AN1702FHK

Gradation Voltage Generating IC for Color TFT-LCD AN1702FHK Gray-scale voltage generating IC for liquid crystal display I Overview The AN1702FHK has been designed for LCD applications,and features built-in functions such as a gray-scale voltage generatior that supports 256 gradations, a reference voltage of 1.23 V, 16 output buffer amp circuits and a COM amplifier circuit. 36 9.00±0.20 7.00±0.10 25 Unit: mm (0.75) 37 24 I Features Built-in 1.23 V (typical) high-precision reference voltage power source Wide buffer amp. dynamic range output: VCC − 0.2 V (top stage) to GND + 0.15 V (bottom stage) Large ±100 mA (max.) COM amp. driving current 48 13 0.50 (0.75) 0.10 M (1.00) 0.15±0.05 0.10 Seating plane 0° to 8° 0.50±0.10 I Applications Gray-scale power sources for LCDs TQFP048-P-0707B (Lead-free package) I Block Diagram VB3 VB4 VB5 VB6 VB7 N.C. GND2 VA7 VA6 VA5 VA4 VA3 36 VB2 37 35 34 33 32 31 30 29 28 27 26 25 VA2 24 VB1 L4 38 L5 VA1 23 VA0 R2 L6 VB0 39 22 N.C. R1 www.DataSheet4U.com GND1 40 REF L7 R0 21 VREF N.C. 41 20 COM1 42 R7 VR 19 VREF 18 N.C. COM0 43 COM L2 COMS 44 L0 R6 17 R5 VCC1 VL0 45 L1 L3 N.C. 16 R4 N.C. 46 15 R3 VR0 VL1 47 14 VR1 VL2 48 1 2 3 4 5 6 7 8 9 10 11 12 13 VR2 VL3 VL4 VL5 VL6 VL7 N.C. VCC2 VR7 VR6 VR5 VR4 VR3 0.10+0.10 -0.05 (1.00) 1.20 max. 1 12 0.20±0.05 7.00±0.10 9.00±0.20 Publication date: December 2001 SDF00004BEB 1 AN1702FHK I Absolute Maximum Ratings Param...