TI’s low-power FPD-Link serializer offers high resolution for tablets

With a pixel clock rate of 185-MHz, the dual LVDS DS90C187 supports WQXGA LCD panels at 30 Hz and QXGA panels at 60 Hz. According to TI the nearest competitor only reaches 174 MHz for WUXGA screen resolution. The DS90C187 also extends battery life by consuming a mere 90-mW when supporting the 1080p WUXGA screen resolution. For more information and to order samples, visit www.ti.com/ds90c187-pr-eu.

FPD-Link is the original LVDS interface for LCD panels and is interoperable with TI’s FlatLink products. It uses three or more differential signals, plus a clock, to transmit video data to the panel. LVDS is the most widely deployed interface for mid-sized display panels and requires no software overhead, enabling faster time-to-market for production ramp. Until recently, display resolutions for tablets could get by with a single-lane LVDS interface. With increasing panel sizes and higher resolution displays, dual LVDS interfaces are proliferating.

Other features include: a space-saving 7-mm x 7-mm dual row QFN package minimises board area and simplifies layout; support for reduced-swing LVDS mitigates electromagnetic interference (EMI) and an optional 18-bit colour mode, 6 bits per pixel, further reduces power consumption and enables compatibility with lower cost panels.

The DS90C187 joins the DS90C185 single FPD-Link serializer, which consumes only 50 mW of power, supports 24-bit LCD screen resolutions up to SXGA+ (1400 x 1050) at 60 Hz, and comes in a tiny 6-mm x 6-mm package. The DS90C187 and DS90C185 provide mobile computing designers with a wide array of options to choose from when selecting the graphics processor and display panel. The serializers serve as the bridge between the processor and LCD display, and can be combined with TI’s smart multicore OMAP applications processors for delivery of high-resolution video.

Texas Instruments

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