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TEA6425D Datasheet(PDF) 3 Page - STMicroelectronics |
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TEA6425D Datasheet(HTML) 3 Page - STMicroelectronics |
3 / 9 page ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VCC Supply Voltage 12 V VI Voltage at Pin i to GND 0, VCC V Toper Operating Ambient Temperature 0, + 70 oC Tstg Storage Temperature -20, + 150 oC THERMAL DATA Symbol Parameter Value Unit Rth (j-a) Junction-ambient Thermal Resistance Min. 80 oC/W ELECTRICAL CHARACTERISTICS (VCC =8V, Tamb =25 oC, VIN = 1V, Gain = 6.5dB, Cload = 20pF, Rload = 4.7k Ω ; Gain condition, clamp and 3-state are controlled by I2C bus, unless otherwise specified) Symbol Parameter Test Conditions Min. Typ. Max. Unit SUPPLY VCC Supply Voltage 7.2 8 8.8 V ICC Supply Current 45 60 mA RR Supply Voltage Rejection f = 1kHz 40 46 dB VIDEO INPUTS (clamping at bottom sync level) VIN Max. Signal Amplitude Clamp Active 2 VPP Vclamp Clamp Level Clamp Active 1.7 2 2.3 V VDC Input DC Level Clamp Inactive 2.7 3 3.3 V IIN Leakage Current 1 input connected to 1 output 2 5 µA Iclamp Clamp Current Vclamp - 200mV 0.9 3 mA VIDEO OUTPUTS ROUT Output Resistance 15 50 Ω ZHI Output ”off” Impedance no load 50 k Ω CHI COUT in 3-state no load 3 pF G1 Voltage Gain f = 100kHz 0 0.5 1 dB G2 Voltage Gain f = 100kHz 6 6.5 7 dB Vsync Top Level Sync (Y or CVBS) G = 6.5dB, Clamp Active 1 1.25 2 V Vbias Output Mean Level (chroma) G = 0.5dB, Clamp Inactive G = 6.5dB, Clamp Inactive 2 3 2.4 3.4 3 4 V V Isolation ”off” State f = 5MHz 60 dB Crosstalk Attenuation between Channels f = 5MHz 50 60 dB B Bandwidth Cload = 20pF, G = 6.5dB at ± 0.5dB at ± 1dB at - 3dB 5 10 21 MHz This device is controlled via the I 2C bus. 4 ad- dresses can be selected by a 4-level detector on Pin 7, thus enabling parallel connection of 4 de- vices. Via the I 2C bus : - The input signals can be clamped at their nega- tive peak (top sync). - The gain factor of the outputs can be selected between 0.5 and 6.5dB. - Each of the 6 inputs can be connected to the 8 outputs. - Each output can individually be set in a high impedance state. Two internal SVHS mixers will add the selected Y and C inputs. Two dedicated outputs will have the option to select this added signal also. FUNCTIONAL DESCRIPTION TEA6425 3/9 |
Similar Part No. - TEA6425D |
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Similar Description - TEA6425D |
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