ISL8391IB - 4-Channel 35Ω SPST Analog Switch | Renesas
MPN: ISL8391IB ✓ Hoạt độngISL8391IB Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho ISL8391IB — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Không có bộ thay thế dễ dàng lắp đặt sẵn có cho sản phẩm này.
Yêu cầu các bộ thay thếISL8391IB Tỷ lệ tối đa & tính chất điện
| 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 |
| Hộp | 16-SOIC |
| Kiểu lắp đặt | Surface mount |
| Process Technology | CMOS |
Hướng dẫn cấu hình chân ISL8391IB 16-soic
Cấu hình chân cho ISL8391IB (16-soic gói). Số thứ tự chân, chức năng và sơ đồ kết nối được xác định trong tài liệu thông số kỹ thuật của nhà sản xuất. Tham khảo nó để biết footprint và hướng dẫn hàn chính xác.
Không có dữ liệu chân cụ thể sẵn có cho ISL8391IB.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
ISL8391IB phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ISL8391IB — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này |
|---|---|
| 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 |
Bảo phân biệt quan trọng
- Four independent SPST channels in one package (vsTypical single-channel analog switch)
- Low-voltage supply flexibility (vsSingle-supply-only low-voltage switch)
- Low power and leakage characteristics (vsHigher-power generic analog switch)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.