ADR421BR Analog Devices Inc, ADR421BR Datasheet
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ADR421BR
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ADR421BR Summary of contents
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FEATURES Low noise (0 Hz) ADR420: 1.75 μV p-p ADR421: 1.75 μV p-p ADR423: 2.0 μV p-p ADR425: 3.4 μV p-p Low temperature coefficient: 3 ppm/°C Long-term stability: 50 ppm/1000 hours Load regulation: 70 ppm/mA Line regulation: ...
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ADR420/ADR421/ADR423/ADR425 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Pin Configuration............................................................................. 1 General Description ......................................................................... 1 ADR42x Products............................................................................. 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 ADR420 Electrical Specifications............................................... 3 ADR421 Electrical Specifications............................................... 4 ADR423 Electrical Specifications............................................... 5 ADR425 Electrical Specifications............................................... ...
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SPECIFICATIONS ADR420 ELECTRICAL SPECIFICATIONS 25°C, unless otherwise noted Table 2. Parameter OUTPUT VOLTAGE A Grade B Grade INITIAL ACCURACY A Grade B Grade TEMPERATURE COEFFICIENT A Grade B Grade ...
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ADR420/ADR421/ADR423/ADR425 ADR421 ELECTRICAL SPECIFICATIONS 25°C, unless otherwise noted Table 3. Parameter OUTPUT VOLTAGE A Grade B Grade INITIAL ACCURACY A Grade B Grade TEMPERATURE COEFFICIENT A Grade B Grade ...
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ADR423 ELECTRICAL SPECIFICATIONS 25°C, unless otherwise noted Table 4. Parameter OUTPUT VOLTAGE A Grade B Grade INITIAL ACCURACY A Grade B Grade TEMPERATURE COEFFICIENT A Grade B Grade SUPPLY ...
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ADR420/ADR421/ADR423/ADR425 ADR425 ELECTRICAL SPECIFICATIONS 25°C, unless otherwise noted Table 5. Parameter OUTPUT VOLTAGE A Grade B Grade INITIAL ACCURACY A Grade B Grade TEMPERATURE COEFFICIENT A Grade B Grade ...
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ABSOLUTE MAXIMUM RATINGS These ratings apply at 25°C, unless otherwise noted. Table 6. Parameter Supply Voltage Output Short-Circuit Duration to GND Storage Temperature Range Operating Temperature Range Junction Temperature Range Lead Temperature (Soldering, 60 sec) Stresses above those listed under ...
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ADR420/ADR421/ADR423/ADR425 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS Table 8. Pin Function Descriptions Pin No. Mnemonic Description Test Pin. There are actual connections in TP pins, but they are reserved for factory testing purposes. Users should not connect anything ...
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TYPICAL PERFORMANCE CHARACTERISTICS 2.0495 2.0493 2.0491 2.0489 2.0487 2.0485 2.0483 2.0481 2.0479 2.0477 2.0475 –40 – TEMPERATURE (°C) Figure 3. ADR420 Typical Output Voltage vs. Temperature 2.5015 2.5013 2.5011 2.5009 2.5007 2.5005 2.5003 2.5001 2.4999 2.4997 2.4995 –40 ...
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ADR420/ADR421/ADR423/ADR425 0.55 0.50 0.45 0.40 0.35 0.30 0. INPUT VOLTAGE (V) Figure 9. ADR423 Supply Current vs. Input Voltage 0.55 0.50 0.45 0.40 0.35 0.30 0. INPUT VOLTAGE (V) Figure 10. ADR425 Supply ...
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V = 4.5V TO 15V –40 – TEMPERATURE (°C) Figure 15. ADR420 Line Regulation vs. Temperature 15V ...
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ADR420/ADR421/ADR423/ADR425 2.5 2.0 –40°C +25°C 1.5 +125°C 1.0 0 LOAD CURRENT (mA) Figure 21. ADR423 Minimum Input/Output Voltage Differential vs. Load Current 2.5 2.0 –40°C +25°C 1.5 +125°C 1.0 0 ...
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C = 0µF BYPASS LINE INTERRUPTION V IN 500mV/DIV V 500mV/DIV OUT TIME (100µs/DIV) Figure 27. ADR421 Line Transient Response 0.1µF BYPASS LINE INTERRUPTION V IN 500mV/DIV V 500mV/DIV OUT TIME (100µs/DIV) Figure 28. ADR421 Line ...
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ADR420/ADR421/ADR423/ADR425 C = 0.01µ INPUT CAP V OUT V IN TIME (4µs/DIV) Figure 33. ADR421 Turn-Off Response C = 0.01µ INPUT CAP V OUT V IN TIME (4µs/DIV) Figure 34. ADR421 Turn-On Response C = 0.1µF ...
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TERMINOLOGY Temperature Coefficient The change of output voltage over the operating temperature range is normalized by the output voltage at 25°C, and expressed in ppm/° − ° OUT TCV ppm / ...
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ADR420/ADR421/ADR423/ADR425 THEORY OF OPERATION The ADR42x series of references uses a reference generation technique known as XFET (eXtra implanted junction FET). This technique yields a reference with low supply current, good thermal hysteresis, and exceptionally low noise. The core of ...
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APPLICATIONS OUTPUT ADJUSTMENT The ADR42x trim terminal can be used to adjust the output voltage over a ±0.5% range. This feature allows the system designer to trim system errors out by setting the reference to a voltage other than the ...
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ADR420/ADR421/ADR423/ADR425 HIGH VOLTAGE FLOATING CURRENT SOURCE The circuit in Figure 43 can be used to generate a floating current source with minimal self-heating. This particular configuration can operate on high supply voltages determined by the breakdown voltage of the N-channel ...
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PROGRAMMABLE CURRENT SOURCE Together with a digital potentiometer and a Howland current pump, the ADR425 forms the reference source for a program- mable current as + ⎛ ⎞ ⎜ ⎟ ⎝ ⎠ × I ...
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ADR420/ADR421/ADR423/ADR425 PRECISION VOLTAGE REFERENCE FOR DATA CONVERTERS The ADR42x family has a number of features that make it ideal for use with ADCs and DACs. The exceptionally low noise, tight temperature coefficient, and high accuracy characteristics make the ADR42x ideal ...
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OUTLINE DIMENSIONS 0.25 (0.0098) 0.10 (0.0040) COPLANARITY 5.00 (0.1968) 4.80 (0.1890 6.20 (0.2441) 4.00 (0.1574) 1 5.80 (0.2284) 3.80 (0.1497) 4 1.27 (0.0500) BSC 1.75 (0.0688) 1.35 (0.0532) 8° 0° 0.51 (0.0201) 0.10 0.31 (0.0122) 0.25 (0.0098) SEATING ...
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... ADR421AR 2.50 3 ADR421AR-REEL7 2. ADR421ARZ 2.50 3 ADR421ARZ-REEL7 1 2.50 3 ADR421ARM 2.50 3 ADR421ARM-REEL7 2. ADR421ARMZ 2. ADR421ARMZ-REEL7 2.50 3 ADR421BR 2.50 1 ADR421BR-REEL7 2. ADR421BRZ 2. ADR421BRZ-REEL7 2.50 1 ADR423AR 3.00 4 ADR423AR-REEL7 3. ADR423ARZ 3. ADR423ARZ-REEL7 3.00 4 ADR423ARM 3.00 4 ADR423ARM-REEL7 3.00 4 ADR423BR 3.00 1.5 ADR423BR-REEL7 3.00 1.5 1 ADR423ARMZ 3. ADR423ARMZ-REEL7 3.00 4 ADR423BRZ 1 3.00 1.5 ...
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NOTES ADR420/ADR421/ADR423/ADR425 Rev Page ...
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ADR420/ADR421/ADR423/ADR425 NOTES ©2001–2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. C02432-0-6/07(H) Rev Page ...