TDA18254AHN/C1,518

Video Processing Overview

The TDA18254AHN/C1,518 is a silicon tuner designed for worldwide cable and terrestrial digital Set Top Boxes. It operates on a single 3.3 V supply voltage with an RF frequency coverage up to 1 GHz. The device features a flexible low IF output ranging from 3 MHz to 7.5 MHz. Key electrical parameters include a typical noise figure of 3.8 dB below 862 MHz and 4.5 dB at or above 862 MHz. Phase jitter is specified between 0.4 and 0.6 degrees. Image rejection is rated at -6 dB. Power dissipation is typically 0.740 W.

Video Processing Feature Summary

• Integrated Zero Power Loop-Through (ZPLT) functionality
• Fully integrated oscillators and I2C-bus interface compatible with 3.3 V microcontrollers
• Strong immunity to wireless interferers including WLAN, GSM, and LTE
• Enhanced ESD protection capability of 8 kV HBM on RF_IN and ZPLT pins

Video Processing Applications

• Digital Cable Set Top Boxes
• Terrestrial Digital Set Top Boxes
• Dual tuner applications utilizing Slave Tuner Output

Video Processing Procurement Notes

Verify the specific ordering suffix against official NXP documentation to confirm package type and environmental compliance status. Ensure compatibility with system requirements regarding I2C bus levels and reference clock frequencies before procurement. Confirm product availability and current datasheet revision directly with the manufacturer.

Video Processing Selection Notes

Select this component for designs requiring reduced external components such as SAW filters and LNAs. Consider its suitability for applications needing high linearity and low power consumption. Evaluate the flexible low IF output range for matching with various demodulators. Verify that the operating temperature range meets the application's environmental constraints.

Video Processing Part Context

This device belongs to the TDA18250A family of cable silicon tuners manufactured by NXP Semiconductors. It is engineered to meet current and future digital TV reception standards while minimizing system cost through internal integration of critical RF functions.

Video Processing Replacement Considerations

Consult official NXP documentation for confirmed substitute part numbers. Verify functional equivalence and pin compatibility before considering alternatives.