TDA18252HN/C1,557

Video Processing Overview

The TDA18252HN is a third-generation fully integrated silicon tuner designed for digital cable set-top box applications. It supports frequency coverage up to 1002 MHz with a typical noise figure of 7 dB and power dissipation of 800 mW. The device operates on a single 3.3 V supply and features an integrated analog loop-through function. It includes input signal strength indicators and die temperature sensors accessible via the I2C-bus, enabling efficient system integration.

Video Processing Feature Summary

• Fully integrated IF selectivity eliminates the need for external SAW filters
• Integrated oscillators require no external components
• On-chip analog loop-through capability
• Supports multiple world standards including DVB-C, SCTE-40, J-QAM, and NORDIG

Video Processing Applications

• DVB-C digital cable set-top boxes
• Digital cable set-top boxes in Asian markets such as China and India
• Single tuner receiver configurations
• DVR configurations

Video Processing Procurement Notes

Verify that the specific part number matches the required package type and voltage specifications. Confirm compatibility with existing reference designs like OM3853/C1 or OM3865/C1 if replacing conventional tuners. Ensure the design supports the single 3.3 V supply requirement and utilizes the I2C interface for control functions.

Video Processing Selection Notes

Select this component when minimizing bill-of-materials cost is critical by removing discrete RF and IF filters. It is suitable for designs requiring low power consumption under 800 mW. Choose this tuner for systems needing analog loop-through functionality and support for diverse regional digital cable standards.

Video Processing Part Context

This silicon tuner belongs to NXP's third-generation family of integrated tuners. It is often paired with the TDA10024HN QAM demodulator in front-end reference designs. The device simplifies system architecture by integrating tuning and filtering functions into a single chip, reducing PCB footprint.

Video Processing Replacement Considerations

The OM3865/C1 reference design indicates pin-to-pin compatibility with conventional can tuners used in the Chinese market.