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參數(shù)資料
| 型號： | MAX9706ETX+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 6/25頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC AMP AUDIO 2.3W STER+1 36TQFN |
| 標準包裝： | 2,500 |
| 系列： | DirectDrive® |
| 類型： | D 類 |
| 輸出類型： | 2-通道（立體聲）帶立體聲耳機和超低音器 |
| 在某負載時最大輸出功率 x 通道數(shù)量： | 2.3W x 3 @ 4 歐姆; 95mW x 2 @ 16 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： | 帶卷 (TR) |
MAX9706/MAX9707
3-Channel, 2.3W, Filterless Class D Amplifiers
with Active Crossover
14
______________________________________________________________________________________
Class D Speaker Amplifier
Spread-spectrum modulation and synchronizable switch-
ing frequency significantly reduce EMI emissions.
Comparators monitor the audio inputs and compare the
complementary input voltages to a sawtooth waveform.
The comparators trip when the input magnitude of the
sawtooth exceeds their corresponding input voltage. Both
comparators reset at a fixed time after the rising edge of
the second comparator trip point, generating a minimum-
width pulse (tON(MIN),100ns typ) at the output of the sec-
ond comparator (Figure 2). As the input voltage increases
or decreases, the duration of the pulse at one output
increases while the other output pulse duration remains
the same. This causes the net voltage across the speaker
(VOUT+ - VOUT-) to change. The minimum-width pulse
helps the device to achieve high levels of linearity.
Operating Modes
Fixed-Frequency (FFM) Mode
The MAX9706/MAX9707 feature two fixed-frequency
modes. Connect SYNC_IN to GND to select a 1.1MHz
switching frequency. Float SYNC to select a 1.34MHz
switching frequency. The frequency spectrum of the
MAX9706/MAX9707 consists of the fundamental
switching frequency and its associated harmonics (see
the Wideband Output Spectrum graph in the Typical
Operating Characteristics). Program the switching fre-
quency so the harmonics do not fall within a sensitive
frequency band (Table 1). Audio reproduction is not
affected by changing the switching frequency.
OUT+
OUT-
VIN-
VIN+
VOUT_+ - VOUT_-
tON(MIN)
tSW
Figure 2. Outputs with an Input Signal Applied (FFM Mode)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9706EVKIT | 功能描述:放大器 IC 開發(fā)工具 RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V |
| 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 |
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