- 您现在的位置：买卖IC网 > PDF目录2092 > MAX98303EWE+T (Maxim Integrated Products)IC AMP AUDIO 3.1W STEREO D 16WLP PDF资料下载
参数资料
| 型号： | MAX98303EWE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/13页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO 3.1W STEREO D 16WLP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 类型： | D 类 |
| 输出类型： | 2 通道（立体声） |
| 在某负载时最大输出功率 x 通道数量： | 3.1W x 2 @ 4 欧姆 |
| 电源电压： | 2.6 V ~ 5.5 V |
| 特点： | 消除爆音，差分输入，短路和热保护，关闭 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 16-WLP（1.68x1.68） |
| 封装/外壳： | 16-WFBGA，WLBGA |
| 包装： | 带卷 (TR) |
10 _____________________________________________________________________________________
MAX98303
Stereo 3.1W Class D Amplifier
Applications Information
Filterless Class D Operation
Traditional Class D amplifiers require an output filter.
The filter adds cost and size and decreases THD perfor-
mance. The IC’s filterless modulation scheme does not
require an output filter.
Because the switching frequency of the IC 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
Power-Supply Input (PVDD)
PVDD powers the speaker amplifier. PVDD ranges from
2.6V to 5.5V. Bypass PVDD with 0.1FF and 10FF capaci-
tors to PGND. Apply additional bulk capacitance at the
device if long input traces between PVDD and the power
source are used.
Input Filtering
The input-coupling capacitor (CIN), in conjunction with
the amplifier’s internal input resistance (RIN), forms a
highpass filter that removes the DC bias from the incom-
ing 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:
IN
3dB
8
C
[ F]
f
=
with a gain setting of 9dB, CIN is:
IN
3dB
5.7
C
[ F]
f
=
with a gain setting of 6dB, CIN is:
IN
3dB
4
C
[ F]
f
=
where f-3dB is the -3dB corner frequency. Use capaci-
tors with adequately low-voltage coefficients for best
low-frequency THD performance.
Layout and Grounding
Proper layout and grounding are essential for optimum
performance. Good grounding improves audio perfor-
mance and prevents switching noise from coupling into
the audio signal.
Use wide, low-resistance output traces. As the load
impedance decreases, the current drawn from the
device increases. At higher current, the resistance of the
output traces decrease the power delivered to the load.
For example, if 2W is delivered from the device output to
a 4I load through 100mI of total speaker trace, 1.904W
is delivered to the speaker. If power is delivered through
10mI of total speaker trace, 1.99W is delivered to the
speaker. Wide output, supply, and ground traces also
improve the power dissipation of the device.
The IC is inherently designed for excellent RF immunity.
For best performance, add ground fills around all signal
traces on top or bottom PCB planes.
WLP Applications Information
For the latest application details on WLP construction,
dimensions, tape carrier information, PCB techniques,
bump-pad layout, and recommended reflow tempera-
ture profile, as well as the latest information on reliability
testing results, refer to Application Note 1891: Wafer
level packaging (WLP) and its applications. Figure 2
shows the dimensions of the WLP balls used on the IC.
Figure 2. MAX98303 WLP Ball Dimensions
0.24mm
0.21mm
相关PDF资料 |
PDF描述 |
|---|---|
| MAX98304EWL+T | IC AMP AUDIO 3.2W MONO D 9WLP |
| MAX98306ETD+T | IC AMP AUDIO 3.7W STER D 14TDFN |
| MAX98307ETE+ | IC AMP AUD 3.3W MONO DG 16TQFN |
| MAX9830ETA+T | IC AMP MONO 2W CLASS D 8TDFN |
| MAX98310EWL+T | IC AMP AUD 1.4W CLASS AB 9WLP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX98304DEWL+T | 功能描述:音频放大器 Mono 3.2W Class D Amplifier RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| MAX98304EVKIT+ | 功能描述:音频 IC 开发工具 MAX98304 Eval Kit RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
| MAX98304EWL+ | 制造商:Maxim Integrated Products 功能描述:MONO CLASS D AMPLIFIER - Rail/Tube |
| MAX98304EWL+T | 功能描述:音频放大器 2W Mono Class D Amplifier RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| MAX98306ETD+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
发布紧急采购，3分钟左右您将得到回复。