Switch Array: Bandwidth DC to 500 MHz, On-Resistance 5-100 ohms

Q: Can switch arrays handle both AC and DC signals?

Yes, most switch arrays support both AC and DC signals within their specified voltage and frequency ranges, making them versatile for various analog signal routing applications.

Component Specifications

Definition

A switch array is a semiconductor-based electronic component consisting of multiple analog switches arranged in a matrix configuration, designed to selectively connect multiple input signals to a common output line in analog multiplexing applications. It enables sequential or parallel switching of analog voltage or current signals with minimal signal degradation, high isolation between channels, and precise control through digital addressing.

Working Principle

The switch array operates by using field-effect transistors (FETs) or CMOS technology as switching elements. Each switch is controlled by digital address lines that activate specific paths through decoder logic. When a particular channel is selected, the corresponding switch closes, creating a low-resistance path for the analog signal to pass through to the output, while all other switches remain open to prevent crosstalk and signal interference.

Materials

Silicon substrate with CMOS or BiCMOS technology, aluminum or copper metallization layers, silicon dioxide insulation, gold bonding wires, ceramic or plastic packaging (DIP, SOIC, QFP).

Technical Parameters

Parameter	Typical range	Notes & selection driver
Bandwidth	DC to 500 MHz
Switch Type	SPST (Single-Pole Single-Throw)
Package Type	DIP-16, SOIC-16, TSSOP-24, QFN-32
Channel Count	4 to 64 channels
Off Isolation	>70 dB at 1 MHz
On Resistance	5-100 ohms
Supply Voltage	±5V to ±15V dual supply or 3V to 5V single supply
Switching Speed	50 ns to 500 ns

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

Standards

IEC 60747, JEDEC JESD22

Parent Products

This component is used in the following industrial products

Analog Multiplexer

An electronic component that selects one of several analog input signals and forwards the selected input to a single output line.

View Product Details

Input Multiplexer

A switching component that selects and routes multiple analog input signals to a single ADC channel.

View Product Details

Engineering Analysis

Risks & Mitigation

Signal crosstalk between channels
Thermal runaway in high-frequency operation
Electrostatic discharge damage
Latch-up in CMOS devices
Contact degradation over switching cycles

FMEA Triads

Trigger: Exceeding maximum voltage ratings
Failure: Permanent damage to switching transistors
Mitigation: Implement overvoltage protection circuits and adhere to specified operating conditions

Trigger: High switching frequency beyond specifications
Failure: Increased on-resistance and signal distortion
Mitigation: Use derating guidelines and thermal management for high-frequency applications

Trigger: Poor PCB layout and grounding
Failure: Signal integrity issues and electromagnetic interference
Mitigation: Follow manufacturer's layout guidelines, use proper ground planes, and minimize trace lengths

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.5% for on-resistance matching between channels, ±1% for signal path linearity

Test Method

Four-point probe measurement for on-resistance, network analyzer for frequency response, automated test equipment for switching characteristics

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 Switch Array

Manufacturer profiles associated with Switch Array.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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Frequently Asked Questions

What is the difference between a switch array and a digital multiplexer?

A switch array handles analog signals with continuous voltage/current values, while digital multiplexers process discrete binary signals. Switch arrays maintain signal integrity without digitization.

How does on-resistance affect switch array performance?

Higher on-resistance causes signal attenuation and distortion, particularly in high-frequency applications. Lower on-resistance (typically <50 ohms) ensures minimal signal loss and better accuracy.

Can switch arrays handle both AC and DC signals?