AVL6261A

Overview

The AVL6261A is a highly integrated DVB-S2X/S2/S channel receiver IC designed for satellite applications. It converts baseband IQ signals from tuners into transport or generic streams, supporting all normative MODCODs and both normal (64800 bits) and short (16200 bits) FECFRAMEs. Symbol rates range from 1-60 MSps for QPSK/8PSK/APSK up to 34 MSps for 64APSK. The device features dual 8-bit ADCs with DC removers and IQ imbalance compensation, alongside flexible AGC and GPIO outputs. It operates on a 1.2V core and 3.3V I/O supply within a –10°C to +85°C temperature range.

Feature Summary

• Supports DVB-S2X, S2, and S standards with comprehensive MODCOD coverage and adaptive coding modes.
• Integrates dual high-performance analog-to-digital converters with digital correction circuits for signal integrity.
• Provides versatile output interfaces including parallel and serial MPEG transport stream capabilities.
• Includes built-in DiSEqC 2.0 control and I2C repeaters for simplified tuner and LNB management.

Applications

• Satellite broadcast receivers
• Interactive VSAT systems
• Digital satellite set-top boxes

Procurement Notes

Verify the specific package variant against the manufacturer's datasheet before ordering. Confirm that the host system provides the required 1.2V core voltage and 3.3V I/O supply rails. Ensure the design accommodates the ultra-compact 48-pin QFN 6x6 mm form factor and supports the necessary reference clock frequencies between 16 and 30 MHz for proper operation.

Selection Notes

Select this component for designs requiring full compliance with ETSI EN 302-307-1 and EN 300-421 standards. It is suitable for applications needing support for both long and short FEC frames across multiple modulation schemes. The pin-to-pin compatibility with other Availink demodulators allows for potential future migration within the same product family without major PCB redesigns.

Part Context

Availink specializes in semiconductor solutions for digital television and multimedia. The AVL6261A belongs to their family of multi-standard demodulators, offering a compact alternative to discrete solutions. By integrating the demodulation logic, ADCs, and control interfaces into a single chip, it reduces board space and simplifies the overall system architecture for satellite communication equipment.

Replacement Considerations

Check for pin-to-pin compatible models within the Availink DTMB and multi-standards demodulator family. Verify if any updated revisions exist that maintain the same electrical characteristics while potentially offering improved performance or availability.

FAQ

Does the AVL6261A support short FECFRAMEs?

Yes, the device supports both normal (64800 bits) and short (16200 bits) FECFRAME configurations.

What is the maximum symbol rate for 64APSK modulation?

The maximum symbol rate for 64APSK modulation is 34 MSps.