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參數(shù)資料
| 型號： | MAX98304EWL+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 12/12頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP AUDIO 3.2W MONO D 9WLP |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 類型： | D 類 |
| 輸出類型： | 1-通道（單聲道） |
| 在某負載時最大輸出功率 x 通道數(shù)量： | 3.2W x 1 @ 4 歐姆 |
| 電源電壓： | 2.5 V ~ 5.5 V |
| 特點： | 消除爆音，差分輸入，短路和熱保護，關閉 |
| 安裝類型： | 表面貼裝 |
| 供應商設備封裝： | 9-WLP（1.00x1.00） |
| 封裝/外殼： | 9-WFBGA，WLBGA |
| 包裝： | 帶卷 (TR) |
9
Maxim Integrated
Mono 3.2W Class D Amplifier
MAX98304
Shutdown
The IC features a low-power shutdown mode, drawing
less than 0.1FA (typ) of supply current. Drive SHDN low
to put the IC into shutdown.
Click-and-Pop Suppression
The IC speaker amplifier features Maxim’s comprehen-
sive 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, size, and decreases efficiency
and THD+N performance. 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 2.5V to 5.5V. Bypass PVDD with a 0.1FF and 10FF
capacitor 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 high-
pass 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 CIN is:
IN
3dB
2R
C
[ F]
f
π×
=
F
where f-3dB is the -3dB corner frequency and RIN is the
input resistance shown in the Electrical Characteristics
table. Use capacitors with adequately low voltage-coef-
ficient 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 decreases 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 being delivered to the speaker. If power is
delivered through 10mI of total speaker trace, 1.99W
is being 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. MAX98304 WLP Ball Dimensions
0.18mm
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|---|---|
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| 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 |
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX98306ETD+ | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX98306ETD+T | 功能描述:音頻放大器 Speaker Amplifier RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX98306EVKIT# | 功能描述:音頻 IC 開發(fā)工具 MAX98306 Eval Kit RoHS:否 制造商:Texas Instruments 產品:Evaluation Kits 類型:Audio Amplifiers 工具用于評估:TAS5614L 工作電源電壓:12 V to 38 V |
| MAX98307ETE+ | 功能描述:音頻放大器 3.3W Mono Class D Amplifier RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX98307ETE+T | 功能描述:音頻放大器 3.3W Mono Class D Amplifier RoHS:否 制造商:STMicroelectronics 產品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
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