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TDA4680 Datasheet(PDF) 13 Page - NXP Semiconductors |
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TDA4680 Datasheet(HTML) 13 Page - NXP Semiconductors |
13 / 28 page 1996 Oct 25 13 Philips Semiconductors Product specification Video processor with automatic cut-off and white level control TDA4680 Fast signal switch FSW1 (pin 13) to select Y, CD or R1, G1, B1 inputs (control bits: see Table 3) V13 voltage to select Y and CD −− 0.4 V voltage range to select R1, G1, B1 0.9 − 5.0 V R13 internal resistance to ground − 4.0 − k Ω ∆t difference between transit times for signal switching and signal insertion −− 10 ns Fast signal switch FSW2 (pin 1) to select Y, CD/R1, G1, B1 or R2, G2, B2 inputs (control bits: see Table 3) V1 voltage to select Y, CD/R1, G1, B1 −− 0.4 V voltage to select R2, G2, B2 0.9 − 5.0 V R1 internal resistance to ground − 4.0 − k Ω ∆t difference between transit times for signal switching and signal insertion −− 10 ns Saturation adjust [acts on internal RGB signals under I2C-bus control; sub-address 01H (bit resolution 1.5% of maximum saturation); data byte 3FH for maximum saturation, data byte 23H for nominal saturation and data byte 00H for minimum saturation] ds saturation below maximum at 23H − 5 − dB at 00H; f = 100 kHz − 50 − dB Contrast adjust [acts on internal RGB signals under I2C-bus control; sub-address 02H (bit resolution 1.5% of maximum contrast); data byte 3FH for maximum contrast, data byte 2CH for nominal contrast and data byte 00H for minimum contrast] dc contrast below maximum at 2CH − 3 − dB at 00H − 22 − dB Brightness adjust [acts on internal RGB signals under I2C-bus control; sub-address 00H (bit resolution 1.5% of brightness range); data byte 3FH for maximum brightness, data byte 27H for nominal brightness and data byte 00H for minimum brightness] dbr black level shift of nominal signal amplitude referred to cut-off measurement level at 3FH − 30 − % at 00H −−50 − % White potentiometers [under I2C-bus control; sub-addresses 04H (red), 05H (green) and 06H (blue); data byte 3FH for maximum gain; data byte 22H for nominal gain and data byte 00H for minimum gain]; note 3 ∆G v relative to nominal gain increase of AC gain at 3FH − 60 − % decrease of AC gain at 00H − 60 − % SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT |
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