TCA4500A

The TCA4500A is designed as a phase-locked loop stereo decoder which incorporates a variable channel separation control. In this TCA4500A IC, the sensitivity to the third harmonics of both the pilot and subcarrier frequencies has been eliminated due to the use of appropriate, digitlly generated waveforms in the phase-locked loop and decoder sections.

TCA4500A has three features. (1)Low distortion. (2)Excellent rejection of ARI subcarrier and pilot tone harmonics. (3)No need for coils. Those are all the main features.

Some absolute maximum ratings of TCA4500A have been concluded into several points as follow. (1)Its supply voltage would be 16V. (2)Its lamp drive voltage (lamp OFF) would be 30V. (3)Its lamp current would be 100mA. (4)Its channel separation control voltage would be 10V. (5)Its junction temperature would be 150°C. (6)Its storage temperature range would be from -40°C to 125°C. (7)Its thermal resistance (sytem-air) would be 90K/W. (8)Its supply voltage range would be from 8V to 16V. (9)Its ambient temperature range would be from -25°C to 85°C. It should be noted that stresses above those listed in absolute maximum ratings may cause permanent damage to device.

Also some electrical characteristics  of TCA4500A are concluded as follow. (1)Its current consumption would be typ 35mA. (2)Its stereo channel separation would be min 30dB for unadjusted and would be min 40dB for optimized on other channel. (3)Its monaural voltage gain would be min 0.8 and typ 1 and max 1.2. (4)Its signal to noise ratio in acc. with DIN 45405 would be typ 85dB. (5)Its frequency rejection 19kHz would be typ 31dB and 38kHz would be 50dB. (6)Its pilot tone harmonic rejection 57kHz ARI would be typ 60dB. (7)Its subcarrier harmonic rejection 76kHz would be typ 45dB and 114kHz would be typ 50dB. (8)Its minimum channel separation (V11=0V) would be max 1dB. And so on. If you have any question or suggestion or want to know more information of TCA4500A,  please contact us for details. Thank you!