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參數(shù)資料
| 型號： | MAX4141CSD |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 運(yùn)動控制電子 |
| 英文描述： | 330MHz, 4x1 Precision Video Multiplexer |
| 中文描述： | 4-CHANNEL, VIDEO MULTIPLEXER, PDSO14 |
| 封裝： | 0.150 INCH, SO-14 |
| 文件頁數(shù)： | 7/8頁 |
| 文件大小： | 69K |
| 代理商： | MAX4141CSD |
On Maxim’s evaluation kit, the ground plane has been
removed from areas where keeping the trace capaci-
tance to a minimum is more important than maintaining
ground continuity. For example, the ground plane has
been removed from beneath the IC to minimize pin
capacitance.
The signal input line is approximately 0.103 inches
wide to minimize inductance and to provide a constant
50
impedance path. It is terminated by a 50
chip
resistor.
Bypass Components—Capac itors
Electrolytic and tantalum capacitors are available from
0.1μF to over 300μF, but have resonant frequencies
below 1MHz. Ceramic capacitors are highly recom-
mended and are available to 1μF, with the smaller val-
ues having resonant frequencies to almost 1GHz. The
less expensive capacitors are constructed using a
multilayer approach; high values are available, but res-
onant frequencies beyond a few hundred megahertz
are not, because of the inductive effect of the multiple
layers. More expensive, solid dielectric microwave
porcelain/ceramic capacitors are available up to
1000pF with resonant frequencies beyond 20GHz. In all
types, resonant frequency depends on capacitor value,
voltage rating, and physical size; the larger the capaci-
tor, the lower the resonant frequency.
We recommend ceramic surface-mount/chip capaci-
tors. Placement of bypass capacitors on the PC board
is critical, and the smaller chip capacitors allow place-
ment as close to the part as practical. The smaller,
higher frequency capacitors should be placed as close
to the chip as possible, with the higher-value capaci-
tors placed farther away.
Creating Large Arrays
The MAX4141 was designed as a building block for
large arrays. The high-power drive required for internal
cable drivers has a negative effect on crosstalk and
increases system power consumption. Figure 1 shows
an 8x1 multiplexer circuit.
Even though the MAX4141 drives capacitive loads, you
may want to limit the number of switches connected
together to maximize bandwidth. The MAX4141 has a
finite input capacitance of about 3pF and a dynamic
output resistance of about 20
. This causes a pole at a
little more than 2.6GHz. However, in a large array with
many switch inputs, the total capacitance is (N x 3pF),
where “N” is the number of switches connected in par-
allel. The pole will be located at:
where C
STRAY
is the stray capacitance from the inter-
connect.
If the maximum number of switches that may be con-
nected while still maintaining bandwidth is less than
your system requirements, use a unity-gain buffer
amplifier to isolate the switch from the remainder of the
inputs.
Table 1. Truth Table
1
C
2
N
(
3pF
20
MHz
STRAY
π ×
×
+
)
×
M
330MHz, 4x1 Prec ision Video Multiplexer
_______________________________________________________________________________________
7
A1
X
0
0
1
1
A0
X
0
1
0
1
EN
0
1
1
1
1
OUT
High-Z
IN0
IN1
IN2
IN3
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4141CSD+ | 功能描述:視頻開關(guān) IC RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:4 開啟電阻（最大值）:12 Ohms 傳播延遲時間: 開啟時間（最大值）: 關(guān)閉時間（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 |
| MAX4141CSD+T | 功能描述:視頻開關(guān) IC RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:4 開啟電阻（最大值）:12 Ohms 傳播延遲時間: 開啟時間（最大值）: 關(guān)閉時間（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 |
| MAX4141CSD-T | 功能描述:視頻開關(guān) IC RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:4 開啟電阻（最大值）:12 Ohms 傳播延遲時間: 開啟時間（最大值）: 關(guān)閉時間（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 |
| MAX4141EVKIT | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Evaluation Kit for the MAX4141 |
| MAX4141EVKIT-SO | 功能描述:視頻 IC 開發(fā)工具 RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Boards 類型:YPbPr to RGBHV Converters 工具用于評估:LMH1251 工作電源電壓:5 V |
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