U2300B - TEMIC Semiconductors

U2300B VHF/UHF-Tuner-IC

This tuner IC requires a power supply of 12 V and performs the function of three separate oscillators and mixers, SAWF-driver, L.O.-output and tri-state band switch. Applications are 12 V TV- and VCR-tuners. Features D Frequency range from 48 to 860 MHz D Band A: balanced high impedance mixer input and amplitude controlled oscillator D Band B + C: balanced.

Features

D Frequency range from 48 to 860 MHz D Band A: balanced high impedance mixer input and amplitude controlled oscillator D Band B + C: balanced low impedance mixer input and symmetrical oscillator D Balanced L.O.-output for prescalers or PLL D SAW filter driver with low impedance output D Voltage regulator for stable operating characteristics D ESD protection on all pins except oscillator pins and RF-inputs Benefits D The integration of 3 bands allows to design economical 3-band tuners Block Diagram 13 4 65 7 8 10 9 11 19 2 Osc. A Osc. B Osc. C Voltage Stabiliser Band Switch L.O. 12 M.