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2-terminal ic temperature transducer ad590 rev. e 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. specifications subject to change without notice. no license is granted by implication or otherwise under any patent or patent rights of analog devices. trademarks and registered trademarks are the property of their respective owners. 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 ?2006C2009 analog devices, inc. all rights reserved. features linear current output: 1 a/k wide temperature range: ?55c to +150c probe-compatible ceramic sensor package 2-terminal device: voltage in/current out laser trimmed to 0.5c calibration accuracy (ad590m) excellent linearity: 0.3c over full range (ad590m) wide power supply range: 4 v to 30 v sensor isolation from case low cost general description the ad590 is a 2-terminal integrated circuit temperature trans- ducer that produces an output current proportional to absolute temperature. for supply voltages between 4 v and 30 v, the device acts as a high impedance, constant current regulator passing 1 a/k. laser trimming of the chip s thin-film resistors is used to calibrate the device to 298.2 a output at 298.2 k (25c). the ad590 should be used in any temperature-sensing application below 150c in which conventional electrical temperature sensors are currently employed. the inherent low cost of a monolithic integrated circuit combined with the elimination of support circuitry makes the ad590 an attractive alternative for many temperature measurement situations. linearization circuitry, precision voltage amplifiers, resistance measuring circuitry, and cold junction compensation are not needed in applying the ad590. in addition to temperature measurement, applications include temperature compensation or correction of discrete components, biasing proportional to absolute temperature, flow rate measure- ment, level detection of fluids and anemometry. the ad590 is available in chip form, making it suitable for hybrid circuits and fast temperature measurements in protected environments. the ad590 is particularly useful in remote sensing applications. the device is insensitive to voltage drops over long lines due to its high impedance current output. any well-insulated twisted pair is sufficient for operation at hundreds of feet from the receiving circuitry. the output characteristics also make the ad590 easy to multiplex: the current can be switched by a cmos multiplexer, or the supply voltage can be switched by a logic gate output. pin configurations 00533-024 +? 00533-001 nc = no connect top view (not to scale) nc 1 v+ 2 v? 3 nc 4 nc nc nc nc 8 7 6 5 figure 1. 2-lead flatpack figure 2. 8-lead soic 0 0533-025 ? + figure 3. 3-pin to-52 product highlights 1. the ad590 is a calibrated, 2-terminal temperature sensor requiring only a dc voltage supply (4 v to 30 v). costly transmitters, filters, lead wire compensation, and lineari- zation circuits are all unnecessary in applying the device. 2. state-of-the-art laser trimming at the wafer level in conjunction with extensive final testing ensures that ad590 units are easily interchangeable. 3. superior interface rejection occurs because the output is a current rather than a voltage. in addition, power requirements are low (1.5 mw @ 5 v @ 25c). these features make the ad590 easy to apply as a remote sensor. 4. the high output impedance (>10 m) provides excellent rejection of supply voltage drift and ripple. for instance, changing the power supply from 5 v to 10 v results in only a 1 a maximum current change, or 1c equivalent error. 5. the ad590 is electrically durable: it withstands a forward voltage of up to 44 v and a reverse voltage of 20 v. therefore, supply irregularities or pin reversal does not damage the device.
ad590 rev. e | page 2 of 16 table of contents features .............................................................................................. 1 ? general description ......................................................................... 1 ? pin configurations ........................................................................... 1 ? product highlights ........................................................................... 1 ? revision history ............................................................................... 2 ? specifications ..................................................................................... 3 ? ad590j and ad590k specifications ......................................... 3 ? ad590l and ad590m specifications ....................................... 4 ? absolute maximum ratings ............................................................ 5 ? esd caution .................................................................................. 5 ? product description ..........................................................................6 ? explanation of temperature sensor specifications ..................7 ? calibration error ...........................................................................7 ? error vs. temperature: calibration error trimmed out .........7 ? error vs. temperature: no user trims .......................................7 ? nonlinearity ...................................................................................7 ? voltage and thermal environment effects ...............................8 ? general applications ...................................................................... 10 ? outline dimensions ....................................................................... 13 ? ordering guide .......................................................................... 14 ? revision history 9/09rev. d to rev. e changes to product description section ...................................... 6 updated outline dimensions ....................................................... 13 changes to ordering guide .......................................................... 14 1/06rev. c to rev. d updated format .................................................................. universal changes to figure 4 equation ......................................................... 4 9/03rev. b to rev. c added soic-8 package ...................................................... universal change to figure 1 ........................................................................... 1 updated outline dimensions ....................................................... 13 added ordering guide .................................................................. 14
ad590 rev. e | page 3 of 16 specifications ad590j and ad590k specifications 25c and v s = 5 v, unless otherwise noted. 1 table 1. ad590j ad590k parameter min typ max min typ max unit power supply operating voltage range 4 30 4 30 v output nominal current output @ 25c (298.2k) 298.2 298.2 a nominal temperature coefficient 1 1 a/k calibration error @ 25c 5.0 2.5 c absolute error (over rated performance temperature range) without external calibration adjustment 10 5.5 c with 25c calibration error set to zero 3.0 2.0 c nonlinearity for to-52 and flatpack packages 1.5 0.8 c for 8-lead soic package 1.5 1.0 c repeatability 2 0.1 0.1 c long-term drift 3 0.1 0.1 c current noise 40 40 pa/ hz power supply rejection 4 v v s 5 v 0.5 0.5 a/v 5 v v s 15 v 0.2 0.2 v/v 15 v v s 30 v 0.1 0.1 a/v case isolation to either lead 10 10 10 10 effective shunt capacitance 100 100 pf electrical turn-on time 20 20 s reverse bias leakage current (reverse voltage = 10 v) 4 10 10 pa 1 specifications shown in boldface are tested on all production units at final electrical test. results from those tests are used to calculate outgoing quality l evels. all minimum and maximum specifications are guar anteed, although only those shown in boldface are tested on all production units. 2 maximum deviation between +25c readings after temperature cycling betw een ?55c and +150c; guaranteed, not tested. 3 conditions: constant 5 v, constant 125c; guaranteed, not tested. 4 leakage current doubles every 10c.
ad590 rev. e | page 4 of 16 ad590l and ad590m specifications 25c and v s = 5 v, unless otherwise noted. 1 table 2. ad590l ad590m parameter min typ max min typ max unit power supply operating voltage range 4 30 4 30 v output nominal current output @ 25c (298.2k) 298.2 298.2 a nominal temperature coefficient 1 1 a/k calibration error @ 25c 1.0 0.5 c absolute error (over rated performance temperature range) c without external calibration adjustment 3.0 1.7 c with 25c calibration error set to zero 1.6 1.0 c nonlinearity 0.4 0.3 c repeatability 2 0.1 0.1 c long-term drift 3 0.1 0.1 c current noise 40 40 pa/hz power supply rejection 4 v v s 5 v 0.5 0.5 a/v 5 v v s 15 v 0.2 0.2 a/v 15 v v s 30 v 0.1 0.1 a/v case isolation to either lead 10 10 10 10 effective shunt capacitance 100 100 pf electrical turn-on time 20 20 s reverse bias leakage current (reverse voltage = 10 v) 4 10 10 pa 1 specifications shown in boldface are tested on all production units at final electrical test. results from those tests are used to calculate outgoing quality l evels. all minimum and maximum specifications are guar anteed, although only those shown in boldface are tested on all production units. 2 maximum deviation between +25c readings after temperature cycling betw een ?55c and +150c; guaranteed, not tested. 3 conditions: constant 5 v, constant 125c; guaranteed, not tested. 4 leakage current doubles every 10c. 00533-002 +223 ?50 +273 0 +298 +25 +323 +50 +373 +100 +423 +150 ?100 0 +100 +200 +300 +32 +70 +212 k c f ( ) 15.273 32 9 5 +=?= ckfc o o o 7.459 32 5 9 += ? ? ? ? ? ? += frcf oo o o figure 4. temperature scale conversion equations
ad590 rev. e | page 5 of 16 absolute maximum ratings table 3. parameter rating forward voltage ( e+ or e?) 44 v reverse voltage (e+ to e?) ?20 v breakdown voltage (case e+ or e?) 200 v rated performance temperature range 1 ?55c to +150c storage temperature range 1 ?65c to +155c lead temperature (soldering, 10 sec) 300c 1 the ad590 was used at ?100c an d +200c for short periods of measurement with no physical damage to the device. however, the absolute errors specified apply to only the rated performance temperature range. stresses above those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational section of this specification is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. esd caution esd (electrostatic discharge) sensitive device. electros tatic charges as high as 4000 v readily accumulate on the human body and test equipment and can discharge wi thout detection. although this product features proprietary esd protection circuitry, permanent dama ge may occur on devices subjected to high energy electrostatic discharges. therefore, proper esd precautions are recommended to avoid performance degradation or loss of functionality.
ad590 rev. e | page 6 of 16 product description the ad590 is a 2-terminal temperature-to-voltage transducer. it is available in a variety of accuracy grades and packages. when using the ad590 in die form, the chip substrate must be kept electrically isolated (floating) for correct circuit operation. the ad590 is available in laser-trimmed chip form; consult the chip catalog for details v+ v? 42mils 66mils 00533-003 figure 5. metallization diagram the ad590 uses a fundamental property of the silicon transistors from which it is made to realize its temperature proportional characteristic: if two identical transistors are operated at a constant ratio of collector current densities, r, then the difference in their base-emitter voltage is (kt/q)(in r). because both k (boltzmans constant) and q (the charge of an electron) are constant, the resulting voltage is directly proportional to absolute temperature (ptat). 1 in the ad590, this ptat voltage is converted to a ptat current by low temperature coefficient thin-film resistors. the total current of the device is then f orced to be a multiple of this ptat current. figure 6 is the schematic diagram of the ad590. in this figure, q8 and q11 are the transistors that produce the ptat voltage. r5 and r6 convert the voltage to current. q10, whose collector current tracks the collector currents in q9 and q11, supplies all the bias and substrate leakage current for the rest of the circuit, forcing the total current to be ptat. r5 and r6 are laser-trimmed on the wafer to calibrate the device at 25c. figure 7 shows the typical vCi characteristic of the circuit at 25c and the temperature extremes. 00533-004 q1 q2 r2 1040 ? q5 q3 q4 c1 26pf q6 q7 q12 r4 11k ? q8 q10 q9 chip substrate q11 1 1 8 r5 146 ? r6 820 ? r1 260 ? + ? r3 5k ? figure 6. schematic diagram 00533-005 012 +150c 423 298 218 +25c i out ( a) ?55c 34 supply voltage (v) 56 3 0 figure 7. vCi plot 1 for a more detailed description, se e m.p. timko, a two-terminal ic temperature transducer, ieee j. solid state circuits, vol. sc-11, p. 784-788, dec. 1976. understanding the specificationsCad590.
ad590 rev. e | page 7 of 16 explanation of temperature sensor specifications the way in which the ad590 is specified makes it easy to apply it in a wide variety of applications. it is important to understand the meaning of the various specifications and the effects of the supply voltage and thermal environment on accuracy. the ad590 is a ptat 1 current regulator. that is, the output current is equal to a scale factor times the temperature of the sensor in degrees kelvin. this scale factor is trimmed to 1 a/k at the factory, by adjusting the indicated temperature (that is, the output current) to agree with the actual temperature. this is done with 5 v across the device at a temperature within a few degrees of 25c (298.2k). the device is then packaged and tested for accuracy over temperature. calibration error at final factory test, the difference between the indicated temperature and the actual temperature is called the calibration error. since this is a scale factory error, its contribution to the total error of the device is ptat. for example, the effect of the 1c specified maximum error of the ad590l varies from 0.73c at ?55c to 1.42c at 150c. figure 8 shows how an exaggerated calibration error would vary from the ideal over temperature. 00533-006 i actua l 298.2 i out ( a) 298.2 temperature (k) actual transfer function ideal transfer function calibration error figure 8. calibration error vs. temperature the calibration error is a primary contributor to the maximum total error in all ad590 grades. however, because it is a scale factor error, it is particularly easy to trim. figure 9 shows the most elementary way of accomplishing this. to trim this circuit, the temperature of the ad590 is measured by a reference temperature sensor and r is trimmed so that v t = 1 mv/k at that temperature. note that when this error is trimmed out at one temperature, its effect is zero over the entire temperature range. in most applications, there is a current-to-voltage conversion resistor (or, as with a current input adc, a reference) that can be trimmed for scale factor adjustment. 00533-007 5 v r 100 ? v t = 1mv/k ad590 950 ? + ? + ? + ? figure 9. one temperature trim error vs. temperature: calibration error trimmed out each ad590 is tested for error over the temperature range with the calibration error trimmed out. this specification could also be called the variance from ptat, because it is the maximum difference between the actual current over temperature and a ptat multiplication of the actual current at 25c. this error consists of a slope error and some curvature, mostly at the temperature extremes. figure 10 shows a typical ad590k temperature curve before and after calibration error trimming. after calibration trim 00533-008 absolute error (c) 2 0 ?2 ?55 150 temperature (c) calibration error before calibration trim figure 10. effect to scale factor trim on accuracy error vs. temperature: no user trims using the ad590 by simply measuring the current, the total error is the variance from ptat, described above, plus the effect of the calibration error over temperature. for example, the ad590l maximum total error varies from 2.33c at ?55c to 3.02c at 150c. for simplicity, only the large figure is shown on the specification page. nonlinearity nonlinearity as it applies to the ad590 is the maximum deviation of current over temperature from a best-fit straight line. the nonlinearity of the ad590 over the ?55c to +150c range is superior to all conventional electrical temperature sensors such as thermocouples, rtds, and thermistors. figure 11 shows the nonlinearity of the typical ad590k from figure 10 . 1 t(c) = t(k) ? 273.2. zero on the kelvin scale is ab solute zero; there is no lower temperature.
ad590 rev. e | page 8 of 16 0.8c max 0.8c max 00533-009 absolute error (c) 1.6 ?1.6 ?0.8 0 0.8 ?55 150 temperature (c) 0.8c max figure 11. nonlinearity figure 12 shows a circuit in which the nonlinearity is the major contributor to error over temperature. the circuit is trimmed by adjusting r1 for a 0 v output with the ad590 at 0c. r2 is then adjusted for 10 v output with the sensor at 100c. other pairs of temperatures can be used with this procedure as long as they are measured accurately by a reference sensor. note that for 15 v output (150c), the v+ of the op amp must be greater than 17 v. also, note that v? should be at least ?4 v; if v? is ground, there is no voltage applied across the device. 00533-010 30pf ad707a 100mv/c v t = 100mv/c ad590 ad581 v? 35.7k ? r1 2k ? 97.6k ? r2 5k ? 27k ? 15 v figure 12. 2-temperature trim 00533-011 tempe r a ture (c) 2 ?2 0 ?55 0 150 100 temperature (c) figure 13. typical 2-trim accuracy voltage and thermal environment effects the power supply rejection specifications show the maximum expected change in output current vs. input voltage changes. the insensitivity of the output to input voltage allows the use of unregulated supplies. it also means that hundreds of ohms of resistance (such as a cmos multiplexer) can be tolerated in series with the device. it is important to note that using a supply voltage other than 5 v does not change the ptat nature of the ad590. in other words, this change is equivalent to a calibration error and can be removed by the scale factor trim (see figure 10). the ad590 specifications are guaranteed for use in a low thermal resistance environment with 5 v across the sensor. large changes in the thermal resistance of the sensors environment change the amount of self-heating and result in changes in the output, which are predictable but not necessarily desirable. the thermal environment in which the ad590 is used determines two important characteristics: the effect of self- heating and the response of the sensor with time. figure 14 is a model of the ad590 that demonstrates these characteristics. 00533-012 jc ca t j p c ch c c t a + ? t c figure 14. thermal circuit model as an example, for the to-52 package, jc is the thermal resistance between the chip and the case, about 26c/w. ca is the thermal resistance between the case and the surroundings and is determined by the characteristics of the thermal connection. power source p represents the power dissipated on the chip. the rise of the junction temperature, t j , above the ambient temperature, t a , is t j ? t a = p ( jc + ca ) (1) table 4 gives the sum of jc and ca for several common thermal media for both the h and f packages. the heat sink used was a common clip-on. using equation 1, the temperature rise of an ad590 h package in a stirred bath at 25c, when driven with a 5 v supply, is 0.06c. however, for the same conditions in still air, the temperature rise is 0.72c. for a given supply voltage, the temperature rise varies with the current and is ptat. therefore, if an application circuit is trimmed with the sensor in the same thermal environment in which it is used, the scale factor trim compensates for this effect over the entire temperature range.
ad590 rev. e | page 9 of 16 table 4. thermal resistance jc + ca (c/watt) (sec) 1 medium h f h f aluminum block 30 10 0.6 0.1 stirred oil 2 42 60 1.4 0.6 moving air 3 with heat sink 45 C 5.0 C without heat sink 115 190 13.5 10.0 still air with heat sink 191 C 108 C without heat sink 480 650 60 30 1 is dependent upon velocity of oil; average of several velocities listed above. 2 air velocity @ 9 ft/sec. 3 the time constant is defined as the time required to reach 63.2% of an instantaneous temperature change. the time response of the ad590 to a step change in temperature is determined by the thermal resistances and the thermal capacities of the chip, c ch , and the case, c c . c ch is about 0.04 ws/c for the ad590. c c varies with the measured medium, because it includes anything that is in direct thermal contact with the case. the single time constant exponential curve of figure 15 is usually sufficient to describe the time response, t (t). table 4 shows the effective time constant, , for several media. 00533-013 sensed temperature t final t initial 4 time t(t) = t initial + (t final ? t initial ) (1 ? e ?t/ ) figure 15. time response curve
ad590 rev. e | page 10 of 16 general applications figure 16 demonstrates the use of a low cost digital panel meter for the display of temperature on either the kelvin, celsius, or fahrenheit scales. for kelvin temperature, pin 9, pin 4, and pin 2 are grounded; for fahrenheit temperature, pin 4 and pin 2 are left open. 00533-014 6 5 9 4 2 offset calibration 5 v gain scaling offset scaling 3 8 ad2040 gnd a d590 + ? figure 16. variab le scale display the above configuration yields a 3-digit display with 1c or 1f resolution, in addition to an absolute accuracy of 2.0c over the ?55c to +125c temperature range, if a one-temperature calibration is performed on an ad590k, ad590l, or ad590m. connecting several ad590 units in series, as shown in figure 17 , allows the minimum of all the sensed temperatures to be indicated. in contrast, using the sensors in parallel yields the average of the sensed temperatures. 00533-015 ad590 + ? ad590 + ? ad590 + ? + v t min 10k ? ( 0.1%) ? + ? ad590 + ? + ? + v t avg 333.3 ? (0.1%) ? 5v 15 v figure 17. series and parallel connection the circuit in figure 18 demonstrates one method by which differential temperature measurements can be made. r1 and r2 can be used to trim the output of the op amp to indicate a desired temperature difference. for example, the inherent offset between the two devices can be trimmed in. if v+ and v? are radically different, then the difference in internal dissipation causes a differential internal temperature rise. this effect can be used to measure the ambient thermal resistance seen by the sensors in applications such as fluid-level detectors or anemometry. 00533-016 ad590l #2 + ? ad590l #1 + ? r4 10k ? r3 10k ? r1 5m ? r2 50k ? v + (t1 ? t2) (10mv/c) v? ad707a ? + figure 18. differential measurements figure 19 is an example of a cold junction compensation circuit for a type j thermocouple using the ad590 to monitor the reference junction temperature. this circuit replaces an ice-bath as the thermocouple reference for ambient temperatures between 15c and 35c. the circuit is calibrated by adjusting r t for a proper meter reading with the measuring junction at a known reference temperature and the circuit near 25c. using components with the tcs as specified in figure 19 , compensation accuracy is within 0.5c for circuit temperatures between 15c and 35c. other thermocouple types can be accommodated with different resistor values. note that the tcs of the voltage reference and the resistors are the primary contributors to error. 00533-017 + ? reference junction iron + ? 7.5 v ad590 ad580 constantan measuring junction resistors are 1%, 50ppm/c meter + ? ? + c u 52.3 ? 8.66k ? v out r t 1k ? figure 19. cold junction compensati on circuit for type j thermocouple
ad590 rev. e | page 11 of 16 figure 20 is an example of a current transmitter designed to be used with 40 v, 1 k systems; it uses its full current range of 4 to 20 ma for a narrow span of measured temperatures. in this example, the 1 a/k output of the ad590 is amplified to 1 ma/c and offset so that 4 ma is equivalent to 17c and 20 ma is equivalent to 33c. r t is trimmed for proper reading at an intermediate reference temperature. with a suitable choice of resistors, any temperature range within the operating limits of the ad590 can be chosen. 00533-018 30pf v + 4m a = 17c 12 m a = 25c 2 0 m a = 33c ? + ? + ad581 v out r t 5k ? 10 ? 10k ? 12.7k ? 35.7k ? 5k ? 500 ? ad590 ad707a ? + 0.01 f v? figure 20. 4 to 20 ma current transmitter figure 21 is an example of a variable temperature control circuit (thermostat) using the ad590. r h and r l are selected to set the high and low limits for r set . r set could be a simple pot, a calibrated multiturn pot, or a switched resistive divider. powering the ad590 from the 10 v reference isolates the ad590 from supply variations while maintaining a reasonable voltage (~7 v) across it. capacitor c1 is often needed to filter extraneous noise from remote sensors. r b is determined by the of the power transistor and the current requirements of the load. 00533-019 lm311 ? + c1 2 3 4 1 7 10k ? r set r l r b r h v? v+ v + ad590 ? + ad581 out heating elements gnd 10v figure 21. simple temperature control circuit figure 22 shows that the ad590 can be configured with an 8-bit dac to produce a digitally controlled setpoint. this particular circuit operates from 0c (all inputs high) to 51.0c (all inputs low) in 0.2c steps. the comparator is shown with 1.0c hysteresis, which is usually necessary to guard-band for extraneous noise. omitting the 5.1 m resistor results in no hysteresis. 00533-020 mc 1408/1508 dac out ?15v +5v ref output high- temperature above setpoint output low- temperature below setpoint 1.25k ? +5v +2.5v ad580 20p f bit 1 bit 8 bit 2 bit 7 bit 3 bit 6 bit 4 bit 5 1.15k ? 200 ? 200 ? , 15t 6.98k ? 1k ? , 15t ?15v ad590 ? + ?15v +5v +5v 1 4 2 3 8 7 lm311 1k ? 5.1m ? 6.8k ? figure 22. dac setpoint the voltage compliance and the reverse blocking characteristic of the ad590 allow it to be powered directly from 5 v cmos logic. this permits easy multiplexing, switching, or pulsing for minimum internal heat dissipation. in figure 23 , any ad590 connected to a logic high passes a signal current through the current measuring circuitry, while those connected to a logic zero pass insignificant current. the outputs used to drive the ad590s can be employed for other purposes, but the additional capacitance due to the ad590 should be taken into account. 0 0533-021 5 v cmos gates a d590 1k ? (0.1%) ? + ? + ? + ? + figure 23. ad590 driven from cmos logic
ad590 rev. e | page 12 of 16 cmos analog multiplexers can also be used to switch ad590 current. due to the ad590s current mode, the resistance of such switches is unimportant as long as 4 v is maintained across the transducer. figure 24 shows a circuit that combines the principle demonstrated in figure 23 with an 8-channel cmos multiplexer. the resulting circuit can select 1 to 80 sensors over only 18 wires with a 7-bit binary word. the inhibit input on the multiplexer turns all sensors off for minimum dissipation while idling. figure 25 demonstrates a method of multiplexing the ad590 in the 2-trim mode (see figure 12 and figure 13 ). additional ad590s and their associated resistors can be added to multiplex up to eight channels of 0.5c absolute accuracy over the temperature range of ?55c to +125c. the high temperature restriction of 125c is due to the output range of the op amps; output to 150c can be achieved by using a 20 v supply for the op amp. 00533-022 4028 cmos bcd-to- decimal decoder 11 9 10 11 6 16 10 v 3 14 2 ad590 1 0 2 10k ? 10mv/c 4051 cmos analog multiplexer ? + 22 ? + 12 ? + 02 ? + 21 ? + 11 ? + 01 ? + 20 ? + 10 ? + 00 8 12 row select column select inhibit 78 13 10 0 13 1 14 2 15 binary to 1-of-8 decoder logic level interface 10v 16 figure 24. matrix multiplexer 00533-023 ? + ad590l ? + ad590l decoder/ driver s1 s2 s8 ad7501 ?15v 2k ? 35.7k ? 5k ? 97.6k ? 2k ? 35.7k ? 5k ? 97.6k ? +15v ttl/dtl to cmos interface binary channel select en ?15v 27k ? 10mv/c v+ ad707a +15v ad581 v out ? + ?5v to ?15v figure 25. 8-channel multiplexer
ad590 rev. e | page 13 of 16 outline dimensions 0.210 (5.34) 0.200 (5.08) 0.190 (4.83) 0.0065 (0.17) 0.0050 (0.13) 0.0045 (0.12) 0.050 (1.27) 0.041 (1.04) 0.240 (6.10) 0.230 (5.84) 0.220 (5.59) positive lead indicator 0.500 (12.69) min 0.093 (2.36) 0.081 (2.06) 0.055 (1.40) 0.050 (1.27) 0.045 (1.14) 0.019 (0.48) 0.017 (0.43) 0.015 (0.38) 0.015 (0.38) typ 0.030 (0.76) typ figure 26. 2-lead ceramic flat package [flatpack] (f-2) dimensions shown in inches and (millimeters) controlling dimensions are in inches; millimeter dimensions (in parentheses) are rounded-off inch equivalents for reference only and are not appropriate for use in design. 0.250 (6.35) min 0.150 (3.81) 0.115 (2.92) 0.050 (1.27) max 0.019 (0.48) 0.016 (0.41) 0.021 (0.53) max 0.030 (0.76) max 0.195 (4.95) 0.178 (4.52) 0.230 (5.84) 0.209 (5.31) 0.500 (12.70) min 0.046 (1.17) 0.036 (0.91) 0.048 (1.22) 0.028 (0.71) 0.050 (1.27) t.p. 3 1 0.100 (2.54) t. p. 0.050 (1.27) t. p. 45 t.p. 2 base & seating plane 022306-a figure 27. 3-pin metal header package [to-52] (h-03-1) dimensions shown in inches and (millimeters)
ad590 rev. e | page 14 of 16 controlling dimensions are in millimeters; inch dimensions (in parentheses) are rounded-off millimeter equivalents for reference only and are not appropriate for use in design. compliant to jedec standards ms-012-a a 012407-a 0.25 (0.0098) 0.17 (0.0067) 1.27 (0.0500) 0.40 (0.0157) 0.50 (0.0196) 0.25 (0.0099) 45 8 0 1.75 (0.0688) 1.35 (0.0532) seating plane 0.25 (0.0098) 0.10 (0.0040) 4 1 85 5.00 (0.1968) 4.80 (0.1890) 4.00 (0.1574) 3.80 (0.1497) 1.27 (0.0500) bsc 6.20 (0.2441) 5.80 (0.2284) 0.51 (0.0201) 0.31 (0.0122) coplanarity 0.10 figure 28. 8-lead standard small outline package [soic_n] narrow body (r-8) dimensions shown in millimeters and (inches) ordering guide model temperature range packag e description package option ad590jf 1 ?55c to +150c 2-lead flatpack f-2 ad590jh 1 ?55c to +150c 3-pin to-52 h-03-1 ad590jr ?55c to +150c 8-lead soic_n r-8 ad590jrz 2 ?55c to +150c 8-lead soic_n r-8 ad590jrz-rl 2 ?55c to +150c 8-lead soic_n r-8 ad590kf 1 ?55c to +150c 2-lead flatpack f-2 ad590kh 1 ?55c to +150c 3-pin to-52 h-03-1 ad590kr ?55c to +150c 8-lead soic_n r-8 ad590kr-reel ?55c to +150c 8-lead soic_n r-8 ad590krz 2 ?55c to +150c 8-lead soic_n r-8 AD590KRZ-RL 2 ?55c to +150c 8-lead soic_n r-8 ad590lf 1 ?55c to +150c 2-lead flatpack f-2 ad590lh 1 ?55c to +150c 3-pin to-52 h-03-1 ad590mf 1 ?55c to +150c 2-lead flatpack f-2 ad590mh 1 ?55c to +150c 3-pin to-52 h-03-1 ad590jchips ?55c to +150c 3-pin to-52 h-03-1 1 available in 883b; consul t sales for data sheet. 2 z = rohs compliant part.
ad590 rev. e | page 15 of 16 notes
ad590 rev. e | page 16 of 16 notes ?2006C2009 analog devices, inc. all rights reserved. trademarks and registered trademarks are the prop erty of their respective owners. d00533-0-9/09(e)

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