INDUSTRY COMPONENT

Analog Multiplexer (MUX)

Analog multiplexer (MUX) is an electronic component that selects and routes multiple analog input signals to a single output channel in industrial control systems.

Component Specifications

Definition
An analog multiplexer is a solid-state electronic switching device used in industrial automation to sequentially connect multiple analog input signals (such as voltage or current from sensors) to a single analog-to-digital converter (ADC) or processing unit. It functions as a multi-position switch controlled by digital address lines, enabling efficient signal acquisition in data acquisition systems by reducing the number of required ADCs and simplifying wiring.
Working Principle
The analog multiplexer operates by using digital control signals to select one of several analog input channels. Internally, it contains an array of electronic switches (typically MOSFET or CMOS transistors) that connect the selected input to a common output line. When a specific binary address is applied to the control pins, the corresponding switch closes, allowing the analog signal from that channel to pass through while other channels remain isolated, preventing signal interference.
Materials
Semiconductor silicon substrate with CMOS or MOSFET technology, encapsulated in plastic (e.g., epoxy resin) or ceramic packages with gold or copper lead frames for electrical connections.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Bandwidth1MHz to 100MHz
Power Supply±5V to ±15V
Channel Count4 to 16 channels typical
On Resistance50Ω to 200Ω
Switching Time100ns to 500ns
Input Voltage Range±10V to ±15V
Operating Temperature-40°C to +85°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards
ISO 9001, IEC 60747, JEDEC JESD22

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Signal crosstalk between channels
  • Increased on-resistance affecting accuracy
  • Thermal drift in extreme temperatures
  • Electrostatic discharge (ESD) damage
FMEA Triads
Trigger: High-frequency noise or electromagnetic interference
Failure: Signal distortion or inaccurate readings
Mitigation: Implement shielding, use low-pass filters, and ensure proper grounding in circuit design.
Trigger: Overvoltage or incorrect power supply
Failure: Permanent damage to internal switches
Mitigation: Incorporate overvoltage protection circuits and adhere to specified voltage ratings.

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
±0.1% to ±1% for signal accuracy depending on grade
Test Method
Signal integrity testing per IEC 61000-4 series for EMC, and parametric testing using precision multimeters and oscilloscopes.

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Analog Multiplexer (MUX)

Manufacturer profiles associated with Analog Multiplexer (MUX).

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Frequently Asked Questions

What is the difference between an analog multiplexer and a digital multiplexer?

An analog multiplexer switches continuous analog signals (e.g., voltage, current) without digitizing them, while a digital multiplexer handles discrete digital signals (binary data). Analog MUX requires low on-resistance and high bandwidth to preserve signal integrity.

How does an analog multiplexer reduce system cost in industrial applications?

By allowing multiple analog sensors to share a single ADC and processing unit, it minimizes component count, reduces wiring complexity, and lowers overall system cost while maintaining signal acquisition capabilities.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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