Datasheet ADR525, ADR530, ADR550 (Analog Devices) - 6

ADR525/ADR530/ADR550 PARAMETER DEFINITIONS TEMPERATURE COEFFICIENT THERMAL HYSTERESIS
Temperature coefficient is defined as the change in output Thermal hysteresis is defined as the change in output voltage voltage with respect to operating temperature changes and is after the device is cycled through temperatures ranging from normalized by the output voltage at 25°C. This parameter is +25°C to −40°C, then to +85°C, and back to +25°C. The expressed in ppm/°C and is determined by the following following equation expresses a typical value from a sample of equation: parts put through such a cycle: ⎡ ppm V (T ) − V (T ) ⎤ V = V 25 ( ° C) − V OUT 2 OUT 1 6 TCV = ×10 (1) OUT _ HYS OUT OUT _ END O ⎢ ⎥ ⎣ °C ⎦ V 25 ( ° C) × (T − T ) V 25 ( ° C) − V (2) OUT 2 1 OUT OUT _ END 6 V [ppm] = ×10 OUT _ HYS V ° where: 25 ( C) OUT VOUT(T2) = VOUT at Temperature 2. VOUT(T1) = VOUT at Temperature 1. where: VOUT(25°C) = VOUT at 25°C. VOUT(25°C) = VOUT at 25°C. VOUT_END = VOUT at 25°C after a temperature cycle from +25°C to −40°C, then to +85°C, and back to +25°C. Rev. F | Page 6 of 12 Document Outline FEATURES APPLICATIONS PIN CONFIGURATION GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ADR525 ELECTRICAL CHARACTERISTICS ADR530 ELECTRICAL CHARACTERISTICS ADR550 ELECTRICAL CHARACTERISTICS ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PARAMETER DEFINITIONS TEMPERATURE COEFFICIENT THERMAL HYSTERESIS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION APPLICATIONS Precision Negative Voltage Reference Output Voltage Trim Stacking the ADR525/ADR530/ADR550 for User-Definable Outputs Adjustable Precision Voltage Source OUTLINE DIMENSIONS ORDERING GUIDE