AVL6812TA

Overview

The Availink AVL6812TA is a single-chip demodulator supporting DVB-S, DVB-S2, ISDB-T, and J.83 A/B/C cable standards. It accepts zero IF for satellite and low/high IF for terrestrial/cable inputs. The device handles QPSK and 8PSK modulation with symbol rates up to 55 Msps and supports code rates from 1/2 to 9/10. For ISDB-T, it covers modes 1-3 with DQPSK/QPSK/16QAM/64QAM. It features blind scan capabilities, automatic mode detection, and outputs MPEG data in a 48-pin 6x6 mm QFN package.

Feature Summary

• Supports DVB-S/S2 satellite standards with fast automatic blind scanning of symbol rates and carrier frequencies.
• Handles ISDB-T terrestrial broadcasting across all three modes with automatic spectral inversion detection.
• Provides full compliance with ITU-T J.83 Annex A, B, and C cable standards using sophisticated equalization.
• Offers flexible architecture allowing performance upgrades via firmware updates.

Applications

• Satellite set-top boxes requiring DVB-S and DVB-S2 demodulation
• Digital television receivers supporting ISDB-T terrestrial signals
• Cable TV head-end equipment utilizing J.83 A/B/C standards

Procurement Notes

Verify the specific suffix TA against the manufacturer's official documentation to confirm pinout compatibility and temperature range specifications. Ensure the design-in process accounts for the required external components for the zero IF or high IF input configurations as detailed in the datasheet schematics.

Selection Notes

Select this component when a single chip must handle multiple broadcast standards including satellite, terrestrial, and cable. It is suitable for designs requiring firmware-upgradable performance and support for complex modulation schemes like 8PSK and 64QAM within a compact surface-mount package.

Part Context

This part belongs to Availink's family of digital video demodulators designed for multi-standard reception. It complements other chips like the AVL6762 and AVL6862 by adding specific support for ISDB-T and J.83 cable standards alongside DVB-S/S2 capabilities.

Replacement Considerations

Check for pin-to-pin compatible alternatives such as the AVL6762, AVL6862, or AVL6882 if additional standard support like DTMB or T2 is required. Verify functional equivalence for specific application requirements before substitution.