AVL6221C

Overview

The AVL6221C is a DVB-S2/S demodulator featuring a dual 8-bit ADC and digital front-end. It supports DVB-S2 MODCODs with symbol rates of QPSK/8PSK up to 60 Msps, 16APSK up to 58 Msps, and 32APSK up to 55 Msps. DVB-S operation covers symbol rates from 1-54 Msps with code rates 1/2 through 7/8. The device handles normal FEC frames (64800 bits) and CCM modulation with roll-off factors from 0.05 to 0.35. It includes fast blind scan, DiSEqC 2.x support, and I2C repeater functionality. Output interfaces provide parallel or serial MPEG transport streams. The component conforms to ETSI EN 302-307-1 V1.4.1 Part I and ETSI EN 300-421 V1.1.2 standards.

Feature Summary

• Supports DVB-S2 and DVB-S broadcast service profiles with flexible modulation coding and symbol rate ranges.
• Integrates dual 8-bit ADCs, digital front-end, and carrier/symbol timing recovery for signal processing.
• Provides configurable MPEG transport stream outputs in parallel or serial formats with tri-state interface support.
• Includes comprehensive tuner control features such as DiSEqC 2.x, flexible AGC, GPIO outputs, and an I2C repeater.

Applications

• Broadcast services application
• Satellite zero IF input reception
• Tuner and LNB control systems

Procurement Notes

Verify the specific package type and pin configuration against the manufacturer's official datasheet before integration. Confirm that the required DVB-S2 MODCODs and FEC frame lengths align with your system design. Ensure compatibility with the I2C bus architecture, particularly regarding the I2C repeater function for noise reduction. Check that the host processor can handle the selected parallel or serial MPEG output interface modes.

Selection Notes

Select this component for applications requiring integrated DVB-S2 and DVB-S demodulation within an ultra-compact form factor. The dual 8-bit ADC architecture offers high-performance signal acquisition. Consider the pin-to-pin compatibility with other Availink demodulators if designing for multi-standard flexibility. Evaluate the need for specific roll-off factors and FEC frame types to ensure compliance with target broadcast standards.

Part Context

The AVL6221C belongs to the family of satellite demodulators designed for digital television reception. It integrates baseband processing functions including LDPC & BCH decoding and Viterbi/RS decoding. The device is engineered for broadcast environments, supporting advanced modulation schemes like 16APSK and 32APSK alongside legacy DVB-S standards.

Replacement Considerations

The datasheet notes pin-to-pin compatibility with Availink’s DTMB and multi-standards demodulators. Verify functional equivalence and standard support when substituting with other Availink models.