SCIOSPEC MULTIPLEXERS

Precision EIS multiplexing across 32 to 256+ connections.

Sciospec multiplexers route one impedance analyzer sequentially across many DUTs, sensors or electrode combinations.

They are designed specifically for demanding impedance measurements, combining very high isolation, ultra-low parasitics and any-to-any routing for flexible 2-, 3- and 4-electrode configurations. Choose standard MUX32 or MUX64 external modules, scale to larger systems where required, or integrate multiplexing directly into selected Sciospec instruments.

Tell us how many connections you need, how they must be switched and which analyzer you use – Sciospec or otherwise. We will recommend the simplest suitable MUX and interface route.

32–256+ Ports

SCALE THE CONNECTION COUNT

Standard MUX32 and MUX64 modules, extendable to larger application-specific systems

>10 TΩ | <0.7 pF

SWITCHING QUALITY

High isolation and ultra-low parasitic capacitance to minimize influence on the measurement path

Any-to-any

ROUTING

Assign measurement functions freely across the available ports for 2-, 3- and 4-electrode measurements

External or integrated

DEPLOYMENT

Use as an external extension or integrated instrument option

WHY SWITCHING QUALITY MATTERS IN EIS

Switching designed for precision impedance measurement.

Multiplexing keeps many DUTs, sensors or electrodes connected and routes the analyzer automatically between the required measurement positions.

For precision EIS, the switch matrix is part of the electrical measurement path. Disconnected channels can add leakage or capacitive coupling; active switches add resistance and capacitance. These effects become increasingly relevant at high impedance, small capacitance and higher frequency.

Sciospec multiplexers are designed to make the switching network as electrically unobtrusive as possible.

INACTIVE PATHS

Keep disconnected channels out of the measurement

Isolation above 10 TΩ || 0.4 pF keeps unselected paths effectively separated from the active measurement.

This is particularly important when very high impedances or small capacitive signals make leakage and coupling visible.

ACTIVE PATH

Minimize the MUX contribution to the active path

With parasitic capacitance below 0.7 pF and maximum series resistance of 200 mΩ, the active switching path adds very little of its own impedance.

Specified zero on-state leakage and zero charge injection further reduce switching-related influence on demanding measurements.

ROUTING

Assign any measurement terminal to any MUX port

Many multiplexers use fixed channel assignments or switch one common connection across a predefined set of channels. The Sciospec MUX routes the analyzer terminals independently.

Any available MUX port can therefore be assigned to the required analyzer terminal, allowing flexible 2-, 3- or 4-electrode configurations without rewiring the setup.

Use the same connected setup for:

repeated measurements across many DUTs;

changing polarity;

moving excitation paths;

scanned sensing positions;

multi-terminal components;

changing injection and sensing patterns across electrode arrays.

Sciospec multiplexers are designed to make the switching network as electrically unobtrusive as possible.

Technical Specifications

Key specifications for first technical qualification. Overall EIS performance also depends on the connected analyzer, DUT, frequency, impedance and complete measurement path.

Parameter

Specification

Details

CHANNELS & CONFIGURATION

Standard external configurations

MUX32 · MUX64

32 or 64 physical multiplexer ports

Larger configurations

128 · 256 · larger

Application-specific system configurations

Measurement architecture

Sequential multiplexing

One configured measurement path is routed at a time

Routing topology

Any-to-any

Any analyzer terminal can be assigned to any available MUX port

Electrode configurations

2-, 3- and 4-electrode

Supports changing terminal and electrode assignments

SWITCHING CHARACTERISTICS

Isolation

>10 TΩ || 0.4 pF

Power-off or software-selected cell disconnect

Parasitic capacitance

<0.7 pF

Low additional capacitive loading

Series resistance

max. 200 mΩ

Connected switching path

Leakage current

0 in on-state

Current product specification

Charge injection

0 Current product specification

SYSTEM INTEGRATION

Sciospec instrument connection

ExtensionPort

Carries measurement signals, supply and digital I/O

Application-side interface

SC98

Breakouts, adapters, carriers and custom interfaces

External Sciospec integration

ISX-3 · ISX-3mini · ISX-5

Current compatible ExtensionPort route

Integrated MUX options

ISX-3 · ISX-5

Multiplexing can be built into suitable instrument configurations

CHOOSING THE RIGHT ARCHITECTURE

Sequential where scale matters. Parallel where timing matters.

“Multichannel” can describe two very different requirements.

The important question is whether the measurements need to happen at the same instant.

MULTIPLEXED MEASUREMENT

One analyzer. Many selectable paths.

Choose multiplexing when many DUTs, electrodes or terminal combinations can be measured one after another.

Typical reasons: automate measurements across many positions; avoid manual reconnecting; access larger sensor or electrode arrays; change electrode combinations through software; scale the setup without duplicating the complete analyzer.

Strong fit: many connections, sequential acquisition acceptable.

PARALLEL MEASUREMENT

Several measurement engines. Simultaneous acquisition.

Choose a parallel architecture when several signals must genuinely be measured at the same time—for example when their dynamics need to be compared on one timeline.

Strong fit: simultaneous acquisition is part of the measurement requirement.

For true-parallel EIS, explore the ISX-5. For applications that combine parallel impedance or electrochemical measurements with integrated routing across many sensor contacts, the CSX-64 may be the better fit.

ALREADY USING A SWITCH MATRIX?

A conventional scanner or relay matrix can be entirely adequate when topology and electrical loading are uncritical.

The Sciospec MUX becomes especially interesting when the switching itself must preserve demanding impedance measurements, when the electrode assignments change, or when switching and analyzer control should operate as one coordinated system.

SYSTEM INTEGRATION

Three ways to use the Sciospec MUX.

Use it as an external ExtensionPort module, integrate it into selected Sciospec instruments, or ask us to review compatibility with measurement equipment you already use.

EXTERNAL MUX

Extend a Sciospec analyzer with an external MUX

ISX-3 / ISX-3mini / ISX-5 → ExtensionPort → MUX → SC98 → sensor / DUT / fixture

Use an external MUX when you want to add or change multiplexing independently from the instrument, or extend an existing compatible Sciospec analyzer.

ExtensionPort carries the measurement terminals, supply and digital I/O between analyzer and MUX, with switching controlled as part of the Sciospec system.

Good fit for: retrofits, modular laboratory systems and setups that may change.

INTEGRATED MUX

Integrate multiplexing directly into the instrument

ISX-3 / ISX-5 with integrated MUX → SC98 → sensor / DUT / fixture

Choose an integrated configuration when multiplexing is a permanent part of a new system and you want the most compact Sciospec solution.

The analyzer and switching are configured together and operated as one system. Good fit for: compact dedicated setups and new systems with a defined multiplexing requirement.

ALREADY HAVE ANOTHER ANALYZER?

Using another analyzer? Ask us to check compatibility

Sciospec multiplexers are designed to work seamlessly with Sciospec measurement hardware and software. If you already use another analyzer, that does not automatically rule out the MUX.

Third-party use may be possible, depending on the instrument and measurement setup. Compatibility depends on the instrument's electrical connections and control interface, as well as your switching topology and measurement range. We review these setups individually rather than presenting the MUX as a universal plug-and-play accessory.

For a first compatibility check, send us:

which instrument you use;

what you are measuring;

how many connections are required;

which terminals need to be switched;

the relevant frequency and impedance range.

We can then assess whether a suitable integration route is available.

TYPICAL MUX APPLICATIONS

Typical situations for multiplexed impedance measurements.

The applications vary, but the reason for multiplexing is usually simple: many connected positions or terminal combinations need to be measured sequentially with the same analyzer.

MANY DUTS OR SAMPLES

Scan many DUTs or samples automatically

Keep components, sensors or samples connected and scan them sequentially instead of manually changing cables between measurements. Useful for development comparisons, repeated checks and automated characterization.

SENSOR & ELECTRODE ARRAYS

Switch excitation and sensing across electrode arrays

Use any-to-any routing when excitation and sensing positions need to change across a larger electrode map.

Because individual electrodes can take different roles from one measurement step to the next, the MUX supports more than simple sequential channel scanning.

MULTI-TERMINAL DUTS

Change terminal combinations without rewiring

Switch between different 2-, 3- or 4-terminal configurations on the same connected device.

Useful when different current paths, sense points or polarity assignments form part of the experiment.

CUSTOM & AUTOMATED TEST SETUPS

Integrate switching into automated test setups

Replace manual reconnection or custom relay boards with controlled switching designed for impedance measurement.

Combine the MUX with SC98 interfaces, external control and application-specific fixtures where the setup must become repeatable.

APPLICATION INTERFACES

Connect the MUX to your sensor, fixture or DUT.

SC98 provides the application-side interface between the MUX and the sensor, fixture or DUT.

Use simple breakout cabling for individual access, adapter cards or sensor carriers for defined formats, and custom interfaces where the application needs something else.

BREAKOUT CONNECTIONS

Access individual MUX ports directly

Use coaxial breakout cabling when straightforward individual access is useful.

ADAPTERS & SENSOR CARRIERS

Connect established formats with adapters or carriers

Use SC98 adapter cards or PCB sensor carriers where the application already has a defined connector or electrode format.

CUSTOM INTERFACES

Create a dedicated interface for your sensor

For proprietary chips, fixtures, cartridges or contact maps, Sciospec can develop a dedicated interface—or customers can design their own interface using available SC98 design information.

EXTENSION & SIGNAL CONDITIONING

Add extension or signal conditioning where needed

SC98 can also support extension cables and application-side circuitry such as filtering, protection or AC coupling where required.

Send us a pinout, contact map or connector drawing. We will recommend the simplest suitable route from the MUX to the application.

Configure your multiplexer

Pick channel count, external or integrated form factor, SC98 carrier type and add-ons — cables, AC coupling, custom carriers, EIT option and training.

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Frequently Asked Questions

What does a Sciospec multiplexer do?

A Sciospec multiplexer lets one impedance measurement path access many DUTs, sensors or electrode combinations sequentially.

Instead of manually reconnecting the analyzer—or providing a complete analyzer channel for every physical connection—the switching system selects the required path automatically.

What is the difference between a MUX port and a measurement channel?

Each port can be assigned to any electrode role (work / sense / counter / reference) on the fly. You can build arbitrary 2-, 3- or 4-electrode configurations, switch polarities, scan potentials and realise EIT-style injection patterns — all from software, without rewiring.

Why use a Sciospec MUX instead of a generic scanner?

> 10 TΩ ‖ 0.4 pF isolation at power off or selected cell disconnect, parasitic capacitance < 0.7 pF, max. 200 mΩ series resistance on, zero leakage current and zero charge injection — no distortion, no noise beyond thermal noise.

What does any-to-any routing mean?

Yes. Available as an external unit on any ExtensionPort-compatible Sciospec analyzer, or integrated with the ISX-3 / ISX-5 in a single enclosure.

How many ports are available?

SC98 is open by design. Pick stock connectors, design your own carrier (we share the design data), or have Sciospec build a custom carrier with AC coupling, filtering or application-specific routing.

Can the multiplexer be integrated directly into a Sciospec instrument?