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參數(shù)資料
| 型號： | DG458 |
| 廠商： | Vishay Intertechnology,Inc. |
| 英文描述： | Fault-Protected Single 8-Channel Analog Multiplexer(帶故障和過壓保護(hù)的8通道單端模擬多路轉(zhuǎn)換器) |
| 中文描述： | 故障保護(hù)單8通道模擬多路復(fù)用器（帶故障和過壓保護(hù)的8通道單端模擬多路轉(zhuǎn)換器） |
| 文件頁數(shù)： | 8/8頁 |
| 文件大?。?/td> | 71K |
| 代理商： | DG458 |
DG458/459
Vishay Siliconix
www.vishay.com
8
Document Number: 70064
S-52433
—
Rev. F, 06-Sep-99
FIGURE 5.
Enable Delay
S
1
S
2
–
S
8
A
0
A
1
A
2
50
1 k
V
O
EN
V+
GND
V
–
D
35 pF
–
15 V
+15 V
DG458
0 V
3 V
0 V
90%
50%
Enable
Input
V
O
Switch
Output
V
S
t
ON(EN)
t
OFF(EN
+5 V
The Vishay Siliconix DG458 and DG459 multiplexers are fully
fault- and overvoltage-protected for continuous input voltages
up to
35 V whether or not voltage is applied to the power
supply pins (V+, V
–
). These multiplexers are built on a
high-voltage junction-isolated silicon-gate CMOS process.
Two n-channel and one p-channel MOSFETs are connected
in series to form each channel (Figure 1).
Within the normal analog signal range (
variation as a function of analog signal voltage is comparable
to that of the classic parallel N-MOS and P-MOS switches.
10 V), the r
DS(on)
When the analog signal approaches or exceeds either supply
rail, even for an on-channel, one of the three series MOSFETs
gets
cut-off,
providing
inherent
overvoltages even if the multiplexer power supply voltages are
lost. This protection is good up to the breakdown voltage of the
respective series MOSFETs. Under fault conditions only sub
microamp leakage currents can flow in or out of the
multiplexer. This not only provides protection for the
multiplexer and succeeding circuitry, but it allows normal,
undisturbed operation of all other channels. Additionally, in
case of power loss to the multiplexer, the loading caused on
the transducers and signal sources is insignificant, therefore
redundant multiplexers can be used on critical applications
such as telemetry and avionics.
protection
against
FIGURE 6.
Overvoltage Protection
–
15 V
–
15 V
+15 V
–
35 V
Overvoltage
+35 V
Overvoltage
Q
1
Q
2
Q
3
n-Channel
MOSFET
is On
p-Channel
MOSFET
is Off
n-Channel
MOSFET
is Off
(b) Overvoltage with Multiplexer Power On
–
15 V
+15 V
D
S
G
D
S
G
D
S
G
–
35 V
Overvoltage
+35 V
Overvoltage
Q
1
Q
2
Q
3
–
35 V
n-Channel
MOSFET
is On
p-Channel
MOSFET
is Off
n-Channel
MOSFET
is Off
(a) Overvoltage with Multiplexer Power Off
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DG459 | Fault-Protected Differential 4-Channel Analog Multiplexer(帶故障和過壓保護(hù)的雙4通道模擬多路轉(zhuǎn)換器) |
| DG4599DL | Low-Voltage Single-Supply, SPDT Analog Switch in SC-70 |
| DG4599 | Single-pole/double-throw analog switches |
| DG459DJ | Fault-Protected Single 8-Ch/Differential 4-Ch Analog Multiplexers |
| DG459 | Fault-Protected Single 8-Ch/Differential 4-Ch Analog Multiplexers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DG458_08 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Fault-Protected Single 8-Ch/Differential 4-Ch Analog Multiplexers |
| DG458_11 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Fault-Protected Single 8-Ch/Differential 4-Ch Analog Multiplexers |
| DG458AK | 功能描述:多路器開關(guān) IC Sgl 8:1 w/Fault Prot Multiplexer/MUX RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 開關(guān)數(shù)量:4 開啟電阻（最大值）:7 Ohms 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 傳播延遲時(shí)間:0.25 ns 工作電源電壓:2.3 V to 3.6 V 工作電源電流: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:UQFN-16 |
| DG458AK/883 | 制造商:Vishay Siliconix 功能描述:ANLG MUX SGL 8:1 18V/22V 16CDIP - Rail/Tube |
| DG458AK\883 | 制造商:Vishay Siliconix 功能描述:8CH FAULT PROTECTED MUX |
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