Features: ` Industry-Leading, Ultra-High 100dB PSRR
` PC99/01 Compliant
` 3W BTL Stereo Speaker Amplifier
` 200mW Stereo Headphone Amplifier
` Low 0.002% THD+N
` Patented Click-and-Pop Suppression
` ESD-Protected Outputs
` Low Quiescent Current: 13mA
` Low-Power Shutdown Mode: 10A
` MUTE Function
` Headphone Sense Input
` Stereo 2:1 Input Multiplexer
` Optional 2-Wire, I2C-Compatible or Parallel Interface
` Tiny 28-Pin Thin QFN (5mm * 5mm * 0.8mm) and TSSOP-EP PackagesApplication·Notebooks
·Portable DVD Players
·Tablet PCs
·PC Audio Peripherals
·CamcordersPinout
SpecificationsVDD to GND ...........................................................................+6V
SVDD to GND ..........................................................................+6V
SVDD to VDD..........................................................................-0.3V
PVDD to VDD .......................................................................±0.3V
PGND to GND......................................................................±0.3V
All Other Pins to GND...................................-0.3V to (VDD + 0.3V)
Continuous Input Current (into any pin except power-supply
and output pins) ..............................................................±20mA
Continuous Power Dissipation
28-Pin Thin QFN (derate 20.8mW/°C above +70°C) ...1667mW
28-Pin TSSOP-EP (derate 23.8mW/°C above +70°C) ..1905mW
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.
DescriptionThe MAX9762combines a stereo or mono 3W bridge-tied load (BTL) audio power amplifier, stereo single-ended headphone amplifier, headphone sensing, and a 2:1 input multiplexer all in a tiny 28-pin thin QFN package. These devices operate from a single 4.5V to 5.5V supply and feature an industry-leading 100dB PSRR, allowing these MAX9762 to operate from noisy supplies without the addition of a linear regulator. An ultra-low 0.002% THD+N ensures clean, low-distortion amplification of the audio signal. Patented clickand- pop suppression eliminates audible transients on power and shutdown cycles. Power-saving features of MAX9762 include low 4mV VOS (minimizes DC current drain through the speakers), low 13mA supply current, and a 10A shutdown mode. A MUTE function allows the outputs to be quickly enabled or disabled.
A headphone sense input of MAX9762 detects the presence of a headphone jack and automatically configures the amplifiers for either speaker or headphone mode. In speaker mode, the amplifiers can deliver up to 3W of continuous average power into a 3 load. In headphone mode, the amplifier can deliver up to 200mW of continuous average power into a 16 load. The gain of the amplifiers MAX9762 is externally set, allowing maximum flexibility in optimizing output levels for a given load. The amplifiers also feature a 2:1 input multiplexer, allowing multiple audio sources to be selected. The multiplexer MAX9762 can also be used to compensate for limitations in the frequency response of the loud speakers by selecting an external equalizer network. The various functions are controlled by either an I2C-compatible or simple parallel control interface.
The MAX9762 are available in either a thermally efficient 28-pin thin QFN package (5mm *5mm * 0.8mm) or a TSSOP-EP package. All devices have thermal overload protection (OVP) and are specified over the extended -40°C to +85°C temperature range.
MAX9762 Data Sheet
