Features: ` 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
` Low-Power Shutdown Mode
` Industry-Leading Click-and-Pop Suppression
` Low 0.01% THD+N at 1kHz
` Short-Circuit and Thermal-Overload Protection
` Selectable Gain Settings (15dB, 16.5dB, 18dB,and 19.5dB)
` ±8kV ESD-Protected Headphone Driver Outputs
` Available in Space-Saving, Thermally Efficient Package
28-Pin Thin QFN (5mm x 5mm x 0.8mm)Application·Notebook PCs
·Flat-Panel TVs
·Tablet PCs
·Multimedia Monitors
·Portable DVD Players
·LCD ProjectorsPinout
SpecificationsSupply Voltage (VDD, PVDD, HPVDD, CPVDD to GND)..........+6V
GND to PGND..................................................................±0.3V
CPVSS, C1N, VSS to GND .......................-6.0V to (GND + 0.3V)
HPOUT_ to GND................................................................±3V
Any Other Pin .........................................-0.3V to (VDD + 0.3V)
Duration of OUT_ _ Short Circuit to GND or PVDD...Continuous
Duration of OUT_+ Short Circuit to OUT_- ............Continuous
Duration of HPOUT_ Short Circuit to GND,
VSS or HPVDD....................................................Continuous
Continuous Current (PVDD, OUT_ _, PGND) ....................1.7A
Continuous Current (CPVDD, C1N, C1P, CPVSS, VSS, HPVDD,
HPOUT_)..................................................................850mA
Continuous Input Current (all other pins) ...................±20mA
Continuous Power Dissipation (TA = +70°C)
28-Pin Thin QFN (derate 20.8mW/°C above +70°C) ..1667mW
Junction Temperature.................................................+150°C
Operating Temperature Range ....................-40°C to +85°C
Storage Temperature Range .....................-65°C to +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.
DescriptionThe MAX9779 combines a stereo, 2.6W audio power amplifier and stereo DirectDrive™ 110mW headphone amplifier in a single device. The headphone amplifier MAX9779 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 through the Class AB speaker amplifiers.
The MAX9779 features 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.
The MAX9779 is offered in a space-saving, thermally efficient 28-pin thin QFN (5mm x 5mm x 0.8mm) package.The device has thermal-overload and output short-circuit protection, and is specified over the extended -40°C to +85°C temperature range.
MAX9779 Data Sheet
