PCS5035

Standard Products Datasheet PCS5035 Quintet Precision Current Sources Built-In Comparators Radiation Tolerant www.aeroflex.com/pcs October 22, 2014 FEATURES  Radiation Performance - Total dose > 100 krad(Si), Dose rate = 50 - 300 rads(Si)/s - ELDRS > 15 krads(Si), Dose rate = .01 rads(Si)/s  Five high precision 80µA current source outputs/comparator inputs  Monolithic construction  Designed for thermistor temperature monitoring  Enable control  Long term stability  Low drift  Zener protected input  DC supply voltage +5V  Low supply current  High impedance sensor interface  Designed for aerospace and high reliability space applications  0.63"Sq x 0.125"Ht, 18 lead, hermetic flat package  Aeroflex Plainview’s Radiation Hardness Assurance Plan is DLA Certified to MIL-PRF-38534, Appendix G. GENERAL DESCRIPTION The Aeroflex Plainview PCS5035 contains "Five Monolithic" precision current sources designed for thermistor current monitor and resistive sensor applications. The precision current source (80µA ±2µA)/Comparator inputs are compared to an external reference of 0VDC to 3VDC. A precision internal 2.0VDC reference is provided if an external reference is not available. See Figure 1. The comparator outputs of two (2) PCS5035 can be wired or’ed to provide 10 sensors inputs. Current source output/comparator inputs of two or more units can be tied together to provide more sensor current. A logic "high" of 3.4VDC maximum on the enable pin turns on the current sou...