RHD5930 Datasheet | Aeroflex Circuit Technology

FEATURES  Radiation performance - Total dose: - ELDRS Immune - SEL Immune: - Neutron Displacement Damage: >1 Mrad(Si), Dose rate = 50 - 300 rads(Si)/s >100 Me V-cm2/mg >1014 neutrons/cm2  11-Bit DAC  Single power supply operation at +3.3V to +5V VCC PREF  Low Power  Full 4-quadrant multiplying DAC  CMOS/TTL inputs D10:D00 AOUT  Full military temperature range  Designed for aerospace and high reliability space applications GND NREF  Packaging - Hermetic ceramic SOIC - 16 leads, 0.417"L x 0.300"W x 0.105"Ht - Typical Weight 0.8 grams SCHEMATIC SYMBOL  Aeroflex Plainview’s Radiation Hardness Assurance Plan is DLA Certified to MIL-PRF-38534, Appendix G. GENERAL DESCRIPTION The Aeroflex 11-Bit DAC is a standard CMOS R/2R Kelvin resistor network. The digital inputs, D10(MSB) through D00(LSB), are buffered to drive single-pole double-throw CMOS switches to apply either the PREF or NREF signals to the 2R legs of the resistor network. The output is unbuffered. PREF and NREF inputs can be any static or dynamic voltage within the power supply range. The nominal values or R and 2R are 5K and 10K respectively. The characteristic impedance of the resistor network is approximately 5K. The voltage-output configuration of the integrated circuit can be thought of as a digitally controlled voltage with a value of PREF-NREF and an output impedance of approximately 5K. The output will swing rail-to-rail if unloaded. The DAC can also be operated in the so-called "inverted" mode where any voltage between the power rails can be applied to the output and currents into a very low impedance (operational amplifier summing junction for example) can be obtained from the PREF and NREF ports. The sum of the currents is constant and the proportion at PREF and NREF is controlled by the digital input number. Applications include digital potentiometers, programmable voltage sources and a large variety of other circuits that can be found in many industry references. SCD5930...