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參數(shù)資料
| 型號： | ISL54057 |
| 廠商： | Intersil Corporation |
| 英文描述： | Ultra Low ON-Resistance, Low-Voltage, Single Supply, Differential 4 to 1 Analog Multiplexer(超低導通電阻, 低電壓, 單電源, 差分4合1模擬開關) |
| 中文描述： | 超低導通電阻，低電壓，單電源，差分4到1模擬多路復用器（超低導通電阻，低電壓，單電源，差分4合1模擬開關） |
| 文件頁數(shù)： | 7/10頁 |
| 文件大?。?/td> | 265K |
| 代理商： | ISL54057 |
7
FN6379.0
September 29, 2006
Detailed Description
The ISL54057 analog switch offer precise switching
capability from a single 1.6V to 3.6V supply with low
on-resistance (0.41
) and high speed operation
(t
ON
= 27ns, t
OFF
= 18ns). The devices are especially well
suited to portable battery powered equipment thanks to the
low operating supply voltage (1.6V), low power consumption
(0.17
μ
W), low leakage currents (60nA max)
, and the tiny
μ
TQFN package. The ultra low on-resistance and Ron
flatness provide very low insertion loss and distortion to
applications that require signal reproduction.
Supply Sequencing And Overvoltage Protection
With any CMOS device, proper power supply sequencing is
required to protect the device from excessive input currents
which might permanently damage the IC. All I/O pins contain
ESD protection diodes from the pin to V+ and to GND (see
Figure 7). To prevent forward biasing these diodes, V+ must
be applied before any input signals, and the input signal
voltages must remain between V+ and GND.
If these conditions cannot be guaranteed, then precautions
must be implemented to prohibit the current and voltage at
the logic pin and signal pins from exceeding the maximum
ratings of the switch. The following two methods can be used
to provided additional protection to limit the current in the
event that the voltage at a signal pin or logic pin goes below
ground or above the V+ rail.
Logic inputs can be protected by adding a 1k
resistor in
series with the logic input (see Figure 7). The resistor limits
the input current below the threshold that produces
permanent damage, and the sub-microamp input current
produces an insignificant voltage drop during normal
operation.
This method is not acceptable for the signal path inputs.
Adding a series resistor to the switch input defeats the
purpose of using a low R
ON
switch. Connecting schottky
diodes to the signal pins as shown in Figure 7 will shunt the
fault current to the supply or to ground thereby protecting the
switch. These schottky diodes must be sized to handle the
expected fault current.
FIGURE 5. CROSSTALK TEST CIRCUIT
FIGURE 6. CAPACITANCE TEST CIRCUIT
Test Circuits and Waveforms
(Continued)
0V or V+
ANALYZER
A
x
SIGNAL
GENERATOR
R
L
GND
ADD1
ADD0
50
N.C.
COM
B
B
x
V+
C
COM
A
Crosstalk is measured between adjacent channels with one channel
ON and the other channel OFF.
Signal direction through switch is reversed and worst case values
are recorded.
Channel
Select
INH
GND
Ax or Bx
COMA or COMB
ADD1
ADD0
IMPEDANCE
ANALYZER
0V or V+
V+
C
Channel
Select
INH
FIGURE 7. OVERVOLTAGE PROTECTION
GND
V
COMX
Ax or Bx
V+
Ior
OPTIONAL
PROTECTION
RESISTOR
OPTIONAL
SCHOTTKY
DIODE
OPTIONAL
SCHOTTKY
DIODE
ADD
X
ISL54057
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| ISL54057IRUZ-T | 功能描述:IC SWITCH 4X1 16UTQFN RoHS:是 類別:集成電路 (IC) >> 接口 - 模擬開關，多路復用器，多路分解器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:36 系列:- 功能:多路復用器 電路:2 x 4:1 導通狀態(tài)電阻:75 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:- 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:20-SOIC W 包裝:管件 |
| ISL54058 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Ultra Low ON-Resistance, Low-Voltage, Single Supply, Dual 4 to 1 Analog Multiplexer |
| ISL54058IRUZ-T | 功能描述:IC SWITCH DUAL 4X1 16UTQFN RoHS:是 類別:集成電路 (IC) >> 接口 - 模擬開關，多路復用器，多路分解器 系列:- 產(chǎn)品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:36 系列:- 功能:多路復用器 電路:2 x 4:1 導通狀態(tài)電阻:75 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:- 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:20-SOIC（0.295"，7.50mm 寬） 供應商設備封裝:20-SOIC W 包裝:管件 |
| ISL54059 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:+1.8V to +6.5V, Sub-Ohm, Dual SPDT Analog Switch with Negative Signal Capability |
| ISL54059_09 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:+1.8V to +6.5V, Sub-Ohm, Dual SPDT Analog Switch with Negative Signal Capability |
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