page 1 of 10 document no. doc-18314-2 www.psemi.com ?2008?2015 peregrine semiconductor corp. all rights reserved. rf1 rf2 v1 50 50 cmos control driver esd esd v2 rfc esd the pe4251 is a harp? technology-enhanced absorptive single pole double throw (spdt) rf switch for use in general switching applications and mobile infrastructure. this device offers a flexible supply voltage of 3.3/5v, single-pin or complementary pin control inputs and 4 kv esd tolerance. it presents a simple alternative solution to pin diode and mechanical relay switches. peregrine?s harp? technology enhancements deliver high linearity and exceptional performance. it is an innovative feature of the ultracmos ? process, providing performance superior to gaas with the economy and integration of conventional cmos. product specification ultracmos ? spdt rf switch 10?4000 mhz, absorptive product description figure 1. functional diagram pe4251 features ? harp? technology enhanced ? low insertion loss: 0.60 db @ 1000 mhz ? high isolation: 62 db @ 1000 mhz ? p1db typical: +30.5 dbm ? iip3 typical: +59 dbm ? fast switching time: 150 ns ? flexible supply voltage: 3.3v 10% or 5.0v 10% supply (see table 3 ) ? excellent esd protection: 4000v hbm ? no blocking capacitors required ? single pin or complementary control inputs figure 2. package type 8-lead msop with exposed paddle table 1. target electrical specifications temp = +25 c, v dd = 3.3v or 5.0v notes: 1. device linearity will begin to degrade below 10 mhz. 2. absolute maximum rating of p in = 27 dbm. parameter condition min typ max unit operation frequency 1 10 4000 mhz insertion loss (rf1/rf2) 10 mhz 0.55 0.60 db 1000 mhz 0.60 0.70 db 2000 mhz 0.75 0.85 db 3000 mhz 0.75 0.90 db isolation (rfc to rf1/rf2) 1000 mhz 61 62 db 2000 mhz 51 53 db 3000 mhz 4000 mhz 42 43 37 db db return loss 1000 mhz 26 db 2000 mhz 23 db 3000 mhz 4000 mhz 22 19 db db input 1db compression 2 50?4000 mhz 30.5 dbm input ip3 50?4000 mhz, +18 dbm per tone, 5 mhz spacing 59 dbm switching time 50% ctrl to 10/90% rf 150 300 ns 4000 mhz 1.0 db
product specification pe4251 page 2 of 10 ?2008?2015 peregrine semiconductor corp. all rights reserved. document no. doc-18314-2 ultracmos ? rfic solutions table 1a. target electrical specifications temp = +125 c, v dd = 3.3v or 5.0v note: * absolute maximum rating of p in = 22 dbm. parameter condition min typ max unit operation frequency 50 4000 mhz insertion loss (rf1/rf2) 50 mhz 0.65 db 1000 mhz 0.75 db 2000 mhz 0.90 db 3000 mhz 4000 mhz 1.05 1.2 db db isolation (rfc to rf1/rf2) 1000 mhz 62 db 2000 mhz 52 db 3000 mhz 4000 mhz 43 36 db db return loss 1000 mhz 24 db 2000 mhz 23 db 3000 mhz 4000 mhz 19 18 db db input 1db compression * 50?4000 mhz 30.5 dbm input ip3 50?4000 mhz, +18 dbm per tone, 5 mhz spacing 57 dbm switching time 50% ctrl to 10/90% rf 200 ns
product specification pe4251 ?2008?2015 peregrine semiconductor corp. all rights reserved. document no. doc-18314-2 www.psemi.com page 3 of 10 table 2. pin descriptions electrostatic discharge (esd) precautions when handling this ultracmos device, observe the same precautions that you would use with other esd-sensitive devices. although this device contains circuitry to protect it from damage due to esd, precautions should be taken to avoid exceeding the specified rating. latch-up immunity unlike conventional cmos devices, ultracmos devices are immune to latch-up. table 3. operating ranges note: * all rf pins must be dc blocked with an external series capacitor or held at 0 vdc. figure 3. pin configuration (top view) pin # pin name description 1 v2 this pin supports tw o interface options: single-pin control mode . a nominal 3-volt supply connection is required. complementary-pin control mode . a complementary cmos control signal to v1 is supplied to this pin. 2 v1 switch control input, cmos logic level. 3 rfc rf common port.* 4 n/c or gnd no connect or ground 5 rf1 rf1 port.* 6 gnd ground connection. traces should be physically short and connected to ground plane for best performance. 7 gnd ground connection. traces should be physically short and connected to ground plane for best performance. 8 rf2 rf2 port.* paddle gnd exposed ground paddle. ground for proper device operation exceeding absolute maximum ratings may cause permanent damage. operation should be restricted to the limits in the operating ranges table. operation between operating range maximum and absolute maximum for extended periods may reduce reliability. switching frequency the pe4251 has a maximum 25 khz switching rate. 4251 1 2 3 4 8 7 6 5 v2 v1 rfc n/c or gnd rf2 gnd gnd rf1 exposed ground paddle note: * customer must choose either 3.3v or 5.0v power supply range. table 4. absolute maximum ratings symbol parameter/condition min max unit v dd power supply voltage 3 5.5 v v i voltage on any control input ?0.3 5.5 v t st storage temperature range ?65 +150 c p in rf input power (50 ? ) 10 mhz?4 ghz, +85 c 50 mhz?4 ghz, +125 c 27 22 dbm dbm v esd esd voltage, hbm esd voltage, mm (machine model) 4000 250 v v note: 1. human body model (mil_std 883 method 3015). 2. machine model (jedec jesd22-a115). parameter min typ max unit v dd power supply voltage * 3.0 4.5 3.3 5.0 3.6 5.5 v v i dd power supply current v dd = v cntl = 3.3v v dd = v cntl = 5.0v 55 75 60 80 a a control voltage high 0.8 v dd v control voltage low 0.2 v dd v p in rf input power (50 ? ) 10 mhz?4 ghz, +85 c 50 mhz?4 ghz, +125 c 27 22 dbm dbm t op operating temperature range ?40 +25 +125 c t st storage temperature range ?65 +25 +150 c moisture sensitivity level the moisture sensitivity level rating for the pe4251 in the 8-lead msop package is msl1.
product specification pe4251 page 4 of 10 ?2008?2015 peregrine semiconductor corp. all rights reserved. document no. doc-18314-2 ultracmos ? rfic solutions control logic input the pe4251 is a versatile rf cmos switch that supports two operating control modes: single-pin control mode and complementary-pin control mode. single-pin control mode enables the switch to operate with a single control pin (pin 2) supporting a +3.3 or 5.0-volt cmos logic input, and requires a dedicated +3.3 or 5.0-volt power supply connection (pin 1). this mode of operation reduces the number of control lines required and simplifies the switch control interface typically derived from a cmos processor i/o port. complementary-pin control mode allows the switch to operate using complementary control pins v1 and v2 (pins 2 & 1), that can be directly driven by +3.3 or 5.0-volt cmos logic or a suitable processor i/o port. this enables the pe4251 to operate in positive control voltage mode within the pe4251 operating limits. control voltages signal path pin 1 (v2) = v dd pin 2 (v1) = high rfc to rf1 pin 1 (v2) = v dd pin 2 (v1) = low rfc to rf2 table 5. single-pin control logic truth table table 6. complementary-pin control logic truth table control voltages signal path pin 1 (v2 ) = low pin 2 (v1) = high rfc to rf1 pin 1 (v2) = high pin 2 (v1) = low rfc to rf2
product specification pe4251 ?2008?2015 peregrine semiconductor corp. all rights reserved. document no. doc-18314-2 www.psemi.com page 5 of 10 n otes: 4.3 er and 2.1mil cu th i ckn ess. 3 . a ll tra n sm i si on li n es a re: 33mil width, 10mil gaps, 28mil core dielectric to d a m a ge by electrosta ti c d i sch a rge ( esd ) 2. caution: 1. use 101-0337-02 pcb. con ta i n s pa rts a n d a ssem bli es suscepti ble or gnd r1 dni c2 100pf 1 2 j3 sm a sm 1 2 j4 sm a sm 1 2 j5 sm a sm 1 2 j2 sm a sm c1 100pf 1 2 j6 sm a sm 2 v1 1 v2 3 rfc 6 gnds1 7 gnds2 8 rf2 4 n/ c 5 rf1 u1 msop 1 1 3 3 5 5 7 7 2 2 4 4 6 6 8 8 10 10 9 9 j1 header 2 x 5 pin r2 0 ohm r3 0 ohm evaluation kit figure 4. evaluation board layouts figure 5. evaluation board schematic doc-02389 prt-53366 the spdt switch evaluation kit board was designed to ease customer evaluation of the pe4251 spdt switch. the rf common port is connected through a 50 ? transmission line to the bottom sma connector, j3. port 1 and port 2 are connected through 50 ? transmission lines to two sma connectors on either side of the board, j4 and j2. a through transmission line connects sma connectors j5 and j6. this transmission line can be used to estimate the loss of the pcb over the environmental conditions being evaluated. the board is constructed of a two metal layer fr4 material with a total thickness of 0.0322?. the bottom layer provides ground for the rf transmission lines. the transmission lines were designed using a coplanar waveguide with ground plane model using a trace width of 0.033?, trace gaps of 0.010?, dielectric thickness of 0.028?, copper thickness of 0.0021? and r of 4.3. j1 provides a means for controlling the dc inputs to the device. the second-to-bottom lower right pin (j1?3) is connected to the device v1 input. the second-to-top upper right pin (j1?7) is connected to the device v2 input. footprints for decoupling capacitors are provided on both v1 and v2 traces. it is the responsibility of the customer to determine proper supply decoupling for their design application. removing these components from the evaluation board has not been shown to degrade rf performance.
product specification pe4251 page 6 of 10 ?2008?2015 peregrine semiconductor corp. all rights reserved. document no. doc-18314-2 ultracmos ? rfic solutions figure 9. isolation: rfc?rf @ 3.3v figure 8. isolation: rfc?rf @ +25 c figure 6. insertion loss: rfc?rf @ +25 c figure 7. insertion loss: rfc?rf @ 3.3v -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 0 500 1000 1500 2000 2500 3000 3500 4000 isolation (db) frequency (mhz) 3.0 v 3.3 v 3.6 v 4.5 v 5.0 v 5.5 v -4 -3.5 -3 -2.5 -2 -1.5 -1 -0.5 0 0 500 1000 1500 2000 2500 3000 3500 4000 insertion loss (db) frequency (mhz) 3.0 v 3.3 v 3.6 v 4.5 v 5.0 v 5.5 v -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 0 500 1000 1500 2000 2500 3000 3500 4000 isolation (db) frequency (mhz) - 40c +25c +85c -4 -3.5 -3 -2.5 -2 -1.5 -1 -0.5 0 0 500 1000 1500 2000 2500 3000 3500 4000 insertion loss (db) frequency (mhz) - 40c +25c +85c
product specification pe4251 ?2008?2015 peregrine semiconductor corp. all rights reserved. document no. doc-18314-2 www.psemi.com page 7 of 10 figure 10. return loss at active port @ +25 c figure 11. return loss at active port @ 3.3v -50 -45 -40 -35 -30 -25 -20 -15 -10 -5 0 0 500 1000 1500 2000 2500 3000 3500 4000 return loss (db) frequency (mhz) - 40c +25c +85c -50 -45 -40 -35 -30 -25 -20 -15 -10 -5 0 0 500 1000 1500 2000 2500 3000 3500 4000 return loss (db) frequency (mhz) 3.0 v 3.3 v 3.6 v 4.5 v 5.0 v 5.5 v
product specification pe4251 page 8 of 10 ?2008?2015 peregrine semiconductor corp. all rights reserved. document no. doc-18314-2 ultracmos ? rfic solutions figure 12. package drawing 8-lead msop doc-01889 top view side view recommended land pattern a 0.10 c (2x) c 0.10 c 0.05 c seating plane b 0.10 c (2x) 0.10 c a b all features pin #1 corner 3.00 1.95 3.00 4.90 0.860.05 0.100.05 0.65 0. 300.05 (x8) (x8) 4.20 5.50 1.30 0.65 (x8) bottom view 1.700.05 2.36 1. 700. 05 1.75 1.75 0.35 (x8) 1 8 4 5 front view 0.150.05 (x8) 0.550.10 (x8)
product specification pe4251 ?2008?2015 peregrine semiconductor corp. all rights reserved. document no. doc-18314-2 www.psemi.com page 9 of 10 figure 14. tape and reel specifications 8-lead msop with exposed paddle pin1 figure 13. top marking specification 4251 llll yww aaaa: product number, last 4 digits, exp. llll: last four digits of the assembly lot number yww: date code, last digit of the year and work week
product specification pe4251 page 10 of 10 ?2008?2015 peregrine semiconductor corp. all rights reserved. document no. doc-18314-2 ultracmos ? rfic solutions advance information : the product is in a formative or design stage. the datasheet contains design target specifications for product development. specifications and features may change in any manner without notice. preliminary specification: the datasheet contains preliminary data. additional data may be added at a later date. peregrine reserves the right to change specifications at any time without notice in order to supply the best possible product. product specification: the datasheet contains final data. in the event peregrine decides to change the specifications, peregrine will notify customer s of the intended changes by issuing a cnf (customer notification form). the information in this datasheet is believed to be reliable. however, peregrine assumes no liability for the use of this information. use shall be entirely at the user?s own risk. no patent rights or licenses to any circuits described in this datasheet are implied or granted to any third party. peregrine?s products are not designed or intended for use in devices or systems intended for surgical implant, or in other applications intended to support or sustain life, or in any application in which the failure of the peregrine product could create a situation in which personal injury or death might occur. peregrine assumes no liability for damages, including consequential or incidental damages, arising out of the use of its products in such applications. the peregrine name, logo, ultracmos and utsi are registered trademarks and harp, multiswitch and dune are trademarks of peregrine semiconductor corp. peregr ine products are protected under one or more of the following u.s. patents: http://patents.psemi.com sales contact and information for sales and contact information please visit www.psemi.com . table 7. ordering information order code description package shipping method ek4251-01 pe4251 evaluation ki t evaluation kit 1 / box PE4251MLI-Z pe4251 spdt rf switch green 8-lead msop, exposed pa ddle 3000 units / t&r
|
