【产品特性】‧World's smallest class of package (2016 size = 2.1 x 1.7 mm), for a footprint 36% smaller and a cubic volume 46% smaller than its predecessor
‧Frequency stability on a par with that of its predecessor. Capable of supporting even GPS applications, with a frequency-temperature coefficient of 0.5 x 10-6 (-30° to +85°C)
‧Low-voltage driving, with a minimum voltage of 1.68 V. The low-power design cuts power consumption by approximately 30% compared its predecessor
‧A wide output frequency range of from 13 to 52 MHz
‧High reliability provided by the use of wire bonding
‧External dimensions：2.1 x 1.7 x 0.88 mm max.
‧Output frequency range：13 to 52 MHz
‧Initial Frequency deviation：±2.0 x 10-6 Max. / 1h after 2nd reflow
‧Frequency-temperature coefficient：±0.5 x 10-6 Max. / -30∘to +85∘C
‧Operation temperature range：-30∘to +85∘C
‧Operation voltage range：1.68 to 3.3V
【产品应用】The market for GPS capability in mobile terminals has been expanding in recent years. In particular, the percentage of cell phones with built-in GPS functions is rising globally due to applications that allow their location to be pinpointed in the event of an emergency call. The expansion of the market for personal navigation devices (PND) and other navigation systems is also driving demand for frequency-stable TCXOs, which are essential for accurate positioning. Mobile GPS devices such as these will be packing more features in increasingly dense assemblies and this trend is expected to drive market demand for high-stability TCXOs, especially small units.
The TG-5025BA is equipped with a photo AT chip, a very small, crystal chip microfabricated using Epson Toyocom's unique QMEMS*1 technology. In addition to minimal variability of characteristics, the new oscillator promises high reliability thanks to the use of internal wire bonding and Epson Toyocom's original NPO (New Platform Oscillator) structure*2. In the NPO structure the crystal unit, encased in a ceramic package, is sealed together with an oscillation circuit in a molded plastic housing. This structure reduces the susceptibility of frequency to changes in ambient temperature. Epson Toyocom's IC design technology brings additional advantages to the TG-5025BA, including precise temperature compensation, low power consumption since driving is performed at voltages as low as 1.68 V, and a wide output frequency range (13 to 52 MHz).
【文字介绍】Epson Toyocom公司於今年日本高新科技展(CEATEC Japan)中宣佈其已開發出尺寸更小且頻率穩定的新型溫度補償晶體振盪器(TCXO)，TG-5025BA採用2016尺寸封裝(實際尺寸為2.1x1.7mm)，適用於要求嚴格的GPS應用裝置。
TG-5025BA搭載photo AT晶片，這是一種採用Epson Toyocom獨家QMEMS技術的微製程極小型石英晶體晶片。該新型振盪器除了具備極小的變異性外，同時因採用內部接腳接合(wire bonding)及Epson Toyocom的原創新平台振盪器(New Platform Oscillator，NPO)結構而具有高度的穩定性。
在NPO結構中，內嵌於陶瓷封裝結構的石英晶體單元與振盪器電路一起封裝在環氧樹脂外殼內。此設計結構將可有效抑制輸出頻率因環境溫度變化時的穩定性。Epson Toyocom TCXO IC設計技術為TG-5025BA帶來更多的優點，包括精確的溫度補償、低功耗(以1.68V的低電壓驅動)及範圍寬廣的輸出頻率(13MHz~52MHz)。
Epson Toyocom已成功整合開發及製造石英晶體元件所需的各項技術：包括石英晶體晶片製程、以及封裝與電路設計技術，進而製造出小型、穩定且適用GPS的TCXO。TG-5025BA的表面積比前代產品(2520 TCXO)減少36%，體積減少43%。雖然它的尺寸極小，卻擁有0.5x10-6的頻率溫度係數(溫度變化範圍內的頻率穩定性指標)，與一般封裝尺寸的TCXO相同。且TG-5025BA的耗電量極少，較前代產品減少約30%。