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FEATURES
Four Programmable Output Voltages:
10.000 V, 7.500 V, 5.000 V, 2.500 V
Laser-Trimmed to High Accuracies
No External Components Required
Trimmed Temperature Coefficient:
5 ppm/ C Max, 0 C to 70 C (AD584L)
15 ppm/ C Max, –55 C to +125 C (AD584T)
Zero Output Strobe Terminal Provided
Two Terminal Negative Reference
Capability (5 V and above)
Output Sources or Sinks Current
Low Quiescent Current: 1.0 mA Max
10 mA Current Output Capability
MIL-STD-883 Compliant Versions Available
Pin Programmable
Precision Voltage Reference
AD584*
PIN CONFIGURATIONS
8-Lead TO-99
TAB
8
10.0V
1
5.0V
2
V+
7
CAP
6
AD584
TOP VIEW
(Not to Scale)
5
4
V
BG
2.5V
3
COMMON
STROBE
8-Lead DIP
10.0V
1
5.0V
2
8
+V
7
CAP
TOP VIEW
2.5V
3
(Not to Scale)
6
V
BG
AD584
GENERAL DESCRIPTION
COMMON
4
5
STROBE
The AD584 is an eight-terminal precision voltage reference offer-
ing 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. Input voltage may 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 which 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 drain by the AD584 is reduced to
about 100
µA.
In the “on” state the total supply current is typi-
cally 750
µA
including the output buffer amplifier.
The AD584 is recommended for use as a reference for 8-, 10-,
or 12-bit D/A converters which require an external precision
reference. The device is also ideal for all types of A/D convert-
ers of up to 14-bit accuracy, either successive approximation or
integrating designs, and in general can offer better performance
than that provided by standard self-contained references.
The AD584J, K, and L are specified for operation from 0°C to
70°C; the AD584S and T are specified for the –55°C to +125°C
range. All grades are packaged in a hermetically sealed eight-
terminal TO-99 metal can; the AD584 J and K are also available
in an 8-lead plastic DIP.
*Protected
by U.S. Patent No. 3,887,863; RE 30,586.
PRODUCT HIGHLIGHTS
1. The flexibility of the AD584 eliminates the need to design-in
and inventory several different voltage references. Further
more one AD584 can serve as several references simultaneously
when buffered properly.
2. Laser trimming of both initial accuracy and temperature coeffi-
cient results in very low errors over temperature without the
use of external components. The AD584LH has a maximum
deviation from 10.000 V of
±
7.25 mV from 0°C to 70°C.
3. The AD584 can be operated in a two-terminal “Zener” mode
at 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 toler-
ated in circuits using the AD584 without damage to the refer-
ence 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 Military Products Databook
or current AD584/883B data sheet for detailed specifications.
REV. B
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. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2001
Analog electronics
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