ADR421ARMZ Analog Devices Inc, ADR421ARMZ Datasheet

ADR421ARMZ

Manufacturer Part Number

ADR421ARMZ

Description

IC VREF PREC 2.5V 10MA 8-MSOP

Manufacturer

Analog Devices Inc

Series

XFET®r

Datasheet

1.ADR425ARZ.pdf (24 pages)

Specifications of ADR421ARMZ

Temperature Coefficient

10ppm/°C

Design Resources

40 Channels of Programmable Voltage with Excellent Temperature Drift Performance Using AD5380 (CN0007) 40 Channels of Programmable Voltage with Excellent Temperature Drift Performance Using AD5381 (CN0010) 32 Channels of Programmable Voltage with Excellent Temperature Drift Performance Using AD5382 (CN0011) 32 Channels of Programmable Voltage with Excellent Temperature Drift Performance Using AD5383 (CN0014) 8 to 16 Channels of Programmable Voltage with Excellent Temperature Drift Performance Using AD5390/1/2 (CN0029) High Precision Digital-to-Analog Conversion Using the 16-Bit AD5542/1, ADR421, and AD8628 (CN0079) 16 Channels of Programmable Output Span Using AD5360 (CN0131) Layout Considerations for an Expandable Multichannel Simultaneous Sampling Data Acquisition System Based on AD7606 (CN0148) 40 Channels of Programmable Output Span Using AD5371 (CN0149) Software Calibrated, 1 MHz to 8 GHz, 70 dB RF Power Measurement System Using AD8318 (CN0150) How to Achieve High Precision Voltage Level Setting Using AD5541A/42A (CN0169)

Reference Type

Series

Voltage - Output

2.5V

Tolerance

±0.12%

Voltage - Input

4.5 ~ 18 V

Number Of Channels

Current - Quiescent

500µA

Current - Output

10mA

Operating Temperature

-40°C ~ 125°C

Mounting Type

Surface Mount

Package / Case

8-MSOP, Micro8™, 8-uMAX, 8-uSOP,

Topology

Series

Input Voltage

4.5V To 18V

Reference Voltage

2.5V

Reference Voltage Tolerance

3mV

Voltage Reference Case Style

MSOP

No. Of Pins

Fixed / Adjust / Prog

Precision

Output Voltage (max)

2.5V

Reference Voltage Accuracy (max)

0.13

Line Regulation

35ppm/V

Load Regulation

70ppm/mA

Input Voltage (max)

18V

Operating Temp Range

-40C to 125C

Operating Temperature Classification

Automotive

Mounting

Surface Mount

Pin Count

Package Type

MSOP

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Current - Cathode

Lead Free Status / Rohs Status

Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

ADR421ARMZ

Manufacturer:

ANALOG

Quantity:

Company:

Meier Automation Equipment Co., Limited

Part Number:

ADR421ARMZ

Manufacturer:

Quantity:

20 000

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FEATURES

Low noise (0.1 Hz to 10 Hz)

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

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

ADR42x PRODUCTS

Table 1.

Model

ADR420

ADR421

ADR423

ADR425

Rev. H

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.

ADR420: 1.75 μV p-p

ADR421: 1.75 μV p-p

ADR423: 2.0 μV p-p

ADR425: 3.4 μV p-p

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

Output Voltage, V

2.048

2.50

3.00

5.00

OUT

(V)

Ultraprecision, Low Noise, 2.048 V/2.500 V/

1, 3

1.5, 4

2, 6

3.00 V/5.00 V XFET

Initial Accuracy

0.05, 0.15

0.04, 0.12

0.04, 0.13

0.04, 0.12

ADR420/ADR421/ADR423/ADR425

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

GENERAL DESCRIPTION

The ADR42x are a series of ultraprecision, second generation

eXtra implanted junction FET (XFET) voltage references

featuring low noise, high accuracy, and excellent long-term

stability in SOIC and MSOP footprints.

Patented temperature drift curvature correction technique and

XFET technology minimize nonlinearity of the voltage change

with temperature. The XFET architecture offers superior

accuracy and thermal hysteresis to the band gap references. It

also operates at lower power and lower supply headroom than

the buried Zener references.

The superb noise and the stable and accurate characteristics

of the ADR42x make them ideal for precision conversion

applications such as optical networks and medical equipment.

The ADR42x trim terminal can also be used to adjust the out-

put voltage over a ±0.5% range without compromising any

other performance. The ADR42x series voltage references

offer two electrical grades and are specified over the extended

industrial temperature range of −40°C to +125°C. Devices have

8-lead SOIC or 30% smaller, 8-lead MSOP packages.

Temperature Coefficient (ppm/°C)

3, 10

Figure 1. 8-Lead SOIC, 8-Lead MSOP

TP = TEST PIN (DO NOT CONNECT)

NIC = NO INTERNAL CONNECTION

PIN CONFIGURATION

GND

NIC

Voltage References

(Not to Scale)

ADR420/

ADR421/

ADR423/

ADR425

TOP VIEW

NIC

TRIM

OUT

www.analog.com

Related parts for ADR421ARMZ

ADR421ARMZ Summary of contents

Page 1

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: ...

Page 2

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............................................... ...

Page 3

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 ...

Page 4

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 ...

Page 5

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 ...

Page 6

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 ...

Page 7

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 ...

Page 8

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 ...

Page 9

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 ...

Page 10

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 ...

Page 11

V = 4.5V TO 15V –40 – TEMPERATURE (°C) Figure 15. ADR420 Line Regulation vs. Temperature 15V ...

Page 12

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 ...

Page 13

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 ...

Page 14

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 ...

Page 15

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 / ...

Page 16

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 ...

Page 17

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 ...

Page 18

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 ...

Page 19

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 ...

Page 20

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 ...

Page 21

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 ...

Page 22

... 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. 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 ...

Page 23

NOTES ADR420/ADR421/ADR423/ADR425 Rev Page ...

Page 24

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