Datasheet TDA8360; TDA8361; TDA8362 (Philips) - 10

Philips Semiconductors Objective specification Integrated PAL and PAL/NTSC TV TDA8360; TDA8361; TDA8362 processors The conditions are: This voltage will switch off the • Signal identified at colour-killer in the TDA8395 and f switch on the R−Y and B−Y outputs of osc = 3.6 MHz; VO = 6 V • the TDA8395. Forcing the system to Signal identified at the SECAM standard can be fosc = 4.4 MHz (or no colour); achieved by loading pin 32 with a VO = 8 V. current of 150 µA. Then the system This information can be used to manager in the TDA8362 will not switch the sound bandpass filter and search for PAL or NTSC signals. trap filter. Forcing to NTSC is not possible. For PAL/SECAM applications the
TDA8361
input signal for the TDA8395 can be obtained from pin 27 (hue control) This IC contains an automatic when this pin is connected to the PAL/NTSC decoder. The conditions positive supply rail via the 5 kΩ or for connecting the reference crystals 10 kΩ resistor. An external source are the same as for the TDA8360. selector is required by the The decoder can be forced to PAL TDA8395/TDA8362 combination for when the hue control pin is connected PAL/SECAM/NTSC applications. to the positive supply voltage via a 5 kΩ or 10 kΩ resistor
RGB output circuit
(approximately). The decoder cannot be forced to the NTSC standard. It is The colour difference signals are also possible to see if a colour signal matrixed with the luminance signal to is recognized via the saturation pin. obtain the RGB signals. Linear amplifiers have been chosen for the
TDA8362
RGB inputs so that the circuit is suitable for incoming signals from the In addition to the possibilities of the SCART connector. The contrast and TDA8361, the TDA8362 can brightness controls operate on co-operate with the SECAM add-on internal and external signals. decoder TDA8395. The communication between the two The fast blanking pin has a second ICs is achieved via pin 32. The detection level at 3.5 V. TDA8362 supplies the reference When this level is exceeded the signal (4.43 MHz) for the calibration RGB outputs are blanked so that system of the TDA8395, identification “On-Screen-Display” signals can be of the colour standard is via the same applied to the outputs. connection. When a SECAM signal is The output signal has an amplitude of detected by the TDA8395 the IC will approximately 4 V, black-to-white, draw a current of 150 µA. When with nominal input signals and TDA8362 has not identified a colour nominal control settings. The nominal signal in this condition it will go into black level is 1.3 V. the SECAM mode, that means it will switch off the R−Y and B−Y outputs and increase the voltage level on pin 32. March 1994 10