LTC202CJ - Micropower Quad CMOS Analog Switch | Analog Devices
MPN: LTC202CJ ✗ Cuối đờiLTC202CJ Tóm tắt
What is an analog switch? An analog switch is an integrated semiconductor switch that routes electrical signals between terminals under digital control. A quad CMOS analog switch contains four switch elements, generally allowing several analog sources to be selected or routed to a common output. The LTC202CJ belongs to the analog-switch hierarchy, which includes multiplexers, demultiplexers, and interface ICs used to connect sensors, converters, test equipment, and other signal-chain circuits.
According to the manufacturer product page and identified datasheet family, key features include micropower operation, low charge injection, low on-resistance, low leakage, guaranteed break-before-make behavior, and a latch-resistant design. These characteristics make the device suitable for precision analog systems where switching transients, signal attenuation, and power consumption can affect measurement quality. The available data also identifies the LTC202 as a quad CMOS analog-switch family; exact electrical limits and temperature-grade details require the manufacturer datasheet.
The CJ package suffix denotes the 16-pin CERDIP package identified in the verified distributor data. Ceramic-DIP construction is commonly used where temperature robustness, mechanical reliability, or legacy industrial and military compatibility matters. The package requires through-hole board layout rather than a surface-mount footprint, so designers should confirm PCB compatibility before substituting or upgrading this part.
Typical applications include precision signal selection, instrumentation multiplexing, test and measurement systems, data-acquisition front ends, sample-and-hold signal paths, and low-power analog control systems. The low charge injection helps reduce switching errors in sampled signals, while the low-leakage characteristic supports preserving small signal levels between selection events.
For new designs, engineers should verify absolute maximum ratings, recommended supply voltages, on-resistance, charge injection, leakage current, switching time, and electrical performance across temperature using the manufacturer datasheet. A footprint-compatible replacement must also preserve the 16-pin CERDIP pinout and the same enable and control logic.
This page summarizes verified distributor and manufacturer information and separates confirmed facts from parameters requiring datasheet review.
Bộ thay thế dễ dàng lắp đặt cho LTC202CJ — 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 thếLTC202CJ Tỷ lệ tối đa & tính chất điện
| Product Type | Quad CMOS analog switch |
| Number of Switches | 4 |
| Supply Operation | Single or ±15 V |
| Switch Design | CMOS analog switch |
| Charge Injection | Low charge injection |
| On-Resistance | Low RON |
| Leakage Current | Low leakage |
| Switching Sequence | Guaranteed break-before-make |
| Latch Resistance | Latch-resistant design |
| Hộp | 16-pin CERDIP |
| Package Type | Ceramic dual in-line package |
| Kiểu lắp đặt | Through-hole |
| Application Category | Analog switch, multiplexer, demultiplexer |
| Power Class | Micropower operation |
Hướng dẫn cấu hình chân LTC202CJ ceramic dual in-line package
Cấu hình chân cho LTC202CJ (ceramic dual in-line 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 LTC202CJ.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
LTC202CJ phù hợp cho 7 Áp dụngs: Precision Signal Multiplexing, Precision Data Acquisition, Test and Measurement Systems, Sensor Signal Conditioning, Sample-and-Hold Signal Paths, Industrial Analog Control Interfaces, Low-Power Measurement Front Ends.
Precision Signal Multiplexing
The LTC202CJ fits precision signal multiplexing when a system must route several analog inputs into a shared downstream converter or measurement channel. Its quad architecture provides four controlled switch elements, while the verified low-charge-injection and low-leakage characteristics help preserve small signals between selections. The device can be used with single or ±15 V operation according to the family data. Designers should place the switch close to the signal source, keep control traces away from sensitive analog nodes, and confirm that signal amplitudes remain within the manufacturer limits.
Được đề xuất
Precision Data Acquisition
The LTC202CJ is appropriate for data-acquisition front ends where a sampled sensor or conditioned analog signal must be connected to a common analog-to-digital path. Micropower operation supports systems where every milliamp of supply demand matters, and low charge injection reduces timing-dependent errors at the switching event. Low leakage is useful when the selected source has a high source impedance. The circuit should include suitable settling time, source-impedance analysis, and input protection before the switch enters the signal chain.
Được đề xuất
Test and Measurement Systems
The LTC202CJ can be used in test and measurement equipment to route calibration signals, reference nodes, or instrument channels through a controlled analog path. The ceramic CERDIP package provides a through-hole construction often useful in robust legacy or industrial test fixtures, while the quad switch organization reduces the number of separate routing devices required. The verified family description confirms micropower operation and low leakage, but bandwidth and switching-speed requirements must be checked from the exact datasheet before selecting it for high-frequency instrumentation.
Được đề xuất
Sensor Signal Conditioning
The LTC202CJ is suitable for sensor signal conditioning when a low-level analog output must be selected from multiple sources or isolated during a measurement cycle. Low leakage can help preserve high-impedance sensor outputs, while low charge injection reduces the disturbance introduced during switching. Use suitable input filtering and guard techniques around the selected source, and verify that the sensor output does not exceed the absolute maximum and recommended signal ranges. The part is better suited to precision, low-power routing than to unspecified high-bandwidth switching.
Được đề xuất
Sample-and-Hold Signal Paths
The LTC202CJ can support sample-and-hold architectures where analog signals are routed before being captured by a downstream sampling circuit. Its low charge injection is useful when the timing of the switching event matters, while guaranteed break-before-make behavior helps prevent two paths from being connected unintentionally. The circuit designer must account for switch on-resistance, source impedance, capacitor settling, and switch leakage. The available verified data does not specify switching time, so high-speed applications require direct confirmation from the manufacturer datasheet.
Được đề xuất
Industrial Analog Control Interfaces
The LTC202CJ is suitable for industrial analog-control interfaces where low-power CMOS switching, low leakage, and controlled break-before-make behavior are useful. The through-hole CERDIP package can be advantageous in equipment designed for mechanical robustness and serviceable through-hole assembly. Industrial deployments should still verify the exact operating-temperature range, supply tolerances, isolation strategy, and environmental qualification because those values are not supplied in the verified snippets. Use transient protection and controlled state sequencing around the switch nodes.
Được đề xuất
Low-Power Measurement Front Ends
The LTC202CJ can be used in low-power measurement front ends when the design must minimize switching-path power consumption while maintaining low leakage and controlled analog behavior. Micropower operation is especially useful in portable instruments, battery-powered test equipment, and distributed monitoring systems. The four switch elements can organize channel selection without requiring four separate discrete packages, provided the control signals and supply rails meet the exact operating requirements. Validate source settling, capacitor leakage, and ground-return layout in the final prototype.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LTC202CJ — 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-pin CERDIP |
| Brand | Analog Devices |
| Product Type | Quad CMOS analog switch |
| Number of Switches | 4 |
| Supply Operation | Single or ±15 V |
| Charge Injection | Low charge injection; numeric value unavailable |
| On-Resistance | Low RON; numeric value unavailable |
| Leakage | Low leakage; numeric value unavailable |
| Switching Sequence | Guaranteed break-before-make |
| Lifecycle Status | PRODUCTION according to manufacturer page |
Bảo phân biệt quan trọng
- Confirmed micropower positioning (vsLTC201A)
- Low-charge-injection signal switching (vsLTC203)
- Guaranteed break-before-make behavior (vsLTC201A)
- Legacy-compatible ceramic through-hole package (vsSurface-mount analog switches)
Ghi chú thiết kế
Keep analog switch traces short and place the LTC202CJ close to the signal source or the first receiving buffer. Control inputs should be routed away from sensitive analog nodes to reduce capacitive coupling from switching edges. For high-impedance sources, verify leakage and input capacitance against the actual source impedance and acquisition settling requirements.
The LTC202CJ uses a 16-pin CERDIP package, so the PCB must provide the correct through-hole footprint, pin numbering, and adequate clearance. Do not substitute a surface-mount footprint solely because another analog switch has similar functional specifications. Verify mechanical drawing, pin orientation, and soldering profile against the manufacturer package documentation.
Do not assume that the LTC201A, LTC202, and LTC203 family members are automatically interchangeable. Shared family naming does not prove identical pinout, control polarity, supply range, or electrical limits. Before replacement, compare the manufacturer ordering tables and complete datasheet specifications for the exact package and temperature grade.
Thông tin tuân thủ
The supplied verified data does not state compliance declarations for LTC202CJ. Compliance status must be confirmed with Analog Devices or an authorized distributor.
