Datasheet > ADUM141ES

ADUM141ES

更新时间： 2023-12-20 18:44:34

品牌	Logo	应用领域
亚德诺 - ADI		航空
页数	文件大小	规格书
21页	501K
描述
航空航天 150 MBPS 四通道数字隔离器

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ADUM141ES 数据手册

ADuM141ES

PC BOARD LAYOUT

The ADuM141E1S digital isolator requires no external interface circuitry for the logic interfaces. Power supply

bypassing is strongly recommended at the input and output supply pins (see Figure 5).Bypass capacitors are most

conveniently connected between Pin 1 and Pin 2 for VDD1 and between Pin 15 and Pin 16 for VDD2. The

recommended bypass capacitor value is between 0.01 μF and 0.1 μF. The total lead length between both ends of the

capacitor and the input power supply pin must not exceed 10 mm. Bypassing between Pin 1 and Pin 8 and between

Pin 9 and Pin 16 must also be considered, unless the ground pair on each package side is connected close to the

package.

VDD1

GND1

VIA

VDD2

GND2

VOA

VIB

VOB

VIC

VOC

VOD

VE1

VID

VE2

GND1

GND2

Figure 5 – Recommended Printed Circuit Board Layout

In applications involving high common-mode transients, ensure that board coupling across the isolation barrier is

minimized. Furthermore, design the board layout such that any coupling that does occur equally affects all pins on a

given component side. Failure to ensure this can cause voltage differentials between pins exceeding the Absolute

Maximum Ratings of the device, thereby leading to latch-up or permanent damage. See the AN-1109 Application Note

for board layout guidelines.

PROPAGATION DELAY-RELATED PARAMETERS

Propagation delay is a parameter that describes the time it takes a logic signal to propagate through a component.

The input-to-output propagation delay time for a high-to-low transition may differ from the propagation delay time of a

low-to-high transition. See Figure 3.

Pulse width distortion is the maximum difference between these two propagation delay values and an indication of

how accurately the timing of the input signal is preserved.

Channel-to-channel matching refers to the maximum amount the propagation delay differs between channels within a

single ADuM141E1S component. Propagation delay skew refers to the maximum amount the propagation delay

differs between multiple ADuM141E1S components operating under the same conditions.

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