BUF11704

BUF05704, BUF06704 BUF07704, BUF11704 SBOS277F − JUNE 2004 − REVISED DECEMBER 2007 18-V SUPPLY MULTI-CHANNEL GAMMA CORRECTION BUFFER FEATURES D Wide Supply Range: 4.5 V to 18 V D Gamma Correction Channels: 10, 6, and 4 D Integrated VCOM Buffer D Excellent Output Current Drive: − Gamma Channels: > 30 mA at 0.5 V Swing to Rails(1) − VCOM: > 100 mA typ at 2 V Swing to Rails(1) D Large Capacitive Load Drive Capability D Rail-to-Rail Output D PowerPAD Package D Low-Power/Channel: < 500 µA D High ESD Rating: 8 kV HBM, 2 kV CDM, 300 V MM D Specified for −25°C to +85°C (1) See Typical Characteristic curves for details. V DD BUFxx704 So urce Driver Gamma 1 Gamma 2 Gamma 3 Gamma (n − 2) Gamma (n − 1) Gamma (n) DESCRIPTION The BUFxx704 are a series of multi-channel buffers targeted towards gamma correction in high-resolution LCD panels. They are pin-compatible with the existing BUFxx702 and BUFxx703 families and operate at higher supply voltages up to 18 V (19 V absolute max). The higher supply voltage enables faster response times and brighter images in large-screen LCD panels. This is especially important in LCD TV applications. The number of gamma correction channels required depends on a variety of factors and differs greatly from design to design. Therefore, 10, 6, and 4 channel options are offered. For additional space and cost savings, a VCOM channel with > 100mA drive capability is integrated into the BUF11704, BUF07704, and BUF05704. The BUF11704, BUF07704, BUF06704, ...