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hot-swappable, dual i 2 c isolators, 5 kv ADUM2250/adum2251 rev. 0 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 ?2007 analog devices, inc. all rights reserved. features bidirectional i 2 c communication open-drain interfaces suitable for hot-swap applications 30 ma current sink capability 1000 khz operation 3.0 v to 5.5 v supply/logic levels wide body, 16-lead soic package with >8 mm creepage high temperature operation: 105c safety and regulatory approvals ul recognition (pending) 5000 v rms for 1 minute per ul 1577 csa component acceptance notice #5a vde certificate of conformity din v vde v 0884-10 (vde v 0884-10): 2006-12 v iorm = 846 v peak applications isolated i 2 c, smbus, or pmbus interfaces multilevel i 2 c interfaces power supplies networking power-over-ethernet general description the ADUM2250/adum2251 1 are hot-swappable digital isolators with nonlatching bidirectional communication channels that are compatible with i 2 c? interfaces. this eliminates the need for splitting i 2 c signals into separate transmit and receive signals for use with standalone optocouplers. the ADUM2250 provides two bidirectional channels support- ing a complete isolated i 2 c interface. the adum2251 provides one bidirectional channel and one unidirectional channel for those applications where a bidirectional clock is not required. the ADUM2250/adum2251 contain hot-swap circuitry to prevent data glitches when an unpowered card is inserted onto an active bus. these isolators are based on i coupler? chip-scale transformer technology from analog devices, inc. i coupler is a magnetic isolation technology with performance, size, power consump- tion, and functional advantages compared to optocouplers. the ADUM2250/adum2251 integrate i coupler channels with semiconductor circuitry to enable a complete, isolated i 2 c interface in a small form-factor package. 1 protected by u.s. patents 5,952,849; 6,873,065; and 7,075,329; other patents pending. functional block diagrams decode encode encode decode decode encode encode decode g nd 1 nc v dd1 nc sda 1 scl 1 g nd 1 nc gnd 2 nc v dd2 nc sda 2 scl 2 gnd 2 nc 06670-001 8 7 5 6 4 3 2 1 9 10 12 11 13 14 15 16 ADUM2250 nc = no connect decode encode encode decode encode decode gnd 1 nc v dd1 nc sda 1 scl 1 gnd 1 nc gnd 2 nc v dd2 nc sda 2 scl 2 gnd 2 nc 06670-002 8 7 5 6 4 3 2 1 9 10 12 11 13 14 15 16 adum2251 nc = no connect figure 1. ADUM2250 functional block diagram figure 2. adum2251 functional block diagram
ADUM2250/adum2251 rev. 0 | page 2 of 16 table of contents features .............................................................................................. 1 applications....................................................................................... 1 general description ......................................................................... 1 functional block diagrams............................................................. 1 revision history ............................................................................... 2 specifications..................................................................................... 3 electrical characteristics............................................................. 3 test conditions............................................................................. 5 package characteristics ............................................................... 6 regulatory information............................................................... 6 insulation and safety-related specifications............................ 6 din v vde v 0884-10 (vde v 0884-10) insulation characteristics ...............................................................................7 recommended operating conditions .......................................7 absolute maximum ratings ............................................................8 esd caution...................................................................................8 pin configuration and function descriptions..............................9 applications information .............................................................. 10 functional description.............................................................. 10 startup.......................................................................................... 11 magnetic field immunity............................................................. 11 outline dimensions ....................................................................... 13 ordering guide .......................................................................... 13 revision history 4/07revision 0: initial version
ADUM2250/adum2251 rev. 0 | page 3 of 16 specifications electrical characteristics dc specifications all voltages are relative to their respective ground. all minimum/maximum specifications apply over the entire recommended oper ating range, unless otherwise noted. all typical specifications are at t a = 25c, v dd1 = 5 v, and v dd2 = 5 v, unless otherwise noted. table 1. parameter symbol min typ max unit test conditions ADUM2250 input supply current, side 1, 5 v i dd1 2.8 5.0 ma v dd1 = 5 v input supply current, side 2, 5 v i dd2 2.7 5.0 ma v dd2 = 5 v input supply current, side 1, 3.3 v i dd1 1.9 3.0 ma v dd1 = 3.3 v input supply current, side 2, 3.3 v i dd2 1.7 3.0 ma v dd2 = 3.3 v adum2251 input supply current, side 1, 5 v i dd1 2.8 6.0 ma v dd1 = 5 v input supply current, side 2, 5 v i dd2 2.5 4.7 ma v dd2 = 5 v input supply current, side 1, 3.3 v i dd1 1.8 3.0 ma v dd1 = 3.3 v input supply current, side 2, 3.3 v i dd2 1.6 2.8 ma v dd2 = 3.3 v leakage currents i isda1 , i isda2 , i iscl1 , i iscl2 0.01 10 a v sda1 = v dd1 , v sda2 = v dd2 , v scl1 = v dd1 , v scl2 = v dd2 side 1 logic levels logic input threshold 1 v sda1il , v scl1il 500 700 mv logic low output voltages v sda1ol , v scl1ol 600 900 mv i sda1 = i scl1 = 3.0 ma 600 850 mv i sda1 = i scl1 = 0.5 ma input/output logic low level difference 2 v sda1 , v scl1 50 mv side 2 logic levels logic low input voltage v sda2il , v scl2il 0.3 v dd2 v logic high input voltage v sda2ih , v scl2ih 0.7 v dd2 v logic low output voltage v sda2ol , v scl2ol 400 mv i sda2 = i scl2 = 30 ma 1 v il < 0.5 v, v ih > 0.7 v. 2 v s1l = v s1ol C v s1il . this is the minimum difference between the output logic low level and the input logic low threshold within a given component. this ensures that there is no possibility of the part latching up the bus to which it is connected.
ADUM2250/adum2251 rev. 0 | page 4 of 16 ac specifications all voltages are relative to their respective ground. all minimum/maximum specifications apply over the entire recommended oper ating range, unless otherwise noted. all typical specifications are at t a = 25c, v dd1 = 5 v, and v dd2 = 5 v, unless otherwise noted. see figure 3 for a timing test diagram. table 2. parameter symbol min typ max unit test conditions maximum frequency 1000 khz output fall time 5 v operation 4.5 v v dd1 , v dd2 5.5 v, c l1 = 40 pf, r 1 = 1.6 k, c l2 = 400 pf, r 2 = 180 side 1 output (0.9 v dd1 to 0.9 v) t f1 13 26 120 ns side 2 output (0.9 v dd2 to 0.1 v dd2 ) t f2 32 52 120 ns 3 v operation 3.0 v v dd1 , v dd2 3.6 v, c l1 = 40 pf, r 1 = 1.0 k, c l2 = 400 pf, r 2 = 120 side 1 output (0.9 v dd1 to 0.9 v) t f1 13 32 120 ns side 2 output (0.9 v dd2 to 0.1 v dd2 ) t f2 32 61 120 ns propagation delay 5 v operation 4.5 v v dd1 , v dd2 5.5 v, c l1 = c l2 = 0 pf, r 1 = 1.6 k, r 2 = 180 side 1 to side 2, rising edge 1 t plh12 95 130 ns side 1 to side 2, falling edge 2 t phl12 162 275 ns side 2 to side 1, rising edge 3 t plh21 31 70 ns side 2 to side 1, falling edge 4 t phl21 85 155 ns 3 v operation 3.0 v v dd1 , v dd2 3.6 v, c l1 = c l2 = 0 pf, r 1 = 1.0 k, r 2 = 120 side 1 to side 2, rising edge 1 t plh12 82 125 ns side 1 to side 2, falling edge 2 t phl12 196 340 ns side 2 to side 1, rising edge 3 t plh21 32 75 ns side 2 to side 1, falling edge 4 t phl21 110 210 ns pulse-width distortion 5 v operation 4.5 v v dd1 , v dd2 5.5 v, c l1 = c l2 = 0 pf, r 1 = 1.6 k, r 2 = 180 side 1 -to side 2, |t plh12 ? t phl12 | pwd 12 67 145 ns side 2 to side 1, |t plh21 ? t phl21 | pwd 21 54 85 ns 3 v operation 3.0 v v dd1 , v dd2 3.6 v, c l1 = c l2 = 0 pf, r 1 = 1.0 k, r 2 = 120 side 1 to side 2, |t plh12 ? t phl12 | pwd 12 114 215 ns side 2 to side 1, |t plh21 ? t phl21 | pwd 21 77 135 ns common-mode transient immunity 5 |cm h |, |cm l | 25 35 kv/s 1 t plh12 propagation delay is measured from the side 1 input logic threshold to an output value of 0.7 v dd2 . 2 t phl12 propagation delay is measured from the side 1 input logic threshold to an output value of 0.4 v. 3 t plh21 propagation delay is measured from the side 2 input logic threshold to an output value of 0.7 v dd1 . 4 t phl21 propagation delay is measured from the side 2 input logic threshold to an output value of 0.9 v. 5 cm h is the maximum common-mode voltage slew rate that can be sustained while maintaining v o > 0.8 v dd2 . cm l is the maximum common-mod e voltage slew rate that can be sustained while maintaining v o < 0.8 v. the common-mode voltage slew rates apply to both rising and falling common-mode voltage edges. the transient magnitude is the range over which the common mode is slewed.
ADUM2250/adum2251 rev. 0 | page 5 of 16 test conditions decode encode encode decode decode encode encode decode gnd 1 nc v dd1 nc sda 1 scl 1 nc gnd 1 gnd 2 nc v dd2 nc sda 2 scl 2 nc gnd 2 0 6670-005 8 7 5 6 4 3 2 1 12 11 13 14 15 16 r 1 c l1 r 1 c l1 r 2 c l2 r 2 c l2 10 ADUM2250 nc = no connect 9 figure 3. timing test diagram
ADUM2250/adum2251 rev. 0 | page 6 of 16 package characteristics table 3. parameter symbol min typ max unit test conditions resistance (input to output) 1 r i-o 10 12 capacitance (input to output) 1 c i-o 2.2 pf f = 1 mhz input capacitance c i 4.0 pf ic junction-to-ambient thermal resistance ja 45 c/w thermocouple located at center of package underside 1 the device is considered a 2-terminal device; pin 1 to pin 8 are shorted together, and pin 9 to pin 16 are shorted together. regulatory information the ADUM2250/adum2251 is approved by the following organizations. table 4. ul (pending) csa vde recognized under 1577 component recognition program 1 approved under csa component acceptance notice #5a certified according to din v vde v 0884-10 (vde v 0884-10): 2006-12 2 double insulation, 5000 v rms isolation rating reinforced insulation per csa 60950-1-03 and iec 60950-1 600 v rms (848 v peak) maximum working voltage reinforced insulation, 846 v peak reinforced insulation per iec 60601-1 250 v rms (353 v peak) maximum working voltage file e214100 file 205078 file 2471900-4880-0001 1 in accordance with ul1577, each adum225x is proof tested by a pplying an insulation test voltage 6000 v rms for 1 second (cur rent leakage detectio n limit = 10 a). 2 in accordance with din v vde v 0884-10, each adum225x is pr oof tested by applying an insulati on test voltage 1590 v peak for 1 sec (partial discharge detection limit = 5 pc). the * marking branded on the component designates din v vde v 0884-10 approval. insulation and safety-related specifications table 5. parameter symbol value unit conditions rated dielectric insulation voltage 5000 v rms 1-minute duration minimum external air gap (clearance) l(i01) 7.46 min mm measured from input termin als to output terminals, shortest distance through air minimum external tracking (creepage) l(i02) 8.10 min mm measured from input termin als to output terminals, shortest distance path along body minimum internal gap (internal clearance) 0.017 min mm insulation distance through insulation tracking resistance (comparative tracking index) cti >175 v din iec 112/vde 0303 part 1 isolation group iiia material group (din vde 0110, 1/89, table 1)
ADUM2250/adum2251 rev. 0 | page 7 of 16 din v vde v 0884-10 (vde v 0884-10) insulation characteristics note that the * marking on the package denotes din v vde v 0884-10 approval for a 848 v peak working voltage. this isolator is suitable for reinforced isolation only within the safety limit data. maintenance of the safety data is ensured by protective ci rcuits. table 6. description conditions symbol characteristic unit installation classification per din vde 0110 for rated mains voltage 300 v rms i to iv for rated mains voltage 450 v rms i to ii for rated mains voltage 600 v rms i to ii climatic classification 40/105/21 pollution degree (din vde 0110, table 1) 2 maximum working insulation voltage v iorm 846 v peak input-to-output test voltage, method b1 v iorm 1.875 = v pr , 100% production test, t m = 1 sec, partial discharge < 5 pc v pr 1590 v peak input-to-output test voltage, method a v pr after environmental tests subgroup 1 v iorm 1.6 = v pr , t m = 60 sec, partial discharge < 5 pc 1375 v peak after input and/or safety test subgroup 2 and subgroup 3 v iorm 1.2 = v pr , t m = 60 sec, partial discharge < 5 pc 1018 v peak highest allowable overvoltage transient overvoltage, t tr = 10 seconds v tr 6000 v peak safety-limiting values maximum value allowed in the event of a failure; see figure 4 case temperature t s 150 c supply current i dd1 + i dd2 i s 555 ma insulation resistance at t s v io = 500 v r s >10 9 600 500 400 300 200 100 0 safe operating v dd1 current (ma) 0 50 100 150 200 ambient tempearture (c) 06670-003 figure 4. thermal derating curve, dependence of safety-limiting values on case temperature, per din v vde v 0884-10 recommended operat ing conditions table 7. parameter symbol min max unit operating temperature t a ?40 +105 c supply voltages 1 v dd1 , v dd2 3.0 5.5 v input/output signal voltage v sda1 , v scl1 , v sda2 , v scl2 5.5 v capacitive load, side 1 c l1 40 pf capacitive load, side 2 c l2 400 pf static output loading, side 1 i sda1 , i scl1 0.5 3 ma static output loading, side 2 i sda2 , i scl2 0.5 30 ma 1 all voltages are relative to their respective ground. see the applications information section for data on immunity to external magnetic fields.
ADUM2250/adum2251 rev. 0 | page 8 of 16 absolute maximum ratings t a = 25c, unless otherwise noted. table 8. parameter symbol min max unit storage temperature t st ?65 +150 c ambient operating temperature t a ?40 +105 c supply voltages 1 v dd1 , v dd2 ?0.5 +7.0 v input/output voltage, 1 side 1 v sda1 , v scl1 ?0.5 v dd1 + 0.5 v input/output voltage, 1 side 2 v sda2 , v scl2 ?0.5 v dd2 + 0.5 v average output current, per pin 2 i o1 ?18 +18 ma average output current, per pin 2 i o2 ?100 +100 ma common-mode transients 3 ?100 +100 kv/s 1 all voltages are relative to their respective ground. 2 see figure 4 for maximum rated current values for various temperatures. 3 refers to common-mode transients across the insulation barrier. common- mode transients exceeding the abso lute maximum rating may cause latch- up or permanent damage. 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 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
ADUM2250/adum2251 rev. 0 | page 9 of 16 pin configuration and fu nction descriptions 06670-004 nc = no connect ADUM2250/ adum2251 top view (not to scale) gnd 1 * 1 nc 2 v dd1 3 nc 4 gnd 2 * 16 nc 15 v dd2 14 nc 13 sda 1 5 sda 2 12 scl 1 6 scl 2 11 gnd 1 * 7 nc 10 nc 8 gnd 2 * 9 * pin 1 and pin 7 are internally connected. connecting both to gnd 1 is recommended. pin 9 and pin 16 are internally connected. connecting both to gnd 2 is recommended. figure 5. pin configuration table 9. ADUM2250 pin function descriptions pin no. mnemonic description 1 gnd 1 ground 1. ground reference for isolator side 1. 2 nc no connect. 3 v dd1 supply voltage, 3.0 v to 5.5 v. 4 nc no connect. 5 sda 1 data input/output, side 1. 6 scl 1 clock input/output, side 1. 7 gnd 1 ground 1. ground reference for isolator side 1. 8 nc no connect. 9 gnd 2 ground 2. isolated ground reference for isolator side 2. 10 nc no connect. 11 scl 2 clock input/output, side 2. 12 sda 2 data input/output, side 2. 13 nc no connect. 14 v dd2 supply voltage, 3.0 v to 5.5 v. 15 nc no connect. 16 gnd 2 ground 2. isolated ground reference for isolator side 2. table 10. adum2251 pin function descriptions pin no. mnemonic description 1 gnd 1 ground 1. ground reference for isolator side 1. 2 nc no connect. 3 v dd1 supply voltage, 3.0 v to 5.5 v. 4 nc no connect. 5 sda 1 data input/output, side 1. 6 scl 1 clock input, side 1. 7 gnd 1 ground 1. ground reference for isolator side 1. 8 nc no connect. 9 gnd 2 ground 2. isolated ground reference for isolator side 2. 10 nc no connect. 11 scl 2 clock output, side 2. 12 sda 2 data input/output, side 2. 13 nc no connect. 14 v dd2 supply voltage, 3.0 v to 5.5 v. 15 nc no connect. 16 gnd 2 ground 2. isolated ground reference for isolator side 2.
ADUM2250/adum2251 rev. 0 | page 10 of 16 applications information functional description the ADUM2250/adum2251 interface on each side to i 2 c sig- nals. internally, the bidirectional i 2 c signals are split into two unidirectional channels communicating in opposite directions via dedicated i coupler isolation channels. one channel of each pair (the side 1 input of each i/o pin in figure 6 ) implements a special input buffer and output driver that can differentiate between externally generated inputs and its own output signals. it only transfers externally generated input signals to the corresponding side 2 data or clock pin. both the side 1 and the side 2 i 2 c pins are designed to interface to an i 2 c bus operating in the 3.0 v to 5.5 v range. a logic low on either side causes the corresponding i/o pin across the coupler to be pulled low enough to comply with the logic low threshold requirements of other i 2 c devices on the bus. bus contention and latch-up is avoided by guaranteeing that the input low threshold at sda 1 or scl 1 is at least 50 mv less than the output low signal at the same pin. this prevents an output logic low at side 1 being transmitted back to side 2 and pulling down the i 2 c bus by latching the state. because the side 2 logic levels/thresholds and drive capabilities comply fully with standard i 2 c values, multiple ADUM2250/ adum2251 devices connected to a bus by their side 2 pins can communicate with each other and with other devices having i 2 c compatibility as shown in figure 7 . note the distinction between i 2 c compatibility and i 2 c compliance. i 2 c compatibility refers to situations in which the logic levels or drive capability of a component do not necessarily meet the requirements of the i 2 c specification but still allow the com- ponent to communicate with an i 2 c-compliant device. i 2 c compliance refers to situations in which the logic levels and drive capability of a component fully meet the requirements of the i 2 c specification. because the side 1 pin has a modified output level/input thresh- old, side 1 of the ADUM2250/adum2251 can only communicate with devices fully compliant with the i 2 c standard. in other words, side 2 of the ADUM2250/adum2251 is i 2 c-compliant while side 1 is only i 2 c-compatible. the side 1 i/o pins must not be connected to other i 2 c buffers that implement a similar scheme of dual i/o threshold detection. this latch-up prevention scheme is implemented in several popular i 2 c level shifting and bus extension products currently available from analog devices and other manufac- turers. care should be taken to review the data sheet of potential i 2 c bus buffering products to ensure that only one buffer on a bus segment implements a dual threshold scheme. a bus segment is a portion of the i 2 c bus that is isolated from other portions of the bus by galvanic isolation, bus extenders, or level shifting buffers. table 11 shows how multiple ADUM2250/ adum2251 components can coexist on a bus as long as two side 1 buffers are not connected to the same bus segment. table 11. adum225x buffer compatibility side 1 side 2 side 1 no yes side 2 yes yes the output logic low levels are independent of the v dd1 and v dd2 voltages. the input logic low threshold at side 1 is also independent of v dd1 . however, the input logic low threshold at side 2 is designed to be at 0.3 v dd2 , consistent with i 2 c require- ments. the side 1 and side 2 i/o pins have open-collector outputs whose high levels are set via pull-up resistors to their respective supply voltages. decode encode encode decode decode encode encode decode gnd 1 nc v dd1 nc sda 1 scl 1 nc gnd 1 gnd 2 nc v dd2 nc sda 2 scl 2 nc gnd 2 06670-006 8 7 5 6 4 3 2 1 12 11 13 14 15 16 10 ADUM2250 symbol indicates a dual threshold input buffer. nc = no connect 9 figure 6. ADUM2250 block diagram v dd1 sda 1 sck 1 gnd 1 v dd2 sda 2 sck 2 gnd 2 8 7 5 6 4 3 2 1 9 12 11 13 14 15 16 10 ADUM2250 06670-007 cpu or secondary bus segment i 2 c bus figure 7. typical isolated i 2 c interface using ADUM2250
ADUM2250/adum2251 rev. 0 | page 11 of 16 startup both the v dd1 and v dd2 supplies have an under voltage lockout feature that prevents the signal channels from operating unless certain criteria is met. this feature is to avoid the possibility of input logic low signals from pulling down the i 2 c bus inadver- tently during power-up/power-down. criteria that must be met for the signal channels to be enabled are as follows: ? both supplies must be at least 2.5 v. ? at least 40 s must elapse after both supplies exceed the internal start-up threshold of 2.0 v. until both of these criteria are met for both supplies, the ADUM2250/adum2251 outputs are pulled high thereby ensuring a startup that avoids any disturbances on the bus. figure 8 and figure 9 illustrate the supply conditions for fast and slow input supply slew rates. supply valid minimum recommended operating supply, 3.0v minimum valid supply, 2.5v internal startup threshold, 2.0v 40s 06670-008 figure 8. start-up condition, supply slew rate < 12.5 v/ms supply valid minimum recommended operating supply, 3.0v minimum valid supply, 2.5v internal startup threshold, 2.0v 40s 06670-009 figure 9. start-up condition, supply slew rate > 12.5 v/ms magnetic field immunity the ADUM2250/adum2251 are extremely immune to external magnetic fields. the limitation on the magnetic field immunity of the ADUM2250/adum2251 is set by the condition in which induced voltage in the receiving coil of the transformer is suffi- ciently large to either falsely set or reset the decoder. the following analysis defines the conditions under which this may occur. the 3 v operating condition of the ADUM2250/adum2251 is examined because it represents the most susceptible mode of operation. the pulses at the transformer output have an amplitude greater than 1.0 v. the decoder has a sensing threshold at about 0.5 v, therefore establishing a 0.5 v margin in which induced voltages can be tolerated. the voltage induced across the receiving coil is given by = ?= nnrdtdv n ...,2,1;)/( 2 where: is the magnetic flux density (gauss). r n is the radius of the nth turn in the receiving coil (cm). n is the number of turns in the receiving coil. given the geometry of the receiving coil in the ADUM2250/ adum2251 and an imposed requirement that the induced voltage be at most 50% of the 0.5 v margin at the decoder, a maximum allowable magnetic field is calculated, as shown in figure 10 . magnetic field frequency (hz) 100 0.001 1m 10 0.01 1k 10k 10m 0.1 1 100m 100k 06670-010 maximum allowable magnetic flux density (kgauss) figure 10. maximum allowable external magnetic flux density for example, at a magnetic field frequency of 1 mhz, the maximum allowable magnetic field of 0.2 kgauss induces a voltage of 0.25 v at the receiving coil. this is about 50% of the sensing threshold and does not cause a faulty output transition. similarly, if such an event were to occur during a transmitted pulse (and had the worst-case polarity), it would reduce the received pulse from >1.0 v to 0.75 v (still well above the 0.5 v sensing threshold of the decoder).
ADUM2250/adum2251 rev. 0 | page 12 of 16 the preceding magnetic flux density values correspond to specific current magnitudes at given distances away from the ADUM2250/adum2251 transformers. figure 11 expresses these allowable current magnitudes as a function of frequency for selected distances. as seen, the ADUM2250/adum2251 is extremely immune and can be affected only by extremely large currents operated at high frequency and very close to the com- ponent. for the 1 mhz example, place a 0.5 ka current 5 mm away from the ADUM2250/adum2251 to affect the operation of the component. note that at combinations of strong magnetic fields and high frequencies, any loops formed by printed circuit board traces could induce sufficiently large error voltages to trigger the threshold of succeeding circuitry. care should be taken in the layout of such traces to avoid this possibility. magnetic field frequency (hz) maximum allowable current (ka) 1000 100 10 1 0.1 0.01 1k 10k 100m 100k 1m 10m distance = 5mm distance = 1m distance = 100mm 06670-011 figure 11. maximum allowable current for various current-to-ADUM2250/adum2251 spacings
ADUM2250/adum2251 rev. 0 | page 13 of 16 outline dimensions 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-013- aa 030707-b 10.50 (0.4134) 10.10 (0.3976) 0.30 (0.0118) 0.10 (0.0039) 2.65 (0.1043) 2.35 (0.0925) 10.65 (0.4193) 10.00 (0.3937) 7.60 (0.2992) 7.40 (0.2913) 0 . 7 5 ( 0 . 0 2 9 5 ) 0 . 2 5 ( 0 . 0 0 9 8 ) 45 1.27 (0.0500) 0.40 (0.0157) c oplanarity 0.10 0.33 (0.0130) 0.20 (0.0079) 0.51 (0.0201) 0.31 (0.0122) seating plane 8 0 16 9 8 1 1.27 (0.0500) bsc figure 12. 16-lead standard small outline package [soic_w] wide body (rw-16) dimensions shown in millimeters (inches) ordering guide model number of inputs, v dd1 side number of inputs, v dd2 side maximum data rate (mbps) temperature range package description package option ADUM2250arwz 1 2 2 1 ?40c to +105c 16-lead soic_w rw-16 ADUM2250arwz-rl 1 2 2 1 ?40c to +105c 16-lead soic_w, 13 reel rw-16 adum2251arwz 1 2 1 1 ?40c to +105c 16-lead soic_w rw-16 adum2251arwz-rl 1 2 1 1 ?40c to +105c 16-lead soic_w, 13 reel rw-16 1 z = rohs compliant part.
ADUM2250/adum2251 rev. 0 | page 14 of 16 notes
ADUM2250/adum2251 rev. 0 | page 15 of 16 notes
ADUM2250/adum2251 rev. 0 | page 16 of 16 notes ?2007 analog devices, inc. all rights reserved. trademarks and registered trademarks are the property of their respective owners. d06670-0-4/07(0)

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