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AD584 の電気的特性と機能

AD584のメーカーはAnalog Devicesです、この部品の機能は「Precision Voltage Reference」です。


製品の詳細 ( Datasheet PDF )

部品番号
AD584
部品説明
Precision Voltage Reference
メーカ
Analog Devices
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AD584 Datasheet, AD584 PDF,ピン配置, 機能
Data Sheet
FEATURES
Four programmable output voltages
10.000 V, 7.500 V, 5.000 V, and 2.500 V
Laser-trimmed to high accuracies
No external components required
Trimmed temperature coefficient
15 ppm/°C maximum, 0°C to 70°C (AD584K)
15 ppm/°C maximum, −55°C to +125°C (AD584T)
Zero output strobe terminal provided
2-terminal negative reference: capability (5 V and above)
Output sources or sinks current
Low quiescent current: 1.0 mA maximum
10 mA current output capability
MIL-STD-883 compliant versions available
GENERAL DESCRIPTION
The AD584 is an 8-terminal precision voltage reference offering
pin programmable selection of four popular output voltages:
10.000 V, 7.500 V, 5.000 V and 2.500 V. Other output voltages,
above, below, or between the four standard outputs, are available by
the addition of external resistors. The input voltage can vary
between 4.5 V and 30 V.
Laser wafer trimming (LWT) is used to adjust the pin
programmable output levels and temperature coefficients,
resulting in the most flexible high precision voltage reference
available in monolithic form.
In addition to the programmable output voltages, the AD584
offers a unique strobe terminal that permits the device to be
turned on or off. When the AD584 is used as a power supply
reference, the supply can be switched off with a single, low power
signal. In the off state, the current drained by the AD584 is reduced
to approximately 100 µA. In the on state, the total supply current is
typically 750 µA, including the output buffer amplifier.
The AD584 is recommended for use as a reference for 8-, 10-,
or 12-bit digital-to-analog converters (DACs) that require an
external precision reference. In addition, the device is ideal for
analog-to-digital converters (ADCs) of up to 14-bit accuracy,
either successive approximation or integrating designs, and in
general, it can offer better performance than that provided by
standard self-contained references.
Pin Programmable,
Precision Voltage Reference
AD584
PIN CONFIGURATIONS
TAB
8
10.0V 1 V+ 7 CAP
AD584
5.0V 2 TOP VIEW 6 VBG
(Not to Scale)
2.5V 3
5 STROBE
4
COMMON
Figure 1. 8-Pin TO-99
10.0V 1
5.0V 2
2.5V 3
COMMON 4
AD584
TOP VIEW
(Not to Scale)
8 V+
7 CAP
6 VBG
5 STROBE
Figure 2. 8-Lead PDIP
The AD584J and AD584K are specified for operation from 0°C
to +70°C, and the AD584S and AD584T are specified for the
−55°C to +125°C range. All grades are packaged in a hermetically
sealed, eight-terminal TO-99 metal can, and the AD584J and
AD584K are also available in an 8-lead PDIP.
PRODUCT HIGHLIGHTS
1. The flexibility of the AD584 eliminates the need to design-
in and inventory several different voltage references.
Furthermore, one AD584 can serve as several references
simultaneously when buffered properly.
2. Laser trimming of both initial accuracy and temperature
coefficient results in very low errors overtemperature
without the use of external components.
3. The AD584 can be operated in a 2-terminal Zener mode at
a 5 V output and above. By connecting the input and the
output, the AD584 can be used in this Zener configuration
as a negative reference.
4. The output of the AD584 is configured to sink or source
currents. This means that small reverse currents can be
tolerated in circuits using the AD584 without damage to
the reference and without disturbing the output voltage
(10 V, 7.5 V, and 5 V outputs).
5. The AD584 is available in versions compliant with MIL-STD-
883. Refer to the Analog Devices current AD584/883B data
sheet for detailed specifications. This can be found under the
Additional Data Sheets section of the AD584 product page.
Rev. C
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©1978–2012 Analog Devices, Inc. All rights reserved.
Free Datasheet http://www.Datasheet4U.com

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AD584 pdf, ピン配列
Data Sheet
AD584
SPECIFICATIONS
VIN = 15 V and 25°C, unless otherwise noted.
Specifications shown 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.
Table 1.
Model
OUTPUT VOLTAGE TOLERANCE
Maximum Error at Pin 1 for Nominal
Outputs of
10.000 V
7.500 V
5.000 V
2.500 V
OUTPUT VOLTAGE CHANGE
Maximum Deviation from 25°C Value, TMIN to TMAX1
10.000 V, 7.500 V, and 5.000 V Outputs
2.500 V Output
Differential Temperature Coefficients Between Outputs
QUIESCENT CURRENT
Temperature Variation
TURN-ON SETTLING TIME TO 0.1%
NOISE (0.1 Hz TO 10 Hz)
LONG-TERM STABILITY
SHORT-CIRCUIT CURRENT
LINE REGULATION (NO LOAD)
15 V ≤ VIN ≤ 30 V
(VOUT + 2.5 V) ≤ VIN ≤ 15 V
LOAD REGULATION
0 ≤ IOUT ≤ 5 mA, All Outputs
OUTPUT CURRENT
VIN ≥ VOUT + 2.5 V
Source at 25°C
Source TMIN to TMAX
Sink TMIN to TMAX
TEMPERATURE RANGE
Operating
Storage
PACKAGE OPTION
8-Pin Metal Header (TO-99, H-08)
8-Lead Plastic Dual In-Line Package (PDIP, N-8)
AD584J
Min Typ
Max
AD584K
Min Typ
Max
Unit
±30
±20
±15
±7.5
±10
±8
±6
±3.5
mV
mV
mV
mV
30
30
5
0.75 1.0
1.5
200
50
25
30
0.002
0.005
20 50
15 ppm/°C
15 ppm/°C
3 ppm/°C
0.75 1.0 mA
1.5 µA/°C
200 µs
50 µV p-p
25 ppm/1000 Hrs
30 mA
0.002 %/V
0.005 %/V
20 50 ppm/mA
10 10
55
55
mA
mA
mA
0 70 0
−65 +175 −65
70 °C
+175 °C
AD584JH
AD584JN
AD584KH
AD584KN
1 Calculated as average over the operating temperature range.
Rev. C | Page 3 of 12
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3Pages


AD584 電子部品, 半導体
AD584
Data Sheet
THEORY OF OPERATION
APPLYING THE AD584
With power applied to Pin 8 and Pin 4 and all other pins open,
the AD584 produces a buffered nominal 10.0 V output between
Pin 1 and Pin 4 (see Figure 3). The stabilized output voltage can
be reduced to 7.5 V, 5.0 V, or 2.5 V by connecting the programming
pins as shown in Table 4.
Table 4.
Output
Voltage (V)
7.5
5.0
2.5
Pin Programming
Join the 2.5 V (Pin 3) and 5.0 V (Pin 2) pins.
Connect the 5.0 V pin (Pin 2) to the output pin (Pin 1).
Connect the 2.5 V pin (Pin 3) to the output pin (Pin 1).
The options shown in Table 4 are available without the use of any
additional components. Multiple outputs using only one AD584
can be provided by buffering each voltage programming pin
with a unity-gain, noninverting op amp.
VSUPPLY
8
AD584
10V
VOUT
1.215V
24kΩ
5V
*
2.5V
12kΩ
6kΩ
VBG
6kΩ
1
2
3
6
R4
R1
R3
R2
COMMON 4
approximately 20 V, even for the large values of R1. Do not
omit R2; choose its value to limit the output to a value that can
be tolerated by the load circuits. If R2 is zero, adjusting R1 to its
lower limit results in a loss of control over the output voltage.
When precision voltages are set at levels other than the standard
outputs, account for the 20% absolute tolerance in the internal
resistor ladder.
Alternatively, the output voltage can be raised by loading the
2.5 V tap with R3 alone. The output voltage can be lowered by
connecting R4 alone. Either of these resistors can be a fixed
resistor selected by test or an adjustable resistor. In all cases, the
resistors should have a low temperature coefficient to match the
AD584 internal resistors, which have a negative temperature
coefficient less than 60 ppm/°C. If both R3 and R4 are used,
these resistors should have matching temperature coefficients.
When only small adjustments or trims are required, the circuit
in Figure 4 offers better resolution over a limited trim range. The
circuit can be programmed to 5.0 V, 7.5 V, or 10 V, and it can be
adjusted by means of R1 over a range of about ±200 mV. To trim
the 2.5 V output option, R2 (see Figure 4) can be reconnected to
the band gap reference (Pin 6). In this configuration, limit the
adjustment to ±100 mV to avoid affecting the performance of
the AD584.
V+
8
10.0V
1
AD584
5.0V
2
2.5V
3
6 VBG
VOUT
R2
300kΩ
R1
10kΩ
* THE 2.5V TAP IS USED INTERNALLY AS A BIAS POINT
AND SHOULD NOT BE CHANGED BY MORE THAN 100mV
IN ANY TRIM CONFIGURATION.
Figure 3. Variable Output Options
The AD584 can also be programmed over a wide range of output
voltages, including voltages greater than 10 V, by the addition
of one or more external resistors. Figure 3 illustrates the general
adjustment procedure, with approximate values given for the
internal resistors of the AD584. The AD584 may be modeled
as an op amp with a noninverting feedback connection, driven
by a high stability 1.215 V band gap reference (see Figure 5 for
schematic).
When the feedback ratio is adjusted with external resistors, the
output amplifier can be made to multiply the reference voltage
by almost any convenient amount, making popular outputs of
10.24 V, 5.12 V, 2.56 V, or 6.3 V easy to obtain. The most general
adjustment (which gives the greatest range and poorest resolution)
uses R1 and R2 alone (see Figure 3). As R1 is adjusted to its upper
limit, the 2.5V pin (Pin 3) is connected to the output, which
reduces to 2.5 V. As R1 is adjusted to its lower limit, the output
voltage rises to a value limited by R2. For example, if R2 is
approximately 6 kΩ, the upper limit of the output range is
SUB
CAP
Rev. C | Page 6 of 12
4
COMMON
Figure 4. Output Trimming
R40
Q10
C52
C51 Q6
R41
Q20
Q11
Q12
Q14
Q16 Q13
V+
Q7 STROBE
Q8
Q15 R42
R34
R37
Q5
R35
OUT 10V
5V TAP
2.5V TAP
C50 R33 R32
Q3 Q4
R39
R38
Q2
R30 Q1
R31 R36
Figure 5. Schematic Diagram
VBG
V–
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合計 : 12 ページ
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