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BUF16820,pdf(14-Channel Gamma
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The BUF16820 is a programmable voltage reference generator designed for gamma correction in TFT-LCD panels. It provides 14 programmable outputs and two VCOM channels, each with 10-bit resolution. It offers on-chip, one-time programmable (OTP) memory that allows the user to store the gamma voltages on-chip. This eliminates the need for an external EEPROM.
This programmability replaces the traditional, time-consuming process of changing resistor values to optimize the various gamma voltages, and allows designers to determine the correct gamma voltages for a panel very quickly. Required voltage changes can also be easily implemented without changing the hardware.
The BUF16820 uses TI’s latest, small-geometry analog CMOS process, which makes it a very competitive choice for full production, not just evaluation.
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