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參數(shù)資料
| 型號： | MAX9707ETX+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 7/25頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP AUDIO 2.3W STER+1 36TQFN |
| 標準包裝： | 50 |
| 類型： | D 類 |
| 輸出類型： | 2-通道（立體聲）帶超低音器 |
| 在某負載時最大輸出功率 x 通道數(shù)量： | 2.3W x 3 @ 4 歐姆 |
| 電源電壓： | 4.5 V ~ 5.5 V |
| 特點： | 消除爆音，短路保護和熱保護，關(guān)閉 |
| 安裝類型： | 表面貼裝 |
| 供應(yīng)商設(shè)備封裝： | 36-TQFN 裸露焊盤（6x6） |
| 封裝/外殼： | 36-WFQFN 裸露焊盤 |
| 包裝： | 管件 |
MAX9706/MAX9707
3-Channel, 2.3W, Filterless Class D Amplifiers
with Active Crossover
______________________________________________________________________________________
15
Spread-Spectrum (SSM) Mode
The MAX9706/MAX9707 feature a unique spread-spec-
trum mode that flattens the wideband spectral compo-
nents, improving EMI emissions that can be radiated by
the speaker and cables. Enable SSM mode by setting
SYNC_IN = VDD (Table 1). In SSM mode, the switching
frequency varies randomly by ±50kHz around the cen-
ter frequency (1.15MHz). The modulation scheme
remains the same, but the period of the sawtooth wave-
form changes from cycle to cycle (Figure 3). Instead of
a large amount of spectral energy present at multiples
of the switching frequency, the energy is now spread
over a bandwidth that increases with frequency. Above
a few megahertz, the wideband spectrum looks like
white noise for EMI purposes. A proprietary amplifier
topology ensures this does not corrupt the noise floor in
the audio bandwidth.
VOUT_+ - VOUT_-
tSW
VIN_-
VIN_+
OUT_+
OUT_-
tON(MIN)
Figure 3. Output with an Input Signal Applied (SSM Mode)
Table 1. Operating Modes
SYNC_IN
MODE
GND
FFM with fOSC = 1100kHz
FLOAT
FFM with fOSC = 1340kHz
VDD
SSM with fOSC = 1150kHz ±50kHz
Clocked
FFM with fOSC = external clock frequency
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9707ETX+ | 功能描述:音頻放大器 Integrated Circuits (ICs) 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX9707ETX+T | 功能描述:音頻放大器 Integrated Circuits (ICs) 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: 安裝風格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel |
| MAX9708ECB+D | 制造商:Maxim Integrated Products 功能描述:AUD AMP SPKR 1CH MONO/2CH STEREO 42W/21W CLS-D 64TQFP EP - Rail/Tube |
| MAX9708ECB+TD | 制造商:Maxim Integrated Products 功能描述:AUD AMP SPKR 1CH MONO/2CH STEREO 42W/21W CLS-D 64TQFP EP - Tape and Reel |
| MAX9708ETN | 制造商:Maxim Integrated Products 功能描述:20W/40W FILTERLESS, SPREAD-SPECTRUM, MONO/STE - Rail/Tube |
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