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2.5 v/3.0 v high precision reference data sheet ad780 rev. f document feedback 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 re spective owners. one technology way, p.o. box 9106, norwood, ma 02062 - 9106, u.s.a. tel: 781.329.4700 ? 2012 analog devices, inc. all rights reserved. technical support www.analog.com features pin p rogrammable 2.5 v or 3.0 v o utput ultralow d rift: 3 ppm/ c m ax high a ccuracy: 2.5 v or 3.0 v 1 mv m ax low n oise: 100 nv/ hz noise reduction capability low quiescent current : 1 ma m ax output trim capability plug - in upgr ade for present references temperature output pin series or shunt mode operation ( 2.5 v, 3.0 v ) functional block diagram 00841-001 r16 r10 +v in r4 r5 q6 q7 r11 r14 r13 r15 nc v out trim gnd o/p select 2.5v ? nc 3.0v ? gnd temp nc nc = no connect ad780 7 2 1 3 4 8 5 6 figure 1. product description the ad780 is an ultrahigh precision band gap reference voltage that pr ovides a 2.5 v or 3.0 v output from inputs between 4.0 v and 36 v. low initial error and temperature drift combined with low output noise and the ability to drive any value of capacitance make the ad780 the ideal choice for enhancing the performance of hig h resolution adcs and dacs, and for any general - purpose precision reference application. a unique low headroom design facilitates a 3.0 v output from a 5.0 v 10% input, providing a 20% boost to the dynamic range of an adc over performance with existing 2.5 v references. the ad780 can be used to source or sink up to 10 ma , and can be used in series or shunt mode, thus allowing positive or negative output voltages without external components. this makes it suitable for virtually any high performance referenc e application. unlike some competing references, the ad780 has no region of possible instability. the part is stable under all load conditions when a 1 f bypass capacitor is used on the supply. a temperature output pin on the ad780 provides an output vol tage that varies linearly with temperature, allowing the part to be configured as a temperature transducer while providing a stable 2.5 v or 3.0 v output. the ad780 is a pin compatible performance upgrade for the lt1019(a) C 2.5 and the ad680. the latter is targeted toward low power applications. the ad780 is available in three grades in pdip and soic packages. the ad780an, ad780ar, ad780bn, ad780br, and ad780cr are specified for operation from ? 40 c to +85 c. product highlights 1. the ad780 provides a pin pr ogrammable 2.5 v or 3.0 v output from a 4 v to 36 v input. 2. laser trimming of both initial accuracy and temperature coefficients results in low errors over temperature without the use of external components. the ad780bn has a maximum variation of 0.9 mv fro m ? 40 c to +85 c. 3. for applications that requir e even higher accuracy, an optional fine - trim connection is provided. 4. the ad780 noise is extremely low, typically 4 mv p - p from 0.1 hz to 10 hz and a wideband spectral noise density of typically 100 nv/ hz . this ca n be further reduced, if desired, by using two external capacitors. 5. the temperature output pin enables the ad780 to be configured as a temperature transducer while providing a stable output reference.
ad780 data sheet rev. f | page 2 of 12 table of contents specifications ..................................................................................... 3 absolute maximum ratings ............................................................ 4 notes ............................................................................................... 4 esd caution .................................................................................. 4 theory of operation ........................................................................ 5 applying the ad780 ......................................................................... 6 noise performance ....................................................................... 6 noise comparison ........................................................................ 7 temperature performance ........................................................... 7 temperature output pin ............................................................. 7 temperature transducer circuit ................................................ 8 supply current over temperature .............................................8 turn - on time ...............................................................................8 dynamic performance ..................................................................8 line regulation ..............................................................................9 precision reference for high resolution 5 v data converters ..........................................................................................................9 4.5 v reference from 5 v supply ............................................. 10 negative ( C 2.5 v) reference ..................................................... 10 outline dimensions ....................................................................... 11 ordering guide ............................................................................... 12 revision history 12/12 rev. e to rev. f updated outline dimensions ........................................................ 11 changes to ordering guide ........................................................... 12 5 /04 data s heet c hanged from rev. d to rev. e updated format .................................................................. universal changes to temperature transducer circuit section ................... 8 changes to ordering guide ........................................................... 12 1/04 data s heet c hanged from r ev . c to r ev . d. changes to specifications ........................................................ 2 updated ordering guide ......................................................... 3 updated outline dimensions ............................................. 10 5/02 data sheet c hanged from r ev . b to r ev . c. updates to packages ............................................................................ 10
data sheet ad780 rev. f | page 3 of 12 specifications t a = 25 c, v in = 5 v, unless otherwise noted. table 1 . ad7 80an/ad780ar ad780cr ad780bn/ad780br parameter min typ max min typ max min typ max unit output voltage 2.5 v out 2.495 2.505 2.4985 2.5015 2.499 2.501 v 3.0 v out 2.995 3.005 2.9950 3.0050 2.999 3.001 v output voltage drift 1 ? 40c to +85c 7 7 3 ppm/c ? 55c to +125c 20 20 ppm/c line regulation 2.5 v output, 4 v +v in 36 v, t min to t max 10 10 10 v/v 3.0 v output, 4.5 v +v in 36 v , t min to t max 10 10 10 v/v load regulation, seri es mode sourcing 0 ma < i out < 10 ma 50 50 50 v/ma t min to t max 75 75 75 v/ma sinking ?10 ma < i out < 0 ma 75 75 75 v/ma ?40c to +85c 75 75 75 v/ma ?55c to +125c 150 150 150 v/ma load regulation, shunt mode i < i shunt < 10 ma 75 75 75 v/ma quiescent current, 2.5 v series mode 2 C 40c to +85c 0.75 1.0 0.75 1.0 0.75 1.0 ma ?55c to +125c 0.8 1.3 0.8 1.3 0.8 1.3 ma minimum shunt current 0.7 1.0 0.7 1.0 0.7 1.0 m a output noise 0.1 hz to 10 hz 4 4 4 v p -p spectral density, 100 hz 100 100 100 nv/ hz long - term stability 3 20 20 20 ppm/1000 hr trim range 4.0 4.0 4.0 % temperature pin vo ltage output @ 25c 500 560 620 500 560 620 500 560 620 mv temperature sensitivity 1.9 1.9 1.9 mv/c output resistance 3 3 3 k? short - circuit current to ground 30 30 30 ma temperature range specified performance (a, b, c ) C 40 +85 C 40 +85 C 40 +85 c operating performance (a, b, c) 4 C 55 +125 C 55 +125 C 55 +125 c 1 maximum output voltage drift is guaranteed for all packages. 2 3.0 v mode typically adds 100 a to the quiescent current. also, i q increases by 2 a/v above an input voltage of 5 v. 3 the long - term stability specification is noncumulative. the drift in subsequent 1,000 hour periods is significantly lower than in the first 1,000 hour period. 4 the operating temperature range is defined as the temperature extremes at whi ch the device will still function. parts may deviate from their specified performance outside th eir specified temperature range.
ad780 data sheet rev. f | page 4 of 12 absolute maximum rat ings table 2 . parameter values +v in to ground 36 v trim pin to ground 36 v temp pin to ground 36 v po wer dissipation (25 c) 500 mw storage temperature ?65 c to +150 c lead temperature (soldering 10 sec) 300 c output protection output safe for indefinite short to ground and momentary short to v in . esd classification class 1 (1000 v) stresses above those listed under absolute maximum ratings may cause permanent damage to the device. this is a stress rating only; functional operation of the device at these or any conditions above those indicated in the operational sections of this specification is not implied. exposure to absolute maximum specifications for extended periods may affect device reliability. 00841-002 nc = no connect ad780 top view (not to scale) nc 1 +v in 2 temp 3 gnd 4 2.5v/3.0v o/pselect (nc or gnd) nc v out trim 8 7 6 5 figure 2. pin configuration , 8 - lead pdip and soic packages 00841-003 gnd temp +v in trim 2.5v/3.0v o/p select v out gnd figure 3 . die layout notes both v out pads should be connected to the output. die thic kness: the standard thickness of analog devices bipolar dice is 24 mil 2 mil. die dimensions: the dimensions given have a tolerance of 2 mil. backing: the standard backside surface is silicon (not plated). analog devices does not recommend gold - backed d ice for most applications. edges: a diamond saw is used to separate wafers into dice, thus providing perpendicular edges halfway through the die. in contrast to scribed dice, this technique provides a more uniform die shape and size. the perpendicular edg es facilitate handling (such as tweezer pickup), while the uniform shape and size simplify substrate design and die attach. top surface: the standard top surface of the die is covered by a layer of glassivation. all areas are covered except bonding pads an d scribe lines. surface metallization : the metallization to analog devices bipolar dice is aluminum. minimum thickness is 10,00 0 ? . bonding pads: all bonding pads have a minimum size of 4.0 mil by 6.0 mil. the passivation windows have a minimum size of 3. 6 mil by 5.6 mil. esd caution esd (electrostatic discharge) sensitive device. electrostatic charges as high as 4000 v readily accumulate on the human body and test equipment and can discharge without detection. although this product 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.
data sheet ad780 rev. f | page 5 of 12 theory of operation band g ap references are the high performance solution for low supply voltage and low power voltage reference applications. in this technique, a voltage with a positive temperature coefficient is combined with the negative coefficient of a transistors v be to pro duce a constant band gap voltage. in the ad780, the band gap cell contains two npn transistors (q6 and q7) that differ in emitter area by 12 . the difference in their v be s produces a ptat current in r5. this, in turn, produces a ptat voltage across r4 that , when combined with the v be of q7, produces a voltage ( v bg ) that does not vary with temperature. precision laser trimming of the resistors and other patented circuit techniques are used to further enhance the drift performance. 00841-004 r16 r10 +v in r4 r5 q6 q7 r11 r14 r13 r15 nc v out trim gnd o/p select 2.5v ? nc 3.0v ? gnd temp nc nc = no connect ad780 7 2 1 3 4 8 5 6 figure 4 . schematic diagram the output voltage of the ad780 is determined by the configuration of resistors r13, r14, and r15 in the amplifiers feedback loop. this sets the output to either 2.5 v or 3.0 v , depending on whether r15 (pin 8) is grounded or not connected. a unique feature of the ad780 is the low headroom design of the high gain amplifier, which produces a precision 3 v output from an input voltage as low as 4.5 v (or 2.5 v from a 4.0 v input). the amplifier design also allows the part to work with +v in = v out when current is forced into the output terminal. this allows the ad780 to work as a 2 - terminal shunt regulator, providing a ? 2.5 v or ? 3.0 v reference voltage output without external components. the ptat voltage is also used to provide the user with a thermometer output voltage (at pin 3) that increases at a rate of approximately 2 mv/ c. the ad780s nc (pin 7) is a 20 k? resis tor to +v in that is used solely for production test purposes. users who are currently using the lt1019 self - heater pin (pin 7) must take into account the different load on the heater supply.
ad780 data sheet rev. f | page 6 of 12 applying the ad780 the ad780 can be used without any external components to achieve specified performance. if power is supplied to pin 2 and pin 4 is grounded, pin 6 provides a 2.5 v or 3.0 v output depending on whether pin 8 is left unconnected or grounded. a bypass capacitor of 1 f (+v in to gnd) should be used if the load capacitance in the application is expected to be greater than 1 nf. the ad780 in 2.5 v mode typically draws 700 a of i q at 5 v. this increases by ~2 a/v up to 36 v. 00841-005 nc temp +v in r null v out trim gnd o/p select 2.5v ? nc 3.0v ? gnd nc r pot 1 f ad780 nc = no connect 1 7 6 5 8 4 2 3 figure 5 . optional fine - trim circuit initial error can be nulled using a single 25 k? potentiometer connected between v out , trim, and gnd. this is a coarse trim with an adjustment range of 4% , and is only included here for compatibility purposes with other references. a fine trim can be implemented by ins erting a large value resistor (e.g., 1 m ? to 5 m?) in series with the wiper of the potentiometer (see figure 5 ). the trim range, expressed as a fraction of the output, is simply greater than or equal to 2.1 k?/r null for either the 2.5 v or 3.0 v mode. the external null resistor affects the overall temperature coefficient by a factor equal to the percentage of v out nulled. for example, a 1 mv (0.03%) shift in the output caused by the trim circuit, with a 100 ppm/ c null resistor, a dds less than 0.06 ppm/ c to the output drift (0.03% 200 ppm/ c, since the resistors internal to the ad780 also have temperature coefficients of less than 100 ppm/ c). noise performance the impressive noise performance of the ad780 can be further improve d, if desired, by adding two capacitors: a load capacitor ( c1 ) between the output and ground , and a compensation capacitor ( c2 ) between the temp pin and ground. suitable values are shown in figure 6 . 100 10 1 0.1 0.1 1 10 100 00841-006 load capacitor, c1 ( f) compensation capacitor, c2 (nf) figure 6 . compensation and load capacitor combinations c1 and c2 also improve the settling performance of the ad780 when subjected to load transients. the improvement in noise performance is shown in figure 7 , figure 8 , figure 9 , and figure 10. 00841-007 0.1 to 10hz amplifier gain = 100 1s 100 v 100 90 10 0% figure 7. standalone noise performance 00841-008 10hz to 10khz no amplifier 10ms 20 v 100 90 10 0% figure 8. standalone noise p erformance
data sheet ad780 rev. f | page 7 of 12 00841-009 nc temp +v in v out trim gnd o/p select 2.5v ? nc 3.0v ? gnd nc 1 ? f ad780 nc = no connect 1 7 6 5 8 4 2 3 c2 c1 figure 9. noise reduction circuit noise comparison the wideband noise performance of the ad780 can also be expressed in ppm. the typical performance with c1 and c2 is 0.6 ppm; without external capacitors, typical performance is 1.2 ppm. this performance is, respectively, 7 and 3 lower than the specified performance of the lt1019. 00841-010 10hz to 10khz no amplifier 10ms 20 ? v 100 90 10 0% figure 10. reduced noise performance with c1 = 100 f, c2 = 100 nf temperature performance the ad780 provides superior performance over temperature by means of a combination of patented circuit design techniques, precision thin-film resistors, and drift trimming. temperature performance is specified in terms of ppm/c; because of nonlinearity in the temperature characteristic, the box test method is used to test and specify the part. the nonlinearity takes the form of the characteristic s-shaped curve shown in figure 11. the box test method forms a rectangular box around this curve, enclosing the maximum and minimum output voltages over the specified temperature range. the specified drift is equal to the slope of the diagonal of this box. 2.0 ?0.8 ?0.4 0 0.4 0.8 1.2 1.6 ?60 ?40 ?20 0 20 40 60 80 100 120 140 00841-011 temperature ( ?c) error (mv) figure 11. typical ad780bn temperature drift temperature output pin the ad780 provides a temp output (pin 3) that varies linearly with temperature. this output can be used to monitor changes in system ambient temperature, and to initiate calibration of the system, if desired. the voltage v temp is 560 mv at 25c, and the temperature coefficient is approximately 2 mv/c. figure 12 shows the typical v temp characteristic curve over temperature taken at the output of the op amp with a noninverting gain of 5. 4.25 4.00 3.75 3.50 3.25 3.00 2.75 2.50 2.25 2.00 ?75 ?50 ?25 0 25 50 75 100 125 150 00841-012 temperature ( ?c) voltage (v out ) circuit calibrated at 25 ?c refer to figure 13 10mv per ?c figure 12. temperature pin transfer characteristic since the temp voltage is acquired from the band gap core circuit, current pulled from this pin has a significant effect on v out . care must be taken to buffer the temp output with a suitable op amp, e.g., an op07, ad820, or ad711 (all of which would result in less than a 100 v change in vout). the relationship between i temp and v out is v out = 5.8 mv/a i temp (2.5 v range ) or v out = 6.9 mv/a i temp (3.0 v range )
ad780 data sheet rev. f | page 8 of 12 notice how sensitive the current dependent factor on v out is. a large amount of current, even in tens of microam p, drawn from the temp pin can cause the v out and temp output to fail. the choice of c1 and c2 was dictated primarily by the need for a relatively flat response that rolled off early in the high frequency noise at the output. however, there is considerabl e margin in the choice of these capacitors. for example, the user can actually put a huge c2 on the temp pin with none on the output pin. however, one must either put very little or a lot of capacitance at the temp pin. intermediate values of capacitance c an sometimes cause oscillation. in any case, the user should follow the recommendation in figure 6 . temperature transduc er circuit the circuit shown in figure 13 is a tempera ture transducer that amplifies the temp output voltage by a gain of a little over +5 to provide a wider full - scale output range. the digital potentiometer can be used to adjust the output so it varies by exactly 10 mv/ c. to minimize resistance changes wi th temperature, resistors with low temperature coefficients, such as metal film resistors, should be used. 00841-013 ad780 gnd r b 1.27k ? (1%) r f 6.04k ? (1%) 4 +v in 2 3 1 f temp r bp 200 ? ad820 10mv/ c 5v figure 13 . differential temperature transducer supply current over temperature the ad780s quiescent current varies sligh tly over temperature and input supply range. the test limit is 1 ma over the industrial and 1.3 ma over the military temperature range. typical performance with input voltage and temperature variation is shown in fig ure 14. 0.85 0.80 0.75 0.70 0.65 0.60 4 36 00841-014 input voltage (v) quiescent current (ma) ?55c +25c +125c figure 14 . typical supply current over temperature turn - on time the time required for the output voltage to reach its final value within a specified error band is defined as the turn - on settling time. the two major fact ors that affect this are the active circuit settling time and the time for the thermal gradients on the chip to stabilize. typical settling performance is shown in figure 15. the ad780 settles to within 0.1% of its final value within 10 s. 5v 0v 2.500v 2.499v 2.498v 00841-015 10 s/div v in v out figure 15 . turn - on settling time performance dynamic performance the output stage of the ad780 has been designed to provide superior static and dynamic load regulation. figure 16 and figure 17 show the performance of the ad780 while driving a 0 ma to 10 ma load.
data sheet ad780 rev. f | page 9 of 12 00841-016 ad780 4 +v in 2 6 1 f v out 249 ? v l v out 0v figure 16 . transient resistive load test circuit 0ma 10ma 00841-017 10 s/div output change (50mv/div) i load v out (c l = 0pf) figure 17 . settling under transient resistive load the dynamic load may be resistive and capacitive. for example, the load may be connected via a long capacitive cable. figure 18 and figure 19 show the performance of the ad780 driving a 1000 pf, 0 ma to 10 ma load. 00841-018 ad780 4 +v in 2 6 1 f v out 249 ? v l v out 0v c l 1000pf figure 18 . capacitive load transient response test circuit 0ma 10ma 00841-019 10 s/div output change (50mv/div) i load v out (c l = 1000pf) figure 19 . settling under dynamic capacitive load line regulation line regulation is a measur e of change in output voltage due to a specified change in input voltage. it is intended to simulate worst - case unregulated supply conditions and is measured in v / v. figure 20 shows typical performance with 4.0 v < v in < 15.0 v. 200 100 0 ? 100 ? 200 4 15 10 00841-020 input voltage (v) output change ( v) t = 25 c figure 20 . output voltage change vs. input voltage precision reference for high resolution 5 v data converters the ad780 is ideally suited to be the reference for most 5 v high resolution adcs. the ad780 is stable under any capacitive load, has superior dynamic load performance , and its 3.0 v output provides the converter with the maximum dynamic range without requiring an additional and expensive buffer amplifier. one of the many adcs that the ad780 is suited for i s the ad7884, a 16 - bit, high speed sampling adc (see figure 21 ). this part previously needed a precision 5 v reference, resistor divider, and buffer amplifier to do this function.
ad780 data sheet rev. f | page 10 of 12 00841-021 +v in ad780 ad7884 v out v ref + f 6 v ref + s 2.5v/3.0v select 8 gnd 4 2 1 ? f 5v figure 21. precision 3 v reference for the ad7884 16-bit, high speed adc the ad780 is also ideal for use with higher resolution converters, such as the ad7710/ad7711/ad7712 (see figure 22. while these parts are specified with a 2.5 v internal reference, the ad780 in 3 v mode can be used to improve the absolute accuracy, temperature stability, and dynamic range. it is shown in figure 22 with the two optional noise reduction capacitors. 00841-022 +v in ad780 ad7710 v out ref in+ 6 2.5v/3.0v o/p select 8 gnd 4 3 2 1 ? f 100nf 5v ref in? 100 ? f figure 22. precision 2.5 v or 3.0 v reference for the ad7710 high resolution, - adc 4.5 v reference from 5 v supply some 5 v high resolution adcs can accommodate reference voltages up to 4.5 v. the ad780 can be used to provide a precision 4.5 v reference voltage from a 5 v supply using the circuit shown in figure 23. this circuit provides a regulated 4.5 v output from a supply voltage as low as 4.7 v. the high quality tantalum 10 f capacitor, in parallel with the ceramic ad780 0.1 f capacitor and the 3.9 resistor, ensures a low output impedance around 50 mhz. 00841-023 ad780 2n2907 v out 5k ? 0.01% 4k ? 0.01% 2.5k ? 3.9? 1k ? 0.1? f 0.1? f 10 ? f 0.1? f op90 + ? v supply 2 4 6 3 7 6 4 2 figure 23. 4.5 v reference from a single 5 v supply negative (C2.5 v) reference the ad780 can produce a negative output voltage in shunt mode by connecting the input and output to ground, and connecting the ad780s gnd pin to a negative supply via a bias resistor, as shown in figure 25. 00841-024 nc temp +v in v out trim gnd o/p select 2.5v ? nc 3.0v ? gnd nc 1 ? f ad780 notes 1. i l = load current 2. i s min = minimum shunt current 3. nc = no connect 1 7 6 5 8 4 2 3 r = v out ? (v?) i l + i s min ?2.5 v out v? figure 24. negative (?2.5 v shunt mode reference) a precise C2.5 v reference capable of supplying up to 100 ma to a load can be implemented with the ad780 in series mode, using the bootstrap circuit shown in figure 25. 0 0841-025 ad780 2n3906 +5v +5v op07 connect if ?3v output desired ?2.5v (i l ? 100ma) ?5v ?5v out 1k ? 1000pf +v in ? + 2 4 68 figure 25. ?2.5 v high load current reference
data sheet ad780 rev. f | page 11 of 12 outline dimensions c o n t r o l l i n g d i m e n s i o n s a r e i n m i l l i m e t e r s ; i n c h d i m e n s i o n s ( i n p a r e n t h e s e s ) a r e r o u n d e d - o f f m i l l i m e t e r e q u i v a l e n t s f o r r e f e r e n c e o n l y a n d a r e n o t a p p r o p r i a t e f o r u s e i n d e s i g n . c o m p l i a n t t o j e d e c s t a n d a r d s m s - 0 1 2 - a a 0 1 2 4 0 7 - a 0 . 2 5 ( 0 . 0 0 9 8 ) 0 . 1 7 ( 0 . 0 0 6 7 ) 1 . 2 7 ( 0 . 0 5 0 0 ) 0 . 4 0 ( 0 . 0 1 5 7 ) 0 . 5 0 ( 0 . 0 1 9 6 ) 0 . 2 5 ( 0 . 0 0 9 9 ) 4 5 8 0 1 . 7 5 ( 0 . 0 6 8 8 ) 1 . 3 5 ( 0 . 0 5 3 2 ) s e a t i n g p l a n e 0 . 2 5 ( 0 . 0 0 9 8 ) 0 . 1 0 ( 0 . 0 0 4 0 ) 4 1 8 5 5 . 0 0 ( 0 . 1 9 6 8 ) 4 . 8 0 ( 0 . 1 8 9 0 ) 4 . 0 0 ( 0 . 1 5 7 4 ) 3 . 8 0 ( 0 . 1 4 9 7 ) 1 . 2 7 ( 0 . 0 5 0 0 ) b s c 6 . 2 0 ( 0 . 2 4 4 1 ) 5 . 8 0 ( 0 . 2 2 8 4 ) 0 . 5 1 ( 0 . 0 2 0 1 ) 0 . 3 1 ( 0 . 0 1 2 2 ) c o p l a n a r i t y 0 . 1 0 figure 26 . 8 - lead standard small outline package [soic _n ] narrow body (r - 8) dimensions shown in millimeters and (inches) compliant t o jedec s t andards ms-001 controlling dimensions are in inches; millimeter dimensions (in p arentheses) are rounded-off inch equi v alents for reference on l y and are not appropri a te for use in design. corner leads m a y be configured as whole or half leads. 070606- a 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) sea ting plane 0.015 (0.38) min 0.210 (5.33) max 0.150 (3.81) 0.130 (3.30) 0. 1 15 (2.92) 0.070 (1.78) 0.060 (1.52) 0.045 (1.14) 8 1 4 5 0.280 (7. 1 1) 0.250 (6.35) 0.240 (6.10) 0.100 (2.54) bsc 0.400 (10.16) 0.365 (9.27) 0.355 (9.02) 0.060 (1.52) max 0.430 (10.92) max 0.014 (0.36) 0.010 (0.25) 0.008 (0.20) 0.325 (8.26) 0.310 (7.87) 0.300 (7.62) 0.195 (4.95) 0.130 (3.30) 0. 1 15 (2.92) 0.015 (0.38) gauge plane 0.005 (0.13) min figure 27 . 8- lead plastic dual - in - line package [pdip] narrow body (n - 8) dimensions shown in inches and (millimeters)
ad780 data sheet rev. f | page 12 of 12 ordering guide model 1 initial error temperature range temperature coefficient package description pa ckage option qty. per tube/reel ad 780anz 5.0 mv ?40c to +85c 7 ppm/c 8 - lead pdip n - 8 50 ad780ar 5.0 mv ?40c to +85c 7 ppm/c 8 - lead soic_n r -8 98 ad780ar - reel7 5.0 mv ?40c to +85c 7 ppm/c 8 - lead soic_n r -8 750 ad780arz 5.0 mv ?40c to +85c 7 ppm/c 8 - lead soic_n r -8 98 ad7 80arz - reel7 5.0 mv ?40c to +85c 7 ppm/c 8 - lead soic_n r -8 1,000 ad780bnz 1.0 mv ?40c to +85c 3 ppm/c 8 - lead pdip n -8 50 ad780br 1.0 mv ?40c to +85c 3 ppm/c 8 - lead soic_n r -8 98 ad780br - reel 1.0 mv ?40c to +85c 3 ppm/c 8 - lea d soic_n r -8 2,500 ad780br - reel7 1.0 mv ?40c to +85c 3 ppm/c 8 - lead soic_n r -8 750 ad780brz 1.0 mv ?40c to +85c 3 ppm/c 8 - lead soic_n r -8 98 ad780brz - reel 1.0 mv ?40c to +85c 3 ppm/c 8 - lead soic_n r -8 2,500 ad780brz - reel7 1.0 mv ? 40c to +85c 3 ppm/c 8 - lead soic_n r -8 750 ad780crz 1.5 mv ?40c to +85c 7 ppm/c 8 - lead soic_n r -8 98 ad780crz - reel7 1.5 mv ?40c to +85c 7 ppm/c 8 - lead soic_n r -8 1,000 1 z = rohs compliant p art. ? 2012 analog d evices, inc. all rights reserved. trademarks and registered trademarks are the property of their respective owners. d00841 - 0- 12/12(f)

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