MS6853 Datasheet, PDF (1/12 Pages) MOSA ELECTRONICS – Mono 1.9W / Stereo 300mW Power Amplifier Low Voltage Operation, Pop Noise Free

MOSA
MS6853
Mono 1.9W / Stereo 300mW Power Amplifier
Mono 1.9W / Stereo 300mW Power Amplifier
Low Voltage Operation, Pop Noise Free
FEATURES
‧Operation range: 2.7V~5.5V
‧Shutdown Current 18uA at 5V
‧Output power, THD+N=1%
BTL, R_L=3Ω, 2.1W at 5V
BTL, R_L=4Ω, 1.9W at 5V, 0.83W at 3.3V, 500mW at 2.7V
BTL, R_L=8Ω, 1.2W at 5V, 0.54W at 3.3V, 350mW at 2.7V
SE, R_L=8Ω, 300mW at 5V, 125mW at 3.3V, 85mW at 2.7V
SE, R_L=32Ω, 90mW at 5V, 43mW at 3.3V, 25mW at 2.7V
‧Headphone sense
‧Unity-gain stable, pop noise free
‧Space-saving MSOP10 (enhance thermal pad), TSSOP14
APPLICATIONS
‧Desktop computer’s sound card
‧Portable audio devices
‧PDA’s
‧Handheld games
‧Communication headsets
‧Cross-reference:
SSM2250, LM4853
DESCRIPTION
The MS6853 is a low distortion power amplifier that can drive a set of 1.9W of continuous average power into a mono
4Ω bridged-tied load (BTL) or 2 * 90mW into stereo 32Ω single ended (SE) loads headphone. It can automatically
switch between mono BTL and stereo SE modes utilizing a headphone sense pin. The BTL configuration eliminates
the need for external coupling capacitors on the output in most applications. The unity gain stable MS6853’s gain is set
by external gain-setting resistors.
The MS6853 has good feature for portable equipment, these features include the low voltage operation, micropower
consumption shutdown mode, enhance thermal pad and small package MSOP10, TSSOP14, make the MS6853 ideally
suited for use in portable digital audio equipments.
BLOCK DIAGRAM
L-IN
BYPASS
R-IN
V_DD
GND
V_DD
-
A1
+
-
A2
+
V_DD
-
A3
+
Mono / Stereo Mode
Switching Circuitry
Click/Pop
Reduction
Bias
REV 1.1
1
L-OUT / BTL OUT-
BTL OUT+
R-OUT
HP-IN
SHUTDOWN
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