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NCP2820 データシート(PDF) 1 Page - ON Semiconductor |
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NCP2820 データシート(HTML) 1 Page - ON Semiconductor |
1 / 22 page © Semiconductor Components Industries, LLC, 2006 November, 2006 − Rev. 5 1 Publication Order Number: NCP2820/D NCP2820 2.65 W Filterless Class−D Audio Power Amplifier The NCP2820 is a cost−effective mono Class−D audio power amplifier capable of delivering 2.65 W of continuous average power to 4.0 W from a 5.0 V supply in a Bridge Tied Load (BTL) configuration. Under the same conditions, the output power stage can provide 1.4 W to a 8.0 W BTL load with less than 1% THD+N. For cellular handsets or PDAs it offers space and cost savings because no output filter is required when using inductive tranducers. With more than 90% efficiency and very low shutdown current, it increases the lifetime of your battery and drastically lowers the junction temperature. The NCP2820 processes analog inputs with a pulse width modulation technique that lowers output noise and THD when compared to a conventional sigma−delta modulator. The device allows independent gain while summing signals from various audio sources. Thus, in cellular handsets, the earpiece, the loudspeaker and even the melody ringer can be driven with a single NCP2820. Due to its low 42 mV noise floor, A−weighted, a clean listening is guaranteed no matter the load sensitivity. Features • Optimized PWM Output Stage: Filterless Capability • Efficiency up to 90% Low 2.5 mA Typical Quiescent Current • Large Output Power Capability: 1.4 W with 8.0 W Load (CSP) and THD + N < 1% • Wide Supply Voltage Range: 2.5−5.5 V Operating Voltage • High Performance, THD+N of 0.03% @ Vp = 5.0 V, RL = 8.0 W, Pout = 100 mW • Excellent PSRR (−65 dB): No Need for Voltage Regulation • Surface Mounted Package 9−Pin Flip−Chip CSPand UDFN8 • Fully Differential Design. Eliminates Two Input Coupling Capacitors • Very Fast Turn On/Off Times with Advanced Rising and Falling Gain Technique • External Gain Configuration Capability • Internally Generated 250 kHz Switching Frequency • Short Circuit Protection Circuitry • “Pop and Click” Noise Protection Circuitry • Pb−Free Packages are Available Applications • Cellular Phone • Portable Electronic Devices • PDAs and Smart Phones • Portable Computer http://onsemi.com 9−PIN FLIP−CHIP CSP FC SUFFIX CASE 499AL 1 MARKING DIAGRAMS A = Assembly Location Y = Year WW = Work Week M = Date Code G = Pb−Free Package OUTM OUTP Cs GND Ri SD INP INM VP Input from Microcontroller Audio Input from DAC 3.7 mm 1.6 mm Cs Ri Ri Ri See detailed ordering and shipping information on page 20 of this data sheet. ORDERING INFORMATION 8 PIN UDFN 2x2.2 MU SUFFIX CASE 506AV ZB MG 1 A1 A3 C1 1 1 8 |
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同様の説明 - NCP2820 |
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