TDA2542

The TDA2542 is an IF amplifier and AM demodulator circuits for colour and black and white televisionreceivers using PNP tuners. It is intended to reception of positive modulation for french standard. The feature of TDA2542 are as follows: (1)supply voltage: 12V TYP ; (2)supplycurrent: 50mA TYP ; (3)IF input voltage sensitivity at f = 32.7MHz : 85VRMS TYP; (4)video output voltage: 2.5VPP TYP; (5)IF voltage gain control range: 64dB TYP ; (6)signal to noise ratio at VI = 10mV : 58dB TYP ; (7)A.F.C. Output voltage swing for f = 100kHz : 10V TYP.

The absolute maximum ratings of the TDA2542 are: (1)Supply Voltage: 13.8; (2)Tuner A.G.C. Voltage: 12 V ; (3)Power Dissipation: 900 mW ; (4)Storage Temperature: 55 to + 125 ; (5)Operating Ambient Temperature: 0 to + 70 .

The following is about the electrical characteristics of TDA2542: (1)supply voltage range: 10.2V min, 12V typical and 13.8V max; (2)supply current: 40mA min, 50mA typical and 58mA max; (3)IF input voltage sensitivity: 85VRMS typical and 160VRMS; (4)max input voltage: 150mV; (5)differential input impedance: 2k typical; (6)zero signal output voltage: 2.9V typical; (7)IF voltage gain control range: 64dB typical; (8)signal to noise: 58dB typical; (9)differential gain: 4% typical and 10% max; (10)differential phase: 2% typical and 10% max; (11)carrier signal at video output: 4 mVRMS typical and 10 mVRMS max; (12)2nd harmonic of carrier at video output: 20 mVRMS typical and 30 mVRMS max.