Eval Board

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