- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376712 > DG540DJ Wideband/Video “T” Switches PDF資料下載
參數(shù)資料
| 型號(hào)： | DG540DJ |
| 英文描述： | Wideband/Video “T” Switches |
| 中文描述： | 寬帶/視頻“T”型開關(guān) |
| 文件頁數(shù)： | 9/10頁 |
| 文件大小： | 154K |
| 代理商： | DG540DJ |
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+ -)
;-8, ! ! %2( ! ! 94 83
7-+2%07 '%2 &) '3286300)(
>! %'
,) :%09) 3* 32 '%4%'-8%2') "
6)(9')( 4634)68= /23;2 %7 $8,) &3(=>)**)'8 32
8,)
7;-8',
():-')7
4%6%1)86-' )**)'87 83 3''96 2) 3* 8,)7) )**)'87 -7
8,) 6)(9'8-32 -2
32
&3(=7396') 38) ,3;):)6 8,%8 83 -2'6)%7) !
2361%00= 6)59-6)7 ! 83 &) 6)(9')( 7-2') ! 83
! ! 1%< )(9'8-32 -2 ! '%97)7 %2
-2'6)%7) -2 6
32
,)2') % '314631-7) ,%7 83 &)
%',-):)( 8 -7 %073 97)*90 83 238) 8,%8 348-191
:-()3 0-2)%6-8= 4)6*361%2') )+ (-**)6)28-%0 4,%7)
%2( +%-2 3''967 ;,)2 ! -7 %6392( !
32
# 1%= &)
'%97)7
:%6-397
*36 %2 -2'6)%7-2+ !
! )0-1-2%8)7 8,) 2))( 83 &-%7 8,) %2%03+ 7-+2%0
97-2+
438)28-%0
(-:-()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:
)'3940-2+ '%4%'-8367 7,390( &) -2'36436%8)( 32
%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:
7) )<8)27-:) +6392( 40%2)7 32 (39&0) 7-()(
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 |
|---|---|
| DG540DN | Wideband/Video “T” Switches |
| DG542DY | Wideband/Video “T” Switches |
| DG541 | Wideband/Video “T” Switches |
| DG541AP | Wideband/Video “T” Switches |
| DG541DJ | Wideband/Video “T” Switches |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DG540DJ-E3 | 功能描述:視頻開關(guān) IC SPST 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 |
| DG540DN | 功能描述:視頻開關(guān) IC SPST 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 |
| DG540DN-E3 | 功能描述:視頻開關(guān) IC SPST 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 |
| DG541 | 制造商:Siemens 功能描述: |
| DG541AP | 功能描述:視頻開關(guān) IC SPST 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。