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TEA6414A Arkusz danych(PDF) 3 Page - STMicroelectronics |
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TEA6414A Arkusz danych(HTML) 3 Page - STMicroelectronics |
3 / 9 page ELECTRICAL CHARACTERISTICS TA =25 oC, VCC = 10V , RLOAD = 10k Ω ,CLOAD = 3pF (unless otherwise specified) Symbol Parameter Min. Typ. Max. Unit VCC Supply Voltage (pin 9) 7 10 11 V ICC Power Supply Current (without load on outputs ; VCC=10V) 20 30 40 mA INPUTS Maximum Signal Amplitude (CVBS signal) 2 VPP Input Current (per output connected, input voltage = 5VDC) (this current is X6 when all outputs are connected on the input) 13 µA DC Level 3.3 3.6 3.9 V DC Level Shift (temperature from 0 to 70 oC) 5 100 mV OUTPUTS (VIN =1VPP for all dynamic tests) Pins 13-14-15-16-17-18 Dynamic 4.5 5.5 VPP Output Impedance 25 50 Ω Gain 5.5 6.5 7.5 dB Bandwidth (-1dB attenuation) 7 10 MHz Bandwidth (-3dB attenuation) 15 MHz Crosstalk (f = 5MHz) -50 dB DC level 2.4 2.7 3 V GENERAL DESCRIPTION The main function of the IC is to switch 8 video input sources on 6 outputs. Each output can be switched on only one of each input. On each input an alignment of the lowest level of the signal is made (bottom of synch. top for CVBS or black level for RGB signals). Each nominal gain between any input and output is 6.5dB. For D2MAC or Chroma signal the align- ment is switched off by forcing, with an external resistor bridge, 5 VDC on the input. Each input can be used as a normal input or as a MAC or Chroma input (with external resistor bridge). All the switching possibilities are changed through the BUS. Driving 75 Ω load needs an external transistor. It is possible to have the same input connected to several outputs. The starting configuration (power supply from 0 to 10V) is undetermined. In this case, 6 words of 8 bits are necessary to determine one configuration. In other case, one word of 8 bits is necessary to determine one configuration. BUS SELECTIONS (THOMSON BUS) ADDRESS MSB DATA LSB Selected Output Output is selected by address bits 00000 XXX Pin 18 00100 XXX Pin 14 00010 XXX Pin 16 00110 - - - Not used 00001 XXX Pin 17 00101 XXX Pin 13 00011 XXX Pin 15 00111 - - - Not used Selected Input Input is selected by data bits 00XXX 000 Pin 5 00XXX 100 Pin 8 00XXX 010 Pin 3 00XXX 110 Pin 20 00XXX 001 Pin 6 00XXX 101 Pin 10 00XXX 011 Pin 1 00XXX 111 Pin 11 Example : 00100 101 connects pin 10 (input) to pin 14 (output) (equals 25 hex.). TEA6414A 3/9 |
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