ISL8499IV - Ultra Low ON-Resistance Quad SPDT Switch | Renesas
MPN: ISL8499IV ✓ Hoạt độngISL8499IV Tóm tắt
Bộ thay thế dễ dàng lắp đặt cho ISL8499IV — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
ISL8499IVZ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
DG2799
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
STG3699
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ISL8499IV Tỷ lệ tối đa & tính chất điện
| Product Type | Quad SPDT (Dual DPDT) analog switch |
| Supply Voltage Range | +1.65 V to +4.5 V |
| ON Resistance at +4.3 V | 0.24 Ohm |
| ON Resistance at +3.0 V | 0.26 Ohm |
| ON Resistance at +1.8 V | 0.45 Ohm |
| Distributor Rated ON Resistance | 250 mOhm |
| ON Resistance Matching Between Channels | 0.04 Ohm |
| ON Resistance Flatness Across Signal Range | 0.05 Ohm |
| Turn-On Time | 15 ns |
| Turn-Off Time | 13 ns |
| Logic Input Compatibility | 1.8 V logic-compatible with a single +3 V supply |
| Signal Direction | Bidirectional |
| Number of Circuits | 4 |
| Switch Configuration | 2:1 |
| Hộp | 16-TSSOP, 0.173 in x 4.40 mm width package |
| Kiểu lắp đặt | Surface mount |
| Power Consumption | Less than 0.2 uW |
Hướng dẫn cấu hình chân ISL8499IV 16-tssop, 0.173 in x 4.40 mm width package
Cấu hình chân cho ISL8499IV (16-tssop, 0.173 in x 4.40 mm width package 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 ISL8499IV.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
ISL8499IV phù hợp cho 6 Áp dụngs: Battery-Powered Analog Signal Routing, Portable Measurement and Sensor Multiplexing, Low-Voltage Communication Signal Switching, Test and Measurement Signal Multiplexing, Data Acquisition and Mixed-Signal Systems, Embedded Audio and Control Routing.
Battery-Powered Analog Signal Routing
The ISL8499IV fits low-voltage battery-powered systems because it operates from +1.65 V to +4.5 V and has a listed power consumption below 0.2 uW. Its Quad SPDT topology can route signals among multiple sources and loads without requiring four separate switch packages. The bidirectional configuration is useful when either the source or destination side must operate as the active endpoint. At +1.8 V, the ON resistance rises to 0.45 Ohm, so engineers should include that resistance in the complete signal-path budget. The 15 ns turn-on and 13 ns turn-off values support fast control sequences where the analog signal itself remains within the device's verified voltage limits.
Được đề xuất
Portable Measurement and Sensor Multiplexing
The ISL8499IV is appropriate for compact sensor and measurement front ends that must select several analog channels with a common supply. Its 16-TSSOP package supports dense PCB layouts, while four 2:1 switch circuits provide flexible channel selection. The specified ON resistance is 0.24 Ohm at +4.3 V, 0.26 Ohm at +3.0 V, and 0.45 Ohm at +1.8 V. These values must be combined with sensor output impedance, ADC input capacitance, and the required settling time. Its 13 ns turn-off and 15 ns turn-on times make it practical for rapid scans, although leakage, bandwidth, charge injection, and signal settling remain important validation items.
Được đề xuất
Low-Voltage Communication Signal Switching
The ISL8499IV can route low-voltage communication signals when the designer needs a bidirectional switch with fast transition performance. The Quad SPDT arrangement provides two independently controlled switching sections, and the operating range of +1.65 V to +4.5 V supports single-supply portable systems. The +4.3 V ON-resistance value of 0.24 Ohm can limit insertion loss in moderate-impedance paths, but the signal amplitude, bandwidth, and source impedance determine the practical performance. Logic control is compatible with 1.8 V when the device is operated from +3 V, making the switch suitable for mixed-voltage mobile and embedded interfaces after timing and signal-integrity checks.
Được đề xuất
Test and Measurement Signal Multiplexing
The ISL8499IV is suitable for low-voltage test and measurement paths that require compact bidirectional routing between an instrument and several DUT nodes. Its 15 ns turn-on and 13 ns turn-off times support controlled switching sequences, while channel ON-resistance matching of 0.04 Ohm helps reduce path-to-path variation. ON-resistance flatness is listed as 0.05 Ohm across the signal range. For precision measurements, engineers should still include switch leakage, off-impedance, charge injection, channel isolation, and input capacitance in the uncertainty budget. The 16-TSSOP package also makes the device suitable for dense, multi-channel test fixtures.
Được đề xuất
Data Acquisition and Mixed-Signal Systems
The ISL8499IV can support analog multiplexing in compact data-acquisition systems where multiple sensor or conditioning outputs must feed a shared converter. Its Quad SPDT structure reduces the number of discrete routing devices, and the 0.26 Ohm ON resistance at +3.0 V is a useful starting point for loss budgeting. Fast switching helps shorten acquisition-cycle dead time, but successful use requires sufficient settling time before conversion. Designers should verify the ADC input range, sampling rate, switch capacitance, logic thresholds, and power-supply noise. In systems using a +3 V rail, the documented 1.8 V logic compatibility enables direct control from suitable low-voltage digital circuitry.
Được đề xuất
Embedded Audio and Control Routing
The ISL8499IV can be used in embedded audio, control, and general-purpose analog routing where multiple low-voltage nodes must be selected by a compact switch. Its bidirectional Quad SPDT implementation permits flexible signal-path direction, and the low 0.2 uW maximum power-consumption figure is beneficial in compact embedded equipment. The switch should be used only within its verified analog signal range, and designers must account for ON resistance, off leakage, and crosstalk. For audio or control paths sensitive to noise, supply decoupling and grounding should be evaluated together with the control-signal timing. The 16-TSSOP package simplifies replacement planning when a verified drop-in option is required.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ISL8499IV — 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 | ISL8499IVZ | DG2799 | STG3699 |
|---|---|---|---|---|
| Package | 16-TSSOP | 16-TSSOP | 16-TSSOP | 16-TSSOP |
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | STMicroelectronics |
| Product Type | Quad SPDT (Dual DPDT) analog switch | Quad SPDT analog switch | Pin-compatible drop-in replacement; detailed type not supplied | Pin-compatible drop-in replacement; detailed type not supplied |
| Drop-In Status | Original device | Identical terminals, package, and consistent main performance characteristics | Explicitly identified as pin-compatible drop-in replacement | Explicitly identified as pin-compatible drop-in replacement |
Bảo phân biệt quan trọng
- Documented low-voltage ON-resistance performance (vsDG2799)
- Fast switching performance for compact routing systems (vsSTG3699)
- Low channel variation and signal-range flatness (vsISL8499IVZ)
- Verified explicit drop-in sourcing options (vsISL8499IVZ)
Ghi chú thiết kế
Include the switched-path resistance in the complete source, switch, and load budget. The supplied data specifies 0.24 Ohm at +4.3 V, 0.26 Ohm at +3.0 V, and 0.45 Ohm at +1.8 V, with 0.04 Ohm channel matching and 0.05 Ohm flatness across the signal range. For high-impedance sensors, capacitance, leakage, and settling can dominate the error, so validate the complete signal path rather than relying only on the nominal ON resistance.
Keep the analog supply within +1.65 V to +4.5 V and use the documented +3 V condition when relying on 1.8 V logic compatibility. Place the supply bypass capacitor close to the device's supply and ground pins, and provide a low-impedance return path for the control inputs. The listed power consumption is below 0.2 uW, but actual system consumption also includes control-driver transitions and leakage, which should be checked under the intended signal state.
Do not assume that a 15 ns turn-on time guarantees a 15 ns usable settling time. Switching capacitance, source impedance, load capacitance, bandwidth, leakage, and charge injection determine when the analog output is valid. In measurement systems, allow the complete acquisition chain to settle before sampling. Verify the signal amplitude and polarity against the device's absolute maximum and recommended operating conditions in the current Renesas datasheet.
The 16-TSSOP package supports compact layouts, but analog switches should be positioned to minimize trace length between the switch pins and sensitive nodes. Route each switched signal with a continuous reference plane, avoid sharing return-current paths with digital control signals, and inspect crosstalk and off-state leakage using the actual PCB stack-up. The TSSOP package dimensions and pin numbering must be taken from the current manufacturer drawing before land-pattern release.
Thông tin tuân thủ
The supplied verified snippets do not explicitly state RoHS, REACH, halogen-free, lead-free, or conflict-minerals status. AEC-Q100 is treated as not applicable because this product is an analog interface IC rather than an automotive-qualified device in the supplied data.
