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參數(shù)資料
| 型號(hào)： | MAX9701 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 1.3W, Filterless, Stereo Class D Audio Power Amplifier |
| 中文描述： | 1.3W、無需濾波、立體聲D類音頻功率放大器 |
| 文件頁數(shù)： | 10/21頁 |
| 文件大?。?/td> | 1322K |
| 代理商： | MAX9701 |
M
Detailed Description
The MAX9701 filterless, stereo class D audio power
amplifier features several improvements to switch-mode
amplifier technology. The MAX9701 offers class AB per-
formance with class D efficiency, while occupying mini-
mal board space. A unique, filterless modulation
scheme, synchronizable switching frequency, and
spread-spectrum switching mode create a compact,
flexible, low-noise, efficient audio power amplifier. The
differential input architecture reduces common-mode
noise pickup, and can be used without input-coupling
capacitors. The inputs can also be configured to accept
a single-ended input signal.
Comparators monitor the MAX9701 inputs and compare
the complementary input voltages to the sawtooth wave-
form. 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 (t
ON(MIN)
) at the output of the sec-
ond comparator (Figure 1). 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
(V
OUT+
- V
OUT-
) to change. The minimum-width pulse
helps the device to achieve high levels of linearity.
1.3W, Filterless, Stereo Class D Audio
Power Amplifier
10
______________________________________________________________________________________
OUT+
OUT-
V
IN-
V
IN+
V
OUT+
- V
OUT-
t
ON(MIN)
t
SW
Figure 1. MAX9701 Outputs with an Input Signal Applied
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| MAX9708ETN | 20W/40W, Filterless, Spread-Spectrum, Mono/Stereo, Class D Amplifier |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9701EBP | 制造商:Maxim Integrated Products 功能描述:1.3W FILTERLESS STEREO CLASS D AU - Rail/Tube |
| MAX9701EBP+ | 制造商:Maxim Integrated Products 功能描述:AUD AMP SPKR 2CH STEREO 2.2W CLS-D 20UCSP - Rail/Tube |
| MAX9701EBP+T | 制造商:Maxim Integrated Products 功能描述:AUD AMP SPKR 2CH STEREO 2.2W CLS-D 20UCSP - Tape and Reel |
| MAX9701EBP+TG45 | 功能描述:音頻放大器 1.3W Filterless Class D Audio Amp 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 |
| MAX9701EBP-T | 制造商:Maxim Integrated Products 功能描述:1.3W, FILTERLESS, STEREO CLASS D AUDIO POWER - Tape and Reel |
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