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| 型号： | MAX9773EBP+TG45 |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/21页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO PWR 1.8W D 20UCSP |
| 标准包装： | 2,500 |
| 类型： | D 类 |
| 输出类型： | 2 通道（立体声） |
| 在某负载时最大输出功率 x 通道数量： | 1.8W x 2 @ 4 欧姆 |
| 电源电压： | 2.6 V ~ 5.5 V |
| 特点： | 消除爆音，差分输入，短路和热保护，关闭 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 20-UCSP（5x4） |
| 封装/外壳： | 20-WFBGA，CSPBGA |
| 包装： | 带卷 (TR) |
MAX9773
Detailed Description
The MAX9773 ultra-low EMI, filterless, stereo Class D
audio power amplifier incorporates several improve-
ments to switch-mode amplifier topology. The MAX9773
features output-driver AEL circuitry to reduce EMI. Zero
dead time technology maintains state-of-the art efficien-
cy and THD+N performance by allowing the output FETs
to switch simultaneously without cross conduction. The
MAX9773 offers Class AB performance with Class D effi-
ciency, while occupying minimal 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 config-
ured to accept a single-ended input signal.
Comparators monitor the MAX9773 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 (tON(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
(VOUT+ - VOUT-) to change. The minimum-width pulse
helps the device to achieve high levels of linearity.
1.8W, Filterless, Ultra-Low EMI,
Stereo Class D Audio Power Amplifier
10
______________________________________________________________________________________
OUT+
OUT-
VIN-
VIN+
VOUT+ - VOUT-
tON(MIN)
tSW
Figure 1. MAX9773 Outputs with an Input Signal Applied
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX9773ETG+ | 功能描述:音频放大器 Integrated Circuits (ICs) RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| MAX9773ETG+T | 功能描述:音频放大器 Integrated Circuits (ICs) RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel |
| MAX9773EWP+G45 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX9773EWP+TG45 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX9775EBX+G45 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
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