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参数资料
| 型号： | MAX98300SETA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/14页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUD SPKR 2W MONO D 8TDFN |
| 标准包装： | 2,500 |
| 类型： | D 类 |
| 输出类型： | 1-通道（单声道） |
| 在某负载时最大输出功率 x 通道数量： | 2.6W x 1 @ 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： | * |
| 供应商设备封装： | * |
| 封装/外壳： | * |
| 包装： | * |
8
Maxim Integrated
Mono 2.6W Class D Amplifier
MAX98300
Detailed Description
The MAX98300 features industry-leading quiescent cur-
rent, low-power shutdown mode, comprehensive click-
and-pop suppression, and excellent RF immunity.
The device offers Class AB audio performance with
Class D efficiency in a minimal board-space solution.
The Class D amplifier features spread-spectrum modula-
tion, edge-rate, and overshoot control circuitry that offers
significant improvements to switch-mode amplifier radi-
ated emissions.
The MAX98300 amplifier features click-and-pop sup-
pression that reduces audible transients on startup and
shutdown. The amplifier includes thermal overload and
short-circuit protection.
Class D Speaker Amplifier
The MAX98300 filterless Class D amplifier offers much
higher efficiency than Class AB amplifiers. The high
efficiency of a Class D amplifier is due to the switching
operation of the output stage transistors. Any power loss
associated with the Class D output stage is mostly due to
the I2R loss of the MOSFET on-resistance and quiescent
current overhead.
Ultra-Low EMI Filterless Output Stage
Traditional Class D amplifiers require the use of external
LC filters, or shielding, to meet EN55022B electromag-
netic-interference (EMI) regulation standards. Maxim’s
patented active emissions-limiting edge-rate control
circuitry and spread-spectrum modulation reduces EMI
emissions, while maintaining up to 89% efficiency.
Maxim’s patented spread-spectrum modulation mode
flattens wideband spectral components, while propri-
etary techniques ensure that the cycle-to-cycle variation
of the switching period does not degrade audio repro-
duction or efficiency. The MAX98300’s spread-spectrum
modulator randomly varies the switching frequency by
Q
10kHz around the center frequency (300kHz). Above
10MHz, the wideband spectrum looks like noise for EMI
purposes (Figure 1).
Speaker Current Limit
If the output current of the speaker amplifier exceeds the
current limit (2A typ), the MAX98300 disables the out-
puts for approximately 130Fs. At the end of 130Fs, the
outputs are re-enabled. If the fault condition still exists,
the MAX98300 continues to disable and re-enable the
outputs until the fault condition is removed.
Selectable Gain
The MAX98300 offers five programmable gain selections
through a single gain input (GAIN).
Figure 1. EMI with 60cm of Speaker Cable and No Output Filtering
Table 1. Gain Control Configuration
FREQUENCY (MHz)
AMPLITUDE
(dB
V/m)
900
800
700
600
500
400
300
200
100
0
10
20
30
40
50
-10
30
1000
EN55022B LIMIT
GAIN PIN
MAXIMUM GAIN (dB)
Connect to PVDD
12
Connect to PVDD through
100kI
±5%
9
Not connected
6
Connect to PGND through
100kI
±5%
3
Connect to PGND
0
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相关代理商/技术参数 |
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|---|---|
| MAX98302ETD+ | 功能描述:IC AMP STER CLASS D 2.4W 14TDFN RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:H 类 输出类型:耳机，2-通道（立体声） 在某负载时最大输出功率 x 通道数量:35mW x 2 @ 16 欧姆 电源电压:1.62 V ~ 1.98 V 特点:I²C，麦克风，静音，短路保护，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) |
| MAX98302ETD+T | 功能描述:音频放大器 2W Stereo Class D Amplifier 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 |
| MAX98302EVKIT+ | 功能描述:音频 IC 开发工具 MAX98302 Eval Kit RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
| MAX98303EVKIT+ | 功能描述:音频 IC 开发工具 MAX98303 Eval Kit RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V |
| MAX98303EWE+ | 制造商:Maxim Integrated Products 功能描述:STEREO CLASS D AMPLIFIER - Rail/Tube |
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