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FPD33684A Dataheets PDF



Part Number FPD33684A
Manufacturers National Semiconductor
Logo National Semiconductor
Description Low Power/ Low EMI/ TFT-LCD Column Driver with RSDS Inputs/ 64 Grayshades/ and 384 Outputs for XGA/SXGA Applications
Datasheet FPD33684A DatasheetFPD33684A Datasheet (PDF)

FPD33684 Low Power, Low EMI, TFT-LCD Column Driver with RSDS Inputs, 64 Grayshades, and 384 Outputs for XGA/SXGA Applications May 2002 FPD33684A/ FPD33684B Low Power, Low EMI, TFT-LCD Column Driver with RSDS™ Inputs, 64 Grayshades, and 384 Outputs for XGA/SXGA Applications General Description The FPD33684 Column Driver is a direct drive, 64 gray level, 384 output, TFT-LCD column driver with an RSDS™ data interface. It provides the capability to display 262,144 colors (18-bit color) with a larg.

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FPD33684 Low Power, Low EMI, TFT-LCD Column Driver with RSDS Inputs, 64 Grayshades, and 384 Outputs for XGA/SXGA Applications May 2002 FPD33684A/ FPD33684B Low Power, Low EMI, TFT-LCD Column Driver with RSDS™ Inputs, 64 Grayshades, and 384 Outputs for XGA/SXGA Applications General Description The FPD33684 Column Driver is a direct drive, 64 gray level, 384 output, TFT-LCD column driver with an RSDS™ data interface. It provides the capability to display 262,144 colors (18-bit color) with a large dynamic output range for twisted nematic applications. When used in a bank with other FPD33684 column drivers, the FPD33684 can support both XGA (8 drivers) or SXGA (10 drivers) applications. Output voltages are programmably gamma corrected to provide a direct mapping between digital video and LCD panel brightness. An RSDS™ (Reduced Swing Differential Signaling) interface is used between the timing controller and the column driver to minimize EMI and reduce power. The FPD33684 offers a low power, low EMI column driver solution with direct-drive dynamic range and dot-inversion addressing. Features n RSDS™ (Reduced Swing Differential Signaling) data bus for low power, reduced EMI and small PCB foot print n Up to 85MHz clock n Supports both XGA and SXGA timing n Supports notebook and monitor applications n Smart Charge Conservation for low power consumption n 64 Gray levels per color (18-bit color) n Supports both Dot and N-Line inversion n Externally programmable gamma characteristic n Very low offsets for artifact-free images n High voltage outputs for high contrast in a large range of display panel applications n Optional, high current, repair line buffers n Available in 2 common gamma reference curves Ordering Information Part Number FPD33684 Gamma Curve A or B Custom TCP # XX(Note 1) Package Suffix CT Note 1: Custom TCP # is assigned by National Semiconductor for each custom TCP design System Diagram DS200113-1 © 2002 National Semiconductor Corporation DS200113 www.national.com FPD33684 Absolute Maximum Ratings (Note 2) Analog Supply, (VDD2) (Note 3) Logic Supply, (VDD1) (Note 3) High Bias Supply, (VHBIAS) (Note 3) Low-Polarity RDAC Reference Voltages, (VGMA6 to VGMA10) (Note 3) High-Polarity RDAC Reference Voltages, (VGMA1 to VGMA5) (Note 3) RDAC Current (All Gamma Voltage Taps), (IGMA to IGMA10) Input Voltage (Digital Logic), (VIN) (Note 3) Output Voltage, (VOUT) (Note 3) Output Current (Analog), (IOUT) Storage Temperature Range, (TS) −0.3V to +11.5V −0.3V to +5.0V −0.3V to +13.0V Note 2: “Absolute Maximum Ratings” are those values beyond which the safety of the device cannot be guaranteed. They are not meant to imply that the devices should be operated at these limits. The table of “Electrical Characteristics” specifies conditions of device operation. Note 3: Absolute voltages referenced to VSS1 = VSS2 = 0.0V. −0.3V to 0.5VDD2 0.5VDD2 − 1.0V to VDD2 + 0.3V −2.5mA to 2.5mA −0.3V to VDD1 + 0.3V −0.3V to VDD2 + 0.3V −7mA to +7mA −55˚C to +125˚C Recommended Operating Conditions Logic Supply Voltage (VDD1) Supply Voltage (VDD2) Supply Voltage (VHBIAS) Operating Temperature (TA) Min 2.7 7.5 VDD2 −10 +25 Typ 3.3 Max 3.6 10.5 VDD2+1.5 +70 Units V V V ˚C DC Electrical Characteristics Digital Electrical Characteristics Symbol VIH VIL VOH VOL IDD1 IIH IIL CIN Parameter Logic Input High Voltage Logic Input Low Voltage Logic Output High Voltage Logic Output Low Voltage Logic Current Input Leakage Input Leakage Input Capacitance IOH = −0.5mA IOL = 0.5mA (Note 4) VDD1 = 3.6V, VIN = 3.6V VDD1 = 3.6V, VIN = 0V All logic pins -1 -1 2 3.0 VDD1 − 0.5 0.5 8.0 1 1 Conditions Min 0.7 VDD1 0.3 VDD1 Typ Max Units V V V V mA µA µA pF Note 4: CLK frequency = 32.5 MHz, VDD1 = 3.3V, VSS1 = VSS2 = 0.0V, charge share time = 1.5µs, line time = 22µs. RSDS Characteristics Symbol VIHRSDS VILRSDS VCMRSDS IDL Parameter RSDS™ High Input Voltage RSDS™ Low Input Voltage RSDS™ Common Mode Input Voltage Range RSDS™ Input Leakage Current Conditions VCMRSDS = 1.2V (Note 5) see Figure 1 VCMRSDS = 1.2V (Note 5) see Figure 1 VIHRSDS = +100mV, VILRSDS = −100mV (Note 6) see Figure 1 DxxP, DxxN, CLKP, CLKN VSS1 + 0.1 −10 Min 100 Typ 200 −200 −100 VDD1 − 1.3 10 Max Units mV mV V µA Note 5: VCMRSDS = (VCLKP + VCLKN)/2 or (VDxxP + VDxxN)/2. Note 6: Positive means that DxxP (or CLKP) is higher than RSDS ground DxxN (or CLKN). Negative means that DxxP (or CLKP) is lower than RSDS ground DxxN (or CLKN). www.national.com 2 FPD33684 RSDS Characteristics (Continued) DS200113-2 FIGURE 1. RSDS™ Signal Definition Analog Electrical Characteristics Symbol IDD2 IHBIAS PD VGMA1 VGMA5 VGMA6 VGMA10 VCS Parameter Supply Current Consumption Current Consumption through HBIAS pin Power Dissipation Upper RDAC High Side Input Upper RDAC Low Side Input Lower RDAC High Side Input Lower RDAC Low Side Input Charge Share Voltage (Note 7) (Note 8) (Note 8) (Note 8) (Note 8) VDD2/2 + 0.2 VDD2/2 + 0.2 0.2 0.2 The Greater of VDD1 or VGMA6 30 VSS2 + 0.2 each VGMA1 = V.


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