EEG and EKG Systems Deserve Signal Clarity Down to the Nanoamp

When you're measuring the faintest electrical signals produced by the brain and heart, any noise, leakage, or delay can corrupt the diagnostic data. That’s why precision diagnostics demand clean analog switching, with speed and signal integrity that traditional switches simply can’t deliver.

⚡ Why Speed and Leakage Matter in EEG/EKG Design

• High-Speed Matters: With switching speeds under 1 ns, you avoid temporal distortion. Fast switching means less glitching when you're sampling at high rates—critical for capturing accurate waveforms for both EEG (0.5–100 Hz) and EKG (up to 150 Hz) signals.

• Ultra-Low Leakage (Nanoamps): In high-impedance front-ends, leakage currents—even just a few nanoamps—can introduce bias errors or drift, compromising measurement precision. Low leakage ensures your signal chain remains true to the physiology. (analog.com)

• Minimal Capacitance & Charge Injection: Low capacitance reduces filtering effects at high frequencies, while low charge injection prevents voltage spikes during switching, keeping analog fidelity intact. (analog.com)

🔍 Introducing the SST210: Built for Precision

Our SST210 analog switch hits all the marks:

Feature	Spec	Why It Matters
Switch-on time	< 1 ns	Preserves waveform fidelity
Reverse capacitance	~0.2 pF	Minimizes signal distortion (mouser.com, electronicspecifier.com)
Leakage current	Nanoamp-level	Avoids bias and drift in high-impedance EEG/EKG inputs
Low ON-resistance	Guaranteed	Maintains consistent gain and low signal loss
Single-supply operation	Simple + drive requirements	Keeps your front-end compact and reliable

This makes the SST210 ideal for sensitive front-end paths like sample-and-hold circuits, measurement multiplexers, deglitch circuits in DACs, and EEG/EKG monitoring front-ends.

🧠 The Role of Clean Switching in EEG/EKG

• Accurate Amplification: EEG and EKG signals typically sit in the microvolt to millivolt range. Any offset current—especially in the nanoamp range—can shift baselines or distort peaks, skewing diagnostic readings.

• High-Resolution Sampling: Bio-signal pipelines use anti-aliasing filters tuned just above signal bandwidth. Fast, glitch-free switching ensures these filters work as intended, without introducing jitter or settling delay (mouser.com).

• Reliable Multiplexing: Systems often share ADCs across multiple channels. Clean switching is essential when sampling multiple leads/channels tightly—for instance, when recording dozens of EEG electrodes or precordial EKG leads.

🛠️ How to Integrate the SST210

• Front-End Placement: Use the SST210 directly before the input buffer/amplifier. Its low leakage protects against bias creep.

• Drive Supply: A single 5 V rail is all that’s needed—no complex gate drivers required.

• Mounting: The SOT‑143 package is compact and easy to route on high-density PCB layouts.

• Testing Protocols: Evaluate the switch in your actual signal chain with known microvolt-level inputs to measure added noise, offset, and settling behavior.

🎁 Try It for Yourself

We’re offering free SST210 samples to qualified engineers so you can test its performance in your EEG/EKG designs without cost or risk.

👉Complete our samples request form: https://www.linearsystems.com/about-2

Don’t settle for analog switching that compromises your diagnostic signal. Let the SST210 give your biomedical systems the signal clarity they deserve—down to the nanoamp.

Precision diagnostics start with precision switching. Claim your free sample and elevate your design today!