Datasheet AD587 (Analog Devices) - 8
| Fabricante | Analog Devices |
| Descripción | High Precision 10 V Reference |
| Páginas / Página | 12 / 8 — AD587. ΔVOUT (µV). 10V. 1mV. 2µs. VL 100. 1000. 500. LOAD (mA). OUT. … |
| Revisión | H |
| Formato / tamaño de archivo | PDF / 363 Kb |
| Idioma del documento | Inglés |
AD587. ΔVOUT (µV). 10V. 1mV. 2µs. VL 100. 1000. 500. LOAD (mA). OUT. –500. –1000. TEMPERATURE PERFORMANCE. VOUT. 7.0V. 1000pF. 1kΩ. 200mV. 1µs. CL = 0. 100
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AD587 ΔVOUT (µV) 10V 1mV 2µs VL 100 1000 90 500 2 4 6 8 10 LOAD (mA) V –6 –4 –2 0 OUT –500 –1000 10 0%
5 01 0- 53 12 -0 00 30 Figure 15. Typical Load Regulation Characteristics 005 Figure 12. Fine-Scale Setting for Transient Load
TEMPERATURE PERFORMANCE
In some applications, a varying load may be both resistive and The AD587 is designed for precision reference applications capacitive in nature, or the load may be connected to the where temperature performance is critical. Extensive tempera- AD587 by a long capacitive cable. ture testing ensures that the device’s high level of performance is Figure 14 displays the output amplifier characteristics driving a maintained over the operating temperature range. 1000 pF, 0 mA to 10 mA load. Some confusion exists in the area of defining and specifying reference voltage error over temperature. Historically, references have been characterized using a maximum deviation per degree
VOUT 7.0V CL
Celsius, such as ppm/°C. However, because of nonlinearities in
1000pF 1kΩ
temperature characteristics that originated in standard Zener references (such as S-type characteristics), most manufacturers
V 10V L AD587 0V
have begun to use a maximum limit error-band approach to -013 specify devices. This technique involves the measurement of the 530 00 output at three or more temperatures to specify an output Figure 13. Capacitive Load Transient/Response Test Circuit voltage error band.
10V 200mV 1µs CL = 0 100 90 C 10 L = 1000pF 0%
4
VL
-01 0 53 00 Figure 14. Output Response with Capacitive Load
LOAD REGULATION
The AD587 has excellent load regulation characteristics. Figure 15 shows that varying the load several milliamperes changes the output by only a few microvolts. Rev. H | Page 8 of 12 Document Outline FEATURES FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS THEORY OF OPERATION APPLYING THE AD587 NOISE PERFORMANCE AND REDUCTION TURN-ON TIME DYNAMIC PERFORMANCE LOAD REGULATION TEMPERATURE PERFORMANCE NEGATIVE REFERENCE VOLTAGE FROM AN AD587 APPLICATIONS INFORMATION USING THE AD587 WITH CONVERTERS 10 V Reference with Multiplying CMOS DACs or ADCs Precision Current Source Precision High Current Supply OUTLINE DIMENSIONS ORDERING GUIDE
AD587 ΔVOUT (µV) 10V 1mV 2µs VL 100 1000 90 500 2 4 6 8 10 LOAD (mA) V –6 –4 –2 0 OUT –500 –1000 10 0%
5 01 0- 53 12 -0 00 30 Figure 15. Typical Load Regulation Characteristics 005 Figure 12. Fine-Scale Setting for Transient Load
TEMPERATURE PERFORMANCE
In some applications, a varying load may be both resistive and The AD587 is designed for precision reference applications capacitive in nature, or the load may be connected to the where temperature performance is critical. Extensive tempera- AD587 by a long capacitive cable. ture testing ensures that the device’s high level of performance is Figure 14 displays the output amplifier characteristics driving a maintained over the operating temperature range. 1000 pF, 0 mA to 10 mA load. Some confusion exists in the area of defining and specifying reference voltage error over temperature. Historically, references have been characterized using a maximum deviation per degree
VOUT 7.0V CL
Celsius, such as ppm/°C. However, because of nonlinearities in
1000pF 1kΩ
temperature characteristics that originated in standard Zener references (such as S-type characteristics), most manufacturers
V 10V L AD587 0V
have begun to use a maximum limit error-band approach to -013 specify devices. This technique involves the measurement of the 530 00 output at three or more temperatures to specify an output Figure 13. Capacitive Load Transient/Response Test Circuit voltage error band.
10V 200mV 1µs CL = 0 100 90 C 10 L = 1000pF 0%
4
VL
-01 0 53 00 Figure 14. Output Response with Capacitive Load
LOAD REGULATION
The AD587 has excellent load regulation characteristics. Figure 15 shows that varying the load several milliamperes changes the output by only a few microvolts. Rev. H | Page 8 of 12 Document Outline FEATURES FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS THEORY OF OPERATION APPLYING THE AD587 NOISE PERFORMANCE AND REDUCTION TURN-ON TIME DYNAMIC PERFORMANCE LOAD REGULATION TEMPERATURE PERFORMANCE NEGATIVE REFERENCE VOLTAGE FROM AN AD587 APPLICATIONS INFORMATION USING THE AD587 WITH CONVERTERS 10 V Reference with Multiplying CMOS DACs or ADCs Precision Current Source Precision High Current Supply OUTLINE DIMENSIONS ORDERING GUIDE