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參數(shù)資料
| 型號： | MAX4588CAI |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 運動控制電子 |
| 英文描述： | 16/32-Bit RISC Flash Microcontroller 144-LQFP |
| 中文描述： | DUAL 4-CHANNEL, VIDEO MULTIPLEXER, PDSO28 |
| 封裝： | 5.30 X 0.65 MM, SSOP-28 |
| 文件頁數(shù)： | 13/20頁 |
| 文件大?。?/td> | 306K |
| 代理商： | MAX4588CAI |
Detailed Desc ription
Logic -Level T ranslators
The MAX4588 is constructed of high-frequency “T”
switches, as shown in Figure 8. The logic-level inputs
are translated by amplifier A1 into a V+ to V- logic sig-
nal that drives amplifier A2. Amplifier A2 drives the
gates of N-channel MOSFETs N1 and N2 from V+ to V-,
turning them fully on or off. The same signal drives
inverter A3 (which drives the P-channel MOSFETs P1
and P2, turning them fully on or off) from V+ to V-, and
turns the N-channel MOSFET N3 on and off. The logic-
level threshold is determined by V
L
and GND.
S witc h On Condition
When the switch is on, MOSFETs N1, N2, P1, and P2
are on and MOSFET N3 is off (Figure 8). The signal
path is COM_ to NO_, and because both N-channel
and P-channel MOSFETs act as pure resistances, it is
symmetrical (i.e., signals may pass in either direction).
The off MOSFET, N3, has no DC conduction, but has a
small amount of capacitance to GND. The four on
MOSFETs also have capacitance to ground that,
together with the series resistance, forms a lowpass fil-
ter. All of these capacitances are distributed evenly
along the series resistance, so they act as a transmis-
sion line rather than a simple R-C filter. The MAX4588’s
construction allows an exceptional 180MHz bandwidth
when the switches are on.
Typical attenuation in 75
systems is 2.5dB and is rea-
sonably flat up to 50MHz. Higher-impedance circuits
show even lower attenuation (and vice versa), but
slightly lower bandwidth due to the increased effect of
the internal and external capacitance and the switch’s
internal resistance.
M
Low-Voltage, High-Isolation,
Dual 4-Channel RF/Video Multiplexer
______________________________________________________________________________________
13
A1
A2
A3
P1
N3
N1
V-
GND
INPUT
V
CC
V+
V+
V+
COM_
NO_
N2
P2
NORMALLY OPEN SWITCH CONSTRUCTION
ESD DIODES
ON GND, NO_,
AND COM_
t
CSS
CS
SCLK
DIN
DOUT
NOTE: ALL INPUT SIGNALS ARE SPECIFIED WITH t
R
AND t
F
< 10ns.
TIMING IS MEASURED FROM 50% OF DIGITAL SIGNAL.
t
DS
t
DH
A0
A1
A2
DISABLE
t
DO
t
CH
t
CL
t
CSH
MAX4588
Figure 7. Serial Timing Diagram
Figure 8. T-Switch Construction
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|---|---|
| MAX4588CAI+ | 功能描述:視頻開關(guān) IC Dual 4Ch RF Video MUX 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 |
| MAX4588CAI+T | 功能描述:視頻開關(guān) IC Dual 4Ch RF Video MUX 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 |
| MAX4588CAI-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 |
| MAX4588CPI | 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 |
| MAX4588CWI | 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 |
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