MOSA
MS6901
Mono 1.1W Power Amplifier with Shutdown Selection
Mono 1.1W Power Amplifier
Selectable Shutdown Logic Level
Low Voltage Operation
FEATURES
‧Operation
range: 2.5V ~ 6.5V
‧Shutdown
Current 0.1uA at 5V
‧PSRR
at 217Hz, 60dB at 5V
‧Output
power, THD+N=1%
R
L
=8Ω, 1.1W at 5V, 0.4W at 3.3V, 200mW at 2.5V
‧Unity-gain
stable
‧Space-saving
MSOP10, enhance thermal pad
APPLICATIONS
‧Portable
electronic devices
‧PDAs
‧Communication
headsets
‧Cross-reference:
LM4901
DESCRIPTION
The MS6901 is a low distortion power amplifier that can drive 1.1W of continuous average power into a mono 8Ω
bridged-tied load (BTL). Operation with 2.5V supply, it can drive 200mw into a mono 8Ω. The shutdown may be
enabled by either logic high or logic low that depending on shutdown mode selection. The BTL configuration
eliminates the need for external coupling capacitors on the output in most applications. The MS6901 is unity-gain
stable and can be configured by external gain-setting resistors.
The MS6901 has good feature for portable equipment, these features include the low voltage operation, micropower
consumption shutdown mode, enhance thermal pad and small package MSOP10, make the MS6901 ideally suited for
use in portable electronic equipments.
BLOCK DIAGRAM
-IN
+IN
5
4
-
+
A1
-
6
Vo1
-
BP
SD
SD Mode
V
DD
GND
2
1
3
8
7, 9
+
Bias
control
A2
+
10
Vo2
-
REV 1
1/9
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MOSA [ MOSA ELECTRONICS ]
