View AD589JH_157727.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

a
FEATURES Superior Replacement for Other 1.2 V References Wide Operating Range: 50 A to 5 mA Low Power: 60 W Total PD at 50 A Low Temperature Coefficient: 10 ppm/ C max, 0 C to +70 C (AD589M) 25 ppm/ C max, -55 C to +125 C (AD589U) Two-Terminal "Zener" Operation Low Output Impedance: 0.6 No Frequency Compensation Required Low Cost MIL-STD-883 Compliant Versions Available SOIC (SO-8)
1 2 3 -V 4 8 7 6 5 +V
Two-Terminal IC 1.2 V Reference AD589
FUNCTIONAL BLOCK DIAGRAMS Metal Can (H-02A)
+V
AD589
TOP VIEW
-V BOTTOM VIEW
PRODUCT DESCRIPTION
The AD589 is a two-terminal, low cost, temperature compensated bandgap voltage reference which provides a fixed 1.23 V output voltage for input currents between 50 A 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 technology combine to provide excellent performance at low cost. Additionally, the active circuit produces an output impedance ten times lower than 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 AD589J, K, L and M grades are specified for 0C to +70C operation, while the S, T, and U grades are rated for the full -55C to +125C temperature range. All grades are available in a metal can (H-02A) package. The AD589J is also available in an 8-pin SOIC package.
PRODUCT HIGHLIGHTS
1. The AD589 is a two-terminal device which delivers a constant reference voltage for a wide range of input current. 2. Output impedance of 0.6 and temperature coefficients as low as 10 ppm/C insure stable output voltage over a wide range of operating conditions. 3. The AD589 can be operated as a positive or negative reference. "Floating" operation is also possible. 4. The AD589 will operate with total current as low as 50 A (60 W 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 sensitivity to capacitive loading. 6. The AD589 is available in versions compliant with MILSTD-883. Refer to the Analog Devices Military Products Databook or current AD589/883B 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 which 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: 617/329-4700 Fax: 617/326-8703
AD589-SPECIFICATIONS (typical @ I
Model Min OUTPUT VOLTAGE, TA = +25C OUTPUT VOLTAGE CHANGE vs. CURRENT (50 A-5 mA) DYNAMIC OUTPUT IMPEDANCE RMS NOISE VOLTAGE 10 Hz < f < 10 kHz TEMPERATURE COEFFICIENT
1
IN
= 500 A and TA = +25 C unless otherwise noted)
AD589KH Typ Max 1.235 1.250 Min AD589LH Typ Max 1.235 1.250 Min AD589MH Typ Max 1.235 1.250 Unit V
AD589JH/JR Typ Max 1.235 1.250
Min
1.200
1.200
1.200
1.200
5 0.6 5 100 25 0.05 0 AD589JH AD589JR AD589SH Typ Max 1.235 1.250 5 +70 0.05 0 25 2 0.6 5
5 2 0.6 5 50 25 5 +70 AD589KH 0.05 0 AD589LH
5 2 0.6 5 25 25 5 +70 0.05 0
5 2
mV V
10
ppm/C s
TURN-ON SETTLING TIME TO 0.1% OPERATING CURRENT
2
5 +70 AD589MH
mA C
OPERATING TEMPERATURE PACKAGE OPTION Metal Can (H-02A) SOIC (R-8) Model
3
Min OUTPUT VOLTAGE, TA = +25C OUTPUT VOLTAGE CHANGE vs. CURRENT (50 A-5 mA) DYNAMIC OUTPUT IMPEDANCE RMS NOISE VOLTAGE 10 Hz < f < 10 kHz TEMPERATURE COEFFICIENT
1
Min
AD589TH Typ Max 1.235 1.250
AD589UH Min Typ Max 1.200 1.235 1.250
Unit V
1.200
1.200
5 0.6 5 100 25 0.05 -55 AD589SH AD589JR 5 +125 0.05 -55 25 2 0.6 5
5 2 0.6 5 50 25 5 +125 AD589TH 0.05 -25 AD589UH
5 2
mV V
25
ppm/C s
TURN-ON SETTLING TIME TO 0.1% OPERATING CURRENT
2
5 +125
mA C
OPERATING TEMPERATURE PACKAGE OPTION Metal Can (H-02A) SOIC (SO-8)
3
NOTES 1 See the following page for explanation of temperature coefficient measurement method. 2 Optimum performance is obtained at currents below 500 A. For current operation below 200 A, stray shunt capacitances should be limited to 20 pF or increased to 1F. If strays can not be avoided, operation at 500 A and a shunt capacitor of at least 1000 pF are recommended. 3 H = Hermetic Metal Can; SO = SOIC. Specifications shown in boldface are tested on all production units at final electrical test. Specifications subject to change without notice.
ABSOLUTE MAXIMUM RATINGS
AD589 CHIP DIMENSIONS AND PAD LAYOUT
Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 mA Reverse Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 mA Power Dissipation1 . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 mW Storage Temperature . . . . . . . . . . . . . . . . . . . -65C to +175C Operating Junction Temperature Range . . . . -55C to +150C Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . . +300C
NOTE 1 Absolute maximum power dissipation is limited by maximum current through the device. Maximum rating at elevated temperatures must be computed assuming TJ 150C, and JA = 400 = C/W.
0.040 (1.016)
0.060 (1.524) THE AD589 IS AVAILABLE IN CHIP FORM WITH FULLY TESTED AND GUARANTEED SPECIFICATIONS. CONSULT FACTORY FOR AVAILABLE GRADES AND PRICING.
-2-
REV. B
Understanding the Specifications-AD589
VOLTAGE VARIATION VS. TEMPERATURE DYNAMIC PERFORMANCE
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 on the previous page represent the slopes of the diagonals of the error band from +25C to TMIN and +25C to TMAX.
1.2370
Many low power instrument manufacturers are becoming increasingly 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 displays 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 1 millivolt is about 25 s, and there is no long thermal tail appearing after that point.
200mV
100 90
10mV
10s
1.2365
OUTPUT VOLTAGE - V
10 0%
1.2360
1.2355
+V
Figure 3. Output Settling Characteristics
1.2350
R1 Q5 R5 R6
1.2345 -50
-25
0
+25
+50
+75
+100
+125
Q8 R2 R7 Q3 R3 Q4 C1 Q9
TEMPERATURE - C
Figure 1. Typical AD589 Temperature Characteristics
1000
Q1 R4
Q7 Q2
Hz
-V
NOISE SPECTRAL DENSITY - nV/
100
Figure 4. Schematic Diagram
10
0 10 100 1k 10k FREQUENCY - Hz 100k 1M
Figure 2. Noise Spectral Density
REV.B
-3-
AD589
APPLICATION INFORMATION
+5V 6.2k +V
COMMON
+5V 6.8k
b. With 7107 Panel Meter A/D Figure 7. AD589 Used as Reference for CMOS A/D Converters
AD589
10k
VOUT
Figure 5. Basic Configuration for 1.2 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 which produces a buffered 10 V output. Total supply current for this circuit is approximately 2 mA.
AD589
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.
BIT 1 MSB VDD BIT 10 LSB
2
3
4
5
6
7
8
9
AD589
+15V 15k 7 2 6 AD108A 3 4 0.01F 1k 8 1 1k 10V
+15V REF
14
15 R1 39k -15V R2 5k GND 3 2 OUT2
AD7533 SERIES
1 OUT1
16 RFB
VOUT = 0 TO 1.00V AD542L
8.2k
Figure 8. AD589 as Reference for 10-Bit CMOS DAC Figure 6. Single Supply Buffered 10 V Reference
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 A/D converters.
+5V 5.6k +V
OUTLINE DIMENSIONS AND PIN DESIGNATIONS
Dimensions shown in inches and (mm).
0.209 (5.31) DIA 0.230 (5.84)
0.10 (2.54) 0.195 (4.95) DIA 0.178 (4.52)
0.150 (3.81) 0.125 (3.17)
6.8k
AD589
7109
REF+ REF- REF OUT
45
2k
0.028 (0.71) 0.048 (1.22) 0.015 (0.38) 0.019 (0.48) 0.500 (12.7) MIN
0.036 (0.91) 0.046 (1.17)
a. With 7109 12-Bit Binary A/D
-4-
REV. B
PRINTED IN U.S.A.
C547c-2-7/88
The AD589 functions as a two-terminal shunt-type regulator. It provides a constant 1.23 V output for a wide range of input current from 50 A to 5 mA. Figure 5 shows the simplest configuration 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.
10k
AD589
7107
REF HI REF LO
1k

▲Up To Search▲

Price & Availability of AD589JH

	To Download AD589JH Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .