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Part Number: MAX9754

 

 

 

 

Description: The MAX9752/MAX9753/MAX9754 combine a high-efficiency,filterless, stereo Class D audio power amplifier...


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MAX9754 General Description


The MAX9752/MAX9753/MAX9754 combine a high-efficiency,filterless, stereo Class D audio power amplifier with a DirectDrive™ headphone amplifier in a single device. The Class D amplifier operates from a single 4.5V to 5.5V supply and provides 2.2W per channel into a 4 load. The headphone amplifier operates from a single 3V to 5.5V supply, and uses Maxim's patented DirectDrive architecture to produce a ground-referenced output from a single supply.

The MAX9754 features a Class D stereo speaker amplifier and headphone driver. The MAX9752 adds an analog volume control and a BEEP input. The MAX9753 adds a stereo 2:1 input multiplexer. All devices feature logic-selectable gain, and a headphone sense input that detects the presence of a headphone.

The MAX9752/MAX9753/MAX9754 come in 28-pin thin QFN (5mm x 5mm x 0.8mm) packages, and are specified over the extended -40°C to +85°C temperature range. For a pin-for-pin-compatible Class AB version of these devices, refer to the MAX9750/MAX9751/MAX9755 data sheet.

MAX9754 Maximum Ratings

VDD, PVDD, HPVDD, CPVDD to GND ....................... -0.3V to +6V
GND to PGND or CPGND ................................... -0.3V to +0.3V
CPVSS or VSS to PGND ...................................... -6.0V to +0.3V
C1N to PGND .......................................(CPVSS - 0.3V) to +0.3V
C1P to PGND....................................... -0.3V to (CPVDD + 0.3V)
HP_ to PGND......................... (HPVSS - 0.3V) to (HPVDD + 0.3V)
HP_ to PGND........................................................... -3V to +3V
Any Other Pin to PGND ........................... -0.3V to (VDD + 0.3V)
Duration of OUT_ Short Circuit to PGND or PVDD......Continuous
Duration of OUT_+ Short Circuit to OUT_- ..............Continuous
Duration of HP_ Short Circuit to PGND ....................Continuous
Continuous Current Into/Out of PVDD, OUT_, PGND ..........1.7A
Continuous Current Into/Out of CPVDD, C1N, CPGND,
   C1P, CPVSS, VSS, HPVDD, HP_ ......................................0.85A
Continuous Input Current (all other pins) .................... ±20mA
Continuous Power Dissipation (TA = +70°C)
   28-Pin TQFN (derate 21.3mW/°C above +70°C) ....1702mW
Operating Temperature Range .......................-40°C to +85°C
Storage Temperature Range ........................-65°C to +150°C
Junction Temperature...................................................+150°C
Lead Temperature (soldering, 10s) .............................+300°C

Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.

MAX9754 Features

` PC2001 Compliant
` 2.2W Class D Stereo Speaker Amplifier
` Pin-for-Pin Compatible with Class AB MAX9750/MAX9751/MAX9755
` 85% Efficiency (RL = 8, POUT = 1W)
` 62mW DirectDrive Headphone Amplifier
` High PSRR (70dB at 1kHz)
` Analog Volume Control (MAX9752)
` Beep Input with Glitch Filter (MAX9752)
` 2:1 Stereo Input MUX (MAX9753)
` ±8kV ESD-Protected Headphone Outputs
` No Output DC-Blocking Capacitors
` Industry-Leading Click-and-Pop Suppression

MAX9754 Typical Application

·Notebook PCs
·Flat-Panel TVs
·Tablet PCs
·PC Displays
·Portable DVDs
·LCD Projectors

MAX9754 Connection Diagram

MAX9754  Connection Diagram

MAX9754 datasheet

MAX9754
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