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参数资料
| 型号： | ISL43113 |
| 厂商： | Intersil Corporation |
| 英文描述： | Low-Voltage, Dual Supply, SPST, High Performance Analog Switches(低电压, 双电源, SPST, 高性能模拟开关) |
| 中文描述： | 低电压，双电源，聚苯乙烯，高性能模拟开关（低电压，双电源，聚苯乙烯，高性能模拟开关） |
| 文件页数： | 6/11页 |
| 文件大小： | 272K |
| 代理商： | ISL43113 |
6
Detailed Description
The ISL43112 and ISL43113 analog switches offer precise
switching capability from
±
1.5V to
±
6V supplies with low on-
resistance (15
) and high speed operation (t
ON
= 40ns,
t
OFF
= 25ns). The devices are especially well suited to
portable battery powered equipment thanks to the low
operating supply voltage (
±
1.5V), low power consumption
(250
μ
W), low leakage currents (2nA max), and the tiny
SOT-23 packaging. High frequency applications also benefit
from the wide bandwidth, and the very high off isolation.
Supply Sequencing And Overvoltage Protection
As 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
V- (see Figure 6). To prevent forward biasing these diodes,
V+ and V- must be applied before any input signals, and
input signal voltages must remain between V+ and V-. 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 6).
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 6). These
additional diodes limit the analog signal from 1V below V+ to
1V above V-. 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 ISL4311X construction is typical of most CMOS analog
switches, except that there are only two supply pins: V+ and
V-. The power supplies need not be symmetrical for useful
operation. As long as the total supply voltage (V+ to V-,
including supply tolerances, overshoot, and noise spikes) is
less than the 15V maximum supply rating, and the digital
input switching point remains reasonable (see “Logic-Level
Thresholds” section), the ISL43112/13 function well. The
15V maximum supply rating provides the designer of 12V
systems much greater flexibility than switches with a 13V
maximum supply voltage.
The minimum recommended supply voltage is
±
1.5V. It is
important to note that the input signal range, switching times,
and on-resistance degrade at lower supply voltages, and the
digital input V
IL
becomes negative at V
S
≤ ±
2V. Refer to the
“Typical Performance” curves for details.
V+ and V- power the internal CMOS switches and set their
analog voltage limits. These supplies also power the internal
logic and level shifters. The level shifters convert the input
logic levels to switched V+ and V- signals to drive the analog
switch gate terminals.
This family of switches is not recommended for single supply
applications. For single supply, similar performance, pin
FIGURE 5. CAPACITANCE TEST CIRCUIT
Test Circuits and Waveforms
(Continued)
V+
NO or NC
COM
IN
IMPEDANCE
ANALYZER
V- or V+
V-
FIGURE 6. OVERVOLTAGE PROTECTION
V-
V
COM
V
NO or NC
OPTIONAL PROTECTION
DIODE
V+
IN
OPTIONAL PROTECTION
DIODE
OPTIONAL
PROTECTION
RESISTOR
ISL43112, ISL43113
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL43113IB | 功能描述:模拟开关 IC SPST NC RoHS:否 制造商:Texas Instruments 开关数量:2 开关配置:SPDT 开启电阻（最大值）:0.1 Ohms 切换电压（最大）: 开启时间（最大值）: 关闭时间（最大值）: 工作电源电压:2.7 V to 4.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:DSBGA-16 |
| ISL43113IB-T | 功能描述:IC SWITCH SPST 8SOIC RoHS:否 类别:集成电路 (IC) >> 接口 - 模拟开关，多路复用器，多路分解器 系列:- 标准包装:48 系列:- 功能:开关 电路:4 x SPST - NO 导通状态电阻:100 欧姆 电压电源:单/双电源 电压 - 电源，单路/双路(±):2 V ~ 12 V，±2 V ~ 6 V 电流 - 电源:50nA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:管件 |
| ISL43113IBZ | 功能描述:IC SWITCH SPST 8SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 模拟开关，多路复用器，多路分解器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:36 系列:- 功能:多路复用器 电路:2 x 4:1 导通状态电阻:75 欧姆 电压电源:单/双电源 电压 - 电源，单路/双路(±):2 V ~ 12 V，±2 V ~ 6 V 电流 - 电源:- 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:20-SOIC（0.295"，7.50mm 宽） 供应商设备封装:20-SOIC W 包装:管件 |
| ISL43113IBZ-T | 功能描述:IC SWITCH SPST 8SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 模拟开关，多路复用器，多路分解器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:36 系列:- 功能:多路复用器 电路:2 x 4:1 导通状态电阻:75 欧姆 电压电源:单/双电源 电压 - 电源，单路/双路(±):2 V ~ 12 V，±2 V ~ 6 V 电流 - 电源:- 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:20-SOIC（0.295"，7.50mm 宽） 供应商设备封装:20-SOIC W 包装:管件 |
| ISL43113IH-T | 功能描述:IC SWITCH SPST SOT23-5 RoHS:否 类别:集成电路 (IC) >> 接口 - 模拟开关，多路复用器，多路分解器 系列:- 标准包装:48 系列:- 功能:开关 电路:4 x SPST - NO 导通状态电阻:100 欧姆 电压电源:单/双电源 电压 - 电源，单路/双路(±):2 V ~ 12 V，±2 V ~ 6 V 电流 - 电源:50nA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC 包装:管件 |
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