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參數(shù)資料
| 型號： | FPD33584 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | Low Power, Low EMI, TFT-LCD Column Driver with RSDS Inputs, 64 Grayshades, and 384 Outputs for XGA/SXGA Applications |
| 中文描述： | 低功耗，低EMI，TFT - LCD的輸入欄與區(qū)特別職務(wù)隊，64 Grayshades，和384的XGA輸出驅(qū)動器/ SXGA應(yīng)用 |
| 文件頁數(shù)： | 7/30頁 |
| 文件大小： | 294K |
| 代理商： | FPD33584 |
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Block Diagram
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Functional Description
GENERAL OVERVIEW
The FPD33584 is a low power, low EMI, 384 output column
driver with 64 gray level capability (6-bit). It provides direct
drive for TFT-LCD displays, eliminating the need for V
com
modulation. Direct drive significantly reduces system power
consumption and also reduces component count while pro-
viding superior image quality and cross-talk margin. The
FPD33584 utilizes National’s
Charge Conservation Technol-
ogy
that recovers energy stored in the capacitance of the
column lines to reduce power consumption further.
The FPD33584 is designed for use in systems using dot
inversion as the method of polarity inversion. Column inver-
sion and N-line inversion are also supported. Other modes of
polarity inversion including line inversion and frame inversion
are not supported.
Digital video data inputs to the FPD33584 are received via a
low power, low EMI Reduced Swing Differential Signaling
(RSDS) bus. The RSDS digital video commands one of 64
gray level voltages on each output. Output voltages are
driven with individual high drive, low offset operational am-
plifiers. Data loading and line buffering is accomplished by
means of an internal, bi-directional shift register.
GAMMA CORRECTION
The FPD33584 is designed to offer compatibility with a wide
range of panel gamma characteristics. The output voltage
levels corresponding to each of the 64 gray level commands
can be externally adjusted to match the desired gamma
characteristics of the display by means of two internal
resistor-string DACs (RDACs). One RDAC provides the
high-polarity output voltages (voltages higher than V
) and
the other provides the low-polarity output voltages (voltages
lower than V
com
).
The FPD33584 is available with several R-DAC resistance
curve options, all of which have been carefully designed to
accurately match the natural, inverse gamma of a twisted
F
www.national.com
7
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| FPD33680 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:FPD33680 Low Power, Low EMI, TFT-LCD Column Driver with RSDS Inputs, 64 Grayshades, and 480 Outputs for SXGA/UXGA Applications |
| FPD33684 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
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| FPD33684B | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Low Power, Low EMI, TFT-LCD Column Driver with RSDS⑩ Inputs, 64 Grayshades, and 384 Outputs for XGA/SXGA Applications |
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