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ADR512WARTZ-R7

P1-P3P4-P6P7-P9P10-P12
1.2 V Precision Low Noise
Shunt Voltage Reference
ADR512W
Rev. 0
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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
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Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©2011 Analog Devices, Inc. All rights reserved.
FEATURES
Precision 1.200 V voltage reference
Ultracompact 3-lead SOT-23 package
No external capacitor required
Low output noise: 4 µV p-p (0.1 Hz to 10 Hz)
Initial accuracy: ±0.67% maximum
Temperature coefficient: 60 ppm/°C maximum
Operating current range: 100 µA to 10 mA
Output impedance: 0.3 Ω maximum
Temperature range: −40°C to +85°C
Qualified for automotive applications
APPLICATIONS
Automotive systems
Precision data acquisition systems
Microcontroller reference voltage
PIN CONFIGURATION
NC = NO CONNECT. DO NOT
CONNECT TO THIS PIN.
09938-001
V+
1
V–
2
TRIM/NC
3
ADR512W
TOP VIEW
(Not to Scale)
Figure 1. 3-Lead SOT-23
GENERAL DESCRIPTION
Designed for space critical applications, the ADR512W is a low
voltage (1.200 V), precision shunt-mode voltage reference in the
ultracompact SOT-23 package. The ADR512W features low
temperature drift (60 ppm/°C), high accuracy (±0.67%), and
ultralow noise (4 µV p-p) performance.
The ADR512W’s advanced design eliminates the need for an
external capacitor, yet it is stable with any capacitive load. The
minimum operating current increases from a scant 100 µA to a
maximum of 10 mA.
A TRIM terminal is available on the ADR512W to provide
adjustment of the output voltage over ±0.5% without affecting
the temperature coefficient of the device. This feature provides
users with the flexibility to trim out any system errors.
09938-002
AD512W
V
OUT
= 1.2V
I
Q
I
L
+ I
Q
R
BIAS
V
S
I
L
C
OUT
(OPTIONAL)
R
BIAS
=
V
S
– V
OUT
I
L
+ I
Q
Figure 2. Typical Operating Circuit
ADR512W
Rev. 0 | Page 2 of 12
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 .................................................................................. 4
Typical Performance Characteristics ..............................................5
Terminology .......................................................................................7
Applications Information .................................................................8
Adjustable Precision Voltage Source ..........................................8
Output Voltage Trim .....................................................................8
Using the ADR512W with Precision Data Converters ............8
Precise Negative Voltage Reference ............................................8
Outline Dimensions ....................................................................... 10
Ordering Guide .......................................................................... 10
Automotive Products ................................................................. 10
REVISION HISTORY
5/11—Revision 0: Initial Version
ADR512W
Rev. 0 | Page 3 of 12
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
I
IN
= 100 µA to 10 mA at T
A
= 25°C, unless otherwise noted.
Table 1.
Parameter Symbol Test Conditions/Comments Min Typ Max Unit
Output Voltage
1
V
O
1.192 1.2 1.208 V
Initial Accuracy V
OERR
−8.0 +8.0 mV
Temperature Coefficient A Grade TCV
O
−40°C < T
A
< +85°C 60 ppm/°C
Output Voltage Change vs. I
IN
ΔV
R
I
IN
= 0.1 mA to 10 mA 3 mV
Dynamic Output Impedence (ΔV
R
/ΔI
R
) I
IN
= 1 mA ± 100 µA 0.3 Ω
Minimum Operating Current I
IN
−40°C < T
A
< +85°C 100 µA
Voltage Noise e
N
p-p f = 0.1 Hz to 10 Hz 4 µV p-p
Turn-On Settling Time
2
t
R
To within 0.1% of output 10 µs
Output Voltage Hysteresis V
O_HYS
50 ppm
1
The forward diode voltage characteristic at −1 mA is typically 0.65 V.
2
Measured without a load capacitor.
P1-P3P4-P6P7-P9P10-P12

ADR512WARTZ-R7

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Manufacturer:
Analog Devices Inc.
Description:
Voltage References 1.2V Prec Shunt Low Noise
Lifecycle:
New from this manufacturer.
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