AD8509

9- and 11-Channel, Muxed Input LCD Reference Buffers AD8509/AD8511 FEATURES Single-supply operation: 3.3 V to 6.5 V High output current: 300 mA Low supply current: 6 mA Stable with 1000 pF loads Pin compatible with LMC6009 Pin compatible with CL-FP6131 48-lead, Pb-free TSSOP/LFCSP packages APPLICATION LCD line inversion gamma references GENERAL DESCRIPTION The AD8509 and AD8511 are 9-channel and 11-channel LCD reference buffers, respectively, designed to drive 64 gray scale column drivers. Each buffer has an A/B input to select between two voltages for LCD displays. These buffers drive the resistor ladders of LCD column drivers for gamma correction. The LCD drivers have higher slew rates and higher output drive currents than similar competitive parts. This increases the stability of the reference ladder, resulting in better gray scale and visual performance. The AD8509 and AD8511 are specified over the −40°C to +85°C temperature range. They are available in 48-lead, Pb-free TSSOP ...