ADR421AR Analog Devices Inc, ADR421AR Datasheet - Page 2

• Manufacturer Part Number: ADR421AR
• Description: IC REF PREC LONOISE 2.50V 8-SOIC
• Manufacturer: Analog Devices Inc
• Series: XFET®r

Specifications of ADR421AR

• Mounting Type: Surface Mount
• Rohs Status: RoHS non-compliant
• 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%
• Temperature Coefficient: 10ppm/°C
• Voltage - Input: 4.5 ~ 18 V
• Number Of Channels: 1
• Current - Quiescent: 500µA
• Current - Output: 10mA
• Operating Temperature: -40°C ~ 125°C
• Package / Case: 8-SOIC (3.9mm Width)
• Reference Volt Tolerance ±%: 0.12%
• Voltage Regulator Type: Switching
• Operating Temperature Max: 125°C
• Peak Reflow Compatible (260 C): No
• Output Voltage: 2.5V
• Current Rating: 500µA
• 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: 8
• Package Type: SOIC N
• Current - Cathode: -
• Lead Free Status / Rohs Status: Not Compliant

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
Absolute Maximum Ratings............................................................ 7
Pin Configurations and Function Descriptions ........................... 8
Typical Performance Characteristics ............................................. 9
Terminology .................................................................................... 15
Theory of Operation ...................................................................... 16
REVISION HISTORY
6/07—Rev. G to Rev. H
Changes to Table 2............................................................................ 3
Changes to Table 3............................................................................ 4
Changes to Table 4............................................................................ 5
Changes to Table 5............................................................................ 6
Updated Outline Dimensions ....................................................... 21
Changes to Ordering Guide .......................................................... 22
6/05—Rev. F to Rev. G
Changes to Table 1............................................................................ 1
Changes to Ordering Guide .......................................................... 22
2/05—Rev. E to Rev. F
Updated Format..................................................................Universal
Updated Outline Dimensions ....................................................... 21
Changes to Ordering Guide .......................................................... 22
7/04—Rev. D to Rev. E
Changes to Ordering Guide ............................................................ 5
3/04—Rev. C to Rev. D
Changes to Table I ............................................................................ 1
Changes to Ordering Guide ............................................................ 4
Updated Outline Dimensions ....................................................... 16
ADR420 Electrical Specifications............................................... 3
ADR421 Electrical Specifications............................................... 4
ADR423 Electrical Specifications............................................... 5
ADR425 Electrical Specifications............................................... 6
Thermal Resistance ...................................................................... 7
ESD Caution.................................................................................. 7
Device Power Dissipation Considerations.............................. 16
Rev. H | Page 2 of 24
Applications..................................................................................... 17
Outline Dimensions ....................................................................... 21
1/03—Rev. B to Rev. C
Changed Mini_SOIC to MSOP ........................................Universal
Changes to Ordering Guide .............................................................4
Corrections to Y-axis labels in TPCs 21 and 24 ............................9
Enhancement to Figure 13 ............................................................ 15
Updated Outline Dimensions....................................................... 16
3/02—Rev. A to Rev. B
Edits to Ordering Guide ...................................................................4
Deletion of Precision Voltage Regulator section........................ 15
Addition of Precision Boosted Output Regulator section ....... 15
Addition of Figure 13..................................................................... 15
10/01—Rev. 0 to Rev. A
Addition of ADR423 and ADR425 to
ADR420/ADR421...............................................................Universal
5/01—Revision 0: Initial Version
Basic Voltage Reference Connections ..................................... 16
Noise Performance..................................................................... 16
Turn-On Time ............................................................................ 16
Output Adjustment .................................................................... 17
Reference for Converters in Optical Network Control
Circuits......................................................................................... 17
A Negative Precision Reference Without Precision Resistors
....................................................................................................... 17
High Voltage Floating Current Source .................................... 18
Kelvin Connections.................................................................... 18
Dual-Polarity References........................................................... 18
Programmable Current Source ................................................ 19
Programmable DAC Reference Voltage .................................. 19
Precision Voltage Reference for Data Converters.................. 20
Precision Boosted Output Regulator ....................................... 20
Ordering Guide .......................................................................... 22