Malvern, Pa. Vishay Intertechnology, Inc. has introduced the VFCD1505 surface-mount, flip-chip voltage divider, which provides a low absolute temperature coefficient of resistance (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. It also claims excellent power coefficient of resistance (PCR) tracking of ±5 ppm at rated power, and a load life stability ratio of ±0.005%.
The VFCD1505 provides tight tolerance matching of ±0.01% (available down to ±0.005%) and TCR tracking of 0.1 ppm/°C between two resistors simultaneously etched on one piece of foil on a common substrate. For designers, the electrical specifications of this integrated construction offer improved performances and better real estate utilization over discrete resistors and matched pairs, Vishay said.
The VFCD1505 features a load-life stability ratio of ±0.005% for 2000 hours at +70°C, a power rating of 0.1 W at +70°C (divided between the two resistors proportionally to their value), a low voltage coefficient of <0.1 ppm/V, current noise of <-40 dB, and thermal EMF of 0.05 uV/°C.
The device offers a fast rise time of 1.0 ns without ringing and features a non-inductive (<0.08 uH), non-capacitive design. It withstands electrostatic discharges exceeding 25 kV, for increased reliability.
The voltage divider is built on Vishay's "Z- foil" technology, which provides a significant reduction of the resistive component's sensitivity to ambient temperature variations (TCR) and applied power changes (PCR). Z-Foil improves stability by an order of magnitude compared to any other resistor technology, allowing designers to guarantee a high degree of accuracy in fixed-resistor applications, Vishay said.
Applications include high-precision instrumentation amplifiers, bridge networks, differential amplifiers, and ratio arms in bridge circuits for ultra-stable and high-reliability products such as medical, test, and military equipment. Screening in accordance with EEE-INST-002 is available (MIL-PRF 55342).
Pricing: $7.10 for U.S. delivery.
Availability: Samples and production quantities are available now, with lead times of 72 hours for samples, and three weeks for standard orders.
Vishay Intertechnology, www.vishay.com