該ADuM31601是USB端口隔離，結(jié)合了高速CMOS和單片空芯變壓器技術(shù)，這種隔離組件，提供卓越的性能特點(diǎn)，并輕松地以更低和全速USB兼容外設(shè)集成。

許多微控制器實(shí)現(xiàn)的USB，使其呈現(xiàn)只有D +和D -線路的外部引腳。這是可取的，因?yàn)樗诤芏嗲闆r下最大限度地降低外部元件，簡(jiǎn)化了設(shè)計(jì)。USB線之間切換，必須積極推動(dòng)D + / D -和允許外部電阻設(shè)置總線狀態(tài)，ADuM3160在提供用于檢測(cè)的輸出緩沖器狀態(tài)的數(shù)據(jù)流的方向和控制機(jī)制。數(shù)據(jù)方向是確定一個(gè)數(shù)據(jù)包由包的基礎(chǔ)。

ADuM3160在與使用的內(nèi)部邏輯結(jié)合的邊緣檢測(cè)基于iCoupler技術(shù)實(shí)現(xiàn)一個(gè)透明，易于配置，上游面向端口隔離。隔離上游街口提供了簡(jiǎn)單的諸多優(yōu)勢(shì)，電源管理。

在隔離了傳播延遲可比一個(gè)標(biāo)準(zhǔn)的集線器和電纜。它工作的其中一項(xiàng)從3.0 V至5.5 V電源電壓端，允許連接到VBUSx直接通過內(nèi)部調(diào)節(jié)電壓的信號(hào)水平。該ADuM3160提供孤立的上拉電阻器控制，使外設(shè)控制連接時(shí)序。設(shè)備消耗的電流足夠低空閑掛起狀態(tài)并不是必需的。

The ADuM31601 is a USB port isolator, based on Analog Devices, Inc., iCoupler? technology. Combining high speed CMOS and monolithic air core transformer technology, this isolation component provides outstanding performance characteristics and is easily integrated with low and full speed USB-compatible peripheral devices.

Many microcontrollers implement USB so that it presents only the D+ and D? lines to external pins. This is desirable in many cases because it minimizes external components and simplifies the design; however, this presents particular challenges when isolation is required. Because the USB lines must switch between actively driving D+/D? and allowing external resistors to set the state of the bus, the ADuM3160 provides mechanisms for detecting the direction of data flow and control over the state of the output buffers. Data direction is determined on a packet-by-packet basis.

The ADuM3160 uses the edge detection based iCoupler technology in conjunction with internal logic to implement a transparent, easily configured, upstream-facing port isolator. Isolating the upstream port provides several advantages in simplicity, power management, and robust operation.

The isolator has propagation delay comparable to that of a standard hub and cable. It operates with the supply voltage on either side ranging from 3.0 V to 5.5 V, allowing connection directly to VBUSx by internally regulating the voltage to the signaling level. The ADuM3160 provides isolated control of the pull-up resistor to allow the peripheral to control connection timing. The device draws low enough idle current that a suspend state is not required.

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