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參數(shù)資料
| 型號： | ISL43121IH-T |
| 廠商： | INTERSIL CORP |
| 元件分類： | 運動控制電子 |
| 英文描述： | Low-Voltage, Single Supply, Dual SPST, SPDT Analog Switches |
| 中文描述： | DUAL 1-CHANNEL, SGL POLE SGL THROW SWITCH, PDSO8 |
| 封裝： | PLASTIC, MO-178-BA, SC-74, SOT-23, 8 PIN |
| 文件頁數(shù)： | 8/13頁 |
| 文件大小： | 394K |
| 代理商： | ISL43121IH-T |
8
Detailed Description
The ISL43120–ISL43122 and ISL43210 bidirectional, dual
analog switches offer precise switching capability from a
single 2.7V to 12V supply with low on-resistance (19
) and
high speed operation (t
ON
= 28ns, t
OFF
= 20ns). The devices
are especially well suited to portable battery powered
equipment thanks to the low operating supply voltage (2.7V),
low power consumption (5
μ
W), low leakage currents (100pA
max), and the tiny SOT-23 packaging. High frequency
applications also benefit from the wide bandwidth, and the
very high off isolation and crosstalk rejection.
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 GND (see
Figure 8). To prevent forward biasing these diodes, V+ must
be applied before any input signals, and input signal
voltages must remain between V+ and GND. If these
conditions cannot be guaranteed, then one of the following
two protection methods should be employed.
Logic inputs can easily be protected by adding a 1k
resistor in series with the input (see Figure 8). 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.
Adding a series resistor to the switch input defeats the
purpose of using a low R
ON
switch, so two small signal
diodes can be added in series with the supply pins to provide
overvoltage protection for all pins (see Figure 8). These
additional diodes limit the analog signal from 1V below V+ to
1V above GND. The low leakage current performance is
unaffected by this approach, but the switch resistance may
increase, especially at low supply voltages.
Power-Supply Considerations
The ISL43XXX construction is typical of most CMOS analog
switches, except that they have only two supply pins: V+ and
GND. V+ and GND drive the internal CMOS switches and
set their analog voltage limits. Unlike switches with a 13V
maximum supply voltage, the ISL43XXX 15V maximum
supply voltage provides plenty of room for the 10% tolerance
of 12V supplies, as well as room for overshoot and noise
spikes.
The minimum recommended supply voltage is 2.7V. It is
important to note that the input signal range, switching times,
and on-resistance degrade at lower supply voltages. Refer
to the electrical specification tables and Typical Performance
curves for details.
FIGURE 6. CROSSTALK TEST CIRCUIT
FIGURE 7. CAPACITANCE TEST CIRCUIT
Test Circuits and Waveforms
(Continued)
0V or 2.4V
ANALYZER
V+
C
NO1 or NC1
SIGNAL
GENERATOR
R
L
GND
IN
1
COM1
IN
2
50
0V or V
INH
NC
COM2
NO2 or NC2
V+
C
GND
NO or NC
COM
IN
X
IMPEDANCE
ANALYZER
0V or V
INH
FIGURE 8. OVERVOLTAGE PROTECTION
GND
V
COM
V
NO or NC
OPTIONAL PROTECTION
DIODE
V+
IN
X
OPTIONAL PROTECTION
DIODE
OPTIONAL
PROTECTION
RESISTOR
ISL43120, ISL43121, ISL43122, ISL43210
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ISL43120IH-T | Low-Voltage, Single Supply, Dual SPST, SPDT Analog Switches |
| ISL43210IH-T | Low-Voltage, Single Supply, Dual SPST, SPDT Analog Switches |
| ISL43122IH-T | Aluminum Electrolytic Capacitor; Capacitor Type:High Temperature; Voltage Rating:400VDC; Capacitor Dielectric Material:Aluminum Electrolytic; Operating Temperature Range:-20 C to +105 C; Capacitance:4.7uF RoHS Compliant: No |
| ISL43140 | Low-Voltage, Single and Dual Supply, High Performance, Quad SPST, Analog Switches(低電壓, 單電源與雙電源, 四SPST, 高性能模擬開關(guān)) |
| ISL43141 | Low-Voltage, Single and Dual Supply, High Performance, Quad SPST, Analog Switches(低電壓, 單電源與雙電源, 四SPST, 高性能模擬開關(guān)) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISL43121IHZ-T | 功能描述:IC SWITCH DUAL SPST SOT23-8 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:2,500 系列:- 功能:視頻交叉點開關(guān) 電路:1 x 8:6 導(dǎo)通狀態(tài)電阻:- 電壓電源:單電源 電壓 - 電源，單路/雙路(±):3.135 V ~ 5.25 V 電流 - 電源:55mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:24-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:24-TSSOP 包裝:帶卷 (TR) 產(chǎn)品目錄頁面:1214 (CN2011-ZH PDF) 其它名稱:FMS6502MTC24XTR |
| ISL43122 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Low-Voltage, Single Supply, Dual SPST Analog Switches |
| ISL43122IH-T | 功能描述:IC SWITCH DUAL SPST SOT23-8 RoHS:否 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 |
| ISL43122IHZ-T | 功能描述:IC SWITCH DUAL SPST SOT23-8 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:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:36 系列:- 功能:多路復(fù)用器 電路:2 x 4:1 導(dǎo)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(yīng)商設(shè)備封裝:20-SOIC W 包裝:管件 |
| ISL43140 | 制造商:INTERSIL 制造商全稱:Intersil Corporation 功能描述:Low-Voltage, Single and Dual Supply, High Performance, Quad SPST, Analog Switches |
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