circuit

AUDIO IN

VDD_5V

C20

0.47uF

R12

30k

R10 4.7k

C19 47nF

R11

100k

R13

510k

C22

22nF

R15

20k

C17

0.47uF

30k

20K

C15

22nF R8

510k

C14 0.1uF

GND

C12 1uF

HP Jack

C18

2.2uF

C16

2.2uF

C21

2.2uF

R23

20k

VDD_5V

VDD

GND

BP 4

VOUT 5

LDO

10nF

0.1uF

VCC_3V

C10

10uF

SW4

3D&Bass

SW3

Bass

SW2

SW1

NORMAL

R17

10k R18

10k R19

10k R20

10k

VCC_3V

key5

key2

key3

key4

ICP

GND

RST

VCC_3V

P2.0/ICB/DAC0/AD03 1

P2.1/OCD/AD02 2

P0.0/CMP2/KBI0/AD01

P1.7/OCC/AD00

4P1.6/OCB

5P1.5/RST

VSS 7

P3.1/XTAL1 8

P3.0XTAL2/CLKOUT 9

P1.4/INT1

10 P1.3/INT0/SDA

11 P1.2/T0/SCL

P2.2/MOSI 13

P2.3/MISO 14

P2.4/SS 15

P2.5/SPICLK 16

P1.1/RXD

17 P1.0/TXD

P0.7/T1/KBI7

19 P0.6/CMP1/KBI6

VDD 21

P0.5/CMPREF/KBI5

22 P0.4/CIN1A/KBI4/DAC1/AD13

23 P0.3/CIN1B/KBI3/AD12

24 P0.2/CIN2A/KBI2/AD11

25 P0.1/CIN2B/KBI1/AD10

P2.6/OCA 27

P2.7/ICA 28

LPC936

C11

0.1uF

VCC_3V

EN4913

ke y 1

ke y 2

ke y 3

ke y 4

LED1

LED2

LED3

LED4

D1 R14

LED1

LED2

LED3

LED4

VCC_3V

VDD_5V

10uF

EN4913

GND

BASER

INFR

INR

3DR

3DL

BASSL

INFL

NC 8

NC 9

INL

SGND

CTRL

VDD 12

VREF 13

CP 16

PGND

OUTR 14

PVSS 18

OUTL 15

CN 19

IS31AP4913

VOUT1 1

VIN1

BYP ASS 3

CLOCK

GND

UP/DN

SDB

VIN2

8VOUT2 9

VDD 10

2111

VDD_5V

C4 0.47uF

C5 0.47uF

EN2111

CLK2111

DATA2111

CLK2111

0.47uF

INL

INR

OUTL

OUTR

OUTL

OUTR

VCC

GND

INL

INR

OUTL

J10

OUTR

J11

GND

VDD_5V

INL INR

OUTL OUTR

C1 1uF

DCCON

120k

R22

120k

LED5

SW5

2111

R16

10k

LED5

R1 0R

R2 0R

C322uF

C622uF

key6

100k

C13

6.8pF

C23

6.8pF

GND 10

VCC

CON1

COM1

COFF1

5NC 6

COFF2 7

COM2 8

CON2 9

RELAY

TRANSISTOR_NPN_3904

VDD_5V

INLINR

OUTLOUTR

SW6

DIR

R21

10k

key1

LED6 D6

EN_DIR

LED6

ke y 5

ke y 6

EN2111

DATA2111

RST

IS31AP4913 Stereo Headphone Driver Evaluation Board Guide

Integrated Silicon Solution, Inc. – www.issi.com

R1.1, 3/7/2012 3

Bill of Materials

No. Name Symbol Description Manufacturer PN

1 USB Control U1 Controller LPC936

2 HP Amp U2

CSMSC Headphone

Driver CSMSC HWD2111

3 LDO U3

Low-Drop Out

Regulator EUTECH

4 HP Driver U4

ISSI Stereo

Headphone Driver IS31AP4913-QFLS2

5 Relay S1 Panasonic

6 Resistors R1~R23 Refer to Figure 2

6 Capacitors C1~C23 Refer to Figure 2

Table 2: Bill of Materials; Refer to Figure 2 for additional information.

IS31AP4913 Stereo Headphone Driver Evaluation Board Guide

Integrated Silicon Solution, Inc. – www.issi.com

R1.1, 3/7/2012 4

Figure 3: Board Component Placement Guide -Top Layer

Figure 4: Board PCB Layout- Top Layer

1 2

IS31AP4913 Stereo Headphone Driver Evaluation Board Guide

Integrated Silicon Solution, Inc. – www.issi.com

R1.1, 3/7/2012 5

Figure 5: Board Component Placement Guide -Bottom Layer

Figure 6: Board PCB Layout-Bottom Layer

1 2

IS31AP4913 Stereo Headphone Driver Evaluation Board Guide

Integrated Silicon Solution, Inc. – www.issi.com

R1.1, 3/7/2012 6

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.

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