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參數資料
| 型號： | ADG465 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Single Channel Protector in an SOT-23 Package |
| 中文描述： | 單通道保護的SOT - 23封裝 |
| 文件頁數： | 1/8頁 |
| 文件大小： | 108K |
| 代理商： | ADG465 |
REV. A
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
a
ADG465
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
Analog Devices, Inc., 1998
Single Channel Protector
in an SOT-23 Package
FUNCTIONAL BLOCK DIAGRAM
V
DD
V
SS
ADG465
V
D1
V
S1
V
IN
V
DD
V
DD
V
IN
V
OUT
OUTPUT CLAMPED
@ V
DD
– 1.5V
V
OUT
GENERAL DESCRIPTION
The ADG465 is a single channel protector in an SOT-23 pack-
age. The channel protector is placed in series with the signal
path, and will protect sensitive components from voltage tran-
sience in the signal path whether or not the power supplies are
present. Because the channel protection works regardless of the
presence of the supplies, the channel protectors are ideal for use
in applications where correct power sequencing cannot always
be guaranteed to protect analog inputs (e.g., hot-insertion rack
systems). This is discussed further, and some example circuits
are given, in the Applications section of this data sheet.
A channel protector consists of an n-channel MOSFET, a
p-channel MOSFET and an n-channel MOSFET, connected in
series. The channel protector behaves like a series resistor dur-
ing normal operation, i.e., (V
SS
+ 2 V) < V
IN
< (V
DD
– 1.5 V).
When a channel’s analog input exceeds the power supplies
(including V
DD
and V
SS
= 0 V), one of the MOSFETs will
switch off, clamping the output to either V
SS
+ 2 V or V
DD
– 1.5 V.
Circuitry and signal source protection is provided in the event of
an overvoltage or power loss. The channel protectors can with-
stand overvoltage inputs from –40 V to +40 V. See the Circuit
Information section of this data sheet.
The ADG465 can operate from both bipolar and unipolar
supplies. The channels are normally on when power is con-
nected, and open circuit when power is disconnected. With
power supplies of
±
15 V, the on-resistance of the ADG465 is
80
typ, with a leakage current of
±
1 nA max. When power
is disconnected, the input leakage current is approximately
±
5 nA typ.
The ADG465 is available in a 6-lead plastic surface mount
SOT-23 package, and an 8-lead
μ
SOIC package.
PRODUCT HIGHLIGHTS
1. Fault Protection.
The ADG465 can withstand continuous voltage inputs from
–40 V to +40 V. When a fault occurs due to the power sup-
plies being turned off, or due to an overvoltage being applied
to the ADG465, the output is clamped. When power is turned
off, current is limited to the nanoampere level.
2. Low Power Dissipation.
3. Low R
ON
80
typ.
4. Trench Isolation Latchup-Proof Construction.
A dielectric trench separates the p- and n-channel MOSFETs
thereby preventing latchup.
FEATURES
Fault and Overvoltage Protection up to
6
40V
Signal Paths Open Circuit with Power Off
Signal Path Resistance of R
ON
with Power On
44 V Supply Maximum Ratings
Low On Resistance 80
V
Typ
1 nA Max Path Current Leakage @ +25
8
C
Low Power Dissipation 0.8
m
W Typ
Latchup-Proof Construction
APPLICATIONS
ATE Equipment
Sensitive Measurement Equipment
Hot-Insertion Rack Systems
ADC Input Channel Protection
相關PDF資料 |
PDF描述 |
|---|---|
| ADG465BRM | Single Channel Protector in an SOT-23 Package |
| ADG465BRT | Single Channel Protector in an SOT-23 Package |
| ADG466BR | Triple and Octal Channel Protectors |
| ADG466BRM | Triple and Octal Channel Protectors |
| ADG467 | Triple and Octal Channel Protectors |
相關代理商/技術參數 |
參數描述 |
|---|---|
| ADG465BRM | 功能描述:IC 1CH PROTECTOR 8MSOP RoHS:否 類別:過電壓，電流，溫度裝置 >> TVS - 其它復合 系列:ADG465 標準包裝:1 系列:- 電壓 - 工作:120V 電壓 - 箝位:- 技術:混合技術 功率（瓦特）:- 電路數:1 應用:通用 封裝/外殼:模塊 供應商設備封裝:- 包裝:散裝 其它名稱:UAK 2-PE/S-X-120AC-STUAK2-PE/S-X-120AC-ST |
| ADG465BRM-REEL | 功能描述:IC 1CH PROTECTOR 8MSOP RoHS:否 類別:過電壓，電流，溫度裝置 >> TVS - 其它復合 系列:ADG465 標準包裝:1 系列:- 電壓 - 工作:120V 電壓 - 箝位:- 技術:混合技術 功率（瓦特）:- 電路數:1 應用:通用 封裝/外殼:模塊 供應商設備封裝:- 包裝:散裝 其它名稱:UAK 2-PE/S-X-120AC-STUAK2-PE/S-X-120AC-ST |
| ADG465BRM-REEL7 | 功能描述:IC 1CH PROTECTOR 8MSOP RoHS:否 類別:過電壓，電流，溫度裝置 >> TVS - 其它復合 系列:ADG465 標準包裝:1 系列:- 電壓 - 工作:120V 電壓 - 箝位:- 技術:混合技術 功率（瓦特）:- 電路數:1 應用:通用 封裝/外殼:模塊 供應商設備封裝:- 包裝:散裝 其它名稱:UAK 2-PE/S-X-120AC-STUAK2-PE/S-X-120AC-ST |
| ADG465BRMZ | 功能描述:IC CHANNEL PROTECTOR SGL 8MSOP RoHS:是 類別:過電壓，電流，溫度裝置 >> TVS - 其它復合 系列:ADG465 標準包裝:1 系列:- 電壓 - 工作:120V 電壓 - 箝位:- 技術:混合技術 功率（瓦特）:- 電路數:1 應用:通用 封裝/外殼:模塊 供應商設備封裝:- 包裝:散裝 其它名稱:UAK 2-PE/S-X-120AC-STUAK2-PE/S-X-120AC-ST |
| ADG465BRMZ-REEL7 | 功能描述:IC CHANNEL PROTECTOR SGL 8-MSOP RoHS:是 類別:過電壓，電流，溫度裝置 >> TVS - 其它復合 系列:ADG465 標準包裝:1 系列:- 電壓 - 工作:120V 電壓 - 箝位:- 技術:混合技術 功率（瓦特）:- 電路數:1 應用:通用 封裝/外殼:模塊 供應商設備封裝:- 包裝:散裝 其它名稱:UAK 2-PE/S-X-120AC-STUAK2-PE/S-X-120AC-ST |
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