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LR4890 Folha de dados(PDF) 1 Page - Leshan Radio Company |
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LR4890 Folha de dados(HTML) 1 Page - Leshan Radio Company |
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1 / 10 page  INTRODUCTION The LR4890 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 ， SOP8 and DIP8 package, the advanced pop & click circuitry, a minimal count of external components and low-power shutdown mode make LR4890 ideal for wireless handsets. The LR4890 is unity-gain stable, and the gain can be configured by external input resistors and external feedback resistors. FEATURES Fully differential amplifier Improved PSRR at 217Hz(VDD>3.0V) 86dB (Typ.) Power output at 5.0V & 1% THD 1.25W (Typ.) Power output at 3.6V & 1% THD 0.5W (Typ.) Ultra low shutdown current 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 packages: 8-pin MSOP8,SOP8,DIP8 APPLICATIONS Wireless handsets Portable audio devices PDAs Notebook computer PIN DIAGRAM 1.25W Fully Differential Audio Power Amplifier with Internal Feedback Resistors LR4890 LESHAN RADIO COMPANY, LTD. 1/10 Ver0.3 |
Nº de peça semelhante - LR4890 |
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Descrição semelhante - LR4890 |
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