The Si2107/08/09/10 are a family of pin-compatible, complete front-end solutions for DSS and DVB-S digital satellite reception. The IC family incorporates a tuner, demodulator, and LNB controller into a single device resulting in significantly reduced board space and external component count. The device supports symbol rates of 1 to 45 MBaud over a 950 to 2150 MHz range. A full suite of features including automatic acquisition, fade recovery, blind scanning, performance monitoring, and DiSEqC Level 2.2 compliant signaling are supported. The Si2108/ 10 further add short circuit protection, overcurrent protection, and a step-up dc-dc controller to implement a low-cost LNB supply solution. Si2109/10 versions include a hardware channel scan accelerator for fast "blindscan". The Si2107/08/ 09/10 family features new channel detection and acquisition technology: QuickLock for Si2107/08/09/10 and QuickScan for Si2109/10. QuickLock achieves fast channel acquisition and QuickScan, fast channel detection. An I2C bus interface is used to configure and monitor all internal parameters.