BL6290 Datasheet, PDF (1/11 Pages) SHANGHAI BELLING CO., LTD. – External gain configuration capability

1.25 Watt Audio Power Amplifier
BL6290
Features
Improved PSRR at 217 Hz & 1 KHz
64 dB
Power output at 5.0V, 1% THD+N, 8Ω 1.25 W (typ.)
Power output at 3.0V, 1% THD+N, 8Ω 450 mW (typ.)
Ultra low shutdown current
0.1 uA (typ.)
2.2V – 5.5V operation
Improved circuitry eliminates pop-click noise during turn-on and turn-off transitions
No output coupling capacitors, snubber networks or bootstrap capacitors required
Unity-gain stable
External gain configuration capability
Available in space-saving packages: MSOP8,SOP8
General Description
The BL6290 is a Class-AB audio power amplifier designed for mobile phones and other portable
communication devices. It is capable of delivering 1.25 watts of continuous average power to an
8Ω BTL load with less than 1% distortion (THD+N) from a 5V_DC power supply.
The BL6290 was designed specifically to provide high quality output power with a minimal
amount of external components. It does not require output coupling capacitors or bootstrap
capacitors. And with ultra low shutdown current, the BL6290 is ideally suited for mobile phone
and other low voltage applications where minimal power consumption is a primary requirement.
With special pop-click eliminating circuit, the BL6290 provides perfect pop-click characteristic
during turn-on and turn-off transitions.
The BL6290 is unity-gain stable and can be configured by external gain-setting resistors.
Applications
Wireless handsets
Portable electronic devices
PDAs, Handheld computers
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Total 11 Pages