AD589JRZ ,Two-Terminal IC 1.2 V ReferenceSPECIFICATIONS (Typical @ I = 500 A and T = 25C, unless otherwise noted.)IN AAD589JH/Model AD589J ..
AD589KH ,LC2MOS 5 us 8-Bit ADC with Track/Holdcharacteristics of themanufacturers have begun to use a maximum limit error bandAD589. This charact ..
AD589KH. ,LC2MOS 5 us 8-Bit ADC with Track/HoldSpecifications–AD589VOLTAGE VARIATION VS. TEMPERATURE DYNAMIC PERFORMANCESome confusion exists in t ..
AD589MH ,LC2MOS 5 us 8-Bit ADC with Track/Holdspecifications.REV. BInformation furnished by Analog Devices is believed to be accurate andreliable ..
AD589SH ,LC2MOS 5 us 8-Bit ADC with Track/Holdapplications.maintain full accuracy under changing load conditions.5. The AD589 is an exact replace ..
AD589TH/883B , 2-Terminal IC 1.2 V Reference
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AD589JR-REEL-AD589JRZ
Two-Terminal IC 1.2 V Reference
ANALOG
DEVICES
Z-Terminal IE
1.2 ll Reference
FEATURES
Superior Replacement for Other 1.2 V References
Wide Operating Range: 50 p.A to 5 mA
Low Power: 60 ww Total PD at 50 WA
Low Temperature Coefficient:
10 ppmf''C Max, 0°C to 70°C (AD589M)
2-Terminal Zener Operation
Low Output Impedance: 0.6 n
No Frequency Compensation Required
Low Cost
MlL-STD-883 Compliant Versions Available
PRODUCT DESCRIPTION
The AD589 is a 2-terminal, low cost, temperature compensated
band gap voltage reference that provides a fixed 1.23 V output
voltage for input currents between 50 WA and 5.0 mA.
The high stability of the AD589 is primarily dependent upon
the matching and thermal tracking of the on-chip components.
Analog Devices' precision bipolar processing and thin-film tech-
nology combine to provide excellent performance at low cost.
Additionally, the active circuit produces an output impedance 10X
lower than the typical low-TC Zener diodes. This feature allows
operation with no external components required to maintain full
accuracy under changing load conditions.
The AD589 is available in seven versions. The AD589], AD589K,
AD589L, and AD589M grades are specified for 0°C to +70°C
operation, while the AD589S and AD589T grades are rated for
the full -5VC to +125°C temperature range. All grades are avail-
able in a metal can (H-02) package. The AD589J is also available
in an 8-lead SOIC package.
REV. C
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed byAnalog 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 oth-
erwise under any patent or patent rights of Analog Devices.Trademarks
and registered trademarks are the property of their respective owners.
FUNCTIONAL BLOCK DIAGRAMS
SOIC (R-8) Metal Can (H-02)
1 El +v
-V 4 5
AD589 E -v
TOP VIEW
(Not to Scale) BOTTOM VIEW
PRODUCT HIGHLIGHTS
1. The AD589 is a 2-terminal device that delivers a constant
reference voltage for a wide range of input current.
2. Output impedance of 0.6 n and temperature coefficients as
low as 10 ppm/°C ensure stable output voltage over a wide
range of operating conditions.
3. The AD589 can be operated as a positive or negative refer-
ence. Floating operation is also possible.
4. The AD589 will operate with a total current as low as 50 WA
(60 " total power dissipation), ideal for battery-powered
instrument applications.
5. The AD589 is an exact replacement for other 1.2 V references,
offering superior temperature performance and reduced sensi-
tivity to capacitive loading.
6. The AD589 is available in versions compliant with MIL-
STD-883. Consult factory for 883 data sheet.
One Technology Way, PO. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703 © 2004 Analog Devices, Inc.All rights reserved.
All 588-S P E c I F I iWI il NS (Typical @ Im = 500 pLA and T, = 25°C, unless otherwise noted.)
AD589JHI
Model AD589JR AD589KH AD589LH AD589MH
Min Typ Max Min Typ Max Min Typ Max Min Typ Max Unit
OUTPUTVOLTAGE,TA = 25''C 1.200 1.235 1.250 1.200 1.235 1.250 1.200 1.235 1.250 1.200 1.235 1.250 V
OUTPUT VOLTAGE CHANGE
VERSUS CURRENT
50 " to 5 mA 5 5 5 5 mV
DYNAMIC OUTPUT IMPEDANCE 0.6 2 0.6 2 0.6 2 0.6 2 ft
RMS NOISE VOLTAGE
10Hz
TEMPERATURE COEFFICIENTl 100 50 25 10 ppm/°C
TURN-ON SETTLING TIME TO 0.1% 25 25 25 25 us
OPERATING CURRENT2 0.05 5 0.05 5 0.05 5 0.05 5 mA
OPERATING TEMPERATURE 0 70 0 70 0 70 0 70 ''C
PACKAGE OPTION3
Metal Can (fl-02A) AD5891H AD589KH AD589LH AD589MH
SOIC (R-8) AD589JR
Model AD589SH AD589TH
Min Typ Max Min Typ Max Unit
OUTPUTVOLTAGE,TA = 25°C 1.200 1.235 1.250 1.200 1.235 1.250 V
OUTPUT VOLTAGE CHANGE
VERSUS CURRENT
50 HA to 5 mA 5 5 mV
DYNAMIC OUTPUT IMPEDANCE 0.6 2 0.6 2 ft
RMS NOISE VOLTAGE
10HzTEMPERATURE COEFFICIENT1 100 50 ppm/°C
TURN-ON SETTLING TIME TO 0.1% 25 25 us
OPERATING CURRENT2 0.05 5 0.05 5 mA
OPERATING TEMPERATURE -55 +125 -55 + 125 "C
PACKAGE OPTION3
Metal Can (H-02) AD589SH AD589TH
SOIC (R-8) AD589JR
1See the Voltage Variation versus Temperature section for explanation of temperature coefficient measurement method.
2Optimum performance is obtained at currents below 500 pA. For current operation below 200 WA, stray shunt capacitances should be limited to 20 pF or increased to
1 p.F. If strays cannot be avoided, operation at 500 WA and a shunt capacitor of at least 1000 pF are recommended.
311 = Hermetic Metal Can; R = SOIC.
Specifications shown in boldface are tested on all production units at final electrical test.
Specifications subject to change without notice.
REV. C
ABSOLUTE MAXIMUM RATINGS
Current ..................................... 10 mA
Reverse Current ............................... 10 mA
Power Dissipation' ........................... 125 mW
Storage Temperature _...................
Operating Junction Temperature Range ......
-6VC to +175°C
-550C to +150°C
Lead Temperature (Soldering, 10 sec) ................ 300°C
'Absolute maximum power dissipation is limited by maximum current through the
device. Maximum rating at elevated temperatures must be computed assuming
T] S 150°C and em = 400 = C/W.
AD589 CHIP DIMENSIONS AND PAD LAYOUT
-i--fiirtijii'j,
(23:2) r-,,-----,',
(1.524)
THE AD589 IS AVAILABLE IN CHIP FORM WITH FULLY TESTED
AND GUARANTEED SPECIFICATIONS. CONSULT FACTORY FOR
AVAILABLE GRADES AND PRICING.
ORDERING GUIDE
Temperature No. of Parts Per Temperature
Model Coefficient (ppmf'C) Package Description Package Option Reel/Tray Range (°C)
AD589JH 100 Metal Can (TO-51) H-02 100 0 to +70
AD589JR 100 SOIC-8 R-8 98 0 to +70
AD589JRZ' 100 SOIC-8 R-8 98 0 to +70
AD589JR-REEL 100 SOIC-8 R-8 2,500 0 to +70
AD589JRZ-REEL" 100 SOIC-8 R-8 2,500 0 to +70
AD589JCHIPS 100 DICE - 25 0 to +70
AD589KH 50 Metal Can (TO-51) H-02 100 0 to +70
AD589LH 25 Metal Can (TO-51) H-02 100 O to +70
AD589MH 10 Metal Can (TO-51) H-02 100 0 to +70
AD589SH 100 Metal Can (TO-51) H-02 100 -55 to +125
AD589SH/883B 100 Metal Can (TO-51) H-02 100 -55 to +125
AD589TH 50 Metal Can (TO-51) H-02 100 -55 to +125
AD589TH/883B 50 Metal Can (TO-51) H-02 100 -55 to +125
AD589TCHIPS 50 DICE - 25 -55 to +125
'Z = Pb-free part
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000V readily accumulate
on the human body and test equipment and can discharge without detection. Although the AD589 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. C
UNDERSTANDING THE SPECIFICATIONS
Voltage Variation Versus Temperature
Some confusion exists in the area of defining and specifying
reference voltage error over temperature. Historically, references
have been characterized using a maximum deviation per degree
Centigrade, i.e., 10 ppm/°C. However, because of nonlinearities
in temperature characteristics, which 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 measurement of the output at
3, 5, or more different temperatures to guarantee that the output
voltage will fall within the given error band. The temperature
characteristics of the AD589 consistently follows the curve shown
in Figure 1. Three-point measurement guarantees the error band
over the specified temperature range. The temperature coefficients
specified in the Specifications section represent the slopes of the
diagonals of the error band from 25°C to TMIN and 25°C to TMAX.
1.2365 /,/'''''"'"-"''''ssss,,
1.2360 / N,
OUTPUT VOLTAGE (V)
TEMPERATURE (''C)
75 100 125
Figure 1. TypicalAD589 Temperature Characteristics
I ""s,
2. 100 N,
t 'ss,
U) "s,
10 10 1k 10k 100k M
FREQUENCY (Hz)
Figure 2. Noise Spectral Density
Dynamic Performance
Many low power instrument manufacturers are becoming increase
ingly concerned with the turn-on characteristics of the components
being used in their systems. Fast turn-on components often enable
the end user to keep power off when not needed and yet respond
quickly when the power is turned on for operation. Figure 3 dis-
plays the turn-on characteristics of the AD589. This characteristic
is generated from cold-start operation and represents the true turn-
on waveform after an extended period with the supplies off. The
figure shows both the coarse and fine transient characteristics of
the device; the total settling time to within i1 mV is about 25 us,
and there is no long thermal tail appearing after that point.
CllEaiilCll%illtiiiilCl
IiEEEiEilliaiaiaiaiaiiil
mmuumuumu
ClCE7ftClrrErlrnrrEnrn
BEBE EEE
Cll=llCllCllCllCllCllCllCl
Figure 3. Output Settling Characteristics
(r R1 R5 R6
t' R2 it' R CI
Q3 Q4 ''''_]] . '
h Q2 V27
01 t' R4
Figure 4. Schematic Diagram
REV. C
APPLICATION INFORMATION
The AD589 functions as a 2-terminal shunt-type regulator. It
provides a constant 1.23 V output for a wide range of input
current from 50 WA to 5 mA. Figure 5 shows the simplest con-
figuration for an output voltage of 1.2 V or less. Note that no
frequency compensation is required. If additional filtering is
desired for ultralow noise applications, minimum recommended
capacitance is 1000 pF.
fln— 5V
it 6.8KO
AD589 I'.-'
- Vour
Figure 5. Basic Configuration for 12 V or Less
The AD589 can also be used as a building block to generate
other values of reference voltage. Figure 6 shows a circuit that
produces a buffered 10 V output.T0tal supply current for this
circuit is approximately 2 mA.
:Ea.2kn
Figure 6. Single-Supply Buffered 10 VReference
The low power operation of the AD589 makes it ideal for use in
battery-operated portable equipment. It is especially useful as a
reference for CMOS analog-to-digital converters. Figure 7 shows
the AD589 used in conjunction with two popular integrating type
CMOS ADCs.
REV. C
5.6knt
6.8knit + 7109
AD589 il
2m rca". REF+
- REF-
REF OUT
a. With 7109 12-Bit BinaryADC
6.2k01’
10kn a + 7107
AD589 i
1m F REF HI
- REF Lo
COMMON
b. With 7107 Panel MeterADC
Figure 2 AD589 Used as Reference for CMOS ADCs
The AD589 also is useful as a reference for CMOS multiplying
DACs, such as the AD7533. These DACs require a negative
reference voltage in order to provide a positive output range.
Figure 8 shows the AD589 used to supply an equivalent -1.0 V
reference to an AD7533.
C) +15V
AD7533 SERIES
3 - - - - NSN- - - -
2 1 16
-15V OUT2 0UT1 RFB
. VOUT =
o TO1.00V
V AD542L '
Figure 8. AD589 as Reference for 10-Bit CMOS DAC
