مدار مجتمع (آی سی) آی‌سی صوتی ویژه

Product Attributes

Introduction

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

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 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.

Features

• 0.5 A peak output (Si8241)
• 4.0 A peak output (Si8244)
• PWM input High-precision linear programmable dead-time generator
• 0.4 ns to 1 µs
• High latchup immunity > 100 mA/ns
• Up to 1500 Vrms output-output isolation, supply voltage of ±750 V

Applications

• Class D audio amplifiers