ADR420

ADR420/ADR421/ADR423/ADR425 (Rev. J)

Document overview

• Manufacturer or author: Analog Devices, Inc.
• PDF pages: 24

Technical content

Ultraprecision, Low Noise, 2.048 V/2.500 V/ 3.00 V/5.00 V XFET® Voltage References Data Sheet ADR420/ADR421/ADR423/ADR425 Rev. J Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Tel: 781.329.4700 ©2001–2013 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com

FEATURES

Low noise (0.1 Hz to 10 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: 35 ppm/V Low hysteresis: 40 ppm typical Wide operating range ADR420: 4 V to 18 V ADR421: 4.5 V to 18 V ADR423: 5 V to 18 V ADR425: 7 V to 18 V Quiescent current: 0.5 mA maximum High output current: 10 mA Wide temperature range: −40°C to +125°C

APPLICATIONS

Precision data acquisition systems High resolution converters Battery-powered instrumentation Portable medical instruments Industrial process control systems Precision instruments Optical network control circuits PIN CONFIGURATION 02432-001 NIC = NO INTERNAL CONNECTION TP = TEST PIN (DO NOT CONNECT) ADR420/ ADR421/ ADR423/ ADR425 TOP VIEW (Not to Scale) TP 1 VIN 2 NIC 3 GND 4 TP8 NIC7 VOUT6 TRIM5 Figure 1. 8-Lead SOIC, 8-Lead MSOP stability in SOIC and MSOP footprints. the buried Zener references. applications such as optical networks and medical equipment. 8-lead SOIC or 30% smaller, 8-lead MSOP packages.

ADR420/ADR421/ADR423/ADR425 Data Sheet Rev. J | Page 2 of 24 TABLE OF CONTENTS Reference for Converters in Optical Network Control

Data Sheet ADR420/ADR421/ADR423/ADR425 Rev. J | Page 3 of 24

REVISION HISTORY

12/13—Rev. I to Rev. J 5/11—Rev. H to Rev. I Deleted A Negative Precision Reference Without Precision 6/07—Rev. G to Rev. H 6/05—Rev. F to Rev. G 2/05—Rev. E to Rev. F 7/04—Rev. D to Rev. E 3/04—Rev. C to Rev. D 1/03—Rev. B to Rev. C 3/02—Rev. A to Rev. B 10/01—Rev. 0 to Rev. A Addition of ADR423 and ADR425 to 5/01—Revision 0: Initial Version

ADR420/ADR421/ADR423/ADR425 Data Sheet Rev. J | Page 4 of 24 SPECIFICATIONS ADR420 ELECTRICAL SPECIFICATIONS VIN = 5.0 V to 15.0 V , TA = 25°C, unless otherwise noted. Table 2. Parameter Symbol Conditions Min Typ Max Unit OUTPUT VOLTAGE VOUT A Grade 2.045 2.048 2.051 V B Grade 2.047 2.048 2.049 V INITIAL ACCURACY1 VOUTERR A Grade −3 +3 mV −0.15 +0.15 % B Grade −1 +1 mV −0.05 +0.05 % TEMPERATURE COEFFICIENT TCVOUT −40°C < TA < +125°C A Grade 2 10 ppm°C B Grade 1 3 ppm/°C SUPPLY VOLTAGE HEADROOM VIN − VOUT 2 V LINE REGULATION ∆VOUT/∆VIN VIN = 5 V to 18 V, 10 35 ppm/V LOAD REGULATION ∆VOUT/∆IL IL = 0 mA to 10 mA, 70 ppm/mA QUIESCENT CURRENT IIN No load 390 500 µA −40°C < TA < +125°C 600 µA VOLTAGE NOISE eN p-p 0.1 Hz to 10 Hz 1.75 µV p-p VOLTAGE NOISE DENSITY eN 1 kHz 60 nV/√Hz TURN-ON SETTLING TIME tR 10 µs LONG-TERM STABILITY ∆VOUT 1000 hours 50 ppm OUTPUT VOLTAGE HYSTERESIS VOUT_HYS 40 ppm RIPPLE REJECTION RATIO RRR fIN = 1 kHz −75 dB SHORT CIRCUIT TO GND ISC 27 mA 1 Initial accuracy does not include shift due to solder heat effect.

Data Sheet ADR420/ADR421/ADR423/ADR425 Rev. J | Page 5 of 24 ADR421 ELECTRICAL SPECIFICATIONS VIN = 5.0 V to 15.0 V , TA = 25°C, unless otherwise noted. Table 3. Parameter Symbol Conditions Min Typ Max Unit OUTPUT VOLTAGE VOUT A Grade 2.497 2.500 2.503 V B Grade 2.499 2.500 2.501 V INITIAL ACCURACY1 VOUTERR A Grade −3 +3 mV −0.12 +0.12 % B Grade −1 +1 mV −0.04 +0.04 % TEMPERATURE COEFFICIENT TCVOUT −40°C < TA < +125°C A Grade 2 10 ppm/°C B Grade 1 3 ppm/°C SUPPLY VOLTAGE HEADROOM VIN − VOUT 2 V LINE REGULATION ∆VOUT/∆VIN VIN = 5 V to 18 V, 10 35 ppm/V LOAD REGULATION ∆VOUT/∆IL IL = 0 mA to 10 mA, 70 ppm/mA QUIESCENT CURRENT IIN No load 390 500 µA −40°C < TA < +125°C 600 µA VOLTAGE NOISE eN p-p 0.1 Hz to 10 Hz 1.75 µV p-p VOLTAGE NOISE DENSITY eN 1 kHz 80 nV/√Hz TURN-ON SETTLING TIME tR 10 µs LONG-TERM STABILITY ∆VOUT 1000 hours 50 ppm OUTPUT VOLTAGE HYSTERESIS VOUT_HYS 40 ppm RIPPLE REJECTION RATIO RRR fIN = 1 kHz −75 dB SHORT CIRCUIT TO GND ISC 27 mA 1 Initial accuracy does not include shift due to solder heat effect.

ADR420/ADR421/ADR423/ADR425 Data Sheet Rev. J | Page 6 of 24 ADR423 ELECTRICAL SPECIFICATIONS VIN = 5.0 V to 15.0 V , TA = 25°C, unless otherwise noted. Table 4. Parameter Symbol Conditions Min Typ Max Unit OUTPUT VOLTAGE VOUT A Grade 2.996 3.000 3.004 V B Grade 2.9985 3.000 3.0015 V INITIAL ACCURACY1 VOUTERR A Grade −4 +4 mV −0.13 +0.13 % B Grade −1.5 +1.5 mV −0.04 +0.04 % TEMPERATURE COEFFICIENT TCVOUT −40°C < TA < +125°C A Grade 2 10 ppm/°C B Grade 1 3 ppm/°C SUPPLY VOLTAGE HEADROOM VIN − VOUT 2 V LINE REGULATION ∆VOUT/∆VIN VIN = 5 V to 18 V, 10 35 ppm/V LOAD REGULATION ∆VOUT/∆IL IL = 0 mA to 10 mA, 70 ppm/mA QUIESCENT CURRENT IIN No load 390 500 µA −40°C < TA < +125°C 600 µA VOLTAGE NOISE eN p-p 0.1 Hz to 10 Hz 2 µV p-p VOLTAGE NOISE DENSITY eN 1 kHz 90 nV/√Hz TURN-ON SETTLING TIME tR 10 µs LONG-TERM STABILITY ∆VOUT 1000 hours 50 ppm OUTPUT VOLTAGE HYSTERESIS VOUT_HYS 40 ppm RIPPLE REJECTION RATIO RRR fIN = 1 kHz −75 dB SHORT CIRCUIT TO GND ISC 27 mA 1 Initial accuracy does not include shift due to solder heat effect.

Data Sheet ADR420/ADR421/ADR423/ADR425 Rev. J | Page 7 of 24 ADR425 ELECTRICAL SPECIFICATIONS VIN = 7.0 V to 15.0 V , TA = 25°C, unless otherwise noted. Table 5. Parameter Symbol Conditions Min Typ Max Unit OUTPUT VOLTAGE VOUT A Grade 4.994 5.000 5.006 V B Grade 4.998 5.000 5.002 V INITIAL ACCURACY1 VOUTERR A Grade −6 +6 mV −0.12 +0.12 % B Grade −2 +2 mV −0.04 +0.04 % TEMPERATURE COEFFICIENT TCVOUT A Grade −40°C < TA < +125°C 2 10 ppm/°C B Grade 1 3 ppm/°C SUPPLY VOLTAGE HEADROOM VIN − VO 2 V LINE REGULATION ∆VO/∆VIN VIN = 7 V to 18 V, 10 35 ppm/V LOAD REGULATION ∆VO/∆IL IL = 0 mA to 10 mA, 70 ppm/mA QUIESCENT CURRENT IIN No load 390 500 µA −40°C < TA < +125°C 600 µA VOLTAGE NOISE eN p-p 0.1 Hz to 10 Hz 3.4 µV p-p V O LTAGE NOISE DENSITY eN 1 kHz 110 nV/√Hz TURN-ON SETTLING TIME tR 10 µs LONG-TERM STABILITY ∆VO 1000 hours 50 ppm OUTPUT VOLTAGE HYSTERESIS VO_HYS 40 ppm RIPPLE REJECTION RATIO RRR fIN = 1 kHz −75 dB SHORT CIRCUIT TO GND ISC 27 mA 1 Initial accuracy does not include shift due to solder heat effect.

ADR420/ADR421/ADR423/ADR425 Data Sheet Rev. J | Page 8 of 24 ABSOLUTE MAXIMUM RATINGS These ratings apply at 25°C, unless otherwise noted. Table 6. Parameter Rating Supply Voltage 18 V Output Short-Circuit Duration to GND Indefinite Storage Temperature Range −65°C to +150°C Operating Temperature Range −40°C to +125°C Junction Temperature Range −65°C to +150°C Lead Temperature (Soldering, 60 sec) 300°C Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. THERMAL RESISTANCE θJA is specified for the worst-case conditions, that is, θJA is specified for devices soldered in the circuit board for surface- mount packages. Table 7. Package Type θJA θJC Unit 8-Lead MSOP (RM) 190 44 °C/W 8-Lead SOIC (R) 130 43 °C/W ESD CAUTION

Figure 2. 8-Lead SOIC, 8-Lead MSOP Pin Configuration Table 8. Pin Function Descriptions connect anything to TP pins; otherwise, the device may not function properly. 3, 7 NIC No Internal Connect. NICs have no internal connections.

ADR420/ADR421/ADR423/ADR425 Data Sheet Rev. J | Page 16 of 24 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/°C as   610/       1 2OUT 1OUT2OUT OUT T T C 25 V T V T VC ppmTCV where: VOUT (25°C) = VOUT at 25°C. VOUT (T1) = VOUT at Temperature 1. VOUT (T2) = VOUT at Temperature 2. Line Regulation The change in output voltage due to a specified change in input voltage. It includes the effects of self-heating. Line regulation is expressed in either percent per volt, parts per million per volt, or microvolts per volt change in input voltage. Load Regulation The change in output voltage due to a specified change in load current. It includes the effects of self-heating. Load regulation is expressed in either microvolts per milliampere, parts per million per milliampere, or ohms of dc output resistance. Long-T erm Stability Typical shift of output voltage at 25°C on a sample of parts subjected to operation life test of 1000 hours at 125°C. 610 0OUT 1OUT0OUT OUT t V t V t Vppm V where: VOUT (t0) = VOUT at 25°C at Time 0. VOUT (t1) = VOUT at 25°C after 1000 hours operation at 125°C. Thermal Hysteresis The change of output voltage after the device is cycled through temperatures from +25°C to −40°C to +125°C and back to +25°C. This is a typical value from a sample of parts put through such a cycle.   TC OUTOUTHYS OUT V C 25 VV __      _ 10   C 25 V V C 25 VppmV OUT TC OUTOUT HYS OUT where: VOUT (25°C) = VOUT at 25°C. VOUT_TC = VOUT at 25°C after temperature cycle at +25°C to −40°C to +125°C and back to +25°C. Input Capacitor Input capacitors are not required on the ADR42x. There is no limit for the value of the capacitor used on the input, but a 1 μF to 10 μF capacitor on the input improves transient response in applications where the supply suddenly changes. An addi- tional 0.1 μF capacitor in parallel also helps to reduce noise from the supply. Output Capacitor The ADR42x do not need output capacitors for stability under any load condition. An output capacitor, typically 0.1 μF, filters out any low level noise voltage and does not affect the operation of the part. On the other hand, the load transient response can be improved with an additional 1 μF to 10 μF output capacitor in parallel. A capacitor here acts as a source of stored energy for 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.

REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. Figure 50. 8-Lead Standard Small Outline Package [SOIC_N]

0.65 BSC

1.10 MAX

Figure 51. 8-Lead Mini Small Outline Package [MSOP]

Data Sheet ADR420/ADR421/ADR423/ADR425 Rev. J | Page 23 of 24 ORDERING GUIDE Model1 Output Voltage, VOUT (V) Initial Accuracy Temperature Coefficient (ppm/°C) Temperature Range Package

Description

mV % ADR420ARZ 2.048 3 0.15 10 −40°C to +125°C 8-Lead SOIC_N R-8 ADR420ARZ-REEL7 2.048 3 0.15 10 −40°C to +125°C 8-Lead SOIC_N R-8 ADR420ARMZ 2.048 3 0.15 10 −40°C to +125°C 8-Lead MSOP RM-8 L0C ADR420ARMZ-REEL7 2.048 3 0.15 10 −40°C to +125°C 8-Lead MSOP RM-8 L0C ADR420BRZ 2.048 1 0.05 3 −40°C to +125°C 8-Lead SOIC_N R-8 ADR420BRZ-REEL7 2.048 1 0.05 3 −40°C to +125°C 8-Lead SOIC_N R-8 ADR421ARZ 2.50 3 0.12 10 −40°C to +125°C 8-Lead SOIC_N R-8 ADR421ARZ-REEL7 2.50 3 0.12 10 −40°C to +125°C 8-Lead SOIC_N R-8 ADR421ARMZ 2.50 3 0.12 10 −40°C to +125°C 8-Lead MSOP RM-8 R06 ADR421ARMZ-REEL7 2.50 3 0.12 10 −40°C to +125°C 8-Lead MSOP RM-8 R06 ADR421BR 2.50 1 0.04 3 −40°C to +125°C 8-Lead SOIC_N R-8 ADR421BR-REEL7 2.50 1 0.04 3 −40°C to +125°C 8-Lead SOIC_N R-8 ADR421BRZ 2.50 1 0.04 3 −40°C to +125°C 8-Lead SOIC_N R-8 ADR421BRZ-REEL7 2.50 1 0.04 3 −40°C to +125°C 8-Lead SOIC_N R-8 ADR423ARZ 3.00 4 0.13 10 −40°C to +125°C 8-Lead SOIC_N R-8 ADR423ARZ-REEL7 3.00 4 0.13 10 −40°C to +125°C 8-Lead SOIC_N R-8 ADR423ARMZ 3.00 4 0.13 10 −40°C to +125°C 8-Lead MSOP RM-8 R0U ADR423ARMZ-REEL7 3.00 4 0.13 10 −40°C to +125°C 8-Lead MSOP RM-8 R0U ADR423BRZ 3.00 1.5 0.04 3 −40°C to +125°C 8-Lead SOIC_N R-8 ADR423BRZ-REEL7 3.00 1.5 0.04 3 −40°C to +125°C 8-Lead SOIC_N R-8 ADR425ARZ 5.00 6 0.12 10 −40°C to +125°C 8-Lead SOIC_N R-8 ADR425ARZ-REEL7 5.00 6 0.12 10 −40°C to +125°C 8-Lead SOIC_N R-8 ADR425ARMZ 5.00 6 0.12 10 −40°C to +125°C 8-Lead MSOP RM-8 R7A# ADR425ARMZ-REEL7 5.00 6 0.12 10 −40°C to +125°C 8-Lead MSOP RM-8 R7A# ADR425BRZ 5.00 2 0.04 3 −40°C to +125°C 8-Lead SOIC_N R-8 ADR425BRZ-REEL7 5.00 2 0.04 3 −40°C to +125°C 8-Lead SOIC_N R-8 1 Z = RoHS Compliant Part. # denotes RoHS-compliant product may be top or bottom marked.

ADR420/ADR421/ADR423/ADR425 Data Sheet Rev. J | Page 24 of 24 NOTES ©2001–2013 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the prop erty of their respective owners. D02432-0-12/13(J) ©2001–2013 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the prop erty of their respective owners. D02432-0-12/13(J)