BL6203ITLX Datasheet, PDF (1/17 Pages) SHANGHAI BELLING CO., LTD. – Fully differential amplifier

BL6203
1.25 Watt Fully Differential Audio Power Amplifier
1 FEATURES
z Fully differential amplifier
z Improved PSRR at 217Hz (VDD>3.0V)
90dB (typ)
z Power output at 5.0V & 1% THD
1.25W (typ)
z Power output at 3.6V & 1% THD
0.6W (typ)
z Ultra low shutdown current
0.01µA (typ)
z Improved pop & click circuitry eliminates noises during turn-on and turn-off transitions
z Thermal overload protection circuitry
z No output coupling capacitors, bootstrap capacitors required
z Unity-gain stable
z External gain configuration capability
z Available in space-saving package: 8-bump micro SMD
2 GENERAL DESCRIPTION
The BL6203 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 8Ω BTL load with
less than 1% distortion (THD+N) from a 5V battery voltage. It operates from 2.2 to 5.5V.
Features like 90dB PSRR at 217Hz, improved RF-rectification immunity, the space-saving 8-bump micro
SMD package, the advanced pop & click circuitry, a minimal count of external components and
low-power shutdown mode make BL6203 ideal for wireless handsets.
The BL6203 is unity-gain stable, and the gain can be configured by external resistors.
3 APPLICATIONS
z Wireless handsets
z Portable audio devices
z PDAs, Handheld computers
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