Single Chip 8VSB/QAM Digital Demodulator

General Description

Trident introduces the DRX 3933J, world’s smallest 8VSB and QAM demodulator IC. The DRX 3933J demodulates standard and high-definition television signals according to ATSC-A/53, the North American digital television broadcast standard. It also demodulates QAM 64/256 signals as specified by ITU-T J.83 Annex B.

Providing unparalleled PCB real estate benefits, Trident offers the world’s smallest ATSC and QAM demodulator in a QFN48 package (7×7 mm). This represents an 80% reduction in size compared to any similar demodulator available today. The DRX 3933J may be used with highly integrated silicon tuners.

Based on market leading primeD^® technology, the DRX 3933J enables the final step into the digital future for a large variety of consumer electronics devices.

PrimeD is the field-proven “ghost-friendly” 8VSB demodulator IP from Trident which further improves performance under multipath rich environments and ensures reliable reception under severe signal conditions.

Designed with the complete system solution in mind, the DRX 3933J enables highly optimized adjacent channel performance by integrating a broadband input power detector. Additional features enable customers to utilize low-cost tuner options, further reducing the overall system cost.

The API-based software interface enables effortless implementation into any system. Compatibility with existing Trident ATSC receivers and other Trident demodulator products reduces engineering cost by maximizing the re use of existing software and product experience.

Block Diagram

Key Features

Main Features

• ATSC demodulator for 8VSB with excellent multipath performance, meeting:
  • ATSC Digital Television Standard A/53
  • ATSC recommended practices A/74
  • Brazil ensembles A, B, C, D, E
• OpenCable™ compliant digital cable demodulator supporting ITU-T J.83 Annex B (DOCSIS, OpenCable)
• Integrated microprocessor provides a high-level command interface to the host processor
• Low power consumption
• Support for low IF
• Selectable I²C addresses

Interfaces

• RF and IF gain control output
• Parallel or serial MPEG_TS output
• I²C interface
• CEA909-compliant smart antenna interface
• JTAG
• GPIO
• Broadband power detector input

Applications

• DCR TV
• Low-cost DTV
• DVD-R / PVR
• STB
• PC TV
• USB TV
• Tuner NIM

Family Members

Versions

Datasheet