ISL8391IB - 4-Channel 35Ω SPST Analog Switch | Renesas
料号： ISL8391IB ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
ISL8391IB 概述
An analog switch is an electronically controlled interface that connects or disconnects an analog signal path. The SPST designation means each channel has one pole and one throw, while quad indicates four switching elements in one package. This device sits between sensors, amplifiers, data converters, test equipment, and other signal-chain circuits where a control signal must route a voltage without continuously conducting it. Its CMOS implementation supports low static power and high input impedance.
Key features include four independent channels, 35 Ω on-resistance, low leakage, and operation from either single or dual supplies. The single-supply range is +2 V to +12 V, while the dual-supply range is ±2 V to ±6 V. These values allow use in battery-powered equipment and low-voltage instrumentation. The device is identified as a 16-SOIC, surface-mount interface IC.
The four-channel architecture reduces the number of discrete switch components required in multiplexed or reconfigurable analog paths. Its low power consumption is useful when battery life is important, while low leakage helps preserve signal amplitude in high-impedance nodes. Fast switching makes the device relevant to measurement, control, and signal-routing systems, although exact switching-time limits and logic thresholds require confirmation from the manufacturer datasheet.
Typical applications include battery-powered instrumentation, automated test equipment, data acquisition, sensor interfaces, audio and communications signal routing, and industrial control systems. The ISL8391IB is especially relevant when a designer needs four SPST paths in one 16-SOIC package and can operate the device from a low-voltage single or dual supply.
Designers should verify the control-pin polarity, allowable analog signal range, absolute maximum ratings, and switching-time parameters against the manufacturer datasheet before layout. Keep routing short, provide a solid ground reference, and account for the 35 Ω on-resistance when designing source and load impedances.
This page combines verified manufacturer-product information, distributor identification, package data, and practical selection guidance. It distinguishes documented values from parameters requiring verification and avoids presenting unreferenced electrical or timing specifications as established facts.
ISL8391IB 最大额定值与电气特性
| Product Type | Quad SPST CMOS analog switch |
| Number of Circuits | 4 |
| Switch Configuration | 1:1 SPST |
| On-Resistance | 35 ohm |
| Single-Supply Operating Range | +2 V to +12 V |
| Dual-Supply Operating Range | +/-2 V to +/-6 V |
| Low Power Consumption | <1 microW |
| Leakage Current | 2.5 nA maximum |
| Switching Type | Fast switching |
| 封装 | 16-SOIC |
| 安装类型 | Surface mount |
| Process Technology | CMOS |
ISL8391IB 16-soic 引脚配置指南
ISL8391IB（16-soic 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： ISL8391IB.
请参阅 数据手册 以查看完整引脚配置。
典型应用
ISL8391IB 适用于 6 应用s: Battery-Powered Sensor Interfaces, Automated Test Equipment, Data-Acquisition Systems, Low-Voltage Audio Signal Routing, Communications and RF Control Paths, Industrial Control and Signal Isolation.
Battery-Powered Sensor Interfaces
The ISL8391IB fits battery-powered sensor interfaces because its four SPST channels can route related measurement paths while the verified device description emphasizes low power consumption below 1 µW and leakage current up to 2.5 nA. A designer could use the switches to isolate sensor branches, connect a shared analog front end, or select between excitation and measurement lines. The 35 Ω on-resistance must be included in the impedance budget for high-impedance sensors, while the +2 V to +12 V single-supply range supports low-voltage systems. Confirm control levels and signal limits in the datasheet before finalizing the battery design.
推荐
Automated Test Equipment
The ISL8391IB is suitable for automated test equipment when a fixture needs four independently controlled SPST paths. Its fast-switching characterization allows the part to be considered for routing DUT connections, selecting test configurations, and isolating measurement channels. The documented 35 Ω on-resistance is acceptable only after checking the source impedance, load, bandwidth, and required insertion loss. Four channels in one 16-SOIC package can simplify control and reduce discrete switch count. For high-voltage or high-speed fixtures, verify the absolute maximum ratings and switching-time limits, which are not provided in the supplied web snippets.
推荐
Data-Acquisition Systems
The ISL8391IB can organize low-voltage data-acquisition signal paths by selecting among sensors, reference nodes, or amplifier inputs through four SPST channels. Its low leakage specification of 2.5 nA maximum is useful when the acquisition front end presents a high source impedance, while low power consumption below 1 µW helps when the system is portable. The 35 Ω switch resistance may reduce signal amplitude, so the complete source impedance and ADC input network should be evaluated. Use short PCB traces and a stable ground plane to preserve measurement accuracy, and verify the control polarity and settling behavior from the manufacturer documentation.
推荐
Low-Voltage Audio Signal Routing
The ISL8391IB may be used for low-voltage audio signal routing when four SPST paths are sufficient and the system operates within the verified supply range. The 35 Ω on-resistance can be compared directly against the input impedance of the next audio stage, while the low-leakage characteristic helps avoid unnecessary loading. Single-supply operation from +2 V to +12 V is useful for compact portable equipment, although dual-supply operation from ±2 V to ±6 V can simplify bipolar signal handling. Audio designs should also evaluate crosstalk, off-isolation, bandwidth, and distortion; those parameters require confirmation from the complete manufacturer datasheet.
推荐
Communications and RF Control Paths
The ISL8391IB can serve as a low-voltage control-path switch in communications equipment where four low-leakage SPST channels are needed for routing or isolation. The verified +2 V to +12 V single-supply range and ±2 V to ±6 V dual-supply range make it relevant to compact signal-chain systems, but it should not be assumed suitable for RF-frequency operation without bandwidth, capacitance, isolation, and impedance data. The 35 Ω on-resistance may be significant at the intended interface. Use short controlled-impedance routing where applicable and verify RF performance from the manufacturer test data rather than extrapolating from the low-voltage description.
推荐
Industrial Control and Signal Isolation
The ISL8391IB is applicable to industrial control boards that need to route or isolate low-voltage analog signals with a compact quad switch. Four SPST channels can provide configurable test points, sensor selection, actuator feedback paths, or signal-ground isolation within the system's allowed voltage limits. Its low power consumption and low leakage help when the controller operates from a constrained supply, but industrial temperature, transient, and isolation requirements must be verified separately. The 16-SOIC footprint simplifies assembly, while the 35 Ω resistance should be included in the control-loop impedance calculation. Confirm surge, noise, and absolute-maximum requirements before deployment.
推荐
推荐产品汇总
工程参考数据： ISL8391IB ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 |
|---|---|
| Package | 16-SOIC |
| Brand | Renesas Electronics |
| Number of Circuits | 4 |
| Switch Configuration | 1:1 SPST |
| On-Resistance | 35 ohm |
| Single-Supply Range | +2 V to +12 V |
| Dual-Supply Range | +/-2 V to +/-6 V |
| Power Consumption | <1 microW |
| Leakage Current | 2.5 nA maximum |
关键差异点
- Four independent SPST channels in one package （对比 Typical single-channel analog switch)
- Low-voltage supply flexibility （对比 Single-supply-only low-voltage switch)
- Low power and leakage characteristics （对比 Higher-power generic analog switch)
设计说明
Include the documented 35 Ω on-resistance when selecting the source and load impedances around each switched channel. For high-impedance sensors, even a modest switch resistance can create an attenuation ratio and can interact with input capacitance. Keep switched traces short, use a continuous ground reference, and place any series or termination resistors according to the complete signal-path impedance calculation. Verify settling behavior against the required measurement or control bandwidth.
The verified family description states power consumption below 1 µW and leakage current up to 2.5 nA, but those figures should be used as design context rather than a complete power budget. Confirm the actual supply voltage, control state, load, and datasheet test conditions. Place the required bypass capacitors close to the supply pins using the manufacturer's layout recommendation, and ensure the power source can tolerate the transient current produced when a channel changes state.
Use the 16-SOIC package with attention to analog-signal routing and control-signal isolation. Keep the four switched paths physically separated where crosstalk or pickup matters, route control traces away from sensitive nodes, and avoid long loops around the device. Because the supplied verified data does not include pin-level assignments, use the official datasheet for the footprint, pin numbering, exposed connections, and recommended decoupling arrangement before PCB release.
Do not treat the family description as a substitute for the complete electrical rating. In particular, confirm control thresholds, allowable analog signal voltage, absolute maximum ratings, switching time, off-isolation, charge injection, and operating temperature before applying the switch to a new rail or fixture. Also do not assume that a similar quad analog switch is pin-compatible merely because it is also a 16-SOIC device; compare the actual pinout and control polarity.
合规信息
The supplied verified snippets identify the device and its electrical/packaging characteristics but do not provide verified RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification statements. AEC-Q100 is not applicable unless an automotive-qualified variant is separately identified and documented.