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STEVAL-CBL014V1：Dual LNB supply and control IC DiSeqC 1.x compliant based on the LNBH26L

This product evaluation board implements a DC-DC converter based on the LNBH26L device used to power LNB inside dish antennas which receive satellite TV signals. The LNBH26L is an integrated solution for supplying/interfacing satellite LNB modules in accordance with international standards, offering a complete solution for dual-tuner satellite receivers and good performance at low cost using few external components. The LNBH26L evaluation board includes an I²C bus interface and the internal 22 kHz tone generator (factory trimmed) is controlled by the DSQIN pin (TTL compatible), permitting immediate DiSEqC™ data encoding. A fully integrated step-up DC-DC converter allows operation with a single input voltage supply source ranging from 8 V to 16 V.

Key Features

• Complete interface between LNB and I²C bus
• Built-in DC-DC converter for single 12 V supply operation and high efficiency (typ. 93% @ 0.5 A)
• Selectable output current limit using an external resistor
• Compliant with main satellite receiver output voltage specifications (8 programmable levels)
• Accurate built-in 22 kHz tone generator suits widely-accepted standards
• 22 kHz tone waveform integrity guaranteed also at no load
• Low-drop post regulator and high-efficiency step-up PWM with integrated power N-MOS allowing low power losses
• Overload and overtemperature internal protection with I²C diagnostic bits
• LNB short-circuit dynamic protection
• RoHS compliant

Product Specifications

Board Manufacturing Specifications

Bill of Materials

Schematic Packs

License Agreement

Evaluation Tool Software

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Quality & Reliability