Hot products: 7-inch TFT display, Tiny MEMS resonator

MANHASSET, N.Y. — Among the hottest products posted this week at eeProductCenter were a 7-inch TFT display targeting automotive and industrial applications, a MEMS resonator that offers small size and high Q, a line of industrial grade LCDs with LED backlighting and a temperature sensor for DDR memory that's accurate to 1 degree C.

The top product this week was a 7-inch, 800-by-480 transflective TFT display with a white LED backlight from One Stop Displays (Winter Park, Fla.) The company's OSD070WGEA1 low temperature polysilicon TFT display targets automotive and industrial mobile applications.

The OSD070WGEA1 offers a 500:1 contrast ratio, high color saturation and wide viewing angles. The LED backlight provides a uniform luminance of 500 cd/m2. The display supports an extended operating temperature range of -20°C to 70°C. The storage temperature is -30°C to 85°C. Offering a simple interface, the WVGA module features a built-in timing controller and includes all the high- and low-voltage power supplies required by the panel. The device is RoHS compliant.

Also attracting lots of interest at the site was a MEMS resonator from startup company called SiTime (Sunnyvale, Calif.) that's claimed to be the industry's smallest and thinnest megahertz resonator. Shipped in die form, the SiT0100 MEMS resonator measures 0.8 (tall) by 0.6 (wide) by 0.15-mm (thick), and is compatible with standard semiconductor packaging for system-in-package and multi-chip modules.

The SiT0100 SiRES resonator operates at 5.1 MHz and has a Q of approximately 80,000. The phase noise performance is -115 dBc/Hz at 10 KHz allowing it to be used in most consumer, automotive, and industrial frequency control applications. When combined with an oscillator circuit the power consumption is similar to quartz devices with similar Qs.

The MEMS resonators are not directly compatible with quartz resonators. These MEMS devices require a unique drive circuit and a stable bias voltage for proper operation, said the company. Unlike quartz resonators, the megahertz resonator may be placed in a MCM or SIP solution and handled as any semiconductor die. The resonator may be wire bonded or flip chipped and then plastic encapsulation with no substantial change in performance.

Kyocera Industrial Ceramics Corp. launched a line of LCDs that feature a unique light-emitting diode backlighting system instead of conventional cold-cathode fluorescent lamps.

The new LCD products are designed to meet a wide range of industrial display applications including manufacturing controls, test and measurement equipment, and medical systems. The LCDs are available in STN, CSTN, and TFT models, initially in 4.7-inch and 5.7-inch diagonal modules. Introduction of 3.5-, 6.2-, 7.5-, 8.9-, and 10.4-inch modules will follow.

The LCDs feature 3/5/12 Vdc operation and reduced or eliminated EMI (requires no inverter). They are also said to provide faster start-up in low-temperature environments and luminance control via current control to further reduce power consumption and extend battery life. The environmentally-friendly LCDs are lead and mercury free.

Maxim Integrated Products (Sunnyvale, Calif.) introduced a temperature sensor for DDR memory accurate to 1 degree C. It's aimed at DDR memory modules in notebook computer applications.

Designed as a viable option to using a sensor on a motherboard with standard guardband circuitry to estimate the temperature of a memory module, the MAX6604 directly monitors and updates temperature readings eight times per second. Three address inputs set the bus address (eight addresses).

For the second week in a row, visitors to our sites were very interested in Telegent Systems (Sunnyvale, Calif.) TLG1100 TV receiver chip. The TLG1100 and its companion device called the TLG1130 integrate all major mobile TV receiver functions, from antenna input to digital video output.

For more details on these and the remaining top products of the week, click on links below:

One Stop Displays TFT display

SiTime’s MEMS resonator

Kyocera’s LCDs

Maxim’s temperature sensor

Telegent’s TV receiver on a chip.

A HREF=”″>Atmel's newest ARM7 MCUs

AMCC’s PowerPC Evaluation Kit

Maxim’s LED driver IC

Developer’s kit for microdisplays

Audio transducers from Transducers USA

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