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Y070680K5000T9L Datasheet(PDF) 1 Page - Vishay Siliconix |
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Y070680K5000T9L Datasheet(HTML) 1 Page - Vishay Siliconix |
1 / 5 page Ultra High Precision, Z-Foil Audio Resistor Minimizes Noise and Distortion in the Signal Path with TCR of ± 0.05 ppm/°C, Tolerance to ± 0.005 % and High Linearity or Low Voltage Coefficient of Resistance (VCR) of 0.1 ppm/V VAR Vishay Foil Resistors Document Number: 63140 For any questions, contact: foil@vishaypg.com www.vishayfoilresistors.com Revision: 22-Nov-10 1 INTRODUCTION Many manufacturers and users of precision electronic equipment suffer needlessly from unexplained instabilities and drifts due to noise effects. They resign themselves to making constant adjustments and troubleshooting. But in fact these can be avoided. Instability is often traceable to a few supposedly “fixed” resistors which are not really fixed at all. If these resistors would only retain their original values, there would be no need for costly controls and other compensating circuitry. That’s why the only resistor for applications such as these is Vishay Bulk Metal® Foil. In high-end audio equipment, careful selection of resistors is one of the best ways to avoid or minimize noise and distortion in the signal path. Noise is an unwanted wide spectrum signal that may be superimposed on any useful signal, including DC. Resistors, like other passive components, are noise sources to various degrees, depending upon resistance value, temperature, applied voltage, and resistor type. Many experiments have been done to show why some resistors are “noisier” than others. But the only test that audio experts and audiophiles have agreed on is comparing the level of fidelity that results when different resistor technologies are used in actual audio systems. High-end analog audio applications require low intrinsic noise, high linearity of amplification, and minimal dynamic distortion. The typical audio amplifier consists of a voltage preamplifier (preamp) and power amplifier (final driver). The voltage preamplifier deals with low-level signals. That is why its intrinsic noise level is critical. Resistors are among the principal noise sources in the amplifiers. The main requirements for the audio power amplifier are high linearity of amplification and minimal dynamic distortion. Vishay Foil resistors are characterized by very low intrinsic non-linearity of the resistive element, which is made from cold-rolled bulk metal. The VAR, composed of Vishay’s Bulk Metal® Z-foil technology, with improved sound quality, provides a combination of low noise and low inductance/capacitance, making it unrivalled for applications requiring low noise and distortion-free properties. FEATURES • Temperature coefficient of resistance (TCR): ± 0.05 ppm/°C typical (0 °C to + 60 °C,+ 25 °C ref.) ± 0.2 ppm/°C typical (0 °C to + 125 °C, + 25 °C ref.) • Rated power: to 0.4 W at + 70 °C • Resistance tolerance: to ± 0.01 % (0.005% is available) • Load life stability: to ± 0.005 % at 70 °C, 2000 h at rated power • Resistance range: 10 Ω to 100 kΩ • "Naked Z-foil resistor" design without molding or encapsulation adds an additional dimension for reducing signal distortion and increasing clarity in signal processing. • Vishay Foil resistors are not restricted to standard values; specific "as-required" values can be supplied at no extra cost or delivery (e.g. 1K2345 vs 1K) • Electrostatic discharge (ESD) at least to 25 000 V • Non-inductive, non-capacitive design • Rise time: 1 ns, effectively no ringing • Current noise: 0.010 µV (RMS)/Volt of Applied Voltage (< - 40 dB) • Thermal EMF: 0.05 µV/°C • Voltage coefficient: < 0.1 ppm/V • Thermal stabilization time < 1 s (nominal value achieved within 10 ppm of steady state value) • Inductance: < 0.08 µH typical • The Z-Foil chip in the VAR has been especially treated to increase load life stability. • Terminal Finish: lead (Pb)-free or tin/lead alloy(1) • Prototype quantities available in just 5 working days or sooner. For more information, please contact foil@vishaypg.com For better performances please contact us. |
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