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參數(shù)資料
| 型號： | MAX9724BETC+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 6/19頁 |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO .045W STER 12TQFN |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 系列： | DirectDrive® |
| 類型： | AB 類 |
| 輸出類型： | 耳機，2-通道（立體聲） |
| 在某負載時最大輸出功率 x 通道數(shù)量： | 63mW x 2 @ 32 歐姆 |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 特點： | 消除爆音，短路保護和熱保護，關閉 |
| 安裝類型： | 表面貼裝 |
| 供應商設備封裝： | 12-TQFN EP（3x3） |
| 封裝/外殼： | 12-WQFN 裸露焊盤 |
| 包裝： | 帶卷 (TR) |
| 配用： | MAX9724AEVKIT+-ND - EVALUATION KIT FOR MAX9724A/B MAX9724DEVKIT+-ND - KIT EVAL FOR MAX9724D |
To suppress this noise, and to provide a 2VRMS stan-
dard audio output level from a single 5V supply, the
MAX9724A can be configured as a line driver and
active lowpass filter. Figure 5 shows the MAX9724A
connected as 2-pole Rauch/multiple feedback filter with
a passband gain of 6dB and a -3dB (below passband)
cutoff frequency of approximately 27kHz (see Figure 6
for the Gain vs. Frequency plot).
Layout and Grounding
Proper layout and grounding are essential for optimum
performance. Connect PGND and SGND together at a
single point on the PC Board. Connect PVSS to SVSS
and bypass with a 1F capacitor. Place the power-sup-
ply bypass capacitor and the charge-pump hold
capacitor as close to the MAX9724 as possible. Route
PGND and all traces that carry switching transients
away from SGND and the audio signal path. The thin
QFN package features an exposed paddle that
improves thermal efficiency. Ensure that the exposed
paddle is electrically isolated from PGND, SGND,
and VDD. Connect the exposed paddle to SVSS only
when the board layout dictates that the exposed
paddle cannot be left floating.
UCSP Applications Information
For the latest application details on UCSP construction,
dimensions, tape carrier information, printed circuit
board techniques, bump-pad layout, and recommend-
ed reflow temperature profile, as well as the latest infor-
mation on reliability testing results, refer to the
Application Note
UCSP—A Wafer-Level Chip-Scale
Package available on Maxim’s website at www.maxim-
ic.com/ucsp.
MAX9724A/MAX9724B
60mW, DirectDrive, Stereo Headphone Amplifier
with Low RF Susceptibility and Shutdown
14
______________________________________________________________________________________
MAX9724A ACTIVE FILTER GAIN
vs. FREQUENCY
FREQUENCY (Hz)
GAIN
(dB)
100k
10k
-30
-25
-20
-15
-10
-5
0
5
10
-35
1k
1M
RL = 10k
Ω
Figure 6. Frequency Response of Active Filter of Figure 4
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9724BEUD | 制造商:Maxim Integrated Products 功能描述:- Rail/Tube |
| MAX9724BEUD+ | 制造商:Maxim Integrated Products 功能描述:AUD AMP HDPH 2CH STEREO 0.063W CLS-AB 14TSSOP - Rail/Tube |
| MAX9724BEUD+T | 制造商:Maxim Integrated Products 功能描述:AUD AMP HDPH 2CH STEREO 0.063W CLS-AB 14TSSOP - Tape and Reel |
| MAX9724BEUD-T | 制造商:Maxim Integrated Products 功能描述:- Tape and Reel |
| MAX9724CEBC+T | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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