一．產品描述 提供8個觸摸感應按鍵，二進制(BCD)編碼輸出，具有一個按鍵承認輸出的顯示，按鍵後的資料會維持到下次按鍵，可先判斷按鍵承認的狀態。提供低功耗模式，可使用於電池應用的產品。對於防水和抗干擾方面有很優異的表現! 二．產品特色 1.工作電壓範圍：3.1V – 5.5V 2. 工作電流： 3mA (正常模式)；15 uA (休眠模式) @5V 3. 8 個觸摸感應按鍵 4.持續無按鍵 4 秒，進入休眠模式 5. 提供二進制(BCD)編碼直接輸出介面(上電 D2~D0/111) 6. 按鍵後離開，輸出狀態會維持到下次按鍵才會改變。 7. 提供按鍵承認有效輸出，當有按鍵時輸出低電平，無按鍵為高電平。 8. 可以經由調整 CAP 腳的外接電容，調整靈敏度，電容越大靈敏度越高 9. 具有防水及水漫成片水珠覆蓋在觸摸按鍵面板，按鍵仍可有效判別 10. 內建 LDO 增加電源的抗干擾能力 三．產品應用 各種大小家電，娛樂產品 四．功能描述 1.VK3708BM 於手指按壓觸摸盤，在 60ms 內輸出對應按鍵的狀態。 2.單鍵優先判斷輸出方式處理, 如果 K1 已經承認了, 需要等 K1 放開後, 其他按鍵才能再被承認，同時間只有一個按鍵狀態會被輸出。 3.具有防呆措施, 若是按鍵有效輸出連續超過 10 秒, 就會做復位。 4.環境調適功能，可隨環境的溫濕度變化調整參考值，確保按鍵判斷工作正常。 5.可分辨水與手指的差異，對水漫與水珠覆蓋按鍵觸摸盤，仍可正確判斷按鍵動作。但水不可於按鍵觸摸盤上形成“水柱”，若如此則如同手按鍵一般，會有按鍵承認輸出。 6.內建 LDO 及抗電源雜訊的處理程序，對電源漣波的干擾有很好的耐受能力。 7.不使用的按鍵請接地，避免太過靈敏而產生誤動。 聯系人：許碩 QQ：191 888 5898 聯系電話：188 9858 2398（微信）
標簽： KEYS 3708 SOP 16 BM VK 抗干擾 防水 省電
上傳時間： 2019-08-08
上傳用戶：szqxw1688
High-Speed, Low-Power Dual Operational Amplifier The AD826 features high output current drive capability of 50 mA min per amp, and is able to drive unlimited capacitive loads. With a low power supply current of 15 mA max for both amplifiers, the AD826 is a true general purpose operational amplifier. The AD826 is ideal for power sensitive applications such as video cameras and portable instrumentation. The AD826 can operate from a single +5 V supply, while still achieving 25 MHz of band width. Furthermore the AD826 is fully specified from a single +5 V to ±15 V power supplies. The AD826 excels as an ADC/DAC buffer or active filter in data acquisition systems and achieves a settling time of 70 ns to 0.01%, with a low input offset voltage of 2 mV max. The AD826 is available in small 8-lead plastic mini-DIP and SO packages.
上傳時間： 2020-04-19
上傳用戶：su1254
PRODUCT DESCRIPTION The AD810 is a composite and HDTV compatible, current feedback, video operational amplifier, ideal for use in systems such as multimedia, digital tape recorders and video cameras. The 0.1 dB flatness specification at bandwidth of 30 MHz (G = +2) and the differential gain and phase of 0.02% and 0.04° (NTSC) make the AD810 ideal for any broadcast quality video system. All these specifications are under load conditions of 150 ? (one 75 ? back terminated cable). The AD810 is ideal for power sensitive applications such as video cameras, offering a low power supply current of 8.0 mA max. The disable feature reduces the power supply current to only 2.1 mA, while the amplifier is not in use, to conserve power. Furthermore the AD810 is specified over a power supply range of ±5 V to ±15 V.
上傳時間： 2020-04-19
上傳用戶：su1254
transimpedance linearization circuitry. This allows it to drive video loads with excellent differential gain and phase perfor mance on only 50 mW of power. The AD8001 is a current feedback amplifier and features gain flatness of 0.1 dB to 100 MHz while offering differential gain and phase error of 0.01% and 0.025°. This makes the AD8001 ideal for professional video electronics such as cameras and video switchers. Additionally, the AD8001’s low distortion and fast settling make it ideal for buffer high-speed A-to-D converters. The AD8001 offers low power of 5.5 mA max (VS = ±5 V) and can run on a single +12 V power supply, while being capable of delivering over 70 mA of load current. These features make this amplifier ideal for portable and battery-powered applications where size and power are critical. The outstanding bandwidth of 800 MHz along with 1200 V/μs of slew rate make the AD8001 useful in many general purpose high-speed applications where dual power supplies of up to ±6 V and single supplies from 6 V to 12 V are needed. The AD8001 is available in the industrial temperature range of –40°C to +85°C.
上傳時間： 2020-04-21
上傳用戶：su1254
The contemporary view of the Smart City is very much static and infrastructure- centric, focusing on installation and subsequent management of Edge devices and analytics of data provided by these devices. While this still allows a more efficient management of the city’s infrastructure, optimizations and savings in different do- mains, the existing architectures are currently designed as single-purpose, vertically siloed solutions. This hinders active involvement of a variety of stakeholders (e.g., citizens and businesses) who naturally form part of the city’s ecosystem and have an inherent interest in jointly coordinating and influencing city-level activities.
標簽： Internet Systems Cities People Things Smart The and of
上傳時間： 2020-05-26
上傳用戶：shancjb
In recent years, cellular voice networks have transformed into powerful packet-switched access networks for both voice communication and Internet access. Evolving Universal Mobile Telecommunication System (UMTS) networks and first Long Term Evolution (LTE) installations now deliver bandwidths of several megabits per second to individual users, and mobile access to the Internet from handheld devices and notebooks is no longer perceived as slower than a Digital Subscriber Line (DSL) or cable connection. Bandwidth and capacity demands, however, keep rising because of the increasing number of people using the networks and because of bandwidth-intensive applications such as video streaming. Thus, network manufacturers and network operators need to find ways to continuously increase the capacity and performance of their cellular networks while reducing the cost.
標簽： BRINGING NETWORKS Beyond and 3G 4G
上傳時間： 2020-05-26
上傳用戶：shancjb
From the transition of analog to digital communication along with seamless mobility and high computing power of small handheld devices, the wireless communications industry has seen tremendous changes leading to the integration of several telecommunication networks, devices and services over last 30 years. The rate of this progress and growth has increased particularly in the past decade because people no longer use their devices and networks for voice only, but demand bundle contents such as data download/streaming, HDTV, HD video , 3D video conferencing with higher efficiency, seamless connectivity, intelligence, reliability and better user experience. Although the challenges facing service providers and telecommunication companies differ by product, region, market size, and their areas of concentration but time to market, efficient utilization of their assets and revenue expansion, have impacted significantly how to manage and conduct their business while maintaining sufficient margin.
標簽： Convergence Networks Beyond 4G of
上傳時間： 2020-05-26
上傳用戶：shancjb
A decade ago, I first wrote that people moved, and networks needed to adapt to the reality that people worked on the go. Of course, in those days, wireless LANs came with a trade-off. Yes, you could use them while moving, but you had to trade a great deal of throughput to get the mobility. Although it was possible to get bits anywhere, even while in motion, those bits came slower. As one of the network engineers I worked with put it, “We’ve installed switched gigabit Ethernet everywhere on campus, so I don’t understand why you’d want to go back to what is a 25-megabit hub.” He un- derestimated the allure of working on the go.
上傳時間： 2020-05-26
上傳用戶：shancjb
The core thrust of architecture has been to define core business requirements, and then construct the IT solution to meet those requirements, typically as instances of software. While this seems like a simple concept, many in enter- prise IT went way off course in the last 10 to 15 years.
標簽： Architecture Revolution Agile
上傳時間： 2020-05-26
上傳用戶：shancjb
The past two decades have witnessed the introduction and unprecedented growth of cellular mobile telephony and wireless communications. Numerous wireless access technologies have been introduced in the mobile communications market. While some have flourished and formed the basis of successful manufacturing and network operator businesses, many have lived only for a short time and disappeared.
標簽： Communications Broadband Wireless Business
上傳時間： 2020-05-26
上傳用戶：shancjb
