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wideband, 40 db isol ation at 1 ghz, cmos 1.65 v to 2.75 v, spst switches adg901/adg902 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 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 ? 2005 analog devices, inc. all rights reserved. features wideband switch: ?3 db @ 4.5 ghz adg901absorptive switch adg902reflective switch high off isolation: 40 db @ 1 ghz low insertion loss: 0.8 db @1 ghz single 1.65 v to 2.75 v power supply cmos/lvttl control logic 8-lead msop and tiny 3 mm 3 mm lfcsp packages low power consumption (<1 a) applications wireless communications general purpose rf switching dual-band applications high speed filter selection digital transceiver front end switch if switching tuner modules antenna diversity switching list functional block diagram adg901 rf2 rf1 ctrl 50 50 adg902 rf2 rf1 ctrl 03336-001 figure 1. general description the adg901/adg902 are wideband switches that use a cmos process to provide high isolation and low insertion loss to 1 ghz. the adg901 is an absorptive (matched) switch with 50 terminated shunt legs, while the adg902 is a reflective switch. these devices are designed such that the isolation is high over the dc to 1 ghz frequency range. they have on-board cmos control logic, thus eliminating the need for external controlling circuitry. the control inputs are both cmos and lvttl compatible. the low power consumption of these cmos devices makes them ideally suited to wireless applications and general-purpose high frequency switching. product highlights 1. ?40 db off isolation @ 1 ghz 2. 0.8 db insertion loss @ 1 ghz 3. tiny 8-lead msop/lfcsp packages 0 ?100 ?90 ?80 ?70 ?60 ?50 ?40 ?30 ?20 ?10 10k 100k 100m 1m 10m 1g 10g 03336-002 frequency (hz) isolation (db) v dd = 2.5v v dd = 1.8v t a = 25 c figure 2. off isol ation vs. frequency ?3.0 ?2.8 ?2.2 ?1.6 ?1.2 ?3.0 ?2.6 ?2.4 ?2.0 ?1.8 ?1.4 ?1.0 ?0.8 10k 100k 100m 1m 10m 1g 10g 03336-003 frequency (hz) insertion loss (db) ?0.6 ?0.4 v dd = 2.5v t a = 25 c figure 3. insertion loss vs. frequency
important links for the adg901_902 * last content update 08/17/2013 12:41 am parametric selection tables choosing the correct switch or multiplexer for your application switches and multiplexers product selection guide documentation an-952: adg9xx wideband cmos switches: frequently asked questions use circuits from the lab? in your next design cmos switches offer high performance in low power, wideband applications enhanced multiplexing for mems optical cross connects rf source booklet evaluation kits & symbols & footprints view the evaluation boards and kits page for the adg901 view the evaluation boards and kits page for the adg902 symbols and footprints for the adg901 symbols and footprints for the adg902 design collaboration community collaborate online with the adi support team and other designers about select adi products. follow us on twitter: www.twitter.com/adi_news like us on facebook: www.facebook.com/analogdevicesinc design support submit your support request here: linear and data converters embedded processing and dsp telephone our customer interaction centers toll free: americas: 1-800-262-5643 europe: 00800-266-822-82 china: 4006-100-006 india: 1800-419-0108 russia: 8-800-555-45-90 quality and reliability lead(pb)-free data sample & buy adg901 adg902 view price & packaging request evaluation board request samples check inventory & purchase find local distributors * this page was dynamically generated by analog devices, inc. and inserted into this data sheet. note: dynamic changes to the content on this page (labeled 'important links') does not constitute a change to the revision number of the product data sheet. this content may be frequently modified. powered by tcpdf (www.tcpdf.org)
adg901/adg902 rev. b | page 2 of 16 table of contents features .............................................................................................. 1 applications ....................................................................................... 1 functional block diagram .............................................................. 1 general description ......................................................................... 1 product highlights ........................................................................... 1 revision history ............................................................................... 2 specifications ..................................................................................... 3 absolute maximum ratings ............................................................ 4 esd caution .................................................................................. 4 pin configuration and function descriptions ..............................5 typical performance characteristics ..............................................6 ter mi nolo g y .......................................................................................8 test circ u its ........................................................................................9 applications ..................................................................................... 10 absorptive vs. reflective switches ........................................... 10 adg90x evaluation board ........................................................... 11 outline dimensions ....................................................................... 12 ordering guide ............................................................................... 13 revision history 10/05rev. a to rev. b changes to figure 1..........................................................................1 changes to table 1............................................................................3 changes to ordering guide ..........................................................12 10/04rev. 0 to rev. a. changes to features ......................................................................... 1 changes to product highlights ...................................................... 1 changes to specifications ................................................................ 2 changes to ordering guide ............................................................ 3 change to adg9xx evaluation board section............................. 9 changes to ordering guide .......................................................... 10 8/03revision 0: initial version
adg901/adg902 rev. b | page 3 of 16 specifications v dd = 1.65 v to 2.75 v, gnd = 0 v, input power = 0 dbm, all specifications t min to t max , unless otherwise specified. 1 table 1. b version parameter symbol conditions min typ 2 max unit ac electrical characteristics operating frequency 3 dc 2.5 ghz ?3 db frequency 4 4.5 ghz input power 4 0 v dc bias 7 dbm 0.5 v dc bias 16 dbm insertion loss s 21 , s 12 dc to 100 mhz; v dd = 2.5 v 10% 0.4 0.7 db 500 mhz; v dd = 2.5 v 10% 0.5 0.8 db 1000 mhz; v dd = 2.5 v 10% 0.8 1.25 db isolationrf1 to rf2 s 21 , s 12 100 mhz 60 61 db cp package 500 mhz 43 45 db 1000 mhz 34 40 db isolationrf1 to rf2 s 21 , s 12 100 mhz 51 60 db rm package 500 mhz 37.5 47 db 1000 mhz 31 37 db return loss (on channel) 4 s 11 , s 22 dc to 100 mhz 20 28 db 500 mhz 23 29 db 1000 mhz 25 28 db return loss (off channel) 4 s 11 , s 22 dc to 100 mhz 18 23 db 500 mhz 17 21 db 1000 mhz 15 19 db on switching time 4 t on 50% ctrl to 90% rf 3.6 6 ns off switching time 4 t off 50% ctrl to 10% rf 5.8 9.5 ns rise time 4 t rise 10% to 90% rf 3.1 5.5 ns fall time 4 t fall 90% to 10% rf 6.0 8.5 ns 1 db compression 4 p ?1 db b 1000 mhz 17 dbm third-order intermodulation intercept ip3 900 mhz/901 mhz, 4 dbm 28.5 36 dbm video feedthrough 5 2.5 mv p-p dc electrical characteristics input high voltage v inh v dd = 2.25 v to 2.75 v 1.7 v v inh v dd = 1.65 v to 1.95 v 0.65 v dd v input low voltage v inl v dd = 2.25 v to 2.75 v 0.7 v v inl v dd = 1.65 v to 1.95 v 0.35 v dd v input leakage current i i 0 v in 2.75 v 0.1 1 a capacitance 4 rf1/rf2, rf port on capacitance c rf on f = 1 mhz 1.2 pf ctrl input capacitance c ctrl f = 1 mhz 2.1 pf power requirements v dd 1.65 2.75 v quiescent power supply current i dd digital inputs = 0 v or v dd 0.1 1 a 1 temperature range for b version: ?40c to +85c. 2 typical values are at v dd = 2.5 v and 25c, unless otherwise specified. 3 point at which insertion loss degrades by 1 db. 4 guaranteed by design, not subject to production test. 5 the dc transience at the output of any port of the switch when the control voltage is switched from high to low or low to high in a 50 test setu p, measured with 1 ns rise time pulses an d 500 mhz bandwidth.
adg901/adg902 rev. b | page 4 of 16 absolute maximum ratings t a = 25c, unless otherwise specified. table 2. parameter rating v dd to gnd ?0.5 v to +4 v inputs to gnd ?0.5 v to v dd + 0.3 v 1 continuous current 30 ma input power 18 dbm operating temperature range industrial (b version) ?40 c to +85 c storage temperature range ?65 c to +150 c junction temperature 150 c msop package ja thermal impedance 206 c/w lfcsp package ja thermal impedance (2-layer board) 84 c/w ja thermal impedance (4-layer board) 48 c/w lead temperature, soldering (10 sec) 300 c ir reflow, peak temperature (<20 sec) 235 c esd 1 kv 1 rf1/rf2 off port inputs to ground: ?0.5 v to v dd C 0.5 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 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 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.
adg901/adg902 rev. b | page 5 of 16 pin configuration and fu nction descriptions 03336-004 adg901/ adg902 top view (not to scale) v dd 1 ctrl 2 gnd 3 rf1 4 rf2 8 gnd 7 gnd 6 gnd 5 figure 4. 8-lead msop (rm-8) and 8-lead 3 mm 3 mm lfcsp (cp-8 C exposed pad tied to substrate, gnd table 3. pin function descriptions pin no. mnemonic description 1 v dd power supply input. these parts can be operated from 1.65 v to 2.75 v; v dd should be decoupled to gnd. 2 ctrl cmos or lvttl logic level. ctrl input should not exceed v dd. 0 rf1 isolated from rf2. 1 rf1 to rf2. 3, 5, 6, 7 gnd ground reference point for all circuitry on the part. 4 rf1 rf1 port. 8 rf2 rf2 port. table 4. truth table ctrl signal path 0 rf1 isolated from rf2 1 rf1 to rf2
adg901/adg902 rev. b | page 6 of 16 typical performance characteristics ?0.4 ?3.0 ?2.2 ?2.0 ?1.8 ?1.6 ?1.4 ?2.8 ?2.6 ?2.4 ?1.2 ?1.0 ?0.8 ?0.6 10k 100k 100m 1m 10m 1g 10g 03336-005 frequency (hz) insertion loss (db) t a = 25 c v dd = 2.5v v dd = 2.75v v dd = 2.25v figure 5. insertion loss vs. frequency over supplies (s12 and s21) ?0.40 ?1.00 ?0.85 ?0.80 ?0.75 ?0.70 ?0.65 ?0.95 ?0.90 ?0.60 ?0.55 ?0.50 ?0.45 10k 100k 100m 1m 10m 1g 10g 03336-006 frequency (hz) insertion loss (db) v dd = 2.75v v dd = 2.25v v dd = 2.5v t a = 25 c figure 6. insertion loss vs. frequency over supplies (s12 and s21) (zoomed figure 5 plot) ?0.4 ?3.0 ?2.2 ?2.0 ?1.8 ?1.6 ?1.4 ?2.8 ?2.6 ?2.4 ?1.2 ?1.0 ?0.8 ?0.6 10k 100k 100m 1m 10m 1g 10g 03336-007 frequency (hz) insertion loss (db) v dd = 1.8v v dd = 1.95v v dd = 1.65v t a = 25 c figure 7. insertion loss vs. frequency over supplies (s12 and s21) ?0.4 ?3.0 ?2.2 ?2.0 ?1.8 ?1.6 ?1.4 ?2.8 ?2.6 ?2.4 ?1.2 ?1.0 ?0.8 ?0.6 10k 100k 100m 1m 10m 1g 10g 03336-008 frequency (hz) insertion loss (db) +25 c +85 c ?40 c v dd = 2.5v figure 8. insertion loss vs. frequency over temperature (s12 and s21) 0 ?100 ?90 ?80 ?70 ?60 ?50 ?40 ?30 ?20 ?10 ?95 ?85 ?75 ?65 ?55 ?45 ?35 ?25 ?15 ?5 10k 100k 100m 1m 10m 1g 10g 03336-009 frequency (hz) isolation (db) v dd = 2.5v v dd = 1.8v t a = 25 c figure 9. off isolation vs. freque ncy over supplies (s12 and s21) 0 ?90 ?80 ?70 ?60 ?50 ?40 ?30 ?20 ?10 ?85 ?75 ?65 ?55 ?45 ?35 ?25 ?15 ?5 10k 100k 100m 1m 10m 1g 10g 03336-010 frequency (hz) isolation (db) +85 c +25 c ?40 c v dd = 2.5v figure 10. off isolation vs. frequency over temperature (s12 and s21)
adg901/adg902 rev. b | page 7 of 16 0 ?35 ?30 ?20 ?10 ?25 ?15 ?5 10k 100k 100m 1m 10m 1g 10g 03336-011 frequency (hz) return loss (db) t a = 25c v dd = 2.5v on switch off switch figure 11. return loss vs. frequency (s11) 03336-012 ch1 = ctrl = 1v/div ch2 = rfx = 100mv/div t rise = 2.8ns t fall = 5.1ns ch2 ch1 figure 12. switch timing 03336-013 ch1 500mv ch2 1mv 10.0ns 1 2 ctrl rfx ch2 pk-pk 2.016mv figure 13. video feedthrough 40 0 5 10 15 20 25 30 35 250 350 450 550 650 750 850 03336-014 frequency (mhz) ip 3 (dbm) v dd = 2.5v t a = 25 c figure 14. ip 3 vs. frequency 20 0 2 4 6 8 10 12 14 16 18 0 250 500 750 1000 1250 1500 03336-015 frequency (mhz) p ?1db (dbm) v dd = 2.5v t a = 25 c figure 15. p ?1db vs. frequency
adg901/adg902 rev. b | page 8 of 16 terminology v dd most positive power supply potential. i dd positive supply current. gnd ground (0 v) reference. ctrl logic control input. v inl maximum input voltage for logic 0. v inh minimum input voltage for logic 1. i in l (i inh ) input current of the digital input. c in digital input capacitance. t on delay between applying the digital control input and the output switching on. t off delay between applying the digital control input and the output switching off. t rise rise time. time for the rf signal to rise from 10% to 90% of the on level. t fall fall time. time for the rf signal to fall from 90% to 10% of the on level. off isolation the attenuation between input and output ports of the switch when the switch control voltage is in the off condition. insertion loss the attenuation between input and output ports of the switch when the switch control voltage is in the on condition. p ?1 db 1 db compression point. the rf input power level at which the switch insertion loss increases by 1 db over its low level value. it is a measure of how much power the on switch can handle before the insertion loss increases by 1 db. ip 3 third-order intermodulation intercept. this is a measure of the power in false tones that occur when closely spaced tones are passed through a switch, whereby the nonlinearity of the switch causes these false tones to be generated. return loss the amount of reflected power relative to the incident power at a port. large return loss indicates good matching. by measuring return loss the vswr can be calculated from conversion charts. voltage standing wave ratio (vswr) indicates the degree of matching present at a switch rf port. video feedthrough the spurious signals present at the rf ports of the switch when the control voltage is switched from high to low or low to high without an rf signal present.
adg901/adg902 rev. b | page 9 of 16 test circuits similar setups for adg902. 03336-016 v dd v dd 0.1 f v s ctrl rf2 rf1 gnd r l 50 v out v ctrl 50% 50% v out t on t off 90% 10% figure 16. switching timing: t on , t off 03336-017 v dd v dd 0.1 f v s ctrl rf2 rf1 gnd r l 50 v out v ctrl 50% 50% v out t rise t fall 90% 10% 90% 10% figure 17. switch timing: t rise , t fall 03336-018 out v s v v s 50 network analyzer v out r l 50 0.1 f v ctrl gnd rf2 ctrl adg901 rf1 50 50 v dd v dd off isolation = 20 log figure 18. off isolation 03336-019 v s 50 network analyzer v out r l 50 0.1 f v dd v ctrl gnd rf2 ctrl adg901 rf1 50 50 v dd insertion loss = 20 log v out v s figure 19. insertion loss 03336-020 oscilloscope 0.1 f v dd v ctrl nc rf2 ctrl rf1 gnd adg901 50 50 v dd figure 20. video feedthrough 03336-021 combiner rf source rf source spectrum analyzer 0.1 f v dd v ctrl gnd rf2 ctrl adg901 rf1 50 50 v dd figure 21. ip 3 03336-022 rf source spectrum analyzer 0.1 f gnd rf2 ctrl adg901 rf1 50 50 v dd v ctrl v dd v s figure 22. p C1 db
adg901/adg902 rev. b | page 10 of 16 applications the adg901/adg902 are ideal solutions for low power, high frequency applications. the low insertion loss, high isolation between ports, low distortion, and low current consumption of these parts make them excellent solutions for many high frequency switching applications. applications include switching between high frequency filters, ask generators, and fsk generators. absorptive vs. reflective switches the adg901 is an absorptive (matched) switch with 50 terminated shunt legs and the adg902 is a reflective switch with 0 terminated shunts to ground. the adg901 absorptive switch has a good vswr on each port, regardless of the switch mode. an absorptive switch should be used when there is a need for a good vswr that is looking into the port but not passing the through signal to the common port. the adg901 is therefore ideal for applications that require minimum reflections back to the rf source. it also ensures that the maximum power is transferred to the load. the adg902 reflective switch is suitable for applications where high off port vswr does not matter and the switch has some other desired performance feature. it can be used in many applications, including high speed filter selection. in most cases, an absorptive switch can be used instead of a reflective switch, but not vice versa.
adg901/adg902 rev. b | page 11 of 16 adg90x evaluation board the adg90x evaluation board allows designers to evaluate the high performance wideband switches with a minimum of effort. to prove that these devices meet user requirements, the user requires only a power supply and a network analyzer along with the evaluation board. an application note is available with the evaluation board and provides complete information on operating the evaluation board. the rf1 port (see figure 23 ) is connected through a 50 transmission line to the top left sma connector j1. rf2 is connected through a 50 transmission line to the top sma connector j2. j3 is connected to gnd. a through transmission line connects j4 and j5 and this transmission line is used to estimate the loss of the pcb over the environmental conditions being evaluated. the board is constructed of a 4-layer, fr4 material with a dielectric constant of 4.3 and an overall thickness of 0.062 inches. two ground layers with grounded planes provide ground for the rf transmission lines. the trans- mission lines were designed using a coplanar waveguide with ground plane model using a trace width of 0.052 inches, clearance to ground plane of 0.030 inches, dielectric thickness of 0.029 inches, and a metal thickness of 0.014 inches. 03336-023 figure 23. adg90x evaluation board top view
adg901/adg902 rev. b | page 12 of 16 outline dimensions compliant to jedec standards mo-187-aa 0.80 0.60 0.40 8 0 4 8 1 5 pin 1 0.65 bsc seating plane 0.38 0.22 1.10 max 3.20 3.00 2.80 coplanarity 0.10 0.23 0.08 3.20 3.00 2.80 5.15 4.90 4.65 0.15 0.00 0.95 0.85 0.75 figure 24. 8-lead mini small outline package [msop] (rm-8) dimensions shown in millimeters 1 0.50 bsc 0.60 max pin 1 indicato r 1.50 ref 0.50 0.40 0.30 2.75 bsc sq top view 12 max 0.70 max 0.65 typ seating plane pin 1 indicator 0.90 max 0.85 nom 0.30 0.23 0.18 0.05 max 0.01 nom 0.20 ref 1.89 1.74 1.59 4 1.60 1.45 1.30 3.00 bsc sq 5 8 figure 25. 8-lead lead frame chip scale package [lfcsp] 3 mm 3 mm body (cp-8-2) dimensions shown in millimeters
adg901/adg902 rev. b | page 13 of 16 ordering guide model temperature range package desc ription package option branding adg901brm ?40c to +85c 8-lead mini small outline package [msop] rm-8 w6b adg901brm-500rl7 ?40c to +85c 8-lead mini small outline package [msop] rm-8 w6b adg901brm-reel7 ?40c to +85c 8-lead mi ni small outline package [msop] rm-8 w6b adg901brmz 1 ?40c to +85c 8-lead mini small outline package [msop] rm-8 s1t adg901brmz-reel7 1 ?40c to +85c 8-lead mini small outline package [msop] rm-8 s1t adg901bcp-500rl7 ?40c to +85c 8-lead lead frame chip scale package [lfcsp] cp-8-2 w6b adg901bcp-reel7 ?40c to +85c 8-lead lead frame chip scale package [lfcsp] cp-8-2 w6b adg901bcpz-reel7 ?40c to +85c 8-lead lead frame chip scale package [lfcsp] cp-8-2 s1t adg902brm ?40c to +85c 8-lead mini small outline package [msop] rm-8 w7b adg902brm-500rl7 ?40c to +85c 8-lead mini small outline package [msop] rm-8 w7b adg902brm-reel7 ?40c to +85c 8-lead lead frame chip scale package [lfcsp] rm-8 w7b adg902brmz 1 ?40c to +85c 8-lead mini small outline package [msop] rm-8 s1v adg902bcp-500rl7 ?40c to +85c 8-lead lead frame chip scale package [lfcsp] cp-8-2 w7b adg902bcp-reel7 ?40c to +85c 8-lead lead frame chip scale package [lfcsp] cp-8-2 w7b adg902bcp-reel7 ?40c to +85c 8-lead lead frame chip scale package [lfcsp] cp-8-2 s1v eval-adg901eb evaluation board eval-adg902eb evaluation board 1 z = pb-free part.
adg901/adg902 preliminary technical data rev. b | page 14 of 16 notes
adg901/adg902 rev. b | page 15 of 16 notes
adg901/adg902 preliminary technical data rev. b | page 16 of 16 notes ?2005 analog devices, inc. all rights reserved. trademarks and registered trademarks are the property of their respective owners. d03336C 0C10/05(b)

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