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NCP4894 데이터시트(PDF) 1 Page - ON Semiconductor |
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NCP4894 데이터시트(HTML) 1 Page - ON Semiconductor |
1 / 18 page © Semiconductor Components Industries, LLC, 2005 November, 2005 − Rev. 8 1 Publication Order Number: NCP4894/D NCP4894 1.8 Watt Differential Audio Power Amplifier with Selectable Shutdown The NCP4894 is a differential audio power amplifier designed for portable communication device applications. This feature and the excellent audio characteristics of the NCP4894 are a guarantee of a high quality sound, for example, in mobile phones applications. With a 10% THD+N value the NCP4894 is capable of delivering 1.8 W of continuous average power to an 8.0 W load from a 5.5 V power supply. With the same load conditions and a 5.0 V battery voltage, it ensures 1.0 W to be delivered with less than 0.01% distortion. The NCP4894 provides high quality audio while requiring few external components and minimal power consumption. It features a low−power consumption shutdown mode. To be flexible, shutdown may be enabled by either a logic high or low depending on the voltage applied on the SD MODE pin. The NCP4894 contains circuitry to prevent from “pop and click” noise that would otherwise occur during turn−on and turn−off transitions. For maximum flexibility, the NCP4894 provides an externally controlled gain (with resistors), as well as an externally controlled turn−on time (with bypass capacitor). Due to its excellent PSRR, it can be directly connected to the battery, saving the use of an LDO. This device is available in 9−Pin Flip−Chip, Micro−10 and DFN10 3x3 mm packages. Features • Differential Amplification • Shutdown High or Low Selectivity • 1.0 W to an 8.0 W Load from a 5.0 V Power Supply • Superior PSRR: Direct Connection to the Battery • “Pop and Click” Noise Protection Circuit • Ultra Low Current Shutdown Mode • 2.2 V−5.5 V Operation • External Gain Configuration Capability • External Turn−on Configuration Capability • Thermal Overload Protection Circuitry • Pb−Free Packages are Available Typical Applications • Portable Electronic Devices • PDAs • Mobile Phones 9−PIN FLIP−CHIP FC SUFFIX CASE 499AL http://onsemi.com xxxx = Specific Device Code A = Assembly Location L = Wafer Lot Y = Year W, WW = Work Week G = Pb−Free Package (Note: Microdot may be in either location) MARKING DIAGRAMS Micro−10 DM SUFFIX CASE 846B 1 8 1 See detailed ordering and shipping information in the package dimensions section on page 14 of this data sheet. ORDERING INFORMATION xxx G AYWW A1 A3 C1 xxxx AYW G G DFN10 MN SUFFIX CASE 485C xxx ALYW G G 1 1 |
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