ADR420 Analog Devices, ADR420 Datasheet
ADR420
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ADR420 Summary of contents
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... Low temperature coefficient: 3 ppm/°C Long-term stability: 50 ppm/1000 hours Load regulation: 70 ppm/mA Line regulation: 35 ppm/V Low hysteresis: 40 ppm typical Wide operating range ADR420 ADR421: 4 ADR423 ADR425 Quiescent current: 0.5 mA maximum High output current Wide temperature range: − ...
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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............................................... 6 Absolute Maximum Ratings............................................................ 7 Thermal Resistance ...................................................................... 7 ESD Caution.................................................................................. 7 Pin Configurations and Function Descriptions ........................... 8 Typical Performance Characteristics ............................................. 9 Terminology ...
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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 SUPPLY VOLTAGE HEADROOM LINE REGULATION LOAD REGULATION QUIESCENT CURRENT VOLTAGE NOISE VOLTAGE NOISE DENSITY TURN-ON SETTLING TIME ...
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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 SUPPLY VOLTAGE HEADROOM LINE REGULATION LOAD REGULATION QUIESCENT CURRENT VOLTAGE NOISE VOLTAGE NOISE DENSITY TURN-ON SETTLING TIME ...
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... IN −40°C < T < +125° p-p 0 kHz ∆V 1000 hours OUT V OUT_HYS RRR kHz Rev Page ADR420/ADR421/ADR423/ADR425 Min Typ Max 2.996 3.000 3.004 2.9985 3.000 3.0015 −4 +4 −0.13 +0.13 −1.5 +1.5 −0.04 +0. ...
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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 SUPPLY VOLTAGE HEADROOM LINE REGULATION LOAD REGULATION QUIESCENT CURRENT VOLTAGE NOISE VOLTAGE NOISE DENSITY TURN-ON SETTLING TIME ...
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... Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ADR420/ADR421/ADR423/ADR425 THERMAL RESISTANCE θ is specified for the worst-case conditions, that is, θ JA ...
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... NIC No Internal Connect. NICs have no internal connections. 4 GND Ground Pin = TRIM Trim Terminal. It can be used to adjust the output voltage over a ±0.5% range without affecting the temperature coefficient Output Voltage. OUT TP ADR420 ADR421/ V NIC ADR423/ ADR425 V 6 NIC ...
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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 – TEMPERATURE (°C) Figure 4 ...
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... I = 0mA TO 5mA 4. –40 – TEMPERATURE (°C) Figure 11. ADR420 Load Regulation vs. Temperature +125°C +25°C –40° +125°C +25°C –40° 110 125 Rev Page 0mA TO 5mA L 60 ...
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... V = 4.5V TO 15V –40 – TEMPERATURE (°C) Figure 15. ADR420 Line Regulation vs. Temperature 15V –40 – TEMPERATURE (°C) Figure 16. ADR421 Line Regulation vs. Temperature 15V –40 –10 ...
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... SAMPLE SIZE – 160 Rev Page TIME (1s/DIV) Figure 24. ADR421 Typical Noise Voltage 0 TIME (1s/DIV) Figure 25. Typical Noise Voltage kHz 1k ADR425 100 ADR420 10 10 100 1k FREQUENCY (Hz) Figure 26. Voltage Noise Density vs. Frequency ADR423 ADR421 10k ...
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... TIME (100µs/DIV) Figure 28. ADR421 Line Transient Response, C BYPASS C = 0µF 1mA LOAD L V OUT LOAD OFF LOAD ON TIME (100µs/DIV) Figure 29. ADR421 Load Transient Response ADR420/ADR421/ADR423/ADR425 C = 100nF L V OUT LOAD ON Figure 30. ADR421 Load Transient Response, C BYPASS C = 0.01µ LOAD = 0.1 μ ...
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... Rev Page ADR425 ADR423 ADR421 ADR420 100 1k 10k FREQUENCY (Hz) Figure 36. Output Impedance vs. Frequency 100 1k 10k 100k FREQUENCY (Hz) Figure 37. Ripple Rejection vs. Frequency 100k 1M ...
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... A capacitor here acts as a source of stored energy for 10 sudden increase in load current. The only parameter that degrades by adding an output capacitor is the turn-on time, which depends on the size of the selected capacitor. Rev Page ADR420/ADR421/ADR423/ADR425 ( ) = ° − ...
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... Figure 39. Basic Voltage Reference Configuration NOISE PERFORMANCE The noise generated by ADR42x references is typically less than 2 μV p-p over the 0 band for the ADR420, ADR421, and ADR423. Figure 24 shows the 0 noise of the ADR421, which is only 1.75 μV p-p. The noise measurement is made with a band-pass filter made of a 2-pole high-pass filter with a corner frequency at 0 ...
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... WITHOUT PRECISION RESISTORS many current-output CMOS DAC applications where 10kΩ 10kΩ (ADR420) the output signal voltage must be of the same polarity as the 15kΩ (ADR421) reference voltage, a current-switching DAC is often recon- figured into a voltage-switching DAC with a 1.25 V reference amp, a pair of resistors, and an additional operational amplifier at the output to reinvert the signal ...
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... ADR42x imperative to match the resistance toler- 2N3904 ance and the temperature coefficient of all components 2.10kΩ – × ERROR L Rev Page ADR420/ V OUT SENSE ADR421 ADR423/ R ADR425 LW V OUT A1 FORCE V OUT 6 GND R ...
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... OP2177 V– 10Ω 3R2 3R2 R2 A 1kΩ 3R2 LOAD respectively able to deliver Rev Page ADR420/ADR421/ADR423/ADR425 REF ⎛ ⎞ R2 × + ⎜ ⎟ REF ⎝ ⎠ REF ⎛ ⎞ × ⎜ ...
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... ADC, calibration microcontroller with on-chip static RAM, clock oscillator, and serial communications port. +5V ANALOG SUPPLY 0.1µF 10µF AD7701 OUT REF ADR420/ 0.1µF ADR421/ ADR423/ ADR425 GND RANGES BP/UP SELECT CAL CALIBRATE ANALOG A IN INPUT ANALOG AGND GROUND 0.1µ ...
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... Figure 51. 8-Lead Standard Small Outline Package [SOIC_N] Narrow Body (R-8) Dimensions shown in millimeters and (inches) 3.20 3.00 2.80 5. 3.20 4.90 3.00 4.65 2. PIN 1 0.65 BSC 0.95 0.85 1.10 MAX 0.75 0.15 0.38 0.23 0.00 0.22 0.08 SEATING COPLANARITY PLANE 0.10 COMPLIANT TO JEDEC STANDARDS MO-187-AA Figure 52. 8-Lead Mini Small Outline Package [MSOP] (RM-8) Dimensions shown in millimeters Rev Page ADR420/ADR421/ADR423/ADR425 0.50 (0.0196) 45° 0.25 (0.0099) 1.27 (0.0500) 0.40 (0.0157) 0.80 8° 0.60 0° 0.40 ...
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... Model V (V) mV OUT ADR420AR 2.048 3 ADR420AR-REEL7 2.048 3 1 ADR420ARZ 2.048 3 1 ADR420ARZ-REEL7 2.048 3 ADR420ARM 2.048 3 ADR420ARM-REEL7 2.048 3 1 ADR420ARMZ 2.048 3 1 ADR420ARMZ-REEL7 2.048 3 ADR420BR 2.048 1 ADR420BR-REEL7 2.048 1 1 ADR420BRZ 2.048 1 1 ADR420BRZ-REEL7 2.048 1 ADR421AR 2.50 3 ADR421AR-REEL7 2. ADR421ARZ 2.50 3 ADR421ARZ-REEL7 1 2.50 3 ADR421ARM 2.50 3 ADR421ARM-REEL7 2.50 ...
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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 ...