Datasheet ADR5040, ADR5041, ADR5043, ADR5044, ADR5045 (Analog Devices) - 10

ADR5040/ADR5041/ADR5043/ADR5044/ADR5045 Data Sheet TERMINOLOGY Temperature Coefficient Thermal Hysteresis
The change in output voltage with respect to operating temperature The change in output voltage after the device is cycled through changes. It is normalized by an output voltage of 25°C. This temperatures ranging from +25°C to −40°C, then to +125°C, and parameter is expressed in ppm/°C and is determined by the back to +25°C. This is common in precision reference and is following equation: caused by thermal-mechanical package stress. Changes in envi-  ppm  V (T )−V (T ) ronmental storage temperature, board mounting temperature, and OUT 2 OUT 1 6 TCV = × OUT  (1) the operating temperature are some of the factors that can  C  °  V ( O 25° )×(T −T ) 10 C UT 2 1 contribute to thermal hysteresis. The following equation where: expresses a typical value from a sample of parts put through V such a cycle: OUT(25°C) = VOUT at 25°C. VOUT(T1) = VOUT at −40°C. V = V ( OUT HYS OUT 25° C) − _ VOUT _TC VOUT(T2) = VOUT at 125°C. (2) V [ V ° −V OUT HYS ppm] ( OUT 25 C) OUT _ TC 6 = × _ V ( OUT 25° ) 10 C where: VOUT(25°C) = VOUT at 25°C. VOUT_TC = VOUT at 25°C after a temperature cycle from +25°C to −40°C, then to +125°C, and back to +25°C. Rev. D | Page 10 of 15 Document Outline Features Applications Pin Configuration General Description Revision History Specifications ADR5040 Electrical Characteristics ADR5041 Electrical Characteristics ADR5043 Electrical Characteristics ADR5044 Electrical Characteristics ADR5045 Electrical Characteristics Absolute Maximum Ratings Thermal Resistance ESD Caution Typical Performance Characteristics Terminology Theory of Operation Applications Information Precision Negative Voltage Reference Stacking the ADR5040/ADR5041/ADR5043/ADR5044/ADR5045 for User-Definable Outputs Adjustable Precision Voltage Source Programmable Current Source Outline Dimensions Ordering Guide Automotive Products