參數(shù)資料
型號(hào)： DG542DJ
英文描述： Wideband/Video “T” Switches
中文描述： 寬帶/視頻“T”型開關(guān)
文件頁(yè)數(shù)： 9/10頁(yè)
文件大?。?/td> 154K
代理商： DG542DJ
DG540/541/542
Siliconix
S-53694—Rev. E, 28-May-97
9
Applications (Cont’d)
Power Supplies
A useful feature of the DG54X family is its power supply
flexibility. It can be operated from a single positive supply
(V+) if required (V– connected to ground).
Note that the analog signal must not exceed V– by more
than –0.3 V to prevent forward biasing the substrate p-n
junction. The use of a V– supply has a number of
advantages:
8 %003;7 *0)<-&-0-8= -2 %2%03+ 7-+2%0 ,%2(0-2+ -)
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32
# 1%= &)
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:%6-397
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(-:-()67
'%4%'-8367
%2(
0%6+)
'3940-2+
Decoupling
It is an established RF design practice to incorporate
sufficient bypass capacitors in the circuit to decouple the
power supplies to all active devices in the circuit. The
dynamic performance of the DG54X is adversely affected
by poor decoupling of power supply pins. Also, of even
more significance, since the substrate of the device is
connected to the negative supply, adequate decoupling of
this pin is essential.
Rules:
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%00 43;)6 79440= 4-27 ! ! )) -+96)
,)= 7,390( &) 13928)( %7 '037) %7 4377-&0) 83 8,)
():-') 4-27
%4%'-8367 7,390( ,%:) +33( ,-+, *6)59)2'=
',%6%'8)6-78-'7 8%28%091 &)%( %2(36 13230-8,-'
')6%1-' 8=4)7 %6) %()59%8)
9-8%&0) ()'3940-2+ '%4%'-8367 %6) > 83 >
8%28%091 &)%( 4097 > 83 >2 ')6%1-'
+
+
–3 V
GNDs
+15 V
DG540
V+
V–
S
1
S
2
S
3
S
4
D
1
D
2
D
3
D
4
C
1
C
2
C
1
C
2
C
1
= 10 F Tantalum
C
2
= 0.1 F Ceramic
Figure 7.
Supply Decoupling
Board Layout
PCB layout rules for good high frequency performance
must be observed to achieve the performance boasted by the
DG540. Some tips for minimizing stray effects are:
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7)4%6%8-2+ %(.%')28 7-+2%0 4%8,7 908-0%=)6 -7
):)2 &)88)6
))4 7-+2%0 4%8,7 %7 7,368 %7 46%'8-'%00= 4377-&0)
;-8, %00 ',%22)0 4%8,7 3* 2)%6 )59%0 0)2+8,
%6)*90 %66%2+)1)28 3* +6392( '322)'8-327 -7 %073
:)6= -14368%28 8%6 '322)'8)( 7=78)1 +6392(7
)0-1-2%8) 7-+2%0 '966)28 *03;-2+ 8,639+, +6392(
4%8, 4%6%7-8-' 6)7-78%2') *631 '3940-2+ &)8;))2
',%22)07
相關(guān)PDF資料
PDF描述
DG540 Wideband/Video “T” Switches
DG542AP Wideband/Video “T” Switches
DG540AP Wideband/Video “T” Switches
DG540DJ Wideband/Video “T” Switches
DG540DN Wideband/Video “T” Switches
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DG542DJ 制造商:Vishay Siliconix 功能描述:SWITCH DUAL SPDT VIDEO 500MHZ DIP
DG542DJ-E3 功能描述:視頻開關(guān) IC SPDT Wideband T-Sw RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:4 開啟電阻（最大值）:12 Ohms 傳播延遲時(shí)間: 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WQFN-42 封裝:Reel
DG542DY 功能描述:視頻開關(guān) IC SPDT Wideband T-Sw RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:4 開啟電阻（最大值）:12 Ohms 傳播延遲時(shí)間: 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WQFN-42 封裝:Reel
DG542DY-E3 功能描述:視頻開關(guān) IC SPDT Wideband T-Sw RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:4 開啟電阻（最大值）:12 Ohms 傳播延遲時(shí)間: 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WQFN-42 封裝:Reel
DG542DY-T1 功能描述:視頻開關(guān) IC SPDT Wideband T-Sw RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:4 開啟電阻（最大值）:12 Ohms 傳播延遲時(shí)間: 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:WQFN-42 封裝:Reel
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