LY8212

®
LY8212
Rev. 1.5
„
3.3W Stereo & FM Enhancement Class D Audio Power Amplifier
FEATURES
„
„ 3.3W/CH Into 4Ω from 5.5V power supply at
THD+N = 10%.
„ 2.2V~5.5V Power supply.
„ Low shutdown Current.
„ Low Quiescent Current.
„ Minimum external components.
„ No output filter required for inductive loads.
„ Short-Circuit Protection and automatic recovery.
„ Over-Heat Protection and automatic recovery.
„ Low noise during turn-on and turn-off transitions.
„ FM enhancement function.
„ Lead free and green package available.
(RoHS Compliant)
„ Package : 16pin 150mil SOP, 16pin 4x4 QFN.
„
„
The LY8212 is a high efficiency, high quality 3.3W
stereo class D audio power amplifier which can
operate FM enhance function to get good
performance in FM mode. It is a low noise, filterless
PWM architecture eliminates the output filter,
reducing external component count, system cost
(BOM cost), and simplify design.
The device was designed to meet of Multimedia
application includes mini speaker and other portable
electronic devices.
The LY8212 is a single 5.5V power supply, it is
capable of driving 4Ω speaker load at a continuous
average output of 3.3W/CH with 10% THD+N.
The device also features an internal thermal
shutdown protection and output pin short circuit
( short to output pin, short to ground and short to
VDD ) protection prevent the device from damage
during fault conditions.
The LY8212 is easily to be used in various portable
applications and products. such as FM speaker,
MP3, MP4 and MP5 media players.
APPLICATION
„
„
„
„
„
GENERAL DESCRIPTION
Portable electronic devices
Mobile phones, PDAs
DVD/CD Players, TFT LCD TVs/Monitors
USB Audio, Audio System
iPod dock.
PIN CONFIGURATION
LY8212 SOP16 Pin Configuration (Top View)
Lyontek Inc. reserves the rights to change the specifications and products without notice.
5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
1
®
LY8212
3.3W Stereo & FM Enhancement Class D Audio Power Amplifier
Rev. 1.5
LY8212 QFN16 Pin Configuration (Top View)
„
PIN DESCRIPTION
SYMBOL
Pin No.
DESCRIPTION
SOP16
QFN16
Vo-(L)
1
15
GND
2/9/15
7/13/16
3
1
Positive(+) BTL output of left channel.
4/13
2/11
Power supply of left and right channel.
Shutdown
5
3
Shutdown control pin. (when LOW level is shutdown mode).
AGND
6
4
Analog GND of left and right channel.
INL
7
5
Input of left channel.
Bypass
8
6
Bypass pin.
INR
10
8
Input of right channel.
AVDD
11
9
Analog Power supply of left and right channel.
FM Enhance
12
10
FM enhance pin. (when HIGH level is FM enhance mode).
Vo+(R)
14
12
Positive(+) BTL output of right channel.
Vo-(R)
16
14
Negative(-) BTL output of right channel.
Vo+(L)
VDD
Negative(-) BTL output of left channel.
Ground
Lyontek Inc. reserves the rights to change the specifications and products without notice.
5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
2
®
LY8212
Rev. 1.5
3.3W Stereo & FM Enhancement Class D Audio Power Amplifier
ORDERING INFORMATION
Ordering Code
LY8212SL
LY8212EL
„
Speaker
Channels
Stereo
Stereo
Feature
Pin/
Package
Output Power
(THD+N=10%)
Input
Type
Output
Type
SOP16
3.3W/4Ω @5.5V_BTL
2.7W/4Ω @5.0V_BTL
2.0W/8Ω @5.5V_BTL
1.6W/8Ω @5.0V_BTL
SE
BTL
Yes
QFN16
3.3W/4Ω @5.5V_BTL
2.7W/4Ω @5.0V_BTL
2.0W/8Ω @5.5V_BTL
1.6W/8Ω @5.0V_BTL
SE
BTL
Yes
TYPICAL APPLICATION CIRCUIT
Figure 1. LY8212SL Typical Application Circuit
Lyontek Inc. reserves the rights to change the specifications and products without notice.
5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
3
FM Enhance
®
LY8212
Rev. 1.5
„
3.3W Stereo & FM Enhancement Class D Audio Power Amplifier
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Power supply voltage range
Operating temperature
Input voltage range
Storage temperature
Power dissipation
ESD susceptibility
Junction temperature
Soldering temperature (under 10 sec)
„
RATING
6.0
-40 to 85 (I grade)
-0.3V to VDD +0.3V
-65 to 150
Internally Limited
2000
150
260
UNIT
V
℃
V
℃
W
V
℃
℃
ELECTRICAL CHARACTERISTICS (TA = 25℃)
PARAMETER
Power supply voltage
Quiescent current
(FM enhance pin=low)
Shutdown current
Shutdown voltage input high
Shutdown voltage input low
Output offset voltage
Thermal shutdown temperature
„
SYMBOL
VDD
TA
VI
TSTG
PD
VESD
TJMAX
TSOLDER
SYMBOL
TEST CONDITION
VDD
VDD = 5.5V, No Load
IQ
VDD = 3.7V, No Load
VDD = 2.5V, No Load
VSHUTDOWN ≦ 0.8V,
ISD
VDD = 2.5V to 5.5V
VSDIH VSDIL VI = 0 V, Av = 2 V/V,
VOS
VDD = 2.5 V to 5.5 V
Shutdown temp.
TSD
Restore temp.
MIN.
2.2
-
TYP.
11
9
7
*2
MAX.
5.5
-
UNIT
V
mA
-
0.1
-
µA
1.2
-
-
0.4
V
-
-
25
mV
-
180
135
-
℃
OPERATING CHARACTERISTICS (1) (TA = 25℃)
PARAMETER
SYMBOL
TEST CONDITION
VDD=5.5V
THD+N=10%
RL = 4Ω,
f = 1kHz,
VDD=3.7V
VDD=5.5V
THD+N=1%
Output power / channel
VDD=5.0V
MIN.
-
VDD=5.0V
VDD=3.7V
PO
-
VDD=5.5V
THD+N=10%
RL = 8Ω,
f = 1kHz,
VDD=5.0V
VDD=3.7V
-
VDD=5.5V
THD+N=1%
VDD=5.0V
VDD=3.7V
-
(*1)RL = 4Ω,f = 1kHz, VDD=3.7V, Output Power=1.2W@ THD+N=2%
(*2)Typical values are included for reference only and are not guaranteed or tested.
Typical values are measured at VCC = VCC(TYP.) and TA = 25℃
Lyontek Inc. reserves the rights to change the specifications and products without notice.
5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
4
*2
TYP.
3.3
2.7
1.4
2.6
1.7
*1
1.2
2.0
1.6
0.8
1.6
1.3
0.6
MAX.
-
UNIT
W
®
LY8212
Rev. 1.5
„
3.3W Stereo & FM Enhancement Class D Audio Power Amplifier
OPERATING CHARACTERISTICS (2) (TA = 25℃)
PARAMETER
Power supply rejection ratio
SYMBOL
PSRR
TEST CONDITION
Av=10 V/V ,Input=GND
Ri=33K, Ci=0.47μF
RL=4Ohm, VDD=5.0V
MIN.
TYP.
*2
MAX.
f=1KHz
-
-62.4
-
f=217Hz
-
-62
-
LÆR
85.4
RL = 4Ω,f=1kHz,
0.25W=0dB, VDD=5.0V
77.6
RÆL
RL = 8Ω,Av=2 V/V,
Signal-to-noise ratio
SNR
86.8
VDD=5.0V
1.0W=0dB
VDD = 5.0V, RL = 8Ω,
No
Av=2 V/V, Inputs=GND,
Output voltage noise
Vn
128.7
weighting
f = 20Hz to 20kHz,
Cbypass = 4.7μF
300
Cbypass = 2.2μF
156
Cbypass = 1.0μF
138
VDD = 5.0V
Cbypass =0.47μF
72
Cbypass = 0.22μF
40
Cbypass =0.1μF
32
22
Cbypass =None
Start-up time from shutdown
ZI
Cbypass = 4.7μF
236
Cbypass = 2.2μF
140
Cbypass = 1.0μF
128
VDD = 3.7V
Cbypass =0.47μF
63
Cbypass = 0.22μF
36
Cbypass =0.1μF
28
22
Cbypass =None
245
Frequency
Fc
VDD=2.5V~5.5V
Efficiency
η
f=1kHz, RL=8Ω, Output=1.4W
88
*3
[150KΩ / (5KΩ+Ri)] x4
Gv
VDD= 2.5V to 5.5V
Total Gain
(*2)Typical values are included for reference only and are not guaranteed or tested.
Typical values are measured at VCC = VCC(TYP.) and TA = 25℃
(*3)The audio amplifier’s gain is determined by：
Crosstalk
Cs
Pre-Amplifier Gain = [150KΩ / ( 5KΩ + Ri )] x 2
Total Gain = {[150KΩ / ( 5KΩ + Ri )] x 2} x 2
where Ri is the external serial resistance at the input pin.
Lyontek Inc. reserves the rights to change the specifications and products without notice.
5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
5
UNIT
dB
dB
dB
uV
ms
kHz
%
V/V
®
LY8212
Rev. 1.5
3.3W Stereo & FM Enhancement Class D Audio Power Amplifier
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 2
Total Harmonic Distortion + Noise vs Output Power (4Ω)
Figure 3
Total Harmonic Distortion + Noise vs Output Power (8Ω)
Lyontek Inc. reserves the rights to change the specifications and products without notice.
5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
6
®
LY8212
Rev. 1.5
3.3W Stereo & FM Enhancement Class D Audio Power Amplifier
Figure 4
SNR vs. Noise Level
Figure 5
Crosstalk
Lyontek Inc. reserves the rights to change the specifications and products without notice.
5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
7
®
LY8212
3.3W Stereo & FM Enhancement Class D Audio Power Amplifier
Rev. 1.5
Quiescent Current vs. Supply Voltage
QUIECENT CURRENT vs SUPPLY VOLTAGE
FM Enhance=Enable
QUIESCENT CURRENT vs SUPPLY VOLTAGE
FM Enhance=Disable
20
18
8Ω, 2ch
16
No Load
18
4Ω, 2ch
I(Q) - Quiescent Current - mA
I(Q) - Quiescent Current - mA
20
No Load
14
12
10
8
6
4Ω, 2CH
8Ω, 2CH
16
14
12
10
8
6
4
4
2.5
3
3.5
4
4.5
5
2.5
5.5
3
3.5
VDD - Supply Voltage - V
4
4.5
5
5.5
VDD - Supply Voltage - V
SD Current vs. SD Voltage
SHUTDOWN CURRENT vs SHUTDOWN VOLTAGE
FM Enhance=Enable
SHUTDOWN CURRENT vs SHUTDOWN VOLTAGE
FM Enhance=Disable
160
2.5v
140
I(SD) - Shutdown Current - uA
I(SD) Shutdown Current - uA
160
3.7V
5v
120
100
80
60
40
20
0
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
2.5v
140
3.7v
5v
120
100
80
60
40
20
0
0.9
0.1
0.2
0.3
Shutdown Voltage - V
0.4
0.5
0.6
0.7
0.8
0.9
Shutdown Voltage - V
Supply Current vs. Output Power (RL=4Ω)
SUPPLY CURRENT vs OUTPUT POWER
FM Enhance=Disable
1000
2.5V
800
3.7V
900
700
5.0V
800
600
Supply Current-mA
Supply Current-mA
900
SUPPLY CURRENT vs OUTPUT POWER
FM Enhance=Enable
500
400
300
2.5V
3.7V
5.0V
700
600
500
400
300
200
200
100
100
0
0
1
2
3
4
5
6
7
8
9
10
1
2
3
4
5
6
7
Po-Output Power-W (RL=4 Ohm)
Po-Output Power-W (RL=4 Ohm)
Lyontek Inc. reserves the rights to change the specifications and products without notice.
5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
8
8
9
10
®
LY8212
3.3W Stereo & FM Enhancement Class D Audio Power Amplifier
Rev. 1.5
Supply Current vs. Output Power (RL=8Ω)
SUPPLY CURRENT vs OUTPUT POWER
FM Enhance=Disable
500
2.5V
450
3.7V
400
5.0V
350
Supply Current - mA
Supply Current - mA
500
SUPPLY CURRENT vs OUTPUT POWER
FM Enhance=Enable
300
250
200
150
2.5V
450
3.7V
400
5.0V
350
300
250
200
150
100
100
50
50
0
0
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.8
2
0
0.2
0.4
Po - Output Power - W (RL=8Ω)
0.6
0.8
1
1.2
1.4
1.6
1.8
2
Po - Output Power - W (RL=8Ω)
Load Resistance vs. Output Power (THD+N=1%)
OUTPUT POWER vs LOAD RESISTANCE
FM Enhance=Enable
Output Power vs Load Resistance
FM Enhance=Disable
2.5
3
3.7V
5V
2.5
5V
2
5.5V
Po - Output Power - W
Po-Output Power
2.5v
3.7V
2
1.5
1
5.5V
1.5
1
0.5
0.5
0
0
4Ω
8Ω
12Ω
16Ω
20Ω
24Ω
28Ω
RL - Load Resistance - Ω
Freq = 1kHz, Gain = 2V/V, THD+N = 1%
32Ω
4Ω
8Ω
12Ω
16Ω
20Ω
24Ω
28Ω
32Ω
RL - Load Resistance - Ω
Freq = 1kHz, Gain = 2V/V, THD+N = 1%
Load Resistance vs. Output Power (THD+N=10%)
OUTPUT POWER vs LOAD RESISTANCE
FM Enhance=Disable
Output Power vs Load Resistor
FM Enhance=Disable
3.3
2.5v
3
3.7V
2.5
5.5V
2.5v
3
3.7V
5V
2.7
5V
Po - Output Power - W
Po-Output Power
3.5
2
1.5
1
5.5V
2.4
2.1
1.8
1.5
1.2
0.9
0.6
0.5
0.3
0
4Ω
8Ω
12Ω
16Ω
20Ω
24Ω
28Ω
0
32Ω
4Ω
RL - Load Resistance - Ω
Freq = 1kHz, Gain = 2V/V, THD+N = 10%
8Ω
12Ω
16Ω
20Ω
24Ω
RL - Load Resistance - Ω
Freq = 1kHz, Gain = 2V/V, THD+N = 10%
Lyontek Inc. reserves the rights to change the specifications and products without notice.
5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
9
28Ω
32Ω
®
LY8212
3.3W Stereo & FM Enhancement Class D Audio Power Amplifier
Rev. 1.5
OUTPUT POWER vs. SUPPLY VOLTAGE (RL=4Ω)
OUTPUT POWER vs SUPPLY VOLTAGE
FM Enhance=Enable
OUTPUT POWER vs SUPPLY VOLTAGE
FM Enhance=Disable
4
4.5
THD+N=10%
4
Po-Output Power
3.5
Po - Output Power - W
THD+N=1%
3
2.5
2
1.5
1
THD+N=10%
3.5
THD+N=1%
3
2.5
2
1.5
1
0.5
0.5
0
0
2.5
3.7
5
5.5
VDD - Supply Voltage - V
RL=4Ω, f=1K Hz, Gain=2 V/V
2.5
6
3.7
5
5.5
VDD - Supply Voltage - V
RL=4Ω, f=1K Hz, Gain=2 V/V
6
OUTPUT POWER vs. SUPPLY VOLTAGE (RL=8Ω)
OUTPUT POWER vs SUPPLY VOLTAGE
FM Enhance=Enable
OUTPUT POWER vs SUPPLY VOLTAGE
FM Enhance=Disable
2.8
2.4
THD+N=10%
2.4
THD+N=1%
Po - Output Power - W
Po-Output Power
2.8
THD+N=10%
2
1.6
1.2
0.8
THD+N=1%
2
1.6
1.2
0.8
0.4
0.4
0
0
2.5
3.7
5
5.5
VDD - Supply Voltage - V
RL=8Ω, f=1K Hz, Gain=2 V/V
2.5
6
3.7
5
5.5
VDD - Supply Voltage - V
RL=8Ω, f=1K Hz, Gain=2 V/V
6
Power Dissipation vs. Output Power (8Ohm)
POWER DISSIPATION vs OUTPUT POWER
FM Enhance=Enable
1
2
0.9
1.8
0.8
PD - Power Dissipation - W
P D - P ower Dis s ipation - W
POWER DISSIPATION vs OUTPUT POWER
FM Enhance=Disable
0.7
0.6
0.5
0.4
0.3
0.2
5V
0.1
3.7V
0
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
1.4
1.2
1
0.8
0.6
0.4
5V
0.2
3.7V
0
0
0.2
0.4
Po - Output Power - W
RL=8Ω
Lyontek Inc. reserves the rights to change the specifications and products without notice.
5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
10
0.6
0.8
1
Po - Output Power - W
RL=8Ω
1.2
1.4
®
LY8212
3.3W Stereo & FM Enhancement Class D Audio Power Amplifier
Rev. 1.5
Efficiency vs. Output Power (RL=4Ω,VDD=3.7V)
Efficiency vs. Output Power (RL=4Ohm,VDD=5V)
Efficiency vs Output Power(W)
RL=8 ohm,VDD=3.7V
Efficiency vs Output Power(W)
RL=8 ohm,VDD=5V
90
90
80
70
70
60
60
Efficiency(%)
Efficiency(%)
80
50
40
30
FM Enhance=Disable
20
40
30
FM Enhance=Disable
20
FM Enhance=Enable
10
FM Enhance=Enable
10
50
0
0
0
0.1
0.2
0.3
0.4
0.5
0
0.2
0.4
Po-Output Power(W)
Lyontek Inc. reserves the rights to change the specifications and products without notice.
5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
11
0.6
0.8
Po-Output Power(W)
1
1.2
1.4
®
LY8212
3.3W Stereo & FM Enhancement Class D Audio Power Amplifier
Rev. 1.5
„
APPLICATION INFORMATION
Input Resistors (Ri) and Gain
The LY8212 have two internal amplifier stages. The pre-amplifier gain is externally configurable, while the
total gain is internally fixed. The closed-loop gain of the pre-amplifier gain is set by selecting the Rf to Ri while
the total gain is fixed at 4x. So the input resistors (Ri) set the gain of the amplifier according to the equation.
Pre-Amplifier Gain = (Rf / Ri) x 2
Total Gain = [(Rf / Ri ) x 2] x 2
AVD = 20 x log [4 x (Rf /Ri )]
The resistor matching is very important in the amplifiers. Balance of the output on the reference voltage
depends on matched ratio of the resistors. CMRR, PSRR, and cancellation of the second harmonic distortion
if resistor mismatch occurs. Therefore, it is recommended to use 1% tolerance resistors or better to keep the
performance optimized. Matching is more important than overall tolerance.
Resistor arrays with 1% matching can be used with a tolerance greater than 1%.Place the input resistors very
close to the LY8212 to limit noise injection on the high-impedance nodes. For optimal performance the gain
should be set to 4 V/V or lower. Lower gain allows the LY8212 to operate at its best,
For example
Table 1. Typical Total Gain and AVD Values
Rf (KΩ)
150
150
150
150
150
Ri (KΩ)
150
75
50
25
15
Pre AMP. Gain
2
4
6
12
20
Total Gain
4
8
12
24
40
AVD (db)
12.04
18.06
21.58
27.60
32.04
Input Capacitors (Ci)
The LY8212 using single-end source, So the input coupling capacitors are required. The input capacitors and
input resistors form a high-pass filter with the corner frequency(fc), determined in the equation.
fc = 1 / ( 2πRi Ci )
The value of the input capacitor is important to consider as it directly affects the bass (low frequency)
performance of the circuit. Speakers in wireless phones cannot usually respond well to low frequencies, so
the corner frequency can be set to block low frequencies in this application. Equation is reconfigured to solve
for the input coupling capacitance.
Ci = 1 / ( 2πRi fc )
If the corner frequency is within the audio band, the capacitors should have a tolerance of ±10% or better,
because any mismatch in capacitance causes an impedance mismatch at the corner frequency and below.
Lyontek Inc. reserves the rights to change the specifications and products without notice.
5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
12
®
LY8212
Rev. 1.5
3.3W Stereo & FM Enhancement Class D Audio Power Amplifier
For example
In the table 2 shows the external components. Rin in connect with Cin to create a high-pass filter.
Table 2. Typical Component Values
Reference
Description
Note
Ri
150KΩ
1% tolerance resistors
Ci
0.22uF
80%/–20%
Ci = 1 / ( 2πRi fc)
Ci = 1 / ( 2π x 150KΩ x 4.8Hz)=0.221uF，Use 0.22uF
Decoupling Capacitor
The LY8212 is a high-performance class-D audio amplifier that requires adequate power supply decoupling to
ensure the efficiency is high and total harmonic distortion (THD) is low. For higher frequency transients,
spikes, or digital hash on the line, a good low equivalent-series-resistance (ESR) ceramic capacitor, typically
10.0uF, placed as close as possible to the device VDD lead works best. Placing 0.1uF decoupling capacitor
close to the LY8212 is very important for the efficiency of the class-D amplifier, because any resistance or
inductance in the trace between the device and the capacitor can cause a loss in efficiency. For filtering
lower-frequency noise signals, a 10.0uF or greater capacitor placed near the audio power amplifier would also
help, but it is not required in most applications because of the high PSRR of this device.
Over-Heat Protection
The LY8212 has a built-in over-heat protection circuit at FM enhance pin enable, it will turn off all power
output when the chip temperature over 180℃, the chip will return to normal operation automatically after the
temperature cool down to 135℃.
FM Enhance
The LY8212 has a built-in FM enhance function. When FM signal is poor. Enable (active to high) the FM
enhance pin will improve the signal obviously. But enable the pin will reduce LY8212 efficiency. Therefore
recommend if FM function is not to use. Disable (active to low) the FM enhance pin is very important.
„
PCB LAYOUT
All the external components must place very close to the LY8212. The input resistors need to be very close to
the LY8212 input pins so noise does not couple on the high impedance nodes between the input resistors and
the input amplifier of the LY8212. Then place the decoupling capacitor Cs, close to the LY8212 is important
for the efficiency of the class-D amplifier. Any resistance or inductance in the trace between the device and
the capacitor can cause a loss in efficiency.
Making the high current traces going to VDD, GND, VO+ and VO- pins of the LY8212 should be as wide as
possible to minimize trace resistance. If these traces are too thin, the LY8212's performance and output
power will decrease. The input traces do not need to be wide, but do need to run side-by-side to enable
common-mode noise cancellation.
Lyontek Inc. reserves the rights to change the specifications and products without notice.
5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
13
®
LY8212
3.3W Stereo & FM Enhancement Class D Audio Power Amplifier
Rev. 1.5
„
DEMO BOARD INFORMATION
Demo Board Application Circuit
Figure 6. Demo Board Application Circuit
Demo Board BOM List
LY8212 V2.1 BOM List
No.
Description
Reference
Note
1
Resistor, 100KΩ
R7,R9
1/16W,1%
2
Resistor, 51KΩ
R1,R2
1/16W,1%
3
Resistor, 0Ω
R8,R12
4
Capacitor, 0.1uF
C1,C2,C4,C5
5
Capacitor, 4.7uF
C3
6
Capacitor, 10.0uF
C7
1/16W,1%
80%/−20%,
nonpolarized
80%/−20%,
nonpolarized
80%/−20%, 6.3V
7
Capacitor, 220.0uF
C6
25V,105℃,8x11
8
IC
U1
LY8212SL, SOP16
9
1*2 Pin Header
J3,J6
Pitch 2.54 mm
Lyontek Inc. reserves the rights to change the specifications and products without notice.
5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
14
®
LY8212
3.3W Stereo & FM Enhancement Class D Audio Power Amplifier
Rev. 1.5
Demo Board Artwork
Top Silkscreen
Top Layer
Composite view
Bottom Layer
Lyontek Inc. reserves the rights to change the specifications and products without notice.
5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
15
®
LY8212
Rev. 1.5
„
3.3W Stereo & FM Enhancement Class D Audio Power Amplifier
PACKAGE OUTLINE DIMENSION
SOP 16 Pin Package Outline Dimension
Lyontek Inc. reserves the rights to change the specifications and products without notice.
5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
16
®
LY8212
Rev. 1.5
3.3W Stereo & FM Enhancement Class D Audio Power Amplifier
QFN4X4 16 Pin Package Outline Dimension
Lyontek Inc. reserves the rights to change the specifications and products without notice.
5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
17