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.
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.
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 packages. Both devices
have thermal-overload and output short-circuit protection,
and are specified over the extended -40°C to +85°C
temperature range.
Key Features
Applications/Uses
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 Protection
Selectable Gain Settings
Analog Volume Control (MAX9750)
BEEP Input with Glitch Filter (MAX9750)
2:1 Stereo Input MUX (MAX9751)
±8kV ESD-Protected Headphone Driver Outputs
Available in Space-Saving, Thermally Efficient Packages
Notes: *This pricing is BUDGETARY, for comparing similar parts. Prices are in
U.S. dollars and subject to change. Quantity pricing may vary
substantially and international prices may differ due to local
duties, taxes, fees, and exchange rates. For volume-specific prices
and delivery, please see the price and availability page
or contact an authorized distributor.
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