ADR127 Analog Devices, Inc., ADR127 Datasheet

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ADR127

Manufacturer Part Number
ADR127
Description
Precision, Micropower Ldo Voltage References In Tsot
Manufacturer
Analog Devices, Inc.
Datasheet
FEATURES
Initial accuracy
Maximum temperature coefficient
Low dropout: 300 mV for ADR121, ADR125
High output current: +5 mA/−2 mA
Low typical operating current: 85 μA
Input range: 2.7 V to 18 V
Temperature range: −40°C to +125°C
Tiny TSOT (UJ-6) package
APPLICATIONS
Battery-powered instrumentation
Portable medical equipment
Data acquisition systems
Automotive
GENERAL DESCRIPTION
The ADR121/ADR125/ADR127 are a family of micropower,
high precision, series mode, band gap references with sink and
source capability. The parts feature high accuracy and low
power consumption in a tiny package. The ADR12x design
includes a patented temperature-drift curvature correction
technique that minimizes the nonlinearities in the output
voltage vs. temperature characteristics.
The ADR12x is a low dropout voltage reference, requiring only
300 mV for ADR121/ADR125 and 1.45 V for ADR127 above
Rev. A
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.
A grade: ±0.24%
B grade: ±0.12%
A grade: 25 ppm/°C
B grade: 9 ppm/°C
Precision, Micropower LD0 Voltage
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
the nominal output voltage on the input to provide a stable
output voltage. This low dropout performance, coupled with the
low 85 μA operating current, makes the ADR12x ideal for
battery-powered applications.
Available in an extended industrial temperature range of −40°C
to +125°C, the ADR121/ADR125/ADR127 are housed in the
tiny TSOT (UJ-6) package.
ADR121/ADR125/ADR127
©2006–2007 Analog Devices, Inc. All rights reserved.
GND
PIN CONFIGURATION
NC
V
1
IN
1
MUST BE LEFT FLOATING
References in TSOT
1
2
3
NC = NO CONNECT
(Not to Scale)
ADR12x
TOP VIEW
Figure 1.
6
5
4
NC
NC
V
OUT
1
1
www.analog.com

Related parts for ADR127

ADR127 Summary of contents

Page 1

... The ADR12x is a low dropout voltage reference, requiring only 300 mV for ADR121/ADR125 and 1.45 V for ADR127 above Rev. A 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 ...

Page 2

... TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Pin Configuration............................................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 ADR121 Electrical Characteristics............................................. 3 ADR125 Electrical Characteristics............................................. 4 ADR127 Electrical Characteristics............................................. 5 Absolute Maximum Ratings............................................................ 6 Thermal Resistance ...................................................................... 6 ESD Caution.................................................................................. 6 Typical Performance Characteristics ............................................. 7 REVISION HISTORY 5/07—Rev Rev. A Changes to Table 1............................................................................ 3 Changes to Table 2............................................................................ 4 Changes to Table 3............................................................................ 5 Added Thermal Hysteresis Equation ...

Page 3

... 2 2 kHz 0 0.1 0.2 μF L 1000 hours @ 25°C See the Terminology section Rev Page ADR121/ADR125/ADR127 Min Typ Max Unit 2.497 2.5 2.503 V 2.494 2.5 2.506 V −0.12 +0.12 % −0.24 +0. ppm/° ppm/° ...

Page 4

... ADR121/ADR125/ADR127 ADR125 ELECTRICAL CHARACTERISTICS T = 25° 5 mA, unless otherwise noted OUT Table 2. Parameter OUTPUT VOLTAGE B Grade A Grade INITIAL ACCURACY ERROR B Grade A Grade TEMPERATURE COEFFICIENT B Grade A Grade DROPOUT (V − OUT IN LOAD REGULATION LINE REGULATION PSRR QUIESCENT CURRENT SHORT-CIRCUIT CURRENT TO GROUND ...

Page 5

... ADR127 ELECTRICAL CHARACTERISTICS T = 25°C, 2 mA, unless otherwise noted. A OUT Table 3. Parameter OUTPUT VOLTAGE B Grade A Grade INITIAL ACCURACY ERROR B Grade A Grade TEMPERATURE COEFFICIENT B Grade A Grade DROPOUT (V − OUT IN LOAD REGULATION LINE REGULATION PSRR QUIESCENT CURRENT SHORT-CIRCUIT CURRENT TO GROUND VOLTAGE NOISE ...

Page 6

... ADR121/ADR125/ADR127 ABSOLUTE MAXIMUM RATINGS Table 4. Parameter V to GND IN Internal Power Dissipation TSOT (UJ-6) Storage Temperature Range Operating Temperature Range Lead Temperature, Soldering Vapor Phase (60 sec) Infrared (15 sec) Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only ...

Page 7

... Rev Page ADR121/ADR125/ADR127 –50 –40 –30 –20 – TEMPERATURE COEFFICIENT (ppm/°C) Figure 5. ADR127 Temperature Coefficient –50 –40 –30 –20 – TEMPERATURE COEFFICIENT (ppm/°C) Figure 6. ADR125 Temperature Coefficient 5 ...

Page 8

... ADR121/ADR125/ADR127 3.0 2.8 –40°C 2.6 +25°C 2.4 +125°C 2.2 2.0 –2 – LOAD CURRENT (mA) Figure 8. ADR127 Minimum Input Voltage vs. Load Current 3.5 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 –2 – LOAD CURRENT (mA) Figure 9. ADR121 Minimum Input Voltage vs. Load Current 6.2 6.0 5.8 5.6 5.4 5.2 5.0 –2 – LOAD CURRENT (mA) Figure 10. ADR125 Minimum Input Voltage vs. Load Current ...

Page 9

... LOAD CURRENT (mA) Figure 14. ADR127 Supply Current vs. Load Current 6 — +125°C — +25°C — –40° –2 – LOAD CURRENT (mA) Figure 15 ...

Page 10

... Rev Page 0.1µF IN OUT 2µV/DIV TIME (1s/DIV) Figure 23. ADR127 0 Noise 0.1µF IN OUT 5µV/DIV TIME (1s/DIV) Figure 24. ADR121 0 Noise 0.1µF IN OUT 10µV/DIV TIME (1s/DIV) Figure 25. ADR125 0 Noise CH1 p-p 5.76µ ...

Page 11

... 0.1µF IN OUT 1 50µV/DIV TIME (1s/DIV) Figure 26. ADR127 kHz Noise 0.1µF IN OUT 1 100µV/DIV TIME (1s/DIV) Figure 27. ADR121 kHz Noise 0.1µF IN OUT 1 200µV/DIV TIME (1s/DIV) Figure 28. ADR125 kHz Noise ...

Page 12

... ADR121/ADR125/ADR127 V 1V/DIV 0.1µF IN OUT 1 V OUT 1V/DIV TIME (100µs/DIV) 2 Figure 32. ADR121 Turn-On Response V 1V/DIV 0.1µF IN OUT 1 V OUT TIME (40µs/DIV) 1V/DIV 2 Figure 33. ADR121 Turn-On Response V IN 1V/DIV 1 V OUT 1V/DIV TIME (200µs/DIV) 2 Figure 34. ADR121 Turn-Off Response ...

Page 13

... Figure 41. ADR127 Load Transient Response (Sinking 250Ω LOAD 5mA SOURCING OUT 100mV/DIV Figure 42. ADR127 Load Transient Response (Sourcing 1250Ω LOAD 2mA SINKING OUT 10mV/DIV Figure 43. ADR121 Load Transient Response (Sinking) Rev Page ...

Page 14

... Figure 47. ADR121/ADR125/ADR127 PSRR 50 10V Figure 48. ADR121/ADR125/ADR127 Output Impedance vs. Frequency 5V 0V Rev Page 10k 100k 1M 10M 100M ADR127 ADR121 ADR125 1 100 1k 10k 100k FREQUENCY (Hz) ...

Page 15

... This is a typical value from a sample of parts put through such a cycle. where: V (25° OUT V OUT_TC −40°C to +125°C and back to +25°C. Rev Page ADR121/ADR125/ADR127 ( ) ( ) Δ − ...

Page 16

... ADR121/ADR125/ADR127 THEORY OF OPERATION The ADR12x band gap references are the high performance solution for low supply voltage and low power applications. The uniqueness of these products lies in their architecture. POWER DISSIPATION CONSIDERATIONS The ADR12x family is capable of delivering load currents with an input range from 3 When this device ...

Page 17

... U1, while V is the sum of this voltage OUT2 and the terminal of U2. U1 and U2 are chosen for the two voltages that supply the required outputs (see Table 6). For example and U2 are ADR127 and V 1.25 V and V is 2.5 V. OUT2 Table 6. Required Outputs ...

Page 18

... ADR121AUJZ-R2 2.5 2.5 1 ADR121BUJZ-REEL7 2.5 2.5 1 ADR125AUJZ-REEL7 5.0 5.0 1 ADR125AUJZ-R2 5.0 5.0 ADR125BUJZ-REEL7 1 5.0 5.0 1 ADR127AUJZ-REEL7 1. ADR127AUJZ-R2 1. ADR127BUJZ-REEL7 1.25 1 RoHS Compliant Part. 2.90 BSC 2.80 BSC 1.60 BSC PIN 1 0.95 BSC 1.90 * 0.90 BSC 0.87 0.84 * 1.00 MAX 0.20 0.08 0.50 SEATING 0.30 PLANE * COMPLIANT TO JEDEC STANDARDS MO-193-AA WITH THE EXCEPTION OF PACKAGE HEIGHT AND THICKNESS. Figure 53. 6-Lead Thin Small Outline Transistor Package [TSOT] ...

Page 19

... NOTES ADR121/ADR125/ADR127 Rev Page ...

Page 20

... ADR121/ADR125/ADR127 NOTES ©2006–2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05725-0-5/07(A) Rev Page ...

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