TDA18271HD/C2,557

Video Processing Overview

The TDA18271HD/C2,557 is a silicon tuner IC designed for terrestrial analog and digital TV reception. It integrates the overall tuning function, including selectivity, and supports all worldwide analog and digital terrestrial standards. The device delivers a low IF signal to demodulators or channel decoders. Key electrical parameters include an RF frequency range of 45 MHz to 864 MHz on the slave tuner output pin, a typical tuner noise figure of 5.5 dB, and a phase noise of -89 dBc/Hz at 1 kHz and 10 kHz offsets. Power dissipation is typically 780 mW, with a maximum input voltage of 103 dBμV at 1 dB gain compression. Digital sensitivity for DVB-T (64 QAM 2/3; BER = 2x10^-4) is -82 dBm, while analog sensitivity is 8 dBμV for 50 dB video SNR weighted.

Video Processing Feature Summary

• Fully integrated RF tracking filters and IF selectivity eliminate the need for external SAW filters.
• Supports worldwide multistandard terrestrial reception for both analog and digital TV formats.
• Includes integrated loop-through and slave tuner outputs to facilitate straightforward multi-tuner configurations.
• Operates with fully integrated oscillators requiring no external components and features alignment-free operation.

Video Processing Applications

• Hybrid analog and digital TV applications for PC TV systems
• DVD-R recording devices
• Television sets

Video Processing Procurement Notes

Verify the specific ordering suffix /C2,557 against NXP documentation to confirm package details and RoHS compliance status. Ensure compatibility with the host system's I2C bus voltage levels, as the interface supports both 3.3 V and 5 V microcontrollers. Confirm that the design accommodates the required 16 MHz crystal reference and thermal management for the HLQFN64R package.

Video Processing Selection Notes

Select this component for designs requiring a compact silicon tuner solution that replaces conventional can tuners. It is suitable for applications needing easy dual-tuner configuration and drastic size reduction. Consider its single 3.3 V power supply requirement and low power consumption characteristics when designing the power architecture.

Video Processing Part Context

This silicon tuner IC is part of NXP's portfolio for TV reception, often paired with demodulators like the TDA10048HN. It serves as a key component in hybrid TV receivers, enabling simultaneous viewing and recording capabilities by providing high-quality signal tuning for various terrestrial broadcast standards.

Video Processing Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.

Video Processing FAQ

How is the master/slave mode configured for dual-tuner applications?

Master/slave mode is determined by the DC voltage applied to the XTOUT_MS pin. A voltage of 0 V to 0.1VCC sets the tuner to Master mode, while 0.4VCC to 0.6VCC sets it to Slave mode.

What crystal oscillator requirements does the TDA18271HD have?

The device requires a 16 MHz crystal reference that can withstand at least 100 μW drive level. An additional shunt capacitor with a typical value of 5.6 pF is also needed.