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National Semiconductor Electronic Components Datasheet

FPD33684A Datasheet

Low Power/ Low EMI/ TFT-LCD Column Driver with RSDS Inputs/ 64 Grayshades/ and 384 Outputs for XGA/SXGA Applications

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May 2002
FPD33684A/ FPD33684B
Low Power, Low EMI, TFT-LCD Column Driver with
RSDSInputs, 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 RSDSdata
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 bright-
ness.
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)
Note 1: Custom TCP # is assigned by National Semiconductor for each custom TCP design
System Diagram
Package Suffix
CT
© 2002 National Semiconductor Corporation DS200113
DS200113-1
www.national.com


National Semiconductor Electronic Components Datasheet

FPD33684A Datasheet

Low Power/ Low EMI/ TFT-LCD Column Driver with RSDS Inputs/ 64 Grayshades/ and 384 Outputs for XGA/SXGA Applications

No Preview Available !

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
−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
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.
Recommended Operating
Conditions
Logic Supply Voltage
(VDD1)
Supply Voltage (VDD2)
Supply Voltage (VHBIAS)
Operating Temperature
(TA)
Min
2.7
7.5
VDD2
−10
Typ Max Units
3.3 3.6
V
10.5
VDD2+1.5
V
V
+25 +70
˚C
DC Electrical Characteristics
Digital Electrical Characteristics
Symbol
VIH
Parameter
Logic Input High Voltage
VIL Logic Input Low Voltage
Conditions
Min
0.7
VDD1
VOH Logic Output High Voltage
IOH = −0.5mA
VDD1
0.5
VOL Logic Output Low Voltage
IDD1
Logic Current
IIH Input Leakage
IIL Input Leakage
CIN Input Capacitance
IOL = 0.5mA
(Note 4)
VDD1 = 3.6V, VIN = 3.6V
VDD1 = 3.6V, VIN = 0V
All logic pins
-1
-1
Note 4: CLK frequency = 32.5 MHz, VDD1 = 3.3V, VSS1 = VSS2 = 0.0V, charge share time = 1.5µs, line time = 22µs.
Typ
3.0
2
Max
0.3
VDD1
0.5
8.0
1
1
Units
V
V
V
V
mA
µA
µA
pF
RSDS Characteristics
Symbol
VIHRSDS
Parameter
RSDSHigh Input Voltage
VILRSDS RSDSLow Input Voltage
VCMRSDS
IDL
RSDSCommon Mode Input
Voltage Range
RSDSInput 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
Min
100
VSS1 +
0.1
−10
Typ
200
−200
Max
Units
mV
−100
VDD1
1.3
10
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


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






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1 FPD33684A Low Power/ Low EMI/ TFT-LCD Column Driver with RSDS Inputs/ 64 Grayshades/ and 384 Outputs for XGA/SXGA Applications
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2 FPD33684B Low Power/ Low EMI/ TFT-LCD Column Driver with RSDS Inputs/ 64 Grayshades/ and 384 Outputs for XGA/SXGA Applications
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