参数资料
型号: SI8401AB-B-ISR
厂商: Silicon Laboratories Inc
文件页数: 13/34页
文件大小: 0K
描述: ISOL DGTL 2.5KVRMS 2CH 8SOIC
视频文件: Digital Isolation Overview
Digital Isolators vs. Optocouplers
标准包装: 2,500
输入 - 1 侧/2 侧: 2/1
通道数: 2
电源电压: 3 V ~ 5.5 V
电压 - 隔离: 2500Vrms
数据速率: 10Mbps
输出类型: 开路漏极
封装/外壳: 8-SOIC(0.154",3.90mm 宽)
供应商设备封装: 8-SOICN
包装: 带卷 (TR)
工作温度: -40°C ~ 125°C
Si840x
3. Device Operation
Device behavior during start-up, normal operation, and shutdown is shown in Figure 7, where UVLO+ and UVLO–
are the positive-going and negative-going thresholds respectively. Refer to Table 12 to determine outputs when
power supply (VDD) is not present.
3.1. Device Startup
Outputs are held low during powerup until VDD is above the UVLO threshold for time period tSTART. Following
this, the outputs follow the states of inputs.
3.2. Under Voltage Lockout
Under Voltage Lockout (UVLO) is provided to prevent erroneous operation during device startup and shutdown or
when VDD is below its specified operating circuits range. Both Side A and Side B each have their own under
voltage lockout monitors. Each side can enter or exit UVLO independently. For example, Side A unconditionally
enters UVLO when AVDD falls below AVDD UVLO– and exits UVLO when AVDD rises above AVDD UVLO+ . Side B
operates the same as Side A with respect to its BVDD supply.
UVLO+
UVLO-
AVDD
UVLO+
UVLO-
BVDD
INPUT
tSTART
tSD
tSTART
tSTART
tPH L
tPLH
OUTPUT
Figure 7. Device Behavior during Normal Operation
Rev. 1.6
13
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