TDA6650TT/C3

The TDA6650TT/C3 is designed as one kind of programmable 3-band mixer/oscillator and low phase noise PLL synthesizer device that is intended for pure 3-band tuner concepts applied to hybrid (digital and analog) or digital only terrestrial and cable TV reception. And TDA6650TT/C3 includes three double balanced mixers for low, mid and high bands, three oscillators for the corresponding bands, a switchable IF amplifier, a wideband AGC detector and a low noise PLL synthesizer.

Features of the TDA6650TT/C3 are:(1)Five possible step frequencies to cope with different digital terrestrial TV and analog TV standards; (2)Eight charge pump currents between 40 mA and 600 mA to reach the optimum phase noise performance over the bands; (3)Automatic Loop Bandwidth Control (ALBC) sets the optimum phase noise performance for DVB-T channels; (4)Five PMOS open-drain ports with 15 mA source capability for band switching and general purpose; one of these ports is combined with a 5-step ADC; (5)In-lock flag; (6)Crystal frequency output buffer; (7)33 V tuning voltage output; (8)Fractional-N programmable divider; (9)Balanced mixers with a common emitter input for the low band and for the mid band (each single input); (10)Balanced mixer with a common base input for the high band (balanced input).etc.

The absolute maximum ratings of the TDA6650TT/C3 can be summarized as:(1)supply voltage: 4.5 to 5.5 V;(2)supply current: 80 to 136 mA;(3)power-on reset supply voltage: 2.85 to 3.5 V;(4)frequency range the PLL is able to synthesize: 64 to 1024 MHz;(5)crystal frequency: 4.0 MHz;(6)input impedance (absolute value): 350 to 430 ;(7)crystal drive level: 70 uW;(8)output leakage current in off state: -10 uA;(9)output saturation voltage: 0.2 to 0.4 V;(10)ADC input voltage: 0 to 5.5 V. If you want to know more information such as the electrical characteristics about the TDA6650TT/C3, please download the datasheet in www.seekic.com or www.chinaicmart.com.