NXP Semiconductors has announced the TDA18274, a hybrid silicone tuner for worldwide terrestrial and cable TV reception. Supporting all analogue and digital TV standards, the tuner is optimised for direct on-board designs. The tuner is available in a 48pin, 7x7mm HL-QFN package version featuring integrated RF filters and a 40pin, 6x6mm HV-QFN package version with external ultra-high and very-high frequencies filters. According to the company, it is also optimised for multi-tuner applications, eliminating the need for a companion chip by integrating the RF splitter function, enabling shared use of a single 16MHz crystal via a crystal oscillator output buffer, and providing a control interface that can manage up to four tuners via four I2C addresses. The tuner is immune to LTE interference and spurious and field interferences including EMI. It offers good handling of digital TV group D-Book 7 requirements. The tuner includes RF input bandwidth extended to 1GHz, low intermediate frequency output interface from 3 to 7.5MHz, enabling high compatibility with SoCs, good phase noise performance, and two general purpose output pins. It eliminates the need for external low noise amplifier, SAW filters and extra balanced-to-unbalanced, claims the company.
