TUA6010X

The TUA6010X device combines a digitally programmable phase locked loop (PLL), with a mixer oscillator block including two balanced mixers and oscillators for use in TV tuners.

The PLL block with four hard-switched chip addresses forms a digitally programmable phase locked loop. With a 4 MHz quartz crystal, the PLL permits precise setting of the frequency of the tuner oscillator up to 1.1 GHz in increments of 62.5 kHz. The tuning process is controlled by a microprocessor via an I²C Bus. The device has three output ports, which all can also be used as input ports (two TTL inputs and one A/D converter input). A flag is set when the loop is locked. The input ports and lock flag can be read by the processor via the I²C Bus.

The mixer oscillator block includes two balanced mixers (double balanced mixer with low-impedance input), two frequency and amplitude-stable balanced oscillators for VHF, HYPER and UHF, a low-noise reference voltage source and a band switch.