NT3980
NT3980 is TFT LCD Source Driver manufactured by Novatek.
Features n Output: 384 output channels n 8-bit resolution /256 gray scales n Dot inversion with polarity control n V1 ~ V10 for adjusting Gamma correction n Power for analog circuit: 7 ~ 10V n Output dynamic range: 0.1V ~ AVDD-0.1 n Power consumption of analog circuit: 6m A n Operating frequency: 70MHz(Vcc:3.0V~3.6V) 45MHz(Vcc:2.5V~3.0V) n Output deviation: ±2mv n Data inversion for reducing EMI n Cascade function with bi-direction shift control n CMOS silicon gate ( p-type substrate ) n TCP package
General Description The NT3980 is a data driver IC for a color TFT LCD panel, XGA and SXGA applications. It receives 8 bit per-pixel digital display data,and generates output voltage for 256 grayscales ,enabling a maximum of 16.77M display colors . For better performance, dot inversion and a wide range voltage output, 10V, are designed in this chip, and for reducing EMI, data inversion control is .. used. This chip supplies 10 sections of voltage -reference for Gamma correction.
Block diagram
OUT1 OUT2 OUT3 OUT384 OUT383
Out Driver Buffer ( 384 channels )
V1 ~ V10
Digital to Analog Converter
8 8 8 8 8
REV1 REV2
D00 ~ D07 D10 ~ D17 D20 ~ D27 D30 ~ D37 D40 ~ D47 D50 ~ D57
Level Shift
8 8 8 8 8 8
1 64
48 Decoder
Line Latch ( 384 X 8 bits X 2 )
DIO1
64 Shift Registers
DIO2
Vcc
AVDD
AVSS
Version 1.0
October 16, 2001
NT3980 TFT LCD Source Driver
NT3980 TCP ( Top view )
DIO2 D57 D56 D55 D54 D53 D52 D51 D50 D47 D46 D45 D44 D43 D42 D41 D40 D37 D36 D35 D34 D33 D32 D31 D30 Vcc SHL V10 V9 V8 V7 V6 AVDD AVSS V5 V4 V3 V2 V1 GND NC CLK LD POL REV1 REV2 D27 D26 D25 D24 D23 D22 D21 D20 D17 D16 D15 D14 D13 D12 D11 D10 D07 D06 D05 D04 D03 D02 D01 D00 DIO1
OUT384 OUT383 OUT382 OUT381 OUT380
..
OUT5 OUT4 OUT3 OUT2 OUT1
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