The LM8207 is a combination of 18-channel gamma buffers, a VCOM
driver and a temperature compensated internal voltage reference. It is designed for buffering
voltage levels and driving high capacitive loads in large TFT panels. The gamma buffers are
individually optimized to the input/output requirements of their respective gamma position to cover
the whole voltage range from rail to rail. Any desired gamma correction curve can be obtained by
combining the gamma buffers with external resistors. The VCOM driver has a
high output current capability and is stable with large capacitive loads, typical for large panel
sizes. This will result in a fast recovery time for large voltage variations at the output. The
internal band gap reference can be used to form a highly stable voltage to generate the gamma
correction voltages. In combination with the internal amplifier, the reference voltage can be
programmed to voltages up to the positive rail. The LM8207 is offered in a 48-pin TSSOP
package.