AD586JRZ-REEL71 [ADI]
High Precision 5 V Reference; 高精度5 V基准
| 型号： | AD586JRZ-REEL71 |
| 厂家： | 
ADI |
| 描述： | High Precision 5 V Reference |
| 文件： | 总16页 (文件大小：479K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
High Precision
5 V Reference
AD586
FEATURES
The AD586J, AD586K, AD586L, and AD586M are available in
an 8-lead PDIP; the AD586J, AD586K, AD586L, AD586A, and
AD586B are available in an 8-lead SOIC package; and the
AD586J, AD586K, AD586L, AD586S, and AD586T are
available in an 8-lead CERDIP package.
Laser trimmed to high accuracy
5.000 V 2.0 mV (M grade)
Trimmed temperature coefficient
2 ppm/°C max, 0°C to 70°C (M grade)
5 ppm/°C max, −40°C to +85°C (B and L grades)
10 ppm/°C max, −55°C to +125°C (T grade)
Low noise, 100 nV/√Hz
V
IN
NOISE REDUCTION
8
2
AD586
Noise reduction capability
Output trim capability
R
Z1
R
S
A1
6
5
V
MIL-STD-883-compliant versions available
Industrial temperature range SOICs available
Output capable of sourcing or sinking 10 mA
OUT
R
Z2
R
F
R
T
TRIM
R
I
GENERAL DESCRIPTION
4
The AD586 represents a major advance in state-of-the-art
monolithic voltage references. Using a proprietary ion-implanted
buried Zener diode and laser wafer trimming of high stability
thin-film resistors, the AD586 provides outstanding perform-
ance at low cost.
GND
NOTES
1. PINS 1, 3, AND 7 ARE INTERNAL TEST POINTS.
MAKE NO CONNECTIONS TO THESE POINTS.
Figure 1.
PRODUCT HIGHLIGHTS
The AD586 offers much higher performance than most other
5 V references. Because the AD586 uses an industry-standard
pinout, many systems can be upgraded instantly with the
AD586.
1. Laser trimming of both initial accuracy and temperature
coefficients results in very low errors over temperature
without the use of external components. The AD586M has
a maximum deviation from 5.000 V of 2.45 mV between
0°C and 70°C, and the AD586T guarantees 7.5 mV
maximum total error between −55°C and +125°C.
The buried Zener approach to reference design provides lower
noise and drift than band gap voltage references. The AD586
offers a noise reduction pin that can be used to further reduce
the noise level generated by the buried Zener.
2. For applications requiring higher precision, an optional
fine-trim connection is provided.
The AD586 is recommended for use as a reference for 8-, 10-,
12-, 14-, or 16-bit DACs that require an external precision
reference. The device is also ideal for successive approximation
or integrating ADCs with up to 14 bits of accuracy and, in
general, can offer better performance than the standard on-chip
references.
3. Any system using an industry-standard pinout reference
can be upgraded instantly with the AD586.
4. Output noise of the AD586 is very low, typically 4 µV p-p.
A noise reduction pin is provided for additional noise
filtering using an external capacitor.
The AD586J, AD586K, AD586L, and AD586M are specified for
operation from 0°C to 70°C; the AD586A and AD586B are
specified for −40°C to +85°C operation; and the AD586S and
AD586T are specified for −55°C to +125°C operation.
5. The AD586 is available in versions compliant with
MIL-STD-883. Refer to the Analog Devices Military
Products Databook or the current AD586/883B data sheet
for detailed specifications.
Rev. G
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
www.analog.com
© 2005 Analog Devices, Inc. All rights reserved.
AD586
TABLE OF CONTENTS
Specifications..................................................................................... 3
Load Regulation ............................................................................9
Temperature Performance............................................................9
Negative Reference Voltage from an AD586........................... 10
Using the AD586 with Converters........................................... 10
5 V Reference with Multiplying CMOS DACs or ADCs ...... 11
Stacked Precision References for Multiple Voltages .............. 11
Precision Current Source .......................................................... 11
Precision High Current Supply ................................................ 11
Outline Dimensions....................................................................... 13
Ordering Guide .......................................................................... 14
AD586J, AD586K/AD586A, AD586L/AD586B ....................... 3
AD586M, AD586S, AD586T....................................................... 4
Absolute Maximum Ratings............................................................ 5
ESD Caution.................................................................................. 5
Pin Configurations and Function Descriptions ........................... 6
Theory of Operation ........................................................................ 7
Applying the AD586..................................................................... 7
Noise Performance and Reduction ............................................ 7
Turn-on Time................................................................................ 8
Dynamic Performance................................................................. 8
REVISION HISTORY
3/05—Rev. F to Rev. G
Updated Format..................................................................Universal
Split Specifications Table into Table 1 and Table 2....................... 3
Changes to Table 1............................................................................ 3
Added Figure 2 and Figure 4........................................................... 6
Updated Outline Dimensions....................................................... 13
Changes to Ordering Guide .......................................................... 14
1/04—Rev. E to Rev. F
Changes to ORDERING GUIDE ................................................... 3
7/03—Rev. D to Rev. E
Removed AD586J CHIPS..................................................Universal
Updated ORDERING GUIDE........................................................ 3
Change to Figure 3 ........................................................................... 4
Updated Figure 12 ............................................................................ 7
Updated OUTLINE DIMENSIONS .............................................. 9
4/01—Rev. C to Rev. D
Changed Figure 10 to Table 1
(Maximum Output Change in mV)............................................... 6
11/95—Revision 0: Initial Version
Rev. G | Page 2 of 16
AD586
SPECIFICATIONS
AD586J, AD586K/AD586A, AD586L/AD586B
@ TA = 25°C, VIN = 15 V, unless otherwise noted. Specifications in boldface are tested on all production units at final electrical test. Results
from those tests are used to calculate outgoing quality levels. All minimum and maximum specifications are guaranteed, although only
those shown in boldface are tested on all production units, unless otherwise specified.
Table 1.
AD586J
Typ
AD586K/AD586A
AD586L/AD586B
Parameter
Min
Max Min
Typ
Max
Min
Typ
Max
Unit
OUTPUT VOLTAGE
4.980
5.020 4.995
5.005
4.9975
5.0025
V
OUTPUT VOLTAGE
DRIFT1
0°C to 70°C
−55°C to +125°C
GAIN ADJUSTMENT
25
15
5
ppm/°C
ppm/°C
%
+6
+6
+6
−2
−2
−2
%
LINE REGULATION1
10.8 V < + VIN < 36 V
TMIN to TMAX
11.4 V < +VIN < 36 V
TMIN to TMAX
100
100
100
µV/V
µV/V
LOAD REGULATION1
Sourcing 0 mA < IOUT < 10 mA
25°C
100
100
100
100
100
100
µV/mA
µV/mA
TMIN to TMAX
Sinking −10 mA < IOUT < 0 mA
25°C
400
3
400
3
400
3
µV/mA
mA
QUIESCENT CURRENT
POWER CONSUMPTION
OUTPUT NOISE
2
2
2
30
30
30
mW
0.1 Hz to 10 Hz
4
4
4
µV p-p
Spectral Density, 100 Hz
LONG-TERM STABILITY
100
15
100
15
100
15
nV/√Hz
ppm/1000 hr
SHORT-CIRCUIT
CURRENT-TO-GROUND
45
60
45
60
45
60
mA
TEMPERATURE RANGE
Specified Performance2
0
70
0
(K grade) 70
(A grade) +85
+85
0
(L grade) 70
(B grade) +85
+85
°C
°C
°C
−40
−40
−40
−40
Operating Performance3
−40
+85
1 Maximum output voltage drift is guaranteed for all packages and grades. CERDIP packaged parts are also 100°C production tested.
2 Lower row shows specified performance for A and B grades.
3 The operating temperature range is defined as the temperature extremes at which the device will still function. Parts may deviate from their specified performance
outside their specified temperature range.
Rev. G | Page 3 of 16
AD586
AD586M, AD586S, AD586T
@ TA = 25°C, VIN = 15 V, unless otherwise noted. Specifications in boldface are tested on all production units at final electrical test. Results
from those tests are used to calculate outgoing quality levels. All minimum and maximum specifications are guaranteed, although only
those shown in boldface are tested on all production units, unless otherwise specified.
Table 2.
AD586M
Typ
AD586S
Typ
AD586T
Typ
Parameter
Min
Max
Min
Max
Min
Max
Unit
OUTPUT VOLTAGE
4.998
5.002
4.990
5.010
4.9975
5.0025
V
OUTPUT VOLTAGE
DRIFT1
0°C to 70°C
−55°C to +125°C
GAIN ADJUSTMENT
2
ppm/°C
ppm/°C
%
20
10
+6
+6
+6
−2
−2
−2
%
LINE REGULATION1
10.8 V < +VIN < 36 V
TMIN to TMAX
11.4 V < +VIN < 36 V
TMIN to TMAX
100
µV/V
µV/V
150
150
LOAD REGULATION1
Sourcing 0 mA < IOUT < 10 mA
25°C
100
100
150
150
150
150
µV/mA
µV/mA
TMIN to TMAX
Sinking −10 mA < IOUT < 0 mA
25°C
400
3
400
3
400
3
µV/mA
mA
QUIESCENT CURRENT
POWER CONSUMPTION
OUTPUT NOISE
2
2
2
30
30
30
mW
0.1 Hz to 10 Hz
4
4
4
µV p-p
Spectral Density,
100 Hz
100
100
100
nV/√Hz
LONG-TERM STABILITY
15
45
15
45
15
45
ppm/1000 hr
mA
SHORT-CIRCUIT
CURRENT-TO-GROUND
60
60
60
TEMPERATURE RANGE
Specified Performance2
Operating Performance3
0
−40
70
+85
−55
−55
+125
+125
−55
−55
+125
+125
°C
°C
1 Maximum output voltage drift is guaranteed for all packages and grades. CERDIP packaged parts are also 100°C production tested.
2 Lower row shows specified performance for A and B grades.
3 The operating temperature range is defined as the temperature extremes at which the device will still function. Parts may deviate from their specified performance
outside their specified temperature range.
Rev. G | Page 4 of 16
AD586
ABSOLUTE MAXIMUM RATINGS
Table 3.
Stresses above those listed under Absolute Maximum Ratings
Parameter
Rating
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
VIN to Ground
36 V
Power Dissipation (25°C)
Storage Temperature
500 mW
−65°C to +150°C
Lead Temperature (Soldering, 10 sec) 300°C
Package Thermal Resistance
θJC
22°C/W
θJA
110°C/W
Output Protection
Output safe for indefinite
short to ground or VIN.
ESD CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the
human body and test equipment and can discharge without detection. Although this product features
proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy
electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance
degradation or loss of functionality.
Rev. G | Page 5 of 16
AD586
PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS
NOISE
NOISE
REDUCTION
NOISE
1
1
1
TP
V
1
2
3
4
8
7
6
5
TP
V
1
2
3
4
8
7
6
5
TP
V
1
2
3
4
8
7
6
5
REDUCTION
REDUCTION
AD586
TOP VIEW
(Not to Scale)
1
AD586
TOP VIEW
(Not to Scale)
1
1
TP
AD586
TP
TP
IN
IN
1
IN
1
TP
GND
V
1
TP
V
OUT
TP
GND
V
TOP VIEW
(Not to Scale)
OUT
OUT
TRIM
GND
TRIM
TRIM
1
TP DENOTES FACTORY TEST POINT.
NO CONNECTIONS, EXCEPT DUMMY PCB PAD,
SHOULD BE MADE TO THESE POINTS.
1
1
TP DENOTES FACTORY TEST POINT.
NO CONNECTIONS, EXCEPT DUMMY PCB PAD,
SHOULD BE MADE TO THESE POINTS.
TP DENOTES FACTORY TEST POINT.
NO CONNECTIONS, EXCEPT DUMMY PCB PAD,
SHOULD BE MADE TO THESE POINTS.
Figure 2. Pin Configuration (N-8)
Figure 3. Pin Configuration (Q-8)
Figure 4. Pin Configuration (R-8)
Table 4. Pin Function Descriptions
Pin No. Mnemonic
Description
1
2
3
4
5
6
7
8
TP1
Factory Trim Pad (No Connect).
Input Voltage.
Factory Trim Pad (No Connect).
Ground.
Optional External Fine Trim. See the Applying the AD586 section.
Output Voltage.
Factory Trim Pad (No Connect).
VIN
TP1
GND
TRIM
VOUT
TP1
NOICE REDUCTION
Optional Noise Reduction Filter with External 1µF Capacitor to Ground.
Rev. G | Page 6 of 16
AD586
THEORY OF OPERATION
V
IN
IN
The AD586 consists of a proprietary buried Zener diode refer-
ence, an amplifier to buffer the output, and several high stability
thin-film resistors, as shown in the block diagram in Figure 5.
This design results in a high precision monolithic 5 V output
reference with initial offset of 2.0 mV or less. The temperature
compensation circuitry provides the device with a temperature
coefficient of under 2 ppm/°C.
2
V
6
5
V
OUTPUT
O
AD586
NOISE
REDUCTION
8
10kΩ
TRIM
OPTIONAL
NOISE
REDUCTION
CAPACITOR
C
1µF
N
GND
4
Using the bias compensation resistor between the Zener output
and the noninverting input to the amplifier, a capacitor can be
added at the noise reduction pin (Pin 8) to form a low-pass
filter and reduce the noise contribution of the Zener to the
circuit.
Figure 6. Optional Fine-Trim Configuration
NOISE PERFORMANCE AND REDUCTION
The noise generated by the AD586 is typically less than 4 µV p-p
over the 0.1 Hz to 10 Hz band. Noise in a 1 MHz bandwidth is
approximately 200 µV p-p. The dominant source of this noise is
the buried Zener, which contributes approximately 100 nV/√Hz.
By comparison, contribution by the op amp is negligible. Figure 7
shows the 0.1 Hz to 10 Hz noise of a typical AD586. The noise
measurement is made with a band-pass filter made of a 1-pole
high-pass filter with a corner frequency at 0.1 Hz, and a 2-pole
low-pass filter with a corner frequency at 12.6 Hz, to create a
filter with a 9.922 Hz bandwidth.
V
IN
NOISE REDUCTION
8
2
AD586
R
Z1
R
S
A1
6
5
V
OUT
R
Z2
R
F
R
T
TRIM
R
I
If further noise reduction is desired, an external capacitor can
be added between the noise reduction pin and ground, as
shown in Figure 6. This capacitor, combined with the 4 kΩ RS
and the Zener resistances, forms a low-pass filter on the output
of the Zener cell. A 1 µF capacitor will have a 3 dB point at
12 Hz, and will reduce the high frequency (to 1 MHz) noise to
about 160 µV p-p. Figure 8 shows the 1 MHz noise of a typical
AD586, both with and without a 1 µF capacitor.
4
GND
NOTES
1. PINS 1, 3, AND 7 ARE INTERNAL TEST POINTS.
MAKE NO CONNECTIONS TO THESE POINTS.
Figure 5. Functional Block Diagram
APPLYING THE AD586
The AD586 is simple to use in virtually all precision reference
applications. When power is applied to Pin 2 and Pin 4 is
grounded, Pin 6 provides a 5 V output. No external components
are required; the degree of desired absolute accuracy is achieved
simply by selecting the required device grade. The AD586
requires less than 3 mA quiescent current from an operating
supply of 12 V or 15 V.
1µF
5s
1µF
An external fine trim may be desired to set the output level to
exactly 5.000 V (calibrated to a main system reference). System
calibration may also require a reference voltage that is slightly
different from 5.000 V, for example, 5.12 V for binary applica-
tions. In either case, the optional trim circuit shown in Figure 6
can offset the output by as much as 300 mV with minimal effect
on other device characteristics.
Figure 7. 0.1 Hz to 10 Hz Noise
Rev. G | Page 7 of 16
AD586
1mS
10V
5V
200µV
50µS
V
IN
C
N
= 1µF
V
OUT
NO C
N
Figure 8. Effect of 1 µF Noise Reduction Capacitor on Broadband Noise
Figure 10. Extended Time Scale
TURN-ON TIME
10V
1mV
100mS
V
Upon application of power (cold start), the time required for
the output voltage to reach its final value within a specified
error band is defined as the turn-on settling time. Two compo-
nents normally associated with this are the time for the active
circuits to settle, and the time for the thermal gradients on the
chip to stabilize. Figure 9, Figure 10, and Figure 11 show the
turn-on characteristics of the AD586. It shows the settling to be
about 60 µs to 0.01%. Note the absence of any thermal tails
when the horizontal scale is expanded to l ms/cm in Figure 10.
IN
V
OUT
Output turn-on time is modified when an external noise reduc-
tion capacitor is used. When present, this capacitor acts as an
additional load to the current source of the internal Zener
diode, resulting in a somewhat longer turn-on time. In the case
of a 1 µF capacitor, the initial turn-on time is approximately
400 ms to 0.01% (see Figure 11).
Figure 11. Turn-On with 1µF CN Characteristics
DYNAMIC PERFORMANCE
The output buffer amplifier is designed to provide the AD586
with static and dynamic load regulation superior to less com-
plete references.
10V
1mV
V
IN
Many ADCs and DACs present transient current loads to the
reference, and poor reference response can degrade the per-
formance of the converter.
V
OUT
Figure 12, Figure 13, and Figure 14 display the characteristics of
the AD586 output amplifier driving a 0 mA to 10 mA load.
V
OUT
3.5V
500Ω
20µS
5V
0V
V
L
AD586
Figure 9. Electrical Turn-On
Figure 12. Transient Load Test Circuit
Rev. G | Page 8 of 16
AD586
5V
200mV
1µS
1µS
5V
50mV
V
L
C
L
= 0
V
OUT
C
L
= 1000pF
Figure 16. Output Response with Capacitive Load
Figure 13. Large-Scale Transient Response
LOAD REGULATION
2µS
5V
1mV
The AD586 has excellent load regulation characteristics. Figure 17
shows that varying the load several mA changes the output by a
few µV. The AD586 has somewhat better load regulation per-
formance sourcing current than sinking current.
V
L
∆V
(µV)
OUT
V
OUT
1000
500
2
4
6
8
10 LOAD (mA)
0
–6
–4
–2
–500
Figure 14. Fine-Scale Setting for Transient Load
–1000
In some applications, a varying load may be both resistive and
capacitive in nature, or the load may be connected to the AD586
by a long capacitive cable.
Figure 17. Typical Load Regulation Characteristics
Figure 15 and Figure 16 display the output amplifier
characteristics driving a 1000 pF, 0 mA to 10 mA load.
TEMPERATURE PERFORMANCE
The AD586 is designed for precision reference applications
where temperature performance is critical. Extensive tempera-
ture testing ensures that the device maintains a high level of
performance over the operating temperature range.
V
OUT
C
L
3.5V
500Ω
1000pF
5V
0V
V
L
AD586
Some confusion exists with defining and specifying reference
voltage error over temperature. Historically, references have
been characterized using a maximum deviation per degree
Celsius, that is, ppm/°C. However, because of nonlinearities in
temperature characteristics that originated in standard Zener
references (such as “S” type characteristics), most manufacturers
have begun to use a maximum limit error band approach to
specify devices. This technique involves measuring the output at
three or more different temperatures to specify an output volt-
age error band.
Figure 15. Capacitive Load Transient Response Test Circuit
Rev. G | Page 9 of 16
AD586
Table 5. Maximum Output Change in mV
Maximum Output Change (mV)
Figure 18 shows the typical output voltage drift for the AD586L
and illustrates the test methodology. The box in Figure 18 is
bounded on the sides by the operating temperature extremes
and on the top and the bottom by the maximum and minimum
output voltages measured over the operating temperature
range. The slope of the diagonal drawn from the lower left to
the upper right corner of the box determines the performance
grade of the device.
Device
Grade
0°C to 70°C −40°C to +85°C
−55°C to +125°C
AD586J
AD586K
AD586L
8.75
5.25
1.75
AD586M 0.70
AD586A
AD586B
9.37
3.12
V
–V
MAX
MIN
SLOPE = T.C. =
–6
(T
MAX
–T
) × 5 × 10
MIN
AD586S
AD586T
18.00
9.00
5.0027 – 5.0012
=
=
–6
(70°C – 0) × 5 × 10
4.3ppm/°C
T
T
MAX
MIN
SLOPE
NEGATIVE REFERENCE VOLTAGE FROM AN AD586
5.003
V
MAX
The AD586 can be used to provide a precision −5.000 V output,
as shown in Figure 19. The VIN pin is tied to at least a 6 V supply,
the output pin is grounded, and the AD586 ground pin is con-
nected through a resistor, RS, to a −15 V supply. The −5 V output
is now taken from the ground pin (Pin 4) instead of VOUT. It is
essential to arrange the output load and the supply resistor, RS,
so that the net current through the AD586 is between 2.5 mA
and 10.0 mA. The temperature characteristics and long-term
stability of the device will be essentially the same as that of a
unit used in the standard +5 V output configuration.
V
MIN
5.000
–20
0
20
40
60
80
TEMPERATURE (°
ꢀC)
Figure 18. Typical AD586L Temperature Drift
+6V → +30V
10V
2.5mA <
–I < 10mA
L
R
S
Each AD586J, AD586K, and AD586L grade unit is tested at 0°C,
25°C, and 70°C. Each AD586SQ and AD586TQ grade unit is
tested at −55°C, +25°C, and +125°C. This approach ensures that
the variations of output voltage that occur as the temperature
changes within the specified range will be contained within a
box whose diagonal has a slope equal to the maximum specified
drift. The position of the box on the vertical scale will change
from device to device as initial error and the shape of the curve
vary. The maximum height of the box for the appropriate tem-
perature range and device grade is shown in Table 5. Dupli-
cation of these results requires a combination of high accuracy
and stable temperature control in a test system. Evaluation of
the AD586 will produce a curve similar to that in Figure 18, but
output readings could vary depending on the test methods and
equipment used.
2
V
IN
6
V
AD586
OUT
GND
4
I
L
–5V
R
S
–15V
Figure 19. AD586 as a Negative 5 V Reference
USING THE AD586 WITH CONVERTERS
The AD586 is an ideal reference for a wide variety of 8-, 12-, 14-,
and 16-bit ADCs and DACs. Several representative examples are
explained in the following sections.
Rev. G | Page 10 of 16
AD586
22V TO 46V
2
5 V REFERENCE WITH MULTIPLYING
CMOS DACs OR ADCs
V
IN
The AD586 is ideal for applications with 10- and 12-bit
multiplying CMOS DACs. In the standard hookup, as shown
in Figure 20, the AD586 is paired with the AD7545 12-bit
multiplying DAC and the AD711 high speed BiFET op amp.
The amplifier DAC configuration produces a unipolar 0 V to
−5 V output range. Bipolar output applications and other
operating details can be found in the individual product data
sheets.
6
5
V
15V
OUT
TRIM
GND
AD586
10kΩ
4
2
V
IN
6
5
V
10V
5V
OUT
AD586
10kΩ
TRIM
R2
68Ω
+15V
+15V
GND
2
4
V
+15V
0.1µF
IN
2
C1
33pF
6
5
V
18
20
V
IN
OUT
TRIM
GND
AD586
R
V
FB
DD
AD586
10kΩ
7
1
2
2
OUT 1
6
5
19
V
V
REF
OUT
V
AD711K
4
6
OUT
0V TO–5V
4
3
10kΩ
AGND
TRIM
AD7545K
0.1µF
DGND
3
GND
4
Figure 22. Multiple AD586s Stacked for Precision 5 V, 10 V, and 15 V Outputs
DB11TODB0
–15V
PRECISION CURRENT SOURCE
Figure 20. Low Power 12-Bit CMOS DAC Application
The design of the AD586 allows it to be easily configured as a
current source. By choosing the control resistor RC in Figure 23,
the user can vary the load current from the quiescent current
(typically, 2 mA) to approximately 10 mA. The compliance volt-
age of this circuit varies from about 5 V to 21 V, depending on
the value of VIN.
The AD586 can also be used as a precision reference for multi-
ple DACs. Figure 21 shows the AD586, the AD7628 dual DAC,
and the AD712 dual op amp hooked up for single-supply opera-
tion to produce 0 V to −5 V outputs. Because both DACs are on
the same die and share a common reference and output op
amps, the DAC outputs will exhibit similar gain TCs.
+V
IN
+15V
+15V
2
2
17
3
V
IN
V
IN
RFB A
V
A
5V
REF
OUT A
6
I
=
+ I
BIAS
V
V
AD586
2
6
4
L
OUT
OUT
R
C
R
DAC A
C
V
A=
(500Ω MIN)
OUT
0TO–5V
GND
4
AD586
AGND
RFB B
14
7
1
DB0
DATA
INPUTS
GND
4
AD7628
AD712
DB7
19
20
OUT B
Figure 23. Precision Current Source
4
V
B
DAC B
REF
V
B=
OUT
0TO–5V
PRECISION HIGH CURRENT SUPPLY
DGND
5
For higher currents, the AD586 can easily be connected to a
power PNP or power Darlington PNP device. The circuit in
Figure 24 and Figure 25 can deliver up to 4 amps to the load.
The 0.1 µF capacitor is required only if the load has a significant
capacitive component. If the load is purely resistive, improved
high frequency supply rejection results can be obtained by
removing the capacitor.
Figure 21. AD586 as a 5 V Reference for a CMOS
STACKED PRECISION REFERENCES FOR
MULTIPLE VOLTAGES
Often, a design requires several reference voltages. Three
AD586s can be stacked, as shown in Figure 22, to produce
5.000 V, 10.000 V, and 15.000 V outputs. This scheme can be
extended to any number of AD586s, provided the maximum
load current is not exceeded. This design provides the addi-
tional advantage of improved line regulation on the 5.0 V
output. Changes in VIN of 18 V to 50 V produce output changes
that are below the noise level of the references.
Rev. G | Page 11 of 16
AD586
15V
15V
220Ω
220Ω
2N6285
2N6285
0.1µF
0.1µF
2
2
V
V
IN
IN
5V
6
I
=
+ I
6
OUT
V
V
V
L
BIAS
OUT
5V @ 4 AMPS
OUT
AD586
AD586
R
C
R
C
GND
4
GND
4
Figure 24. Precision High Current Current Source
Figure 25. Precision High Current Voltage Source
Rev. G | Page 12 of 16
AD586
OUTLINE DIMENSIONS
0.400 (10.16)
0.365 (9.27)
0.355 (9.02)
8
1
5
4
0.280 (7.11)
0.250 (6.35)
0.240 (6.10)
0.325 (8.26)
0.310 (7.87)
0.300 (7.62)
PIN 1
5.00 (0.1968)
4.80 (0.1890)
0.100 (2.54)
BSC
0.060 (1.52)
MAX
0.195 (4.95)
0.130 (3.30)
0.115 (2.92)
0.210
(5.33)
MAX
8
1
5
4
6.20 (0.2440)
5.80 (0.2284)
4.00 (0.1574)
3.80 (0.1497)
0.015
(0.38)
MIN
0.150 (3.81)
0.130 (3.30)
0.115 (2.92)
0.015 (0.38)
GAUGE
0.014 (0.36)
0.010 (0.25)
0.008 (0.20)
PLANE
SEATING
PLANE
0.022 (0.56)
0.018 (0.46)
0.014 (0.36)
1.27 (0.0500)
BSC
0.50 (0.0196)
0.25 (0.0099)
0.430 (10.92)
MAX
0.005 (0.13)
MIN
× 45°
1.75 (0.0688)
1.35 (0.0532)
0.25 (0.0098)
0.070 (1.78)
0.060 (1.52)
0.045 (1.14)
0.10 (0.0040)
8°
0.51 (0.0201)
0.31 (0.0122)
0° 1.27 (0.0500)
COPLANARITY
0.10
0.25 (0.0098)
0.17 (0.0067)
SEATING
PLANE
0.40 (0.0157)
COMPLIANT TO JEDEC STANDARDS MS-001-BA
CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
CORNER LEADS MAY BE CONFIGURED AS WHOLE OR HALF LEADS.
COMPLIANT TO JEDEC STANDARDS MS-012AA
CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN
Figure 26. 8-Lead Plastic Dual In-Line Package [PDIP]
(N-8)
Figure 28. 8-Lead Standard Small Outline Package [SOIC]
Narrow Body
(R-8)
Dimensions shown in inches and (millimeters)
Dimensions shown in millimeters and (inches)
0.005 (0.13) 0.055 (1.40)
MIN
MAX
8
5
0.310 (7.87)
0.220 (5.59)
1
4
PIN 1
0.100 (2.54) BSC
0.405 (10.29) MAX
0.320 (8.13)
0.290 (7.37)
0.060 (1.52)
0.015 (0.38)
0.200 (5.08)
MAX
0.150 (3.81)
MIN
0.200 (5.08)
0.125 (3.18)
0.015 (0.38)
0.008 (0.20)
0.023 (0.58)
0.014 (0.36)
SEATING
PLANE
15°
0°
0.070 (1.78)
0.030 (0.76)
CONTROLLING DIMENSIONS ARE IN INCHES; MILLIMETER DIMENSIONS
(IN PARENTHESES) ARE ROUNDED-OFF INCH EQUIVALENTS FOR
REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN.
Figure 27. 8-Lead Ceramic Dual In-Line Package [CERDIP]
(Q-8)
Dimensions shown in inches and (millimeters)
Rev. G | Page 13 of 16
AD586
ORDERING GUIDE
Initial
Error
Temperature
Coefficient
Temperature
Range
Package
Description
Package
Option
Quantity Per
Reel
Model
AD586JN
20 mV
20 mV
20 mV
20 mV
20 mV
20 mV
20 mV
5 mV
5 mV
5 mV
5 mV
5 mV
5 mV
5 mV
5 mV
5 mV
2.5 mV
2.5 mV
2.5 mV
2.5 mV
2.5 mV
2.5 mV
2.5 mV
2.5 mV
2 mV
2 mV
5 mV
5 mV
5 mV
5 mV
5 mV
2.5 mV
2.5 mV
2.5 mV
2.5 mV
2.5 mV
2.5 mV
10 mV
2.5 mV
2.5 mV
25 ppm/°C
25 ppm/°C
25 ppm/°C
25 ppm/°C
25 ppm/°C
25 ppm/°C
25 ppm/°C
15 ppm/°C
15 ppm/°C
15 ppm/°C
15 ppm/°C
15 ppm/°C
15 ppm/°C
15 ppm/°C
15 ppm/°C
15 ppm/°C
5 ppm/°C
5 ppm/°C
5 ppm/°C
5 ppm/°C
5 ppm/°C
5 ppm/°C
5 ppm/°C
5 ppm/°C
2 ppm/°C
2 ppm/°C
15 ppm/°C
15 ppm/°C
15 ppm/°C
15 ppm/°C
15 ppm/°C
5 ppm/°C
5 ppm/°C
5 ppm/°C
5 ppm/°C
5 ppm/°C
5 ppm/°C
20 ppm/°C
10 ppm/°C
10 ppm/°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
0°C to 70°C
PDIP
PDIP
CERDIP
SOIC
SOIC
SOIC
SOIC
PDIP
PDIP
CERDIP
SOIC
SOIC
SOIC
SOIC
SOIC
SOIC
PDIP
PDIP
SOIC
SOIC
SOIC
SOIC
SOIC
SOIC
PDIP
PDIP
SOIC
SOIC
SOIC
SOIC
SOIC
SOIC
SOIC
SOIC
SOIC
SOIC
CERDIP
CERDIP
CERDIP
CERDIP
N-8
N-8
Q-8
R-8
R-8
R-8
R-8
N-8
N-8
Q-8
R-8
R-8
R-8
R-8
R-8
R-8
N-8
N-8
R-8
R-8
R-8
R-8
R-8
R-8
N-8
N-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
R-8
Q-8
Q-8
Q-8
Q-8
AD586JNZ1
AD586JQ
AD586JR
AD586JR-REEL7
AD586JRZ1
AD586JRZ-REEL71
AD586KN
AD586KNZ1
AD586KQ
1,000
1,000
AD586KR
AD586KR-REEL
AD586KR-REEL7
AD586KRZ1
AD586KRZ-REEL1
AD586KRZ-REEL71
AD586LN
AD586LNZ1
AD586LR
AD586LR-REEL
AD586LR-REEL7
AD586LRZ1
AD586LRZ-REEL1
AD586LRZ-REEL71
AD586MN
AD586MNZ1
AD586AR
AD586AR-REEL
AD586ARZ1
AD586ARZ-REEL1
AD586ARZ-REEL71
AD586BR
AD586BR-REEL7
AD586BRZ1
AD586BRZ-REEL1
AD586BRZ-REEL71
AD586LQ
2,500
1,000
2,500
1,000
2,500
1,000
2,500
1,000
0°C to 70°C
0°C to 70°C
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
−40°C to +85°C
0°C to 70°C
2,500
2,500
1,000
1,000
2,500
1,000
AD586SQ
AD586TQ
AD586TQ/883B2
−55°C to +125°C
−55°C to +125°C
−55°C to +125°C
1 Z = Pb-free part.
2 For details on grade and package offerings screened in accordance with MIL-STD-883, refer to the Analog Devices Military Products Databook or the current
AD586/883B data sheet.
Rev. G | Page 14 of 16
AD586
NOTES
Rev. G | Page 15 of 16
AD586
NOTES
©
2005 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
C00529–0–3/05(G)
Rev. G | Page 16 of 16
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