ADUM7442 1 kV RMS Quad-Channel Digital Isolator

ADUM7442: 1 kV RMS Quad-Channel Digital Isolator

ADUM7442 功能框图 The ADuM7442are 4-channel digital isolators based on the Analog Devices, Inc., iCoupler® technology. Combining high speed CMOS and monolithic air core transformer technologies, these isolation components provide outstanding performance characteristics superior to the alternatives, such as optocoupler devices and other integrated couplers.

The ADuM744x family of quad 1 kV digital isolation devices is packaged in a small 16-lead QSOP. While most 4-channel isolators come in 16-lead wide SOIC packages, the ADuM744x frees almost 70% of board space and yet can still withstand high isolation voltage and meet regulatory requirements such as UL and CSA standards (pending). In addition to the space savings, the ADuM744x offers a lower price than 2.5 kV or 5 kV isolators where only functional isolation is needed.

This family, like many Analog Devices isolators, offers very low power consumption, consuming one-tenth to one-sixth the power of comparable isolators at comparable data rates up to 25 Mbps. Despite the low power consumption, all models of the ADuM744x provide low pulse width distortion (< 5 ns for C grade). In addition, every model has an input glitch filter to protect against extraneous noise disturbances.

The ADuM744x isolators provide four independent isolation channels in a variety of channel configurations and two data rates (see the Ordering Guide) up to 25 Mbps. All models operate with the supply voltage on either side ranging from 3.0 V to 5.5 V, providing compatibility with lower voltage systems as well as enabling voltage translation functionality across the isolation barrier. All products also have an output default high logic state in the absence of the input power.

技术特性

Small 16-lead QSOP package
1000 V rms isolation rating
Safety and regulatory approvals (pending)
- UL recognition
UL 1577: 1000 V rms for 1
minute
- CSA component acceptance notice #5A
Low power operation
(See Data sheet for details)
Bidirectional communication
Up to 25 Mbps data rate (NRZ)
3 V/5 V level translation
High temperature operation:
105°C
High common-mode transient immunity: >15 kV/μs

技术指标

# Ch: 4
# of Inputs Side 1: 2
# of Inputs Side 2: 2
Max Data Rate: 25Mbps
Insulation Rating (kVrms): 1kV rms
Max Prop Delay (ns): 56ns
Max Pos Supply (V): +5.5V
Max Operating Temp (°C): 105Deg

应用领域

General-purpose multichannel isolation
SPI interface/data converter isolation
RS-232/RS-422/RS-485 transceivers
Industrial field bus isolation

订购指南

产品型号	封装	引脚	温度范围	包装和数量	报价*(100-499)	报价*1000 pcs	RoHS
ADUM7442ARQZ 产品状态: 量产	16 ld QSOP	16	工业	Tube, 98	$ 1.73	$ 1.50	Y 材料信息
ADUM7442ARQZ-RL7 产品状态: 量产	16 ld QSOP	16	工业	Reel, 1000	-	$ 1.50	Y 材料信息
ADUM7442CRQZ 产品状态: 量产	16 ld QSOP	16	工业	Tube, 98	$ 2.50	$ 2.17	Y 材料信息
ADUM7442CRQZ-RL7 产品状态: 量产	16 ld QSOP	16	工业	Reel, 1000	-	$ 2.17	Y 材料信息

开发工具

产品型号	描述	报价	RoHS
EVAL-ADUMQSEBZ 产品状态: 量产	Evaluation Board	$ 25.00	是

ADUM7442 应用技术支持与电子电路设计开发资源下载

ADUM7442 英文数据手册DataSheet下载 Rev C, 02/2012 (pdf 496kB). pdf
ADUM7442 中文数据手册DataSheet下载 Rev B, 02/2011 (pdf 533kB). pdf
Analog Devices, Inc.ADI 美国模拟器件公司产品订购手册 .pdf
ADC模数转换器选型指南 . pdf