A2211
AiT Semiconductor Inc.
www.ait-ic.com
CLASS AB 1.25 W DIFFERENTIAL AUDIO POWER AMPLIFIER
WITH INTERNAL FEEDBACK CIRCUIT
DESCRIPTION
FEATURES
The A2211 is a fully differential audio power amplifier
Fully Differential Amplifier
designed
for
portable
communication
device
Improved PSRR at 217Hz(VDD>3.0V):
86dB(Typ.)
applications.
Power Output at 5.0V & 1% THD:
1.25W(Typ.)
The A2211 is capable of delivering 1.25W of
continuous average power to an 8Ω BTL load with less
than 1% distortion (THD+N) from a 5V battery voltage.
And operates from 2.2V to 5.5V.
Power Output at 3.6V & 1% THD: 0.6W(Typ.)
Ultra Low Shutdown Current: 0.01uA(Typ.)
Improved Pop & Click Circuitry Eliminates
Noise During Turn-on and Turn-off
Transitions
A2211 features 86dB PSRR at 217Hz, improved
RF-rectification immunity, the advanced pop & click
circuitry, a minimal count of external components and
low-power shutdown mode make A2211 idea for
wireless handsets.
Thermal Overload Protection Circuitry
No Output Coupling Capacitors, Bootstrap
Capacitors Required
Unity-Gain Stable
The A2211 is unity-gain stable, and the gain can be
configured by external input resistors and internal
feedback resistors.
External Gain Configuration Capability
Available in MSOP8 Package
APPLICATION
The A2211 is available in MSOP8 package
TYPICAL APPLICATION
GPS, Wireless Handsets
Portable Audio Devices
PDA, Handheld Computer
RF Audio Application
ORDERING INFORMATION
Package Type
MSOP8
Part Number
A2211MS8R
MS8
A2211MS8VR
V: Halogen free Package
R: Tape & Reel
Note
AiT provides all RoHS products
Suffix ꢀVꢁ means Halogen free Package
REV1.2
- AUG 2006 RELEASED, OCT 2008 UPDATED -
- 1 -