The ZLNB100N8 is a low noise block downconverter (LNB) control and interface IC designed by Zetex Semiconductors (now part of Diodes Incorporated). It provides the necessary control signals and interfaces for powering and controlling an LNB in satellite receiver systems.

Applications

• Satellite receiver systems
• Set-top boxes (STBs)
• Satellite dish controllers
• Direct broadcast satellite (DBS) systems

Features

• LNB power supply control: Provides regulated voltage and current to the LNB.
• 22kHz tone generation: Generates the 22kHz tone signal for LNB band switching.
• DiSEqC 1.x support: Supports DiSEqC (Digital Satellite Equipment Control) protocol for LNB control and selection.
• Over-current protection: Protects the LNB and the IC from over-current conditions.
• Short-circuit protection: Protects the LNB and the IC from short-circuit conditions.
• Over-temperature protection: Protects the IC from overheating.
• Low power consumption: Minimizes power consumption in standby mode.

Benefits

• Simplified LNB control: Integrates all necessary functions for controlling an LNB in a single IC.
• Improved system reliability: Built-in protection features protect the LNB and the IC from damage.
• Reduced component count: Minimizes the number of external components required.
• Lower power consumption: Extends battery life in portable satellite receiver systems.

Technical Specifications

• Supply Voltage: Typically 8V to 18V
• LNB Supply Voltage: Adjustable, typically 13V/18V
• 22kHz Tone Frequency: 22kHz ± 4kHz
• DiSEqC Protocol Support: DiSEqC 1.x
• Over-Current Protection Threshold: See datasheet for specific value
• Operating Temperature Range: -40°C to +85°C
• Package: Typically a small surface mount package such as SOIC or TSSOP

Refer to the official Diodes Incorporated (formerly Zetex Semiconductors) datasheet for the ZLNB100N8 for precise specifications, application circuit examples, and operating conditions.