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MAX9750|MAX9751|MAX9755 PDF预览

MAX9750|MAX9751|MAX9755

更新时间: 2024-11-24 23:52:11
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描述
2.6W Stereo Audio Power Amplifiers and DirectDrive Headphone Amplifiers

MAX9750|MAX9751|MAX9755 数据手册

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19-3006; Rev 0; 1/04  
2.6W Stereo Audio Power Amplifiers and  
DirectDrive Headphone Amplifiers  
General Description  
Features  
The MAX9750/MAX9751/MAX9755 combine a stereo,  
2.6W audio power amplifier and stereo DirectDrive  
110mW headphone amplifier in a single device. The  
headphone amplifier uses Maxim’s patented DirectDrive  
architecture that produces a ground-referenced output  
from a single supply, eliminating the need for large DC-  
blocking capacitors, saving cost, space, and component  
height. A high 90dB PSRR and low 0.01% THD+N  
ensures clean, low-distortion amplification of the audio  
signal.  
No DC-Blocking Capacitors Required—Provides  
Industry’s Most Compact Notebook Audio  
Solution  
PC2001 Compliant  
5V Single-Supply Operation  
Class AB 2.6W Stereo BTL Speaker Amplifiers  
110mW DirectDrive Headphone Amplifiers  
High 90dB PSRR  
The MAX9750 features an analog volume control, and a  
BEEP input. The MAX9751 features a 2:1 input multiplexer,  
allowing multiple audio sources to be selected. All devices  
feature a single-supply voltage, a shutdown mode, logic-  
selectable gain, and a headphone sense input. Industry-  
leading click-and-pop suppression eliminates audible  
transients during power and shutdown cycles.  
Low-Power Shutdown Mode  
Industry-Leading Click-and-Pop Suppression  
Low 0.01% THD+N at 1kHz  
Short-Circuit and Thermal Protection  
Selectable Gain Settings  
The MAX9750/MAX9751/MAX9755 are offered in space-  
saving, thermally efficient 28-pin thin QFN (5mm x 5mm  
x 0.8mm) and 28-pin TSSOP-EP packages. Both devices  
have thermal-overload and output short-circuit protec-  
tion, and are specified over the extended -40°C to +85°C  
temperature range.  
Analog Volume Control (MAX9750)  
Beep Input with Glitch Filter (MAX9750)  
2:1 Stereo Input MUX (MAX9751)  
±±kV ꢀSD-Protected Headphone Driver Outputs  
Applications  
Available in Space-Saving, Thermally ꢀfficient  
Packages  
Notebook PCs  
Tablet PCs  
Flat-Panel TVs  
PC Displays  
2±-Pin Thin QFN (5mm x 5mm x 0.±mm)  
2±-Pin TSSOP-ꢀP  
Portable DVD  
LCD Projectors  
Ordering Information  
Simplified Block Diagrams  
PIN-  
PACKAGꢀ  
MAXIMUM  
GAIN (dB)  
PART  
TꢀMP RANGꢀ  
MAX9750AETI*-40°C to +85°C 28 Thin QFN  
MAX9750AEUI*-40°C to +85°C 28 TSSOP-EP**  
MAX9750BETI*-40°C to +85°C 28 Thin QFN  
MAX9750BEUI*-40°C to +85°C 28 TSSOP-EP**  
MAX9750CETI-40°C to +85°C 28 Thin QFN  
MAX9750CEUI*-40°C to +85°C 28 TSSOP-EP**  
13.5  
13.5  
19.5  
19.5  
10.5  
10.5  
10.5  
10.5  
10.5  
10.5  
MAX9751ETI*†  
-40°C to +85°C 28 Thin QFN  
MAX9751EUI*†  
-40°C to +85°C 28 TSSOP-EP**  
VOL  
MAX9755AETI*-40°C to +85°C 28 Thin QFN  
MAX9755AEUI*-40°C to +85°C 28 TSSOP-EP**  
BEEP  
*Future product—contact factory for availability.  
**EP = Exposed Paddle.  
Lead-free package.  
MAX9750  
Simplifed Block Diagrams continued at end of data sheet.  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  

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