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Si8241CB-B-IS1 Datasheet(PDF) 1 Page - Silicon Laboratories |
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Si8241CB-B-IS1 Datasheet(HTML) 1 Page - Silicon Laboratories |
1 / 30 page Rev. 0.2 2/11 Copyright © 2011 by Silicon Laboratories Si824x This information applies to a product under development. Its characteristics and specifications are subject to change without notice. Si824x C LASS D A UDIO D RIVER WITH P RECISION D EAD-TIME G ENERATOR Features Applications Description The Si824x isolated driver family combines two isolated drivers in a single package. The Si8241/44 are high-side/low-side drivers specifically targeted at high-power (>30 W) audio applications. Versions with peak output currents of 0.5 A (Si8241) and 4.0 A (Si8244) are available. All drivers operate with a maximum supply voltage of 24 V. Based on Silicon Labs' proprietary isolation technology, the Si824x audio drivers incorporate input-to-output and output-to-output isolation, which enables level- translation of signals without additional external circuits as well as use of bipolar supply voltage up to ±750 V. The Si824x audio drivers feature an integrated dead- time generator that provides highly precise control for achieving optimal THD. These products also have overlap protection that safeguards against shoot- through current damage. The CMOS-based design also provides robust immunity from latch-up and high-voltage transients. The extremely low propagation delays enable faster modulation frequencies for an enhanced audio experience. The TTL level compatible inputs with >400 mV hysteresis are available in PWM input configuration; other options include UVLO levels of 8 V or 10 V. These products are available in narrow body SOIC packages. Functional Block Diagram 0.5 A peak output (Si8241) 4.0 A peak output (Si8244) PWM input High-precision linear programmable dead-time generator 0.4ns to 1µs High latchup immunity >100 V/ns Up to 1500 Vrms output-output isolation, supply voltage of ±750 V Input to output isolation for low noise (up to 2500 V) Up to 8 MHz operation Wide operating range –40 to +125 °C Transient immunity >45 kV/µs RoHS-compliant SOIC-16 narrow body Class D audio amplifiers GNDI VDDI PWM VDDA VOA GNDA VOB VDDB GNDB DISABLE DT UVLO Programmable Dead Time, Control Gating Si8241/44 Patents Pending Ordering Information: See page 25. Pin Assignments PWM NC VDDI GNDI DISABLE DT NC VDDI VDDA VOA GNDA NC VDDB VOB GNDB Si8241/44 SOIC-16 (Narrow) 1 2 3 4 5 6 7 8 9 12 11 10 13 14 15 16 NC |
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