Lyontek LY8210IL 2.5 w/ch stereo class d audio power amplifier (wcsp/ tssop) Datasheet

®
LY8210
Rev. 1.7
2.5 W/CH Stereo Class D Audio power Amplifier (WCSP/ TSSOP)
FEATURES
GENERAL DESCRIPTION
„ 2.5 W/CH Into 4Ω from 5V power supply at
THD = 10% (Typ.).
„ 2.5V~5.5V Power supply.
„ Low shutdown Current.
„ Low Quiescent Current.
„ Minimum external components.
„ No output filter required for inductive loads.
„ Output Pin Short-Circuit Protection (Short to
Output Pin, Short to GND, Short to VCC)
„ Low noise during turn-on and turn-off transitions.
„ Lead free and green package available.
(RoHS Compliant)
„ Wafer Chip Scale (WCSP) and TSSOP 20 pin
packaging available.
The LY8210 is a high efficiency, 2.5 W stereo class
D audio power amplifier. It is a low noise, filterless
PWM architecture eliminates the output filter,
reducing external component count, system cost,
and simplify design.
The LY8210 is designed to meet of Multimedia
application includes mobile phones and other
portable electronic devices. The LY8210 is a single
5V supply, it is capable of driving 4Ω speaker load at
a continuous average output of 2.5 W/CH with 10%
THD+N.
In cellular handsets, the earpiece, speaker phone,
and melody ringer can each be driven by the
LY8210. Output pin short circuit ( short to output pin,
short to ground and short to VDD ) protection
prevent the device from damage during fault
conditions.
APPLICATION
„ Portable electronic devices
„ Mobile Phones, PDAs
„ DVD/CD Players, TFT LCD TVs/Monitors
„ USB Audio, 2.1 / 5.1 CH Audio System
BLOCK DIAGRAM
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5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
1
®
LY8210
Rev. 1.7
2.5 W/CH Stereo Class D Audio power Amplifier (WCSP/ TSSOP)
PIN CONFIGURATION
LY8210 WCSP 18 Ball Pin Configuration (Top View)
LY8210 TSSOP20 Pin Configuration (Top View)
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5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
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®
LY8210
2.5 W/CH Stereo Class D Audio power Amplifier (WCSP/ TSSOP)
Rev. 1.7
PIN DESCRIPTION
SYMBOL
Pin No.
WCSP
DESCRIPTION
TSSOP
SDL
A2
4
Shutdown pin of left channel. (when low level is active the pin).
INPL(+)
C3
5
Positive(+) input of left channel.
INNL(-)
A3
17
Negative(-) input of left channel.
VOPL(+)
A1
19
Positive(+) BTL output of left channel.
VONL(-)
C1
1
Negative(-) BTL output of left channel.
B3/B4
6/16
Analog Power supply of left and right channel.
Power supply of left and right channel.
AVDD
VDD
B2/B5
3/13
Vss
C2/A5 B1/B6
8/11/18/20
SDR
C5
14
Ground
Shutdown pin of right channel. (when low level is active the pin).
INPR(+)
A4
7
Positive(+) input of right channel.
INNR(-)
C4
15
Negative(-) input of right channel.
VOPR(+)
C6
12
Positive(+) BTL output of right channel.
VONR(-)
A6
10
Negative(-) BTL output of right channel.
NC
--
2/9
No Connection.
ORDERING INFORMATION
LY 8 210 VV
V : Package Type
CL : WSCP Package
AL : 20-PIN TSSOP with Thermal Pad
IL : 20-PIN TSSOP without Thermal Pad
Product Name
A : Product Line
LY : Lyontek Product Number Prefix
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5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
3
®
LY8210
2.5 W/CH Stereo Class D Audio power Amplifier (WCSP/ TSSOP)
Rev. 1.7
PACKAGE MARKING FORMAT (For WCSP Package only)
AA B C
C : Lot Number
B : Date Code
Product Name
TYPICAL APPLICATION CIRCUIT
Figure 1. Typical Application Schematic With Differential Input
and AVDD Connect to VDD Configuration (WCSP package)
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5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
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®
LY8210
Rev. 1.7
2.5 W/CH Stereo Class D Audio power Amplifier (WCSP/ TSSOP)
Figure 2. Typical Application Schematic With Differential Input
and AVDD Increase Capacitors Configuration(WCSP package).
Note: In case of AVDD and VDD, the use of AVDD Increase Capacitors will optimize the THD+N.
ABSOLUTE MAXIMUN RATINGS*
PARAMETER
Supply Voltage
Operating Temperature
Input Voltage
Storage Temperature
Power Dissipation
ESD Susceptibility
Junction Temperature
Soldering Temperature (under 10 sec)
SYMBOL
VDD
TA
VI
TSTG
PD
VESD
TJMAX
TSOLDER
RATING
6.0
-40 to 85 (I grade)
-0.3V to VDD +0.3V
-65 to 150
Internally Limited
2000
150
260
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5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
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UNIT
V
℃
V
℃
W
V
℃
℃
®
LY8210
Rev. 1.7
2.5 W/CH Stereo Class D Audio power Amplifier (WCSP/ TSSOP)
ELECTRICAL CHARACTERISTICS (TA = 25℃)
PARAMETER
Output offset voltage
(measured differentially)
High-level input current
Low-level input current
SYMBOL
|VOS|
|IIH|
|IIL|
Quiescent Current
IQ
Shutdown Current
ISD
„
TEST CONDITION
VI = 0 V, Av = 2 V/V,
VDD = 2.5 V to 5.5 V
VDD = 5.5 V, VI = 5.8 V
VDD = 5.5 V, VI = 0.3 V
VDD = 5.5V, No Load
VDD = 3.6V, No Load
VDD = 2.5V, No Load
VSHUTDOWN = 0.8V,
VDD = 2.5V to 5.5V
MIN.
TYP.
MAX.
UNIT
-
-
50
mV
-
6.8
5.6
4.4
200
10
9.0
6.4
uA
uA
-
0.6
4
mA
µA
OPERATING CHARACTERISTICS (1)(TA = 25℃, Gain = 2 V/V)
PARAMETER
Out Power / Channel
SYMBOL
TEST CONDITION
THD+N= 10%, f = 1 kHz,
RL= 8Ω
VDD=5.0V
THD+N= 1%, f = 1 kHz,
RL= 8Ω
VDD=5.0V
PO
THD+N= 10%, f = 1 kHz,
RL= 4Ω
THD+N= 1%, f = 1 kHz,
RL= 4Ω
PO = 1.0 W, f = 1 kHz,
RL = 8Ω
PO = 2.0 W, f = 1 kHz,
RL = 4Ω
PO = 0.5 W, f = 1 kHz,
RL = 8Ω
Total harmonic distortion +
THD+N
noise
PO = 0.8 W, f = 1 kHz,
RL = 4Ω
PO = 0.2 W, f = 1 kHz,
RL = 8Ω
PO = 0.2 W, f = 1 kHz,
RL = 4Ω
Power supply rejection ratio
PSRR VDD = 2.5 V to 5.5 V
Common mode rejection ratio
CMRR VIC = 1 Vpp , f = 217 Hz
Signal-to-noise ratio
SNR PO= 1.0 W, RL = 8Ω
VDD = 3.6 V,
f = 20 Hz to 20 kHz,
Output voltage noise
Vn
Inputs ac-grounded with
Ci = 2 μF
Closed-loop Gain
Gv
VDD = 2.5V to 5.5V
Start-up time from shutdown
ZI
VDD = 2.5V to 5.5V
VDD=3.6V
VDD=2.5V
VDD=3.6V
VDD=2.5V
VDD=5.0V
VDD=3.6V
VDD=2.5V
VDD=5.0V
VDD=3.6V
VDD=2.5V
MIN.
-
TYP.
1.5
0.7
0.35
1.2
0.6
0.3
2.5
1.2
0.5
2.0
0.9
0.4
MAX.
-
-
0.03
-
-
0.06
-
-
0.03
-
-
0.04
-
-
0.04
-
-
0.04
-
-
-75
-63
91
-
-
50
-
-
36
-
-
150kΩ/Ri
-
W
VDD=5.0V
%
VDD=3.6V
VDD=2.5V
VDD=3.6V
VDD=5.0V
No
weighting
A
weighting
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
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UNIT
dB
dB
dB
uVRMS
1
V/V
ms
®
LY8210
Rev. 1.7
2.5 W/CH Stereo Class D Audio power Amplifier (WCSP/ TSSOP)
TYPICAL PERFORMANCE CHARACTERISTICS
Figure 3
Total Harmonic Distortion + Noise vs Output Power (RL = 4Ω, Stereo)
Figure 4
Total Harmonic Distortion + Noise vs Output Power (RL = 8Ω, Stereo)
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
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®
LY8210
Rev. 1.7
2.5 W/CH Stereo Class D Audio power Amplifier (WCSP/ TSSOP)
Figure 5
Total Harmonic Distortion + Noise vs Frequency (VDD=5.0V, 4Ω)
Figure 6
Total Harmonic Distortion + Noise vs Frequency (VDD=3.6V, 4Ω)
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
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®
LY8210
Rev. 1.7
2.5 W/CH Stereo Class D Audio power Amplifier (WCSP/ TSSOP)
Figure 7
Total Harmonic Distortion + Noise vs Frequency (VDD=2.5V, 4Ω)
Figure 8
Total Harmonic Distortion + Noise vs Frequency (VDD=5.0V, 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
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®
LY8210
Rev. 1.7
2.5 W/CH Stereo Class D Audio power Amplifier (WCSP/ TSSOP)
Figure 9
Total Harmonic Distortion + Noise vs Frequency (VDD=3.6V, 8Ω)
Figure 10
Total Harmonic Distortion + Noise vs Frequency (VDD=2.5V, 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
®
LY8210
2.5 W/CH Stereo Class D Audio power Amplifier (WCSP/ TSSOP)
Rev. 1.7
Figure 11
Efficiency vs Output power ( RL=4Ω, 33μH)
LY8210 4 Ohm Rfficiency vs Output Power
100
90
Efficiency (%)
80
70
60
3.6V
5.0V
50
40
30
20
10
0.2
0.3
0.4
0.5
0.6
0.8
1.0
1.2
1.4
1.6
2
2.5
Output Power (W)
Figure 12
Efficiency vs Output power ( RL=8Ω, 33μH)
LY8210 RL=8 Ohm Efficiency vs Output Power
100
90
Efficiency (%)
80
70
60
3.6V
5.0V
50
40
30
20
10
0.1
0.2
0.3
0.4
0.5
0.6
0.8
1.0
1.2
Output Power (W)
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5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
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1.4
®
LY8210
Rev. 1.7
„
2.5 W/CH Stereo Class D Audio power Amplifier (WCSP/ TSSOP)
APPLICATION INFORMATION
Fully Differential Amplifier
The LY8210 is a fully differential amplifier with differential inputs and outputs. The fully differential amplifier
consists of a differential amplifier and a common-mode amplifier. The differential amplifier ensures that the
amplifier outputs a differential voltage on the output that is equal to the differential input times the gain. The
common-mode feedback ensures that the common-mode voltage at the output is biased around VDD/2
regardless of the common-mode voltage at the input. The fully differential LY8210 can still be used with a
single-ended input; however, the LY8210 should be used with differential inputs when in a noisy environment,
like a wireless handset, to ensure maximum noise rejection.
Figure 13. Application Schematic With Differential Input Configuration(WCSP Package)
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
®
LY8210
Rev. 1.7
2.5 W/CH Stereo Class D Audio power Amplifier (WCSP/ TSSOP)
Figure 14. Application Schematic With Differential and Capacitors Input Configuration(WCSP Package)
Figure 15. Application Schematic With Single-Ended Input Configuration(WCSP Package)
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
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®
LY8210
Rev. 1.7
2.5 W/CH Stereo Class D Audio power Amplifier (WCSP/ TSSOP)
Figure 16. Application Schematic With Differential and Capacitors Input Configuration(TSSOP Package)
Figure 17. Application Schematic With Single-Ended Input Configuration(TSSOP Package)
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
®
LY8210
2.5 W/CH Stereo Class D Audio power Amplifier (WCSP/ TSSOP)
Rev. 1.7
Input Resistors (Ri) and Gain
The LY8210 has 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 2x. So the input resistors (Ri) set the gain of the amplifier according to the equation.
Pre-Amplifier Gain = Rf / Ri
Total Gain = (Rf / Ri ) x 2
AVD = 20 x log [2 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 LY8210 to limit noise injection on the high-impedance nodes. For optimal performance the gain
should be set to 2 V/V or lower. Lower gain allows the LY8210 to operate at its best,
For example
Table 1. Typical Total Gain and AVD Values
Rf (KΩ)
150
150
150
150
150
150
Ri (KΩ)
150
75
50
37.5
25
18.75
Pre AMP. Gain
1
2
3
4
6
8
Total Gain
2
4
6
8
12
16
AVD (db)
6.02
12.04
15.56
18.06
21.58
24.08
Input Capacitors (Ci)
The LY8210 using fully differential 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.
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5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
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®
LY8210
Rev. 1.7
2.5 W/CH Stereo Class D Audio power Amplifier (WCSP/ TSSOP)
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 (CS)
The LY8210 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
1.0uF, placed as close as possible to the device VDD lead works best. Placing this decoupling capacitor close
to the LY8210 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.
PCB Layout
All the external components must place very close to the LY8210. The input resistors need to be very close to
the LY8210 input pins so noise does not couple on the high impedance nodes between the input resistors and
the input amplifier of the LY8210. Then place the decoupling capacitor Cs, close to the LY8210 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 LY8210 should be as wide as
possible to minimize trace resistance. If these traces are too thin, the LY8210'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
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®
LY8210
2.5 W/CH Stereo Class D Audio power Amplifier (WCSP/ TSSOP)
Rev. 1.7
LY8210CL Demo Board Artwork
Top Silkscreen
Top Layer
Composite view
Bottom Layer
LY8210 V1.1 BOM List
No.
Description
Reference
1
Resistor, 150KΩ
R1,R2,R3,R4,R5,R6
2
Capacitor, 0.1uF
C6,C7,C8
3
Capacitor, 0.22uF
C1,C2,C3,C4
4
Capacitor, 10.0uF
C5
5
LY8210CL
U1
6
1*2 Pin Header
J1,J2
Note
Close Æ Active
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
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®
LY8210
2.5 W/CH Stereo Class D Audio power Amplifier (WCSP/ TSSOP)
Rev. 1.7
LY8210AL/IL Demo Board Artwork
Top Silkscreen
Top Layer
Composite view
Bottom Layer
LY8210 V1.1 BOM List
No.
Description
Reference
1
Resistor, 150KΩ
R1,R2,R3,R4,R5,R6
2
Capacitor, 0.1uF
C6,C7,C8
3
Capacitor, 0.22uF
C1,C2,C3,C4
4
Capacitor, 10.0uF
C5
5
LY8210AL/IL
U1
6
1*2 Pin Header
J1,J2
Note
Close Æ Active
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5F, No. 2, lndustry E . Rd. IX, Science-Based Industrial Park, Hsinchu 300, Taiwan
TEL: 886-3-6668838
FAX: 886-3-6668836
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®
LY8210
Rev. 1.7
2.5 W/CH Stereo Class D Audio power Amplifier (WCSP/ TSSOP)
PACKAGE OUTLINE DIMENSION
18 Ball WCSP 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
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®
LY8210
Rev. 1.7
2.5 W/CH Stereo Class D Audio power Amplifier (WCSP/ TSSOP)
TSSOP 20 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
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