
REV. B
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a
AD584*
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
Pin Programmable
Precision Voltage Reference
PIN CONFIGURATIONS
8-Lead TO-99
7
8
1
4
5
6
3
2
CAP
VBG
STROBE
COMMON
TAB
10.0V
5.0V
2.5V
V+
AD584
TOP VIEW
(Not to Scale)
8-Lead DIP
TOP VIEW
(Not to Scale)
8
7
6
5
1
2
3
4
10.0V
5.0V
2.5V
+V
CAP
VBG
STROBECOMMON
AD584
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/ⴗC Max, 0ⴗC to 70ⴗC (AD584L)
15 ppm/ⴗC Max, –55ⴗC to +125ⴗC (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
GENERAL DESCRIPTION
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.
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.
*Protected by U.S. Patent No. 3,887,863; RE 30,586.