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ADG467BRZ-REEL7

更新时间： 2024-01-31 11:06:16
品牌 Logo 应用领域
亚德诺 - ADI 开关光电二极管晶体管
页数 文件大小 规格书
17页 347K
描述
Octal Channel Protector in SOIC Package

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ADG467BRZ-REEL7 数据手册

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Octal Channel Protectors  
ADG467  
FUNCTIONAL BLOCK DIAGRAM  
FEATURES  
V
V
SS  
DD  
Fault and overvoltage protection up to 40 V  
Signal paths open circuit with power off  
Signal path resistance of RON with power on  
44 V supply maximum ratings  
Low on resistance: 62 Ω typical  
1 nA maximum path current leakage @ +25°C  
Low RON match (5 Ω maximum)  
V
V
V
V
V
V
D1  
D2  
D3  
S1  
S2  
S3  
Low power dissipation 0.8 μW typical  
Latch-up proof construction  
V
V
D8  
S8  
V
V
IN  
OUT  
ADG467  
V
V
OUT  
IN  
APPLICATIONS  
ATE equipment  
Sensitive measurement equipment  
Hot insertion rack systems  
V
V
DD  
DD  
OUTPUT CLAMPED  
AT V – 1.5V  
DD  
Figure 1.  
GENERAL DESCRIPTION  
The ADG467 is an octal channel protector. The channel  
protector is placed in series with the signal path. The channel  
protector protects sensitive components from voltage transience  
in the signal path regardless if the power supplies are present or  
not. For this reason, the channel protectors are ideal for use in  
applications where correct power sequencing cannot always be  
guaranteed (for example, hot insertion rack systems) to protect  
analog inputs. This is described further, and some example  
circuits are given in the Applications Information section.  
connected and open circuit when power is disconnected. With  
power supplies of 15 V, the on resistance of the ADG467 is  
62 Ω typical with a leakage current of 1 nA maximum. When  
power is disconnected, the input leakage current is approx-  
imately 0.5 nA typical.  
The ADG467 is available in an 18-lead SOIC package and a  
20-lead SSOP package.  
PRODUCT HIGHLIGHTS  
1. Fault Protection.  
Each channel protector has an independent operation and con-  
sists of an N-channel MOSFET, a P-channel MOSFET, and an  
N-channel MOSFET, connected in series. The channel protector  
behaves just like a series resistor during normal operation, that  
is, (VSS + 1.5 V) < VIN < (VDD − 1.5 V). When a channel’s analog  
input exceeds the power supplies (including VDD and VSS = 0 V),  
one of the MOSFETs switches off, clamping the output to either  
The ADG467 can withstand continuous voltage inputs  
from −40 V to +40 V. When a fault occurs due to the  
power supplies being turned off or due to an overvoltage  
being applied to the ADG467, the output is clamped.  
When power is turned off, current is limited to the  
microampere level.  
2. Low Power Dissipation.  
3. Low RON. 62 Ω typical.  
4. Trench Isolation Latch-Up Proof Construction.  
A dielectric trench separates the p- and n-channel  
MOSFETs thereby preventing latch-up.  
VSS + 1.5 V or VDD − 1.5 V. Circuitry and signal source protec-  
tion is provided in the event of an overvoltage or power loss.  
The channel protectors can withstand overvoltage inputs from  
−40 V to +40 V. See the Circuit Information section.  
The ADG467 can operate off both bipolar and unipolar  
supplies. The channels are normally on when power is  
Rev. B  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rights of third parties that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2011 Analog Devices, Inc. All rights reserved.  
 
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ADG467BRZ-REEL7 替代型号

型号 品牌 替代类型 描述 数据表
ADG467BR-REEL7 ADI

完全替代

 Octal Channel Protector in SOIC Package
ADG467BRZ-REEL ADI

完全替代

 Octal Channel Protector in SOIC Package
ADG467BR ADI

完全替代

 Triple and Octal Channel Protectors

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