21ic STMicroelectronics' FDA2100LV automotive power amplifier features an all-digital architecture, including digital inputs and a powerful diagnostic processor that helps minimize noise, saves up to 50% on material costs, and gives car audio consoles and amplifiers The energy-efficient advantages of Class D amplifiers.
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The FDA2100LV's all-digital amplifier architecture features low-emission, floating-point digital core, anti-transconductance circuitry, and slope control to minimize tuner interference, improve handset RFI protection, and simplify EN 55025 [1], ISO 11452-2 (2004) [2] and other automotive electromagnetic compatibility standards compliance issues. In addition, ST's proprietary output filter-based feedback loop patented design optimizes system performance such as electromagnetic interference (EMI), harmonic distortion (THD), and frequency response. This means high sound quality even with low-cost external components. The same design can drive four different speaker impedances, for example, 8Ω, 4Ω, 2Ω or 1Ω.
Like the 4x50W FDA450LV and the 4x135W FDA4100LV, the FDA2100LV is a family of ST's all-digital power amplifiers that excite the world's drivers, giving designers more flexibility. The new family of products can be used to develop 2, 4 or 6 channel configurations, or to combine multiple outputs into a single high power output of only 1 Ω. As the market's first digital input family of automotive Class D power amplifiers, these digital amplifiers can be connected to digital audio processors without noise, eliminating the need for digital-to-analog converters (DACs) or input filters.
Other important features include full digital I2C control and reliable and advanced digital diagnostics with up to 110dB signal-to-noise ratio and 108dB dynamic range. FDA2100LV and FDA4100LV integrate unique boost drivers, durable silicon-on-insulator (SOI, Silicon- on-Insulator) technology and built-in fault protection. The start-stop compatible system ensures that music playback is not distorted or interrupted even when the engine starts to cause a sudden drop in battery voltage, making it suitable for a variety of conventional, hybrid or pure electric vehicles.
The FDA2100LV in the TQFP64 package is available now.
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