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参数资料
| 型号： | MAX9707ETX+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/25页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO 2.3W STER+1 36TQFN |
| 标准包装： | 2,500 |
| 类型： | D 类 |
| 输出类型： | 2-通道（立体声）带超低音器 |
| 在某负载时最大输出功率 x 通道数量： | 2.3W x 3 @ 4 欧姆 |
| 电源电压： | 4.5 V ~ 5.5 V |
| 特点： | 消除爆音，短路保护和热保护，关闭 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 36-TQFN 裸露焊盘（6x6） |
| 封装/外壳： | 36-WFQFN 裸露焊盘 |
| 包装： | 带卷 (TR) |
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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相关代理商/技术参数 |
参数描述 |
|---|---|
| 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 |
| MAX9708ETN/V+TD | 制造商:Maxim Integrated Products 功能描述:20W/40W FILTERLESS, SPREAD SPECTRUM, MONO/STEREO, CLASS D AM - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC AMP AUDIO PWR 42W STER 56TQFN 制造商:Maxim Integrated Products 功能描述:Filterless Class D Amp Mono/Stereo |
| MAX9708ETN+ | 制造商:Maxim Integrated Products 功能描述:AUD AMP SPKR 1CH MONO/2CH STEREO 42W/21W CLS-D 56TQFN EP - Rail/Tube |
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