The MAX9708 mono/stereo, Class D audio power amplifier
delivers up to 2 x 21W into an 8Ω stereo mode and
1 x 42W into a 4Ω load in mono mode while offering up
to 87% efficiency. The MAX9708 provides Class AB
amplifier performance with the benefits of Class D efficiency,
eliminating the need for a bulky heatsink and
conserving power. The MAX9708 operates from a single
+10V to +18V supply, driving the load in a BTL configuration.
The MAX9708 offers two modulation schemes: a fixedfrequency
modulation (FFM) mode, and a spread-spectrum
modulation (SSM) mode that reduces
EMI-radiated emissions. The MAX9708 can be synchronized
to an external clock from 600kHz to 1.2MHz. A
synchronized output allows multiple units to be cascaded
in the system.
Features include fully differential inputs, comprehensive
click-and-pop suppression, and four selectable-gain settings
(22dB, 25dB, 29.5dB, and 36dB). A pin-programmable
thermal flag provides seven different thermal
warning thresholds. Short-circuit and thermal-overload
protection prevent the device from being damaged
during a fault condition.
The MAX9708 is available in 56-pin TQFN (8mm x 8mm
x 0.8mm) and 64-pin TQFP (10mm x 10mm x 1.4mm)
packages, and is specified over the extended
-40°C to +85°C temperature range.
* Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
Devices:
1-2 of 2
MAX9708
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Status
Package:
TYPE PINS FOOTPRINT
DRAWING CODE/VAR *
Temp
RoHS/Lead-Free? Materials Analysis
MAX9708ETN+TD
Active
TQFN;56 pin;65.6 mm²
Outline Drawing: 21-0135 (PDF)
Land Pattern: 90-0047 (PDF)
Use pkgcode/variation: T5688+3*
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