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參數(shù)資料
| 型號(hào)： | ZXFV302N16 |
| 英文描述： | IC-SM-4:1 MUX SWITCH |
| 中文描述： | 集成電路的Sm - 4：1復(fù)用開關(guān) |
| 文件頁數(shù)： | 5/12頁 |
| 文件大?。?/td> | 277K |
| 代理商： | ZXFV302N16 |
APPLICATIONS INFORMATION
Introduction
A typical circuit application is outlined in Figure 1,
above, where two devices are combined to provide
8-to-1 multiplexing. A more detailed basic application
circuit for 4 dc-coupled channels is given in Figure 3,
and an AC coupled circuit for 8 channels is shown in
Figure 4. These circuits are suitable for 75
transmission line connections atboth the inputand the
output and are useful for distribution of wide-band
signals such as video via cables. The 75
terminating resistor at the output gives the correct
matching condition to a terminated video cable. The
amplifier load is then 150 .
reverse
The wide bandwidth of this device necessitates some
care in the layout of the printed circuit. Partly for this
reason, an Evaluation Circuit board is available and is
described in a later paragraph. A continuous ground
plane is required under the device and its signal
connection paths, to provide the shortest possible
ground return paths for signals and power supply
filtering. A double-sided or multi-layer PCB
construction is required, with plated-through via holes
providing closely spaced low-inductance connections
from some components to the continuous ground
plane (some ofthese holes are notvisible in the figures
for the Evaluation Circuit Board – artworks and NC drill
output can be provided if required).
For the power supply filtering, low inductance surface
mount capacitors are normally required. It has been
found that very good RF decoupling is provided on
each supply using a 1000 pF NPO size 0805 ceramic
surface mountcapacitor, closestto the device pin, with
an adjacent0.1 F X7R capacitor. Otherconfigurations
arepossibleand itmay befound thata single0.01 F or
0.1
F X7R capacitor, size 0805 or smaller, on each
supply gives good results. However this should be
supported by larger decoupling capacitors elsewhere
on the printed circuit board. Values of 1 to 10
recommended, particularly where the voltage
regulators are located more than a few inches from the
device. These larger capacitors are recommended to
be solid tantalum electrolytic or ceramic types.
F are
Evaluation Circuit
An evaluation circuit is available, constructed on a
double-side printed circuitboard.The circuitis suitable
for both the ZXFV301 and ZXFV302 and either device
may befitted. Figures 5and6show thecircuitdiagram,
and the layout of components and copper. A parts list
is provided below. This layout serves as a useful
example for many applications, showing the practical
implementation of the advice given above in the
Introduction.
BNC connector sockets allow connection to test
instruments via 50
cables. The output circuit includes
a resistor matching circuit to present a load of 150
the device and simultaneously provide 50
impedance. The attenuation of this matching circuit is
15.45 dB. As the device has unity voltage gain, the
overall loss when loaded by 75
to
output
is also 15.45 dB.
EVALUATION CIRCUIT PARTS LIST:
ZXFV301
ISSUE 2 - NOVEMBER 2002
5
QTY
CCT-REF
VALUE
DESCRIPTION
Resistors, surface mount
4
R1,R2,R3,R4
51R
0805
4
R5,R6,R7,R8
22k
0805
1
R9
120R
0805
1
R10
62R
0805
1
R11
10R
0805
5
R12 to R16
47k
0805
Capacitors, surface mount
6
100nF
25V ceramic 0805
X 7R
2
1nF
50V ceramic 0805
NPO
2
10 F
16V Tant Elec size
C
Integrated Circuits
1
U1
Zetex ZX F 301N16
or ZX FV302N16
Miscellaneous
5
BNC Socket, PCB
straight flange,
e.g. Tyco
B35N14H999X 99
1
3-way PCB screw
terminal block IMO
20.501/3SB
1
SW1
DIL switch, 8 way
10
TP1 to TP10
PCB test terminal,
red, W.Hughes
100-107
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| ZXFV302N16TA | 功能描述:多路器開關(guān) IC 300MHz - 4:1 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 |
| ZXFV302N16TC | 功能描述:IC SWITCH 4X1 16SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 模擬開關(guān)，多路復(fù)用器，多路分解器 系列:- 標(biāo)準(zhǔn)包裝:48 系列:- 功能:開關(guān) 電路:4 x SPST - NO 導(dǎo)通狀態(tài)電阻:100 歐姆 電壓電源:單/雙電源 電壓 - 電源，單路/雙路(±):2 V ~ 12 V，±2 V ~ 6 V 電流 - 電源:50nA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:16-SOIC 包裝:管件 |
| ZXFV304N16TA | 功能描述:視頻 IC 4:1ch G2 Video Mux 2bit Controller RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel |
| ZXFV401 | 制造商:ZETEX 制造商全稱:ZETEX 功能描述:SYNC SEPARATOR WITH VARIABLE FILTER |
| ZXFV401N16TA | 功能描述:IC SEPARATOR SYNC W/FLTR 16-SOIC RoHS:否 類別:集成電路 (IC) >> 線性 - 視頻處理 系列:- 產(chǎn)品變化通告:Product Discontinuation 07/Mar/2011 標(biāo)準(zhǔn)包裝:3,000 系列:OMNITUNE™ 類型:調(diào)諧器 應(yīng)用:移動(dòng)電話，手機(jī)，視頻顯示器 安裝類型:表面貼裝 封裝/外殼:65-WFBGA 供應(yīng)商設(shè)備封裝:PG-WFSGA-65 包裝:帶卷 (TR) 其它名稱:SP000365064 |
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