TDA2556

The TDA2556 is a monolithic integrated circuit for quasi-split-sound processing, including two FM demodulator, for two carrier stereo TV receivers and VTR. It is intended to reception of positive modulation for french standard. The feature of TDA2556 are as follows: (1)3 stage gain controlled IF amplifier; (2)AGC circuit; (3)reference amplifier and limiter amplifier for vision carrier processing; (4)linear multiplier for quadrature demodulation.

The absolute maximum ratings of the TDA2556 are: (1)supply voltage, pins 23: 13.2 V; (2)supply current, pin23: 95mA; (3)storage temperature range: -25 to + 150 ; (4)operating ambient temperature: 0 to + 70 .

The following is about the electrical characteristics of TDA2556: (1)supply voltage: 10.8V min, 12V typical and 13.2V max; (2)supply current: 73mA typical and 95mA max; (3)input voltage for start of gain control: 150V typical and 200V max; (4)input voltage for end of gain control: 100mV min and 250mV typical; (5)gain control range: 60dB min and 64dB typical; (6)input resistance: 2k typical; (7)input capacitance: 2pF typical; (8)input voltage for start of limiting: 700V typical; (9)maximum input voltage: 200mV typical; (10)voltage level d.c.: 2.2V.