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MAX9744ETH+T

更新时间： 2024-11-23 13:02:55
品牌 Logo 应用领域
美信 - MAXIM 放大器
页数 文件大小 规格书
1页 118K
描述
Volume Control Circuit,

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中文翻译

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MAX9744ETH+T 技术参数

是否无铅： 不含铅是否Rohs认证： 符合
生命周期：Active包装说明：,
Reach Compliance Code：compliantECCN代码：EAR99
HTS代码：8542.39.00.01Factory Lead Time：19 weeks
风险等级：1.61商用集成电路类型：VOLUME CONTROL CIRCUIT
湿度敏感等级：1峰值回流温度（摄氏度）：NOT SPECIFIED
处于峰值回流温度下的最长时间：NOT SPECIFIEDBase Number Matches：1

MAX9744ETH+T 数据手册

  
XX-XXXX; Rev 0; 3/08  
20W Stereo Class D Speaker Amplifier  
with Volume Control  
MAX974  
General Description  
Features  
The MAX9744 20W stereo Class D audio power amplifi-  
er provides Class AB amplifier performance with Class  
D efficiency, conserving board space and eliminating  
the need for a bulky heatsink. This device features sin-  
gle-supply operation, adjustable gain, shutdown mode,  
SYNC output, speaker mute, and industry-leading click-  
and-pop suppression.  
♦ Wide 4.5V to 14V Power-Supply Voltage Range  
♦ Filterless Spread-Spectrum ModulatiLowers  
Radiated RF Emissions from Speakeables  
♦ 20W Stereo Output (4Ω, V  
= 1T+N = 10%)  
DD  
2
♦ Integrated Volume Control (I C or Anal
♦ Low 0.04% THD+N  
The MAX9744 features a 64-step dual-mode (analog or  
digital), programmable volume control and mute func-  
tion. The MAX9744 operates from a 4.5V to 14V single  
supply and can deliver up to 20W per channel into a  
4Ω speaker with a 14V supply.  
The MAX9744 offers two modulation schemes: a fixed-  
frequency modulation mode that allows one of several  
preset switching frequencies to be selected, and a  
spread-spectrum modulation mode that helps to  
reduce EMI-radiated emissions.  
♦ High 75dB PSRR  
♦ High 93% Efficiency (20W)  
♦ Integrated Clic-Pop Suression  
♦ Low-Power Shue  
♦ Short-Ciuit and rmal-Overload Protection  
♦ Available i44-PThin QFN-EP  
(7m.8mm)  
The MAX9744 features high 75dB PSRR, low 0.04%  
THD+N, and SNR in excess of 90dB. Robust short-cir-  
cuit and thermal-overload protection prevent device  
damage during a fault condition. The MAX9744 is avail-  
able in a 44-pin thin QFN-EP (7mm x 7mm x 0.8mm
package and is specified over the extended -40°C to  
+85°C temperature range.  
Ordering Information  
PIN-  
PACKAGE  
PKG  
CODE  
P
TEMP RANGE  
M9744ETH+  
-40°C to +85°C 44 TQFN-EP*  
T4477-3  
Applicats  
Denotes a lead-free package.  
*EP = Exposed paddle.  
Flat-Panel Televisions  
PC Speaker Systems  
Multimedia Docking Stations  
Pin Configuration appears at end of data sheet.  
Simplified Block Diagram  
TO 3.6V  
4.5V TO 14V  
MAX9744 EMI WITH FERRITE BEAD FILTERS  
MAX97
(V = 12V, 1m CABLE, 8Ω LOAD)  
DD  
40  
35  
30  
25  
20  
15  
10  
5
VOLUME  
CONTROL  
BIAS  
OVER 20dB MARGIN  
TO EN55022 B LIMIT  
MUTE  
SHUTDOWN  
CONTROL  
2
I C  
ANALOG  
CONTROL  
0
SYNC  
SYNCOUT  
30  
80  
120 160 200 240 280  
140 260 300  
FREQUENCY (MHz)  
OSCILLATOR  
60  
100  
180  
220  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,  
or visit Maxim’s website at www.maxim-ic.com.  
1

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MAX9744ETH+T 替代型号

型号 品牌 替代类型 描述 数据表
MAX9744ETH+ MAXIM

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 Volume Control Circuit, 2 Channel(s), BICMOS, 7 X 7 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, MO

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