Semiconductor Companies Recommend Vishay Foil Resistors for Reference Designs in Precision Analog Applications

Vishay Precision Group, Inc. today announced that an increasing number of semiconductor companies are recommending its Vishay Foil Resistors (VFR) brand resistors as part of their reference designs for precision analog applications.

In the latest example, Intersil Corporation is using VFR's ultra-high-precision FRSM Z1-Foil wrap-around chip resistors to maintain exceptional gain accuracy under extraordinary thermal and environmental stresses in its new precision, low-noise signal chain solution.

Included in Intersil's signal chain solution are the 40 V ISL28617 low-noise instrumentation amplifier, the ISL21090 low-noise voltage reference, and the ISL26134 low-noise 24-bit delta-sigma analog-to-digital converter (ADC). The ISL28617 offers excellent gain accuracy and gain temperature coefficient over a temperature range of -40°C to +125°C, with the industry's highest common mode rejection ratio (CMRR) in all gain configurations. The ISL28617 can provide both high gain and attenuation, and is ideal for instrumentation, industrial, motor control, and medical systems.

The gain of the ISL28617 can be programmed from 0.1 to 10,000 via two external resistors. Since gain accuracy is determined by the matching of the resistors, resistor temperature drift and instability create gain errors and ultimately limit system accuracy. For high gains where the resistors are subject to different voltages, resistor voltage coefficients and unequal self-heating can add additional errors. To maintain gain accuracy, resistors with low temperature coefficient of resistance (TCR) and power coefficient of resistance (PCR) are required.

To reduce gain error due to thermal gradients in Intersil's signal chain solution, the FRSM series offers low typical TCR of 0.05 ppm/°C from 0°C to +60°C and 0.2 ppm/°C from -55°C to +125°C, +25°C ref, and low PCR of 5 ppm at rated power. For increased reliability, the devices provide exceptional load-life stability of 0.0025% (25 ppm) at 70°C and rated power for 2,000 hours and 0.005% for 10,000 hours, and tight tolerances to 0.01%. The resistors feature a rise time of 1.0 ns, with effectively no ringing, a thermal stabilization time of less than 1 s (nominal value achieved within 10 ppm of steady state value), current noise of 0.010 microvolts rms/V of applied voltage (less than -40 dB), and a voltage coefficient of less than 0.1 ppm/V.

Tell Us What You Think

Do you have a review, update or anything you would like to add to this news story?

Leave your feedback
Your comment type

While we only use edited and approved content for Azthena answers, it may on occasions provide incorrect responses. Please confirm any data provided with the related suppliers or authors. We do not provide medical advice, if you search for medical information you must always consult a medical professional before acting on any information provided.

Your questions, but not your email details will be shared with OpenAI and retained for 30 days in accordance with their privacy principles.

Please do not ask questions that use sensitive or confidential information.

Read the full Terms & Conditions.