ADR370ART-REEL7 Analog Devices Inc, ADR370ART-REEL7 Datasheet

IC VREF PREC 2.048V LP SOT-23

ADR370ART-REEL7

Manufacturer Part Number
ADR370ART-REEL7
Description
IC VREF PREC 2.048V LP SOT-23
Manufacturer
Analog Devices Inc
Datasheet

Specifications of ADR370ART-REEL7

Rohs Status
RoHS non-compliant
Reference Type
Series
Voltage - Output
2.048V
Tolerance
±0.5%
Temperature Coefficient
100ppm/°C
Voltage - Input
2.3 ~ 15 V
Number Of Channels
1
Current - Quiescent
72µA
Current - Output
5mA
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
SOT-23-3, TO-236-3, Micro3™, SSD3, SST3
Current - Cathode
-
FEATURES
Initial accuracy: ±4 mV maximum
Initial accuracy error: ±0.2%
Low TCVO
Load regulation: 400 μV/mA, 100 ppm/mA
Line regulation: 25 μV/V, 20 ppm/V
Wide operating range: V
Low power: 72 μA maximum
High output sink/source current: ±5 mA minimum
Wide temperature range: −40°C to +125°C
Tiny 3-lead SOT-23 package with standard pin configuration
APPLICATIONS
Battery-powered instrumentation
Portable medical instruments
Data acquisition systems
Industrial process control systems
Automotive
GENERAL DESCRIPTION
The ADR370
reference featuring high accuracy, high stability, and low power
consumption packaged in a tiny 3-lead SOT-23 package. Precise
matching and thermal tracking of on-chip components, as well
as patented temperature drift curvature correction design
techniques, have been employed to ensure that the ADR370
provides an accurate 2.048 V output.
1
Rev. C
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.
Protected by U.S. Patent No. 5,969,657; other patents pending.
±50 ppm/°C maximum from −40°C to +125°C
30 ppm/°C maximum from +25°C to +70°C
1
is a low cost, 3-terminal (series) band gap voltage
IN
= 2.3 V to 15 V
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
Table 1. ADR370 Products
Products
ADR370BRT-REEL7
ADR370ART-REEL7
This micropowered, low dropout voltage device sources or sinks
up to 5 mA of load current while providing a stable 2.048 V
output. The compact footprint, high accuracy, and operating
range of 2.3 V to 15 V make the ADR370 ideal for use in 3 V
and 5 V systems where there can be wide variations in supply
voltage and a need to minimize power dissipation.
The ADR370 is offered in A and B grades; all devices are
specified over the extended industrial range of −40°C to +125°C.
Precision Low Power 2.048 V
SOT-23 Voltage Reference
V
©2003–2007 Analog Devices, Inc. All rights reserved.
OUT
PIN CONFIGURATION
V
IN
Output
Voltage (V)
2.048
2.048
Figure 1. 3-Lead SOT-23
1
2
ADR370
Initial
Accuracy ±
(mV)
4
10
3
GND
(%)
0.2
0.5
ADR370
www.analog.com
Temperature
Coefficient
(ppm/°C)
50
100

Related parts for ADR370ART-REEL7

ADR370ART-REEL7 Summary of contents

Page 1

... Output Products Voltage (V) (mV) ADR370BRT-REEL7 2.048 4 ADR370ART-REEL7 2.048 10 This micropowered, low dropout voltage device sources or sinks load current while providing a stable 2.048 V output. The compact footprint, high accuracy, and operating range of 2 make the ADR370 ideal for use and 5 V systems where there can be wide variations in supply voltage and a need to minimize power dissipation. The ADR370 is offered in A and B grades ...

Page 2

ADR370 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Pin Configuration ............................................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Electrical Characteristics ............................................................. 3 Absolute Maximum Ratings ............................................................ 4 Thermal Resistance ...................................................................... 4 ESD Caution ...

Page 3

SPECIFICATIONS ELECTRICAL CHARACTERISTICS unless otherwise noted. A MIN MAX IN Table 2. Parameter OUTPUT VOLTAGE (@ 25°C) INITIAL ACCURACY ERROR A Grade B Grade 1 OUTPUT VOLTAGE TEMPERATURE DRIFT A ...

Page 4

ADR370 ABSOLUTE MAXIMUM RATINGS Ratings at 25°C, unless otherwise noted. Table 3. Parameter Supply Voltage Storage Temperature Range Operating Temperature Range Lead Temperature Soldering, 60 sec Infrared, 15 sec Stresses above those listed under Absolute Maximum Ratings may cause permanent ...

Page 5

TYPICAL PERFORMANCE CHARACTERISTICS –40°C 4 +125°C 2 +25°C 0 –2 –4 –4 –3 –2 – LOAD (mA) Figure 2. Load Regulation vs. Load Current 2.048 2.046 2.044 2.042 V = ...

Page 6

ADR370 C = 0.1µ 0.22µ OUT V = 5V/DIV IN TIME (100µs/DIV) Figure 8. Turn-On Response R = 1kΩ LOAD TIME (100µs/DIV) Figure 9. Turn-Off Response = 1V/DIV V = 1V/DIV OUT V = 5V/DIV ...

Page 7

TERMINOLOGY Temperature Coefficient Temperature coefficient is the change of output voltage with respect to operating temperature changes, normalized by the output voltage at 25°C. This parameter is expressed in ppm/°C and can be determined by the following equation ...

Page 8

ADR370 THEORY OF OPERATION The ADR370 uses the band gap concept to produce a stable, low temperature coefficient voltage reference suitable for high accuracy data acquisition components and systems. This device makes use of the underlying temperature characteristics of a ...

Page 9

APPLICATIONS INFORMATION LOW COST NEGATIVE REFERENCE A low cost negative reference can be obtained by leveraging the current sinking capability of the ADR370. By simply tying the V terminal to ground and adding a bias resistor (R OUT the GND ...

Page 10

ADR370 12-BIT PRECISION PROGRAMMABLE CURRENT SOURCE By replacing the potentiometer in Figure 17 with a 12-bit precision DAC, such as the AD5322, a higher precision programmable current source can be achieved. Figure 18 illustrates the implementation of this circuit. The ...

Page 11

... MIN 3.10 2.90 DIRECTION OF UNREELING 1.40 1.20 0.100 0.013 SEATING PLANE ORDERING GUIDE Initial Output Accuracy ± Voltage (V) Model (mV) ADR370ART-R2 2.048 10 ADR370ART-REEL7 2.048 10 1 ADR370ARTZ-REEL7 2.048 10 ADR370BRT-R2 2.048 4 ADR370BRT-REEL7 2.048 4 1 ADR370BRTZ-R2 2.048 4 1 ADR370BRTZ-REEL7 2.048 RoHS Compliant Part. ...

Page 12

ADR370 NOTES ©2003–2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D03432-0-12/07(C) Rev Page ...

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