Datasheet ADR291W (Analog Devices) - 6
| Manufacturer | Analog Devices |
| Description | Low Noise Micropower Precision Voltage Reference (2.5 V) |
| Pages / Page | 8 / 6 — ADR291W. TERMINOLOGY Line Regulation. Temperature Coefficient. Load … |
| File Format / Size | PDF / 128 Kb |
| Document Language | English |
ADR291W. TERMINOLOGY Line Regulation. Temperature Coefficient. Load Regulation. NC = No Connect. Long-Term Stability
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ADR291W TERMINOLOGY Line Regulation Temperature Coefficient
Line regulation refers to the change in output voltage due to a Temperature coefficient is the change of output voltage over specified change in input voltage. It includes the effects of self- the operating temperature change, normalized by the output heating. Line regulation is expressed as percent per volt, parts voltage at 25°C, expressed in ppm/°C. The equation follows: per million per volt, or microvolts per volt change in input TCV V T V T ppm/C OUT 2 OUT 1 6 10 voltage. O V 25CT T OUT 2 1
Load Regulation
where: The change in output voltage is due to a specified change in VOUT (25°C) = VOUT at 25°C. load current and includes the effects of self-heating. Load VOUT (T1) = VOUT at Temperature 1. regulation is expressed in microvolts per milliampere, parts per VOUT (T2) = VOUT at Temperature 2. million per milliampere, or ohms of dc output resistance.
NC = No Connect Long-Term Stability
There are internal connections at NC pins that are reserved for Long-term stability refers to the typical shift of output voltage manufacturing purposes. Users should not connect anything at at 25°C on a sample of parts subjected to a test of 1000 hours the NC pins. at 125°C.
Thermally Induced Output Voltage Hysteresis
V V t V t Thermally induced output voltage hysteresis is defined as the OUT OUT 0 OUT 1 V t V t change of output voltage after the device is cycled through V ppm OUT 0 OUT 1 6 OUT temperatures from +25°C to −40°C, then to +85°C, and back to V t OUT 0 10 +25°C. This is a typical value from a sample of parts put where: through such a cycle. VOUT (t0) = VOUT at 25°C at Time 0. V V 25 ( C) V OUT V HYS OUT OUT_TC OUT (t1) = VOUT at 25°C after 1000 hours of operation at 125°C. V 25 ( C) V OUT OUT_TC 6 V [ppm] 10 ΟUT HYS V 25 ( C) OUT where: VOUT (25°C) = VOUT at 25°C. VOUT–TC = VOUT at 25°C after temperature cycle from +25°C to −40°C, then to +85°C, and back to +25°C. Rev. 0 | Page 6 of 8 Document Outline Features Applications Connection Diagram General Description Revision History Specifications Electrical Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Terminology Outline Dimensions Ordering Guide
Line regulation refers to the change in output voltage due to a Temperature coefficient is the change of output voltage over specified change in input voltage. It includes the effects of self- the operating temperature change, normalized by the output heating. Line regulation is expressed as percent per volt, parts voltage at 25°C, expressed in ppm/°C. The equation follows: per million per volt, or microvolts per volt change in input TCV V T V T ppm/C OUT 2 OUT 1 6 10 voltage. O V 25CT T OUT 2 1
Load Regulation
where: The change in output voltage is due to a specified change in VOUT (25°C) = VOUT at 25°C. load current and includes the effects of self-heating. Load VOUT (T1) = VOUT at Temperature 1. regulation is expressed in microvolts per milliampere, parts per VOUT (T2) = VOUT at Temperature 2. million per milliampere, or ohms of dc output resistance.
NC = No Connect Long-Term Stability
There are internal connections at NC pins that are reserved for Long-term stability refers to the typical shift of output voltage manufacturing purposes. Users should not connect anything at at 25°C on a sample of parts subjected to a test of 1000 hours the NC pins. at 125°C.
Thermally Induced Output Voltage Hysteresis
V V t V t Thermally induced output voltage hysteresis is defined as the OUT OUT 0 OUT 1 V t V t change of output voltage after the device is cycled through V ppm OUT 0 OUT 1 6 OUT temperatures from +25°C to −40°C, then to +85°C, and back to V t OUT 0 10 +25°C. This is a typical value from a sample of parts put where: through such a cycle. VOUT (t0) = VOUT at 25°C at Time 0. V V 25 ( C) V OUT V HYS OUT OUT_TC OUT (t1) = VOUT at 25°C after 1000 hours of operation at 125°C. V 25 ( C) V OUT OUT_TC 6 V [ppm] 10 ΟUT HYS V 25 ( C) OUT where: VOUT (25°C) = VOUT at 25°C. VOUT–TC = VOUT at 25°C after temperature cycle from +25°C to −40°C, then to +85°C, and back to +25°C. Rev. 0 | Page 6 of 8 Document Outline Features Applications Connection Diagram General Description Revision History Specifications Electrical Specifications Absolute Maximum Ratings ESD Caution Pin Configuration and Function Descriptions Terminology Outline Dimensions Ordering Guide
