1 of 9 functional block diagram rf micro devices?, rfmd?, optimum technology matching?, enabling wireless connectivity?, powerstar?, polaris? total radio? and ultimateblue? are trademarks of rfmd, llc. bluetooth is a trade- mark owned by bluetooth sig, inc., u.s.a. and licensed for use by rfmd. all other trade names, trademarks and registered tradem arks are the property of their respective owners. ?2012, rf micro devices, inc. product description 7628 thorndike road, greensboro, nc 21127409-9421 for sales or techni- cal support, contact rfmd at ( ( + 1 ) 3 3 6 - 6 7 8 - 5 5 7 0 or c c u s t o m e r s e r - ordering information 1 2 3 4 5 6 18 17 16 15 14 13 7 8 9 10 11 12 24 23 22 21 20 19 7 bit dsa logic circuit c0.25 vdd n/c rf1 n/c n/c n/c n/c n/c rf2 n/c n/c acg1 acg2 acg3 acg4 acg5 n/c c0.5 c1 c2 c4 c8 c16 RFSA2714 parallel controlled digital step attenuator, 50mhz to 4000mhz rfmd's RFSA2714 is a 7-bit digital step attenuator (dsa) that features high linearity over the entire 31.75db gain control range with excellent step accuracy in 0.25db steps. the parallel-controlled RFSA2714 has an on-chip decoder that is both 3v and 5v compatible. the RFSA2714 also offers a rugged class 1b hbm esd rating via on-chip esd circuitry. features frequency range 50mhz to 4000mhz 7-bit, 31.75db range, 0.25db step high linearity, ip3 >50dbm 3v and 5v logic compatible on-chip parallel decoder parallel programming interface on-chip esd protection >500v hbm single supply, 3v to 5v operation applications transceiver if applications cellular, pcs, gsm, umts, lte, wimax/wifi wireless data, satellite terminals test equipment ds130211 package: qfn, 24-pin, 4.2mm x 4.2mm RFSA2714par- allel controlled digital step attenuator, 50mhz to 4000mhz RFSA2714sr 7 sample reel with 100 pieces RFSA2714sq sample bag with 25 pieces RFSA2714tr13 13 reel with 2500 pieces RFSA2714pck-410 50mhz to 4ghz pcba with 5-piece sample bag
2 of 9 RFSA2714 ds130211 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at ( ( + 1 ) 3 3 6 - 6 7 8 - 5 5 7 0 or c c u s t o m e r s e r v i c e @ r f m d . c o m . absolute maximum ratings parameter rating unit supply voltage +5.5 v dc supply current 15 ma power dissipation 83 mw max rf input power 27 dbm operating temperature (t case ) -40 to +85 c storage temperature -40 to +150 c junction temperature 150 c esd rating (hbm) class 1b moisture sensitivity level msl1 parameter specification unit condition min. typ. max. frequency range 50 4000 mhz insertion loss 0.85 db 150mhz, 0db attenuation 1.1 db 850mhz, 0db attenuation 1.7 db 2700mhz, 0db attenuation 2.1 db 3800mhz, 0db attenuation gain control range 31.75 db 0.25db step size step accuracy (0.1 + 5% attenuation setting) db input ip3 50 dbm 100mhz to 4000mhz input p0.1db 25 dbm 1000mhz return loss 15 db dc to 3000mhz, all states control interface 7-bit, parallel parallel interface settling time 200 ns t rise , t fall (10%/90% rf) switching speed 200 ns t on , t off (50% ctl to 10%/90% rf) supply voltage (v dd ) 4.75 5.0 5.25 v supply current 7.5 ma control voltage (v ctl ) low, v ctl = 0 to 0.8 high, v ctl = 2.0 to v dd v notes: 1. v dd = 5v, v ctl = 5v, t = 25c. 2. broadband application circuit (with acg caps). 3. iip3 measured with p in = +10dbm/tone, 1mhz spacing. c a u t i o n ! esd sensitive device. exceeding any one or a combination of the absolute maximum rating conditions may cause permanent damage to the device. extended application of absolute maximum rating conditions to the device may reduce device reliability. specified typical perfor- mance or functional operation of the device under absolute maximum rating condi- tions is not implied. the information in this publication is believed to be accurate and reliable. however, no responsibility is assumed by rf micro devices, inc. ("rfmd") for its use, nor for any infringement of patents, or other rights of third parties, resulting from its use. no license is granted by implication or otherwise under any patent or patent rights of rfmd. rfmd reserves the right to change component circuitry, recommended appli- cation circuitry and specifications at any time without prior notice.
3 of 9 RFSA2714 ds130211 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at ( ( + 1 ) 3 3 6 - 6 7 8 - 5 5 7 0 or c c u s t o m e r s e r v i c e @ r f m d . c o m . typical performance: broadband application circuit (25c)
4 of 9 RFSA2714 ds130211 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at ( ( + 1 ) 3 3 6 - 6 7 8 - 5 5 7 0 or c c u s t o m e r s e r v i c e @ r f m d . c o m . typical performance: broadband application circuit (25c)
5 of 9 RFSA2714 ds130211 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at ( ( + 1 ) 3 3 6 - 6 7 8 - 5 5 7 0 or c c u s t o m e r s e r v i c e @ r f m d . c o m . truth table c o n t r o l b i t r e l a t i v e g a i n s e t t i n g c 1 6 c 8 c 4 c 2 c 1 c 0 . 5 c 0 . 2 5 1111111max gain 1111110 -0.25db 1111101 -0.5db 1111011 -1db 1110111 -2db 1101111 -4db 1011111 -8db 0111111 -16db 0000000-31.75db note: c0.25 = d0, c0.5 = d1, , c16 = d6 (for the purpose of the example below) l o g i c v o l t a g e l e v e l s s t a t e l o g i c low 0v to 0.8v high 2.0v to 5.0v
6 of 9 RFSA2714 ds130211 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at ( ( + 1 ) 3 3 6 - 6 7 8 - 5 5 7 0 or c c u s t o m e r s e r v i c e @ r f m d . c o m . pin names and description pin name description 1 c0.25 0.25db control bit. 2vdd power supply. 3nc no internal connection. evb can be ground or no connect. 4rf1 rf port. external dc block required. 5nc no internal connection. evb can be ground or no connect. 6nc no internal connection. evb can be ground or no connect. 7acg ac ground connection for operation below 500mhz. 8acg ac ground connection for operation below 500mhz. 9acg ac ground connection for operation below 500mhz. 10 acg ac ground connection for operation below 500mhz. 11 acg ac ground connection for operation below 500mhz. 12 nc no internal connection. evb can be ground or no connect. 13 nc no internal connection. evb can be ground or no connect. 14 nc no internal connection. evb can be ground or no connect. 15 rf2 rf port. external dc block required. 16 nc no internal connection. evb can be ground or no connect. 17 nc no internal connection. evb can be ground or no connect. 18 nc no internal connection. evb can be ground or no connect. 19 c16 16db control bit. 20 c8 8db control bit. 21 c4 4db control bit. 22 c2 2db control bit. 23 c1 1db control bit. 24 c0.5 0.5db control bit. epad gnd dc and rf ground. must be soldered to evb ground plane over a bed of vias for thermal and rf performance.
7 of 9 RFSA2714 ds130211 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at ( ( + 1 ) 3 3 6 - 6 7 8 - 5 5 7 0 or c c u s t o m e r s e r v i c e @ r f m d . c o m . evaluation board assembly drawing board edge trace width should be 17.25mils board edge trace width should be 17.25mils board edge trace width should be 17.25mils trace width should be 17.25mils board edge c025 sa2714410(a) vdd gnd c05/data c1 c2/le c4/clk c8/pup c16 c025 c4/clk c1 c05/data gnd c8/pup c16 c2/le j1 rf1 j100 j99 c20 c19 r8 c11 j2 rf2 c1 c2 c3 c4 c5 c6 c7 c9 c12 c13 c14 c15 c16 u1 c17 c18 r1 r2 r3 r4 r5 r6 r7 c8 p2 p1
8 of 9 RFSA2714 ds130211 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at ( ( + 1 ) 3 3 6 - 6 7 8 - 5 5 7 0 or c c u s t o m e r s e r v i c e @ r f m d . c o m . evaluation board schematic evaluation board bill of materials (bom) description reference designator manufacturer manufacturers p/n sa2714410(a) dynamic details (ddi) toronto sa2714410(a) digital step attenuator 50mhz to 4000mhz u1 rfmd RFSA2714sb cap, 1000pf, 10%, 50v, x7r, 0402 c7 taiyo yuden (usa), inc. rm umk105bj102kv-f cap, 470pf, 10%, 50v, x7r, 0402 c11-c12 murata electronics grm155r71h471ka01e cap, 680pf, 5%, 50v, c0g, 0402 c14, c15, c16 murata electronics grm1555c1h681ja01d res, 0, 0402 r1-r8 kamaya, inc rmc1/16sjpth conn, sma, end lnch, univ, hyb mnt, flt j1-j2, j99-j100 molex sd-73251-4000 conn, hdr, st, plrzd, 9-pin p1 itw pancon mpss100-9-c conn, skt, 24-pin dip, .600", t/h p2 aries electronics inc. 24-6518-10 mod, usb to serial uart, ssop-28 m1 (see note below) future technology devices int'l um232r dnp c1-c6, c8-c9, c13, c17-c20 na na note: m1 should be mounted into p2 with respect to the pin 1 alignment of m1 and p2 c0.25 1 vdd 2 gnd/nc 3 rf1 4 gnd/nc 5 nc 6 gnd/nc 7 gnd/nc 8 gnd/nc 9 gnd/nc 10 gnd/nc 11 gnd/nc 12 nc 13 gnd/nc 14 rf2 15 gnd/nc 16 gnd/nc 17 gnd/nc 18 c16 19 c8 20 c4 21 c2 22 c1 23 c0.5 24 u1 c7 c6 c5 c4 c3 c2 c1 gnd gnd gnd gnd gnd gnd gnd c05/data c05/data c1 c1 c2/le c2/le c4/clk c4/clk c8/pup c8/pup c16 c16 vdd vdd gnd c13 gnd c15 gnd c16 gnd c14 gnd gnd gnd gnd gnd gnd c11 c12 gnd gnd gnd gnd c17 gnd c18 gnd c19 c20 c025 c9 gnd c025 r3 r2 r1 r4 r6 r7 r5 1 2 3 4 5 6 7 8 9 p1 con9 r8 c8 gnd 1 2 j1 rf1 1 2 j2 rf2 1 2 j99 sma 1 2 j100 sma cb2 12 txd 1 dtr# 2 rts# 3 vio 4 rxd 5 ri# 6 gnd 7 dsr# 8 dcd# 9 cts# 10 cb4 11 gnd 24 sld 13 usb 14 vcc 15 pu2 16 pu1 17 cb3 18 3v3 19 rst 20 vcc 21 cb1 22 cb0 23 p2 um232r c025 c4/clk c1 c05/data gnd c8/pup c16 c2/le
9 of 9 RFSA2714 ds130211 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at ( ( + 1 ) 3 3 6 - 6 7 8 - 5 5 7 0 or c c u s t o m e r s e r v i c e @ r f m d . c o m . branding drawing package drawing sa2714 yyww trace pin 1 indicator fill in the yyww notation with the date code yy = year ww = week trace to be assigned by subcon 4.000 4.000 4.000 4.000
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