BL6211
1.25 Watt Fully Differential Audio Power Amplifier
With Internal Feedback Resistors
Features
Fully differential amplifier
Improved PSRR at 217Hz(VDD>3.0V)
Power output at 5.0V & 1% THD
Power output at 3.6V & 1% THD
Ultra low shutdown current
86dB (typ)
1.25W (typ)
0.6W (typ)
0.01μA (typ)
Improved pop & click circuitry eliminates noises during turn-on and turn-off transitions
Thermal overload protection circuitry
No output coupling capacitors, bootstrap capacitors required
Unity-gain stable
External gain configuration capability
Available in space-saving package: 9-bump micro SMD and 8-pin MSOP8
General description
The BL6211 is a fully differential audio power amplifier designed for portable communication device
applications. It is capable of delivering 1.25 watt of continuous average power to an 8 BTL load with
less than 1% distortion (THD+N) from a 5V battery voltage. It operates from 2.2 to 5.5V.
Features like 86dB PSRR at 217Hz, improved RF-rectification immunity, the space-saving 8-pin
MSOP8 and 9-bump micro SMD package, the advanced pop & click circuitry, a minimal count of
external components and low-power shutdown mode make BL6211 ideal for wireless handsets.
The BL6211 is unity-gain stable, and the gain can be configured by external input resistors and internal
feedback resistors.
Applications
Wireless handsets
Portable audio devices
PDAs, Handheld computers
http://www.belling.com.cn
-1-
8/14/2006
Wrote by 2006
Total
10 Pages
BELLING [ SHANGHAI BELLING CO., LTD. ]
