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參數(shù)資料
| 型號(hào)： | MAX9714ETJ+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 18/18頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP AUDIO PWR 8W STER 32TQFN |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | D 類 |
| 輸出類型： | 2 通道（立體聲） |
| 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量： | 8W x 2 @ 16 歐姆 |
| 電源電壓： | 10 V ~ 25 V |
| 特點(diǎn)： | 消除爆音，差分輸入，靜音，短路和熱保護(hù)，關(guān)機(jī) |
| 安裝類型： | 表面貼裝 |
| 供應(yīng)商設(shè)備封裝： | 32-TQFN-EP（7x7） |
| 封裝/外殼： | 32-WQFN 裸露焊盤 |
| 包裝： | 帶卷 (TR) |
or power-up, the input amplifiers are muted and an
internal loop sets the modulator bias voltages to the
correct levels, preventing clicks and pops when the H-
bridge is subsequently enabled. Following startup, a
soft-start function gradually un-mutes the input ampli-
fiers. The value of the soft-start capacitor has an impact
on the click/pop levels. For optimum performance, CSS
should be at least 0.18F.
Mute Function
The MAX9713/MAX9714 feature a clickless/popless
mute mode. When the device is muted, the outputs
stop switching, muting the speaker. Mute only affects
the output state, and does not shut down the device. To
mute the MAX9713/MAX9714, drive SS to GND by
using a MOSFET pulldown (Figure 4). Driving SS to
GND during the power-up/down or shutdown/turn-on
cycle optimizes click-and-pop suppression.
Applications Information
Filterless Operation
Traditional Class D amplifiers require an output filter to
recover the audio signal from the amplifier’s PWM out-
put. The filters add cost, increase the solution size of
the amplifier, and can decrease efficiency. The tradi-
tional PWM scheme uses large differential output
swings (2 VDD peak-to-peak) and causes large ripple
currents. Any parasitic resistance in the filter compo-
nents results in a loss of power, lowering the efficiency.
The MAX9713/MAX9714 do not require an output filter.
The devices rely on the inherent inductance of the
speaker coil and the natural filtering of both the speak-
er and the human ear to recover the audio component
of the square-wave output. Eliminating the output filter
results in a smaller, less costly, more efficient solution.
Because the frequency of the MAX9713/MAX9714 out-
put is well beyond the bandwidth of most speakers,
voice coil movement due to the square-wave frequency
MAX9713/MAX9714
6W, Filterless, Spread-Spectrum
Mono/Stereo Class D Amplifiers
_______________________________________________________________________________________
9
Figure 3. MAX9714 Efficiency vs. Class AB Efficiency
0
30
20
10
40
50
60
70
80
90
100
02
4
6
EFFICIENCY vs. OUTPUT POWER
OUTPUT POWER (W)
EFFICIENCY
(%)
MAX9714
VDD = 15V
f = 1kHz
RL = 16
CLASS AB
Figure 2. SSM Radiated Emissions
MAX9713/
MAX9714
SS
0.18F
GPIO
MUTE SIGNAL
Figure 4. MAX9713/MAX9714 Mute Circuit
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX9715ETE+T | IC AMP AUDIO PWR 2.8W D 16TQFN |
| MAX9716EUA+T | IC AMP AUDIO PWR 1.4W MONO 8MSOP |
| MAX9718DEUB+ | IC AMP AUDIO PWR 1.4W AB 10MSOP |
| MAX97200AEWC+T | IC HEADPHONE AMPLIFIER 12WLP |
| MAX9720AEUE+T | IC AMP AUDIO .05W STER 16TSSOP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9714EVKIT | 功能描述:音頻放大器 Evaluation Kit for the MAX9704 MAX9714 RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX9715ETE+ | 功能描述:音頻放大器 2.8W Low-EMI Stereo Class D Amplifier RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX9715ETE+T | 功能描述:音頻放大器 2.8W Low-EMI Stereo Class D Amplifier RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX9715EUE+ | 制造商:Maxim Integrated Products 功能描述:AUD AMP SPKR 2CH STEREO 2.8W CLS-D 16TSSOP - Rail/Tube |
| MAX9715EUE+T | 制造商:Maxim Integrated Products 功能描述:AUD AMP SPKR 2CH STEREO 2.8W CLS-D 16TSSOP - Tape and Reel |
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