Vcom/gamma buffer provides pin-controlled table switching in <300ns

Sunnyvale, Calif.—Maxim Integrated Products has introduced the DS3510, a highly integrated gamma/Vcom buffer with on-chip EEPROM that supports four gamma curves and rapid switching among curves.

The device consists of ten independent gamma channels and one Vcom channel; each channel includes 4 bytes of EEPROM, two latches, an 8-bit D/A converter, and a high-performance buffer amplifier.

The features enable pin-controllable, gamma/Vcom table switching in less than 300ns. When speed is not critical, table switching can be commanded through an I²C-compatible interface. Each table implements a different gamma curve, which allows TFT-LCD designers to compensate for a wide variety of conditions, such as temperature, ambient-light level, backlight setting, aging, and color mode in sequential displays.

Additionally, each of the DS3510's ten gamma outputs supports current sinking/sourcing over the full analog range. According to Maxim, competitive products typically place inconvenient voltage and current-direction restrictions on each gamma output, which can lead to incompatibility with column-driver input characteristics and complicate PCB layout. The DS3510 eliminates these concerns, the company added.

The device operates from a 2.7V to 5.5V digital supply and supports an analog supply range of 9.0V to 15.0V. Fully specified to operate over a wide -45°C to +95°C temperature range, the DS3510 is packaged in a 48-pin TQFN that is available in either bulk or tape-and-reel form.

Pricing: Start at $1.50 (10,000-up, FOB USA).
Datasheet: Click here.

Maxim Integrated Products,

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