ADR290 Analog Devices, ADR290 Datasheet

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ADR290

Manufacturer Part Number
ADR290
Description
Manufacturer
Analog Devices
Datasheet

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a
XFET is a registered trademark of Analog Devices, Inc.
GENERAL DESCRIPTION
The ADR290, ADR291 and ADR292 are low noise, micro-
power precision voltage references that use an XFET
circuit. The new XFET architecture offers significant perfor-
mance improvements over traditional bandgap and Buried
Zener-based references. Improvements include: one quarter the
voltage noise output of bandgap references operating at the
same current, very low and ultralinear temperature drift, low
thermal hysteresis and excellent long-term stability.
The ADR29x family are series voltage references providing stable
and accurate output voltages from supplies as low as 2.35 V for the
ADR290. Output voltage options are 2.048 V, 2.5 V, and 4.096 V
for the ADR290, ADR291, and ADR292 respectively. Quiescent
Part Number
ADR290
ADR291
ADR292
ADR293
Output Voltage
(V)
2.048
2.500
4.096
5.000
®
reference
ADR29x Product
Initial Accuracy
0.10, 0.15, 0.29
0.08, 0.12, 0.24
0.07, 0.10, 0.15
(%)
current is only 12 µA, making these devices ideal for battery-
powered instrumentation. Three electrical grades are available
offering initial output accuracies of ± 2 mV, ± 3 mV and ± 6 mV
max for the ADR290 and ADR291, and ± 3 mV, ± 4 mV and
± 6 mV max for the ADR292. Temperature coefficients for the
three grades are 8 ppm/°C, 15 ppm/°C, and 25 ppm/°C max,
respectively. Line regulation and load regulation are typically
30 ppm/V and 30 ppm/mA, maintaining the reference’s overall
high performance. For a device with 5.0 V output, refer to the
ADR293 data sheet.
The ADR290, ADR291, and ADR292 references are specified
over the extended industrial temperature range of –40°C to
+125°C. Devices are available in the 8-lead SOIC and 8-lead
TSSOP packages.
Precision Voltage References
(See ADR293 Data Sheet)
ADR290/ADR291/ADR292
2.048 V, 2.5 V, and 4.096 V
8-Lead Narrow Body SO (SO Suffix)
8-Lead TSSOP (RU Suffix)
PIN CONFIGURATIONS
Low Noise Micropower
GND
GND
NC
V
NC
NC
V
NC
IN
IN
NC = NO CONNECT
NC = NO CONNECT
1
2
3
4
1
2
3
4
Temperature Coefficient
(ppm/ C) Max
8, 15, 25
8, 15, 25
8, 15, 25
(Not to Scale)
(Not to Scale)
ADR29x
ADR29x
TOP VIEW
TOP VIEW
8
7
6
5
8
7
6
5
NC
NC
NC
NC
NC
NC
V
V
OUT
OUT

Related parts for ADR290

ADR290 Summary of contents

Page 1

... ADR290 and ADR291, and ± 3 mV, ± and ± max for the ADR292. Temperature coefficients for the three grades are 8 ppm/°C, 15 ppm/°C, and 25 ppm/°C max, respectively. Line regulation and load regulation are typically 30 ppm/V and 30 ppm/mA, maintaining the reference’ ...

Page 2

... ADR290/ADR291/ADR292 ADR290–SPECIFICATIONS ELECTRICAL SPECIFICATIONS Parameter E GRADE Output Voltage Initial Accuracy F GRADE Output Voltage Initial Accuracy G GRADE Output Voltage Initial Accuracy LINE REGULATION “E/F” Grades “G” Grade LOAD REGULATION “E/F” Grades “G” Grade LONG-TERM STABILITY NOISE VOLTAGE ...

Page 3

... OUT ∆V /∆ 5 LOAD +25° –40°C ≤ T ≤ +125° SO-8, TSSOP-8 O–HYS ADR290/ADR291/ADR292 Min Typ Max Unit 2.498 2.500 2.502 V – –0.08 +0.08 % 2.497 2.500 2.503 V – –0.12 +0. ...

Page 4

... ADR290/ADR291/ADR292 ADR292–SPECIFICATIONS ELECTRICAL SPECIFICATIONS Parameter E GRADE Output Voltage Initial Accuracy F GRADE Output Voltage Initial Accuracy G GRADE Output Voltage Initial Accuracy LINE REGULATION “E/F” Grades “G” Grade LOAD REGULATION “E/F” Grades “G” Grade LONG-TERM STABILITY NOISE VOLTAGE ...

Page 5

... ABSOLUTE MAXIMUM RATINGS Supply Voltage Output Short-Circuit Duration to GND . . . . . . . . . . Indefinite Storage Temperature Range SO, RU Package . . . . . . . . . . . . . . . . . . . Operating Temperature Range ADR290/ADR291/ADR292 . . . . . . . . . . . Junction Temperature Range SO, RU Package . . . . . . . . . . . . . . . . . . . Lead Temperature (Soldering, 60 sec 300°C NOTES 1. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only ...

Page 6

... ADR290/ADR291/ADR292 PARAMETER DEFINITION 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 ...

Page 7

... Typical Performance Characteristic–ADR290/ADR291/ADR292 2.054 TYPICAL PARTS S 2.052 2.050 2.048 2.046 2.044 2.042 –50 – TEMPERATURE – C 2.506 TYPICAL PARTS S 2.504 2.502 2.500 2.498 2.496 2.494 –50 – TEMPERATURE – C 4.102 TYPICAL PARTS S 4.100 4 ...

Page 8

... ADR290/ADR291/ADR292 ADR292 –50 – TEMPERATURE – C 100 ADR290 2.7V TO 15V S ADR291 3.0V TO 15V S ADR292 4.5V TO 15V ADR292 –50 – TEMPERATURE – C 100 ADR290 2.7V TO 7.0V S ADR291 3.0V TO 7.0V S ADR292 4. ADR291 –50 –25 ...

Page 9

... ADR290/ADR291/ADR292 +125 – SOURCING LOAD CURRENT – mA ∆ + – +125 SOURCING LOAD CURRENT – ...

Page 10

... ADR290/ADR291/ADR292 1000 ADR292 900 800 700 ADR291 600 500 400 300 ADR290 200 100 0 10 100 FREQUENCY – Hz 120 100 100 FREQUENCY – Hz 100 p 15V 1000 ...

Page 11

... 5mA 100nF L 100 OFF 1ms 100 1ms 100 5ms ADR290/ADR291/ADR292 I = 5mA 500 0mA 10ms L 1V TEMPERATURE +25 C – + DEVIATION – ppm OUT ...

Page 12

... The noise generated by the ADR29x family of references is typi- cally less than 12 µV p-p over the 0 band. TPC 21 shows the 0 noise of the ADR290 which is only 6 µV p-p. The noise measurement is made with a bandpass filter made of a 2-pole high-pass filter with a corner frequency at 0.1 Hz and a 2-pole low-pass filter with a corner frequency ...

Page 13

... However, the Kelvin connection of Figure 6, overcomes the problem by including the wiring resistance within the forcing loop of the op amp. Since the op amp senses the load voltage, op amp loop control forces the output to compensate for the wiring error and to produce the correct voltage at the load. ADR290/ADR291/ADR292 V IN ADR29x V ...

Page 14

... The ADR29x family has a number of features that makes it ideally suited for use with A/D and D/A converters. The low supply voltage required makes it possible to use the ADR290 and ADR291 with today’s converters that run supplies without having to add a higher supply voltage for the reference. ...

Page 15

... SEATING 0.0138 (0.35) PLANE 0.0075 (0.19) 8-Lead TSSOP (RU Suffix) 0.122 (3.10) 0.114 (2.90 0.177 (4.50) 0.169 (4.30) 0.256 (6.50) 0.246 (6.25 PIN 1 0.0256 (0.65) BSC 0.0433 0.006 (0.15) (1.10) MAX 0.002 (0.05 0.0118 (0.30) SEATING 0.0079 (0.20) 0.0075 (0.19) PLANE 0.0035 (0.090) ADR290/ADR291/ADR292 0.0196 (0.50) 45 0.0099 (0.25) 8 0.0500 (1.27) 0 0.0160 (0.41) 0.028 (0.70) 0.020 (0.50) ...

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