MOSA
MS6894
Mono 1.1W Fully Differential Power Amplifier with Shutdown Selection
Mono 1.1W, Fully Differential Input
Excellent PSRR, Low Voltage Operation
Selectable Shutdown Logic Level
FEATURES
•PSRR
at 217Hz, 80dB at 5V
•Operation
range: 2.5V~5.5V
•Shutdown
Current 0.1uA at 5V
•Output
power, THD+N=1%
R
L
=8 , 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:
LM4894
DESCRIPTION
The MS6894 is a fully differential power amplifier that can drive 1.1W of continuous average power into a mono 8
bridged-tied load (BTL). Operation with 2.5V supply, it can drive 200mw into a mono 8 . 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 MS6894 is unity-gain
stable and can be configured by external gain-setting resistors.
The MS6894 has good feature for portable equipment, these features include the fully differential input, low voltage
operation, micropower consumption shutdown mode, enhance thermal pad and small package MSOP10, make the
MS6894 ideally suited for use in portable electronic equipments.
BLOCK DIAGRAM
V
DD
7
-IN
2
-
+
10
Vo2
SD
SD Mode
BP
Shutdown control
SD Mode
0
0
1
1
SD
0
1
0
1
Status
Shutdown
On
On
Shutdown
1
3
Bias
Common
mode
5
-
+IN
4
6
Vo1
+
7
GND
REV 1.0
1
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MOSA [ MOSA ELECTRONICS ]
