參數(shù)資料
型號(hào)： MAX9700BEVKIT
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 2/20頁(yè)
文件大?。?/td> 0K
描述： EVAL KIT FOR MAX9700
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 1
放大器類(lèi)型： D 類(lèi)
輸出類(lèi)型： 1-通道（單聲道）
在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量： 1.6W x 1 @ 6 歐姆
電源電壓： 2.5 V ~ 5.5 V
工作溫度： 0°C ~ 70°C
板類(lèi)型： 完全填充
已用 IC / 零件： MAX9700，MAX9712
已供物品： 板
MAX9700
1.2W, Low-EMI, Filterless,
Class D Audio Amplifier
10
______________________________________________________________________________________
output a 50% duty cycle square wave when no signal is
present. With no filter, the square wave appears across
the load as a DC voltage, resulting in finite load current,
increasing power consumption. When no signal is pre-
sent at the input of the MAX9700, the outputs switch as
shown in Figure 4. Because the MAX9700 drives the
speaker differentially, the two outputs cancel each other,
resulting in no net Idle Mode voltage across the
speaker, minimizing power consumption.
Efficiency
Efficiency of a class D amplifier is attributed to the
region of operation of the output stage transistors. In a
class D amplifier, the output transistors act as current-
steering switches and consume negligible additional
power. Any power loss associated with the class D out-
put stage is mostly due to the I R loss of the MOSFET
on-resistance, and quiescent current overhead.
The theoretical best efficiency of a linear amplifier is
78%; however, that efficiency is only exhibited at peak
output powers. Under normal operating levels (typical
music reproduction levels), efficiency falls below 30%,
whereas the MAX9700 still exhibits >90% efficiencies
under the same conditions (Figure 5).
Figure 2. MAX9700 Output with an Input Signal Applied (SSM Mode)
VOUT+ - VOUT-
tSW
VIN-
VIN+
OUT+
OUT-
tON(MIN)
Idle Mode is a trademark of Maxim Integrated Products.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX9700CEBC 制造商:Maxim Integrated Products 功能描述:1.2W LOW EMI FILTERLESS CLASS D - Rail/Tube
MAX9700CEBC+ 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX9700CEBC+T 功能描述:音頻放大器 1.2W L-EMI Filterles Class D Audio Amp RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)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
MAX9700CEBC-T 功能描述:音頻放大器 RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類(lèi)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
MAX9700CETB 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
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