SN761678DBTR

The SN761678DBTR is one member of the SN761678 family which is designed as the synthesized tuner IC that can be used in (1)TVs; (2)VCR/DVD Recorders; (3)Set-Top Boxes. This device consists of a phase-locked loop (PLL) synthesizer, three-band local oscillator and mixer, 30-V output tuning amplifier, and four NPN band-switch drivers, and is available in a small-outline package. A 15-bit programmable counter and reference divider are controlled by I2C bus protocol. Tuning step frequency is selectable by this reference divider ratio for a crystal oscillator.

Features of the SN761678DBTR are:(1)single-chip mixer/oscillator and phase-locked loop (PLL) synthesizer; (2)three-band local oscillator; (3)I2C bus protocol (bidirectional data transmission); (4)30-V tuning voltage output; (5)four NPN-type band-switch drivers; (6)programmable reference divider ratio (512, 640, or 1024); (7)external 4-pin intermediate frequency (IF) filter between mixer output and IF amplifier input; (8)5-V power supply; (9)30-pin thin shrink small-outline package (TSSOP).

The absolute maximum ratings of the SN761678DBTR can be summarized as:(1)Supply voltage range:0.4 V to 6.5 V;(2)Input voltage 1, VGND:0.4 V to 0.4 V;(3)Input voltage 2, VVTU:0.4 V to 35 V;(4)Input voltage 3, VIN:0.4 V to 6.5 V;(5)Continuous total dissipation, PD: 1071 mW;(6)Operating free-air temperature range, TA:20°C to 85°C;(7)Storage temperature range, Tstg:65°C to 150°C;(8)Maximum junction temperature, TJ: 150 °C;(9)Maximum short-circuit time, tSC(max): 10 s. If you want to know more information such as the electrical characteristics about the SN761678DBTR, please download the datasheet in www.seekic.com or www.chinaicmart.com.