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參數(shù)資料
| 型號： | ADG466 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Triple and Octal Channel Protectors |
| 中文描述： | 三和八進(jìn)制通道保護(hù)器 |
| 文件頁數(shù)： | 1/10頁 |
| 文件大小： | 231K |
| 代理商： | ADG466 |
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
ADG466/ADG467
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
Triple and Octal
Channel Protectors
FUNCTIONAL BLOCK DIAGRAMS
ADG466
ADG467
V
D1
V
D2
V
D3
V
S1
V
S2
V
S3
V
D1
V
D2
V
D3
V
D8
V
S1
V
S2
V
S3
V
S8
V
DD
V
SS
V
DD
V
SS
V
IN
V
DD
V
DD
V
IN
V
OUT
OUTPUT CLAMPED
@ V
DD
– 1.5V
V
OUT
GENERAL DESCRIPTION
The ADG466 and ADG467 are triple and octal channel pro-
tectors, respectively. The channel protector is placed in series
with the signal path. The channel protector will protect sensitive
components from voltage transience in the signal path whether
the power supplies are present or not. Because the channel
protection works whether the supplies are present or not, the
channel protectors are ideal for use in applications where
correct power sequencing can’t always be guaranteed (e.g., hot-
insertion rack systems) to protect analog inputs. This is dis-
cussed further, and some example circuits are given in the
Applications section of this data sheet.
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 protec-
tor behaves just like a series resistor during normal operation,
i.e., (V
SS
+ 2 V) < V
IN
< (V
DD
– 1.5 V). When a channel’s ana-
log 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
– 1.5V. Circuitry and signal source
protection 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 of
this data sheet.
The ADG466 and ADG467 can operate off both bipolar and
unipolar supplies. The channels are normally on when power is
connected and open circuit when power is disconnected. With
power supplies of
±
15 V, the on-resistance of the ADG466 and
FEATURES
Fault and Overvoltage Protection up to
6
40 V
Signal Paths Open Circuit with Power Off
Signal Path Resistance of R
ON
with Power On
44 V Supply Maximum Ratings
Low On Resistance
ADG466/ADG467 60
V
typ
1 nA Max Path Current Leakage @ +25
8
C
Low R
ON
Match (5
V
max)
Low Power Dissipation 0.8
m
W typ
Latch-Up Proof Construction
APPLICATIONS
ATE Equipment
Sensitive Measurement Equipment
Hot-Insertion Rack Systems
ADG467 is 60
typ with a leakage current of
±
1 nA max.
When power is disconnected, the input leakage current is ap-
proximately
±
5 nA typ.
The ADG466 is available in 8-lead DIP, SOIC and
μ
SOIC
packages. The ADG467 is available in an 18-lead SOIC package
and a 20-lead SSOP package.
PRODUCT HIGHLIGHTS
1. Fault Protection.
The ADG466 and ADG467 can withstand continuous volt-
age inputs from –40 V to +40V. When a fault occurs due to
the power supplies being turned off or due to an overvoltage
being applied to the ADG466 and ADG467, the output is
clamped. When power is turned off, current is limited to the
microampere level.
2. Low Power Dissipation.
3. Low R
ON
.
ADG466/ADG467 60
typ.
4. Trench Isolation Latch-Up Proof Construction.
A dielectric trench separates the p- and n-channel MOSFETs
thereby preventing latch-up.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| ADG466BN | 制造商:Analog Devices 功能描述: |
| ADG466BR | 制造商:AD 制造商全稱:Analog Devices 功能描述:Triple and Octal Channel Protectors |
| ADG466BRM | 制造商:Analog Devices 功能描述: |
| ADG467 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Triple and Octal Channel Protectors |
| ADG467BR | 功能描述:IC CHAN PROTECTOR OCTAL 18-SOIC RoHS:否 類別:過電壓，電流，溫度裝置 >> TVS - 其它復(fù)合 系列:ADG467 標(biāo)準(zhǔn)包裝:1 系列:- 電壓 - 工作:120V 電壓 - 箝位:- 技術(shù):混合技術(shù) 功率（瓦特）:- 電路數(shù):1 應(yīng)用:通用 封裝/外殼:模塊 供應(yīng)商設(shè)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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