LTC202CJ - Micropower Quad CMOS Analog Switch | Analog Devices
MPN: LTC202CJ ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.39 | $3.39 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
LTC202CJ Overview
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.
Drop-in alternatives for LTC202CJ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
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Request AlternativesLTC202CJ Maximum Ratings & Electrical Characteristics
| 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 |
| Package | 16-pin CERDIP |
| Package Type | Ceramic dual in-line package |
| Mounting Type | Through-hole |
| Application Category | Analog switch, multiplexer, demultiplexer |
| Power Class | Micropower operation |
LTC202CJ ceramic dual in-line package Pin Configuration Guide
Pin configuration for LTC202CJ (ceramic dual in-line package package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for LTC202CJ.
Refer to the datasheet for full pin configuration.
Typical Applications
LTC202CJ is suitable for 7 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for LTC202CJ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product |
|---|---|
| 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 |
Key Differentiators
- Confirmed micropower positioning (vs LTC201A)
- Low-charge-injection signal switching (vs LTC203)
- Guaranteed break-before-make behavior (vs LTC201A)
- Legacy-compatible ceramic through-hole package (vs Surface-mount analog switches)
Design Notes
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.
Compliance Information
The supplied verified data does not state compliance declarations for LTC202CJ. Compliance status must be confirmed with Analog Devices or an authorized distributor.
