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MAX98302
User Manual
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Rainbow Electronics MAX98302 User Manual

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19-5169; Rev 0; 4/10
EVALUATION KIT
AVAILABLE
Stereo 2.4W Class D Amplifier
General Description
The MAX98302 stereo 2.4W Class D amplifier provides Class AB audio performance with Class D efficiency. This device offers five selectable gain settings (6dB, 9dB, 12dB, 15dB, and 18dB) set by a single gain-select input (GAIN).
Active emissions limiting, edge-rate, and overshoot con­trol circuitry greatly reduces EMI. A filterless spread­spectrum modulation scheme eliminates the need for output filtering found in traditional Class D devices. These features reduce application component count.
MAX98302
Features
S Industry-Leading Quiescent Current: 1.65mA at
3.7V, 2.25mA at 5V
S Spread Spectrum and Active Emissions Limiting
S Five Selectable Gains
S High -67dB PSRR at 217Hz
S Click-and-Pop Suppression
S Thermal and Overcurrent Protection
S Low-Current Shutdown Mode
S Space-Saving, 3mm x 3mm x 0.75mm, 14-Pin
TDFN-EP Package
The MAX98302 is available in a 14-pin TDFN-EP (3mm x 3mm x 0.75mm) package specified over the extended
-40NC to +85NC temperature range.
Applications
Notebook and Netbook Computers
Cellular Phones
MP3 Players
Portable Audio Players
VoIP Phones
Ordering Information
PART TEMP RANGE PIN-PACKAGE
MAX98302ETD+
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
-40NC to +85NC
14 TDFN-EP*
Typical Application Circuit
+2.6V TO +5.5V
10µF
OUTL-
1µF
INL+ OUTL+
1µF
INL-
PVDD
GAIN GAIN
PVDD
CONTROL
0.1µF
1µF
INR+
1µF
INR-
PVDD
SHDN
_______________________________________________________________ Maxim Integrated Products 1
MAX98302
PGND
OUTR+
OUTR-
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Stereo 2.4W Class D Amplifier
ABSOLUTE MAXIMUM RATINGS
PVDD to PGND .......................................................... -0.3V to 6V
All Other Pins to PGND ..........................-0.3V to (PVDD + 0.3V)
Continuous Current into PVDD, PGND,
OUTL_, OUTR_ .......................................................... Q600mA
Continuous Input Current (all other pins) ........................ Q20mA
Duration of Short Circuit Between OUTL_,
OUTR_ to PVDD or PGND .....................................Continuous
Duration of Short Circuit Between OUTL+ to OUTL-,
OUTR+ to OUTR- ..................................................Continuous
MAX98302
Continuous Power Dissipation for Single Layer Board (T
= +70NC)
A
14-Pin TDFN (derate 18.5mW/NC above +70NC) ....1481.5mW
14-Pin TDFN B 14-Pin TDFN B
(Note 1) ............................................54NC/W
JA
(Note 1) ..............................................8NC/W
JC
Note 1: Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-
layer board. For detailed information on package thermal considerations, refer to www.maxim-ic.com/thermal-tutorial.
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(V
= V
PVDD
AC measurement bandwidth, T
AMPLIFIER CHARACTERISTICS
Supply Voltage Range V Undervoltage Lockout UVLO 2.5 V
Quiescent Supply Current I
Shutdown Supply Current Turn-On Time t Bias Voltage V
Voltage Gain A
Input Resistance R
Output Offset Voltage V
SHDN
= 5.0V, V
= 0V, AV = 12dB (GAIN = PVDD), RL = J, RL connected between OUT_+ to OUT_-, 20Hz to 22kHz
PGND
= T
MIN
to T
A
, unless otherwise noted. Typical values are at TA = +25NC.) (Notes 2, 3)
MAX
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
PVDD
DD
I
SHDN
ON
BIAS
Inferred from PSRR test 2.6 5.5 V
V
= 5.0V, TA = +25NC
PVDD
V
= 3.7V 1.65
PVDD
V
= 0V, TA = +25NC
SHDN
Connect GAIN to PGND 17.5 18 18.5
Connect GAIN to PGND through 100kI ±5% resistor
Connect GAIN to PVDD 11.5 12 12.5
V
Connect GAIN to PVDD through 100kI ±5% resistor
GAIN unconnected 5.5 6 6.5 AV = 18dB 14 20
= 15dB 14 20
A
V
= 12dB 14 20
A
IN
OS
V
= 9dB 19 28
A
V
= 6dB 26 40
A
V
TA = +25NC (Note 4)
Continuous Power Dissipation for Multilayer Board (TA = +70NC)
14-Pin TDFN (derate 24.4mW/NC above +70NC) ....1951.2mW
14-Pin TDFN B 14-Pin TDFN B
(Note 1) ............................................41NC/W
JA
(Note 1) ..............................................8NC/W
JC
Junction Temperature .....................................................+150NC
Operating Temperature Range .......................... -40NC to +85NC
Storage Temperature Range ............................ -65NC to +150NC
Lead Temperature (soldering, 10s) ................................+300NC
Soldering Temperature (reflow) ......................................+260NC
2.25 3.4
0.1 10
3.7 10 ms
1.3 V
14.5 15 15.5
8.5 9 9.5
±4 ±20
mA
FA
dB
kI
mV
2 ______________________________________________________________________________________
Stereo 2.4W Class D Amplifier
ELECTRICAL CHARACTERISTICS (continued)
(V
= V
PVDD
AC measurement bandwidth, T
Click and Pop K
Common-Mode Rejection Ratio CMRR f
Crosstalk
Power-Supply Rejection Ratio (Note 4)
Output Power P
Total Harmonic Distortion Plus Noise
Oscillator Frequency f Spread-Spectrum Bandwidth Efficiency Output Noise V Output Current Limit I Thermal Shutdown Level 160 Thermal Shutdown Hysteresis 30
DIGITAL INPUT (SHDN GAIN)
Input Voltage High V Input Voltage Low V Input Leakage Current
Note 2: All devices are 100% production tested at T Note 3: Testing performed with a resistive load in series with an inductor to simulate an actual speaker load. For R
Note 4: Amplifier inputs AC-coupled to ground. Note 5: Mode transitions controlled by SHDN.
SHDN
= 5.0V, V
= 0V, AV = 12dB (GAIN = PVDD), RL = J, RL connected between OUT_+ to OUT_-, 20Hz to 22kHz
PGND
= T
MIN
to T
A
, unless otherwise noted. Typical values are at TA = +25NC.) (Notes 2, 3)
MAX
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
CP
PSRR
OUT
THD+N f
OSC
Peak voltage, A-weighted, 32/samples per second, R
= 8I + 68FH
L
(Notes 4, 5)
= 1kHz, input referred 62 dB
IN
P
= 300mW,
OUT
R
= 8I + 68FH
L
= 2.6V to 5.5V, TA = +25NC
V
PVDD
V R
= 200mV
RIPPLE
= 8I + 68FH
L
P-P
THD+N = 10%, f
= 1kHz
IN
THD+N = 1%, f
= 1kHz
IN
= 1kHz
IN
Into shutdown -54
Out of shutdown -54
f = 1kHz 92 f = 10kHz 80
f = 217Hz 67
,
f = 1kHz 65 f = 10kHz 58 R
= 4I + 33FH
L
R
= 8I + 68FH
L
R
= 8I + 68FH,
L
V
= 3.7V
PVDD
R
= 4I + 33FH
L
R
= 8I +68FH
L
R
= 8I + 68FH,
L
V
= 3.7V
PVDD
= 4I + 33FH,
R
L
V
= 1W
PVDD
= 8I + 68FH
R
L
P
= 0.5W
OUT
50 67
2.4
1.6
0.87
2
1.25
0.68
0.04
0.04
300 kHz
±7 83 %
2 A
L = 33FH. For R
= 8I, L = 68FH.
L
E THD+N = 1%, f = 1kHz, R
AV = 6dB, A weighted (Note 4) 50
N
LIM
INH
INL
= +25NC
T
A
= +25NC. All temperature limits are guaranteed by design.
A
= 8I + 68FH
L
1.4 V
dBV
FV
0.4 V
±1
= 4I,
L
MAX98302
dB
dB
W
W
%
kHz
RMS
NC NC
FA
_______________________________________________________________________________________ 3
Stereo 2.4W Class D Amplifier
Typical Operating Characteristics
(V
= V
PVDD
to 22kHz AC measurement bandwidth, T
SHDN
= 5.0V, V
= 0V, AV = 12dB, RL = J, unless otherwise specified, RL connected between OUT_+ to OUT_-, 20Hz
PGND
= +25NC, unless otherwise noted.)
A
10
RL = 4I + 33µH V
= 5.0V
PVDD
MAX98302
1
P
= 500mW
P
= 400mW
OUT
FREQUENCY (kHz)
OUT
THD+N (%)
0.1
0.01
0.01 100
THD+N vs. FREQUENCY
10
RL = 8I + 68µH V
= 3.7V
PVDD
1
THD+N (%)
THD+N vs. FREQUENCY
0.1
0.01
0.01 100
P
= 350mW
OUT
FREQUENCY (kHz)
P
OUT
1010.1
= 100mW
1010.1
MAX98302 toc01
MAX98302 toc04
10
RL = 4I + 33µH V
= 3.7V
PVDD
1
THD+N (%)
0.1
0.01
0.01 100
P
OUT
P
= 500mW
= 400mW
OUT
FREQUENCY (kHz)
THD+N vs. OUTPUT POWER
100
RL = 4I + 33µH V
= 5.0V
PVDD
10
fIN = 6kHz
1
THD+N vs. FREQUENCY
THD+N (%)
fIN = 1kHz
0.1
0.01 0 3.0
OUTPUT POWER (W)
fIN = 100Hz
10
RL = 8I + 68µH V
= 5.0V
MAX98302 toc02
THD+N (%)
1010.1
PVDD
1
P
= 800mW
OUT
0.1
P
= 600mW
0.01
0.01 100
OUT
1010.1
FREQUENCY (kHz)
MAX98302 toc03
THD+N vs. OUTPUT POWER
100
RL = 4I + 33µH V
= 3.7V
THD+N vs. FREQUENCY
10
1
THD+N (%)
0.1
0.01 0
PVDD
MAX98302 toc06
fIN = 6kHz
fIN = 1kHz
fIN = 100Hz
1.501.251.000.750.500.25
OUTPUT POWER (W)
MAX98302 toc05
2.52.01.51.00.5
100
THD+N vs. OUTPUT POWER
RL = 8I + 68µH V
= 5.0V
PVDD
10
1
THD+N (%)
0.1
0.01 0 2.0
fIN = 6kHz
fIN = 1kHz
OUTPUT POWER (W)
fIN = 100Hz
1.51.00.5
MAX98302 toc07
100
10
1
THD+N (%)
0.1
0.01 0
THD+N vs. OUTPUT POWER
RL = 8I + 68µH V
= 3.7V
PVDD
fIN = 6kHz
fIN = 1kHz
OUTPUT POWER (W)
MAX98302 toc08
EFFICIENCY (%)
fIN = 100Hz
1.000.750.500.25
EFFICIENCY vs. OUTPUT POWER
100
V
= 5.0V
PVDD
90
80
70
60
RL = 4I + 33µH
50
40
30
20
10
0
0 2.50
OUTPUT POWER PER CHANNEL (W)
4 ______________________________________________________________________________________
MAX98302 toc09
RL = 8I + 68µH
2.001.500.50 1.00
Stereo 2.4W Class D Amplifier
Typical Operating Characteristics (continued)
(V
= V
PVDD
to 22kHz AC measurement bandwidth, T
SHDN
= 5.0V, V
= 0V, AV = 12dB, RL = J, unless otherwise specified, RL connected between OUT_+ to OUT_-, 20Hz
PGND
= +25NC, unless otherwise noted.)
A
MAX98302
EFFICIENCY vs. OUTPUT POWER
100
V
= 3.7V
PVDD
90
80
70
RL = 8I + 68µH
60
50
40
EFFICIENCY (%)
30
20
10
0
0 1.50
RL = 4I + 33µH
OUTPUT POWER (W)
OUTPUT POWER vs. SUPPLY VOLTAGE
3.5 RL = 4I + 68µH
3.0
2.5
2.0
1.5
OUTPUT POWER (W)
1.0
0.5
0
2.5 5.5
10% THD+N
1% THD+N
SUPPLY VOLTAGE (V)
OUTPUT POWER vs. LOAD RESISTANCE
3.0
2.5
MAX98302 toc10
2.0
1.5
1.0
OUTPUT POWER PER CHANNEL (W)
0.5
1.251.000.750.500.25
0
1 1000
10% THD+N
LOAD RESISTANCE (I)
1% THD+N
10010
V
PVDD
= 5V
MAX98302 toc11
OUTPUT POWER vs. LOAD RESISTANCE
1.6
1.4
1.2
1.0
0.8
0.6
OUTPUT POWER (W)
0.4
0.2
0
1 1000
10% THD+N
1% THD+N
10010
LOAD RESISTANCE (I)
V
PVDD
= 3.7V
MAX98302 toc12
POWER-SUPPLY REJECTION RATIO
RIPPLE PVDD
= 200mV
= 5.0V
vs. FREQUENCY
P-P
MAX98302 toc15
1010.1
FREQUENCY (kHz)
OUTPUT POWER vs. SUPPLY VOLTAGE
2.5 RL = 8I + 68µH
MAX98302 toc13
2.0
1.5
1.0
OUTPUT POWER (W)
0.5
5.04.54.03.53.0
0
2.5 5.5
10% THD+N
1% THD+N
SUPPLY VOLTAGE (V)
MAX98302 toc14
5.04.54.03.53.0
0
V V
-10
-20
-30
-40
PSRR (dB)
-50
-60
-70
-80
0.01 100
CROSSTALK vs. FREQUENCY
0
INPUT REFERRED
= 8I + 68µH
R
L
-20 P
= 300mW
OUT
-40
-60
CROSSTALK (dB)
-80
-100
-120
0.01 100
LEFT TO RIGHT
RIGHT TO LEFT
FREQUENCY (kHz)
_______________________________________________________________________________________ 5
COMMON-MODE REJECTION RATIO
0
vs. FREQUENCY
INPUT REFERRED R
= 8I + 68µH
-10
L
= 300mW
P
MAX98302 toc16
1010.1
OUT
-20
-30
-40
-50
CMRR (dB)
-60
-70
-80
-90
0.01 100 FREQUENCY (kHz)
1010.1
MAX98302 toc17
24 22
20 18 16 14 12
10
AMPLITUDE (dB)
8 6 4 2 0
0.01 100
GAIN vs. FREQUENCY
A
= 18dB
V
AV = 15dB
AV = 12dB
AV = 9dB
AV = 6dB
FREQUENCY (kHz)
MAX98302 toc18
1010.1
Stereo 2.4W Class D Amplifier
Typical Operating Characteristics (continued)
(V
= V
PVDD
to 22kHz AC measurement bandwidth, T
SHDN
= 5.0V, V
= 0V, AV = 12dB, RL = J, unless otherwise specified, RL connected between OUT_+ to OUT_-, 20Hz
PGND
= +25NC, unless otherwise noted.)
A
MAX98302
WIDEBAND OUTPUT SPECTRUM
0
RBW = 100Hz R
= 8I + 68µH
L
-20
-40
-60
OUTPUT MAGNITUDE (dBV)
-80
-100
EXITING SHUTDOWN
1ms/div
FREQUENCY (MHz)
MAX98302 toc19
1010.10.010.001 100
MAX98302 OUTPUT
SHDN
MAX98302 toc21
ENTERING SHUTDOWN
1ms/div
INBAND OUTPUT SPECTRUM
0
f = 1kHz R
= 8I + 68µH
L
-20
-40
-60
-80
-100
OUTPUT MAGNITUDE (dBV)
-120
-140 10 100,000
FREQUENCY (Hz)
10,0001000100
MAX98302 toc20
MAX98302 OUTPUT
SHDN
MAX98302 toc22
SUPPLY CURRENT vs. SUPPLY VOLTAGE
3.0 RL = ∞
2.5
2.0
1.5
1.0
SUPPLY CURRENT (mA)
0.5
0
2.5 5.5 SUPPLY VOLTAGE (V)
0.20
0.18
MAX98302 toc23
5.04.54.03.53.0
0.16
0.14
0.12
0.10
0.08
0.06
SUPPLY CURRENT (µA)
0.04
0.02
0
2.5 5.5
vs. SUPPLY VOLTAGE
RL = ∞
SUPPLY VOLTAGE (V)
6 ______________________________________________________________________________________
SHUTDOWN SUPPLY CURRENT
MAX98302 toc24
5.04.54.03.53.0
Stereo 2.4W Class D Amplifier
Pin Configuration
TOP VIEW
MAX98302
OUTL+
PGNDPGND
13 11 10
14
+
2
1
INL+
*CONNECT THE EP TO PGND TO ENHANCE THERMAL DISSIPATION.
PVDD
OUTL-INL-
12
MAX98302
4 5
3
GAIN
TDFN
OUTR-
INR-
9
6
OUTR+INR+
EP*
PGNDSHDN
8
7
Pin Description
PIN NAME FUNCTION
1, 8, 14 PGND Ground
2 INL+ Noninverting Audio Left Input 3 INL- Inverting Audio Left Input 4 GAIN Gain Selection. See Table 1 for GAIN settings. 5 INR- Inverting Audio Right Input 6 INR+ Noninverting Audio Right Input 7
9 OUTR+ Positive Right Speaker Output 10 OUTR- Negative Right Speaker Output 11 PVDD 12 OUTL- Negative Left Speaker Output 13 OUTL+ Positive Left Speaker Outpout
— EP Exposed Pad. Connect EP to a solid ground plane.
SHDN Active-Low Shutdown Input. Drive SHDN low to place the device in shutdown.
Power Supply. Bypass PVDD to PGND with a 0.1FF capacitor.
_______________________________________________________________________________________ 7
Stereo 2.4W Class D Amplifier
Detailed Description
The MAX98302 features industry-leading quiescent cur­rent, low-power shutdown mode, comprehensive click­and-pop suppression, and excellent RF immunity.
The MAX98302 offers Class AB audio performance with Class D efficiency in a minimal board-space solution.
The Class D amplifier features spread-spectrum modu­lation, edge-rate, and overshoot control circuitry that
MAX98302
offers significant improvements to switch-mode amplifier radiated emissions.
The MAX98302 amplifier features click-and-pop sup­pression that reduces audible transients on startup and shutdown. The amplifier includes thermal-overload and short-circuit protection.
Class D Speaker Amplifier
The MAX98302 filterless Class D amplifier offers much higher efficiency than Class AB amplifiers. The high efficiency of a Class D amplifier is due to the switching operation of the output stage transistors. Any power loss associated with the Class D output stage is mostly due
2
to the I cent current overhead.
Traditional Class D amplifiers require the use of external LC filters, or shielding, to meet EN55022B electromagnet­ic-interference (EMI) regulation standards. Maxim’s active emissions limiting edge-rate control circuitry and spread­spectrum modulation reduce EMI emissions, while main­taining up to 83% efficiency.
Maxim’s spread-spectrum modulation mode flattens wideband spectral components, while proprietary tech­niques ensure that the cycle-to-cycle variation of the switching period does not degrade audio reproduc­tion or efficiency. The MAX98302’s spread-spectrum modulator randomly varies the switching frequency by Q7kHz around the center frequency (300kHz). Above 10MHz, the wideband spectrum looks like noise for EMI purposes.
If the output current of the speaker amplifier exceeds the current limit (2A typ), the MAX98302 disables the out­puts for approximately 100Fs. At the end of 100Fs, the outputs are re-enabled. If the fault condition still exists, the MAX98302 continues to disable and re-enable the outputs until the fault condition is removed.
R loss of the MOSFET on-resistance and quies-
Ultra-Low-EMI Filterless Output Stage
Speaker Current Limit
Selectable Gain
The MAX98302 offers five programmable gains selected using the GAIN input.
Table 1. Gain Control Configuration
GAIN PIN MAXIMUM GAIN (dB)
Connect to PGND 18
Connect to PGND through 100kI ±5% resistor
Connect to PVDD 12
Connect to PVDD through 100kI ±5% resistor
Unconnected 6
15
9
Shutdown
The MAX98302 features a low-power shutdown mode, drawing 0.17FA of supply current. Drive SHDN low to put the MAX98302 into shutdown.
Click-and-Pop Suppression
The MAX98302 speaker amplifier features Maxim’s com­prehensive click-and-pop suppression. During startup, the click-and-pop suppression circuitry reduces any audible transient sources internal to the device. When entering shutdown, the differential speaker outputs ramp down to PGND quickly and simultaneously.
Applications Information
Filterless Class D Operation
Traditional Class D amplifiers require an output filter. The filter adds cost and size and decreases THD+N perfor­mance. The MAX98302’s filterless modulation scheme does not require an output filter.
Because the switching frequency of the MAX98302 is well beyond the bandwidth of most speakers, voice coil movement due to the switching frequency is very small. Use a speaker with a series inductance > 10FH. Typical 8I speakers exhibit series inductances in the 20FH to 100FH range.
Component Selection
Speaker Amplifier Power-Supply Input (PVDD)
PVDD powers the speaker amplifier. PVDD ranges from
2.6V to 5.5V. Bypass PVDD with 0.1FF and 10FF capaci­tors to PGND. Also, connect at least 10FF of system bulk capacitance to PVDD. Apply additional bulk capaci­tance at the device if long input traces between PVDD and the power source are used.
8 ______________________________________________________________________________________
Stereo 2.4W Class D Amplifier
Input Filtering
The input-coupling capacitor (C the amplifier’s internal input resistance (R
), in conjunction with
IN
), forms a
IN
highpass filter that removes the DC bias from the incom­ing signal. These capacitors allow the amplifier to bias the signal to an optimum DC level.
Assuming zero-source impedance with a gain setting of
= 12dB, 15dB, or 18dB, CIN is:
A
V
8
= µ
C [ F]
IN
f
3dB
−
with a gain setting of AV = 9dB, CIN is:
5.7
= µ
C [ F]
IN
f
−
3dB
with a gain setting of AV = 6dB, CIN is:
4
= µ
C [ F]
IN
f
−
3dB
where f
is the -3dB corner frequency. Use capaci-
-3dB
tors with adequately low-voltage coefficients for best low-frequency THD performance.
Layout and Grounding
MAX98302
Proper layout and grounding are essential for optimum performance. Good grounding improves audio perfor­mance and prevents switching noise from coupling into the audio signal.
Use wide, low-resistance output traces. As load imped­ance decreases, the current drawn from the device outputs increase. At higher current, the resistance of the output traces decrease the power delivered to the load. For example, if 2W is delivered from the speaker output to a 4I load through a 100mI trace, 49mW is consumed in the trace. If power is delivered through a 10mI trace, only 5mW is consumed in the trace. Wide output, supply, and ground traces also improve the power dissipation of the device.
The MAX98302 is inherently designed for excellent RF immunity. For best performance, add ground fills around all signal traces on top or bottom PCB planes.
The MAX98302 TDFN-EP package features an exposed thermal pad on its underside. This pad lowers the pack­age’s thermal resistance by providing a heat conduction path from the die to the PCB. Connect the exposed thermal pad to the ground plane by using a large pad and multiple vias.
_______________________________________________________________________________________ 9
Stereo 2.4W Class D Amplifier
Block Diagram
2.6V TO 5.5V
MAX98302
PVDD
PVDD
1µF
1µF
1µF
1µF
SHDN
INL-
GAIN34
INR- 5
0.1µF
PVDD
11
7
2INL+
6INR+
UVLO/POWER
MANAGEMENT
GAIN
CONTROL
10µF
CLICK-AND-POP
SUPPRESSION
CLASS D
MODULATOR
MAX98302
CLASS D
MODULATOR
LOW-EMI
DRIVER
LOW-EMI
DRIVER
LOW-EMI
DRIVER
PVDD
13 OUTL+
PGND
PVDD
OUTL-12
PGND
PVDD
9 OUTR+
PGND
PVDD
OUTR-10
1, 8, 14
LOW-EMI
DRIVER
PGND
PGND
Chip Information
PROCESS: CMOS
10 _____________________________________________________________________________________
Stereo 2.4W Class D Amplifier
Package Information
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.
PACKAGE TYPE PACKAGE CODE DOCUMENT NO.
14 TDFN-EP T1433-2
21-0137
MAX98302
______________________________________________________________________________________ 11
Stereo 2.4W Class D Amplifier
Package Information (continued)
For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the
package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status.
COMMON DIMENSIONS
MAX98302
SYMBOL
MIN. MAX.
A 0.70 0.80
D 2.90 3.10
E 2.90 3.10
A1
0.00 0.05
L 0.20 0.40
0.25 MIN.k
A2 0.20 REF.
PACKAGE VARIATIONS
PKG. CODE
T633-2
T833-2
T833-3
T1033-1
T1033MK-1
T1033-2
T1433-1
N
6 1.50±0.10 2.30±0.10 0.95 BSC MO229 / WEEA 0.40±0.05 1.90 REF
8 1.50±0.10 2.30±0.10
8 1.50±0.10 2.30±0.10
1.50±0.10
1.70±0.10 2.30±0.1014
D2
E2 e
2.30±0.1010
2.30±0.101.50±0.10
2.30±0.10 MO229 / WEED-3 2.00 REF0.25±0.050.50 BSC1.50±0.1010
JEDEC SPEC
0.65 BSC MO229 / WEEC
0.65 BSC MO229 / WEEC
0.50 BSC
0.50 BSC MO229 / WEED-3
0.40 BSC
0.40 BSC
0.40 BSC
MO229 / WEED-3
- - - -
- - - - 0.20±0.05 2.40 REFT1433-3F 14 2.30±0.101.70±0.10
b
[(N/2)-1] x e
0.30±0.05 1.95 REF
0.30±0.05 1.95 REF
2.00 REF0.25±0.05
0.25±0.05 2.00 REF10
2.40 REF0.20±0.05- - - -
0.20±0.05 2.40 REFT1433-2 14 2.30±0.101.70±0.10
12 _____________________________________________________________________________________
Stereo 2.4W Class D Amplifier
Revision History
MAX98302
REVISION
NUMBER
0 4/10 Initial release —
REVISION
DATE
DESCRIPTION
PAGES
CHANGED
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 13
©
2010 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
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