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1 of 13 optimum technology matching ? applied gaas hbt ingap hbt gaas mesfet sige bicmos si bicmos sige hbt gaas phemt si cmos si bjt gan hemt 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 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or customerservice@rfmd.com . ordering information bifet hbt ? 24 spi rf1 gnd vdd gnd rf2 gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd gnd nc pup clk le nc data 5-bit dsa gnd 23 22 21 20 19 7 8 9 10 11 12 18 17 16 15 14 13 1 2 3 4 5 6 rfsa2514 serial controlled digital step attenuator 50mhz to 4000mhz, 5-bit, 0.5db lsb rfmd's rfsa2514 is a 5-bit digital step attenuator (dsa) that features high linear- ity over the entire 15.5db gain control ra nge with excellent step accuracy in 0.5db steps. the rfsa2514 is programmed via a serial mode control interface that is both 3v and 5v compatible. the rfsa2514 also offers a rugged class 1c hbm esd rating via on-chip esd circuitry. the mcm package is footprint compatible with most 24-pin, 4mm x 4mm, qfn packages. features ? frequency range 50mhz to 4000mhz ? 5-bits, 15.5db range, 0.5db step ? high linearity, iip3 >48dbm ? 3v and 5v logic compatible ? serial-to-parallel controller ? serial programming interface ? power-up programming modes ? on-chip esd protection class 1c hbm ? single supply, 3v to 5v operation ? footprint compatible with most 24-pin, 4mm x 4mm, qfns applications ? transceiver rf and if applications ? cellular, pcs, gsm, umts, lte, wimax/wifi ? wireless data, satellite terminals ? test equipment ds120706 ? package: mcm, 24-pin, 4.2mm x 4.2mm rfsa2514 serial con- trolled digital step attenua- tor 50mhz to 4000mhz, 5- bit, 0.5db lsb rfsa2514sr 7? reel with 100 pieces rfsa2514sq sample bag with 25 pieces RFSA2514TR7 7? reel with 750 pieces rfsa2514tr13 13? reel with 2500 pieces rfsa2514pck-410 50mhz to 4000mhz pcba with 5-piece sample bag
2 of 13 rfsa2514 ds120706 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or customerservice@rfmd.com . absolute maximum ratings parameter rating unit supply voltage +5.5 v dc supply current 15 ma power dissipation 83 mw max rf input power 28.3 dbm operating temperature (t case )-40 to +85c storage temperature -40 to +150 c junction temperature 150 c esd rating (hbm) class 1c moisture sensitivity level msl3 parameter specification unit condition min. typ. max. frequency range 50 4000 mhz insertion loss 0.67 db 50mhz, 0db attenuation 0.78 db 500mhz, 0db attenuation 0.88 db 850mhz, 0db attenuation 1.23 db 2100mhz, 0db attenuation 1.41 db 2700mhz, 0db attenuation 2.15 db 4000mhz, 0db attenuation gain control range 15.5 db 0.5db step size step accuracy (0.1 + 5.0% attenuation setting) db input ip3 48 50 dbm 50mhz to 3000mhz, min. 48dbm 8db bit input p0.5db 26 dbm 50mhz to 100mhz, all states 28 dbm 150mhz to 2500mhz, all states input return loss 29 db 50mhz to 2700mhz, all states 17 db 2700mhz to 4000mhz, all states output return loss 24 db 50mhz to 2700mhz, all states 15 db 2700mhz to 4000mhz, all states control interface 5-bit, serial bit serial 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 typical performance based on 5v operation. supply current 5.3 ma control voltage (v ctl )low, v ctl = 0v to 0.8v v high, v ctl = 2.0v to v dd v notes: 1. v dd = 5v, v ctl = 5v, t = 25c 2. iip3 measured with p in = +12dbm/tone, 1mhz spacing caution! esd sensitive device. exceeding any one or a combination of the absolute maximum rating conditions may cause permanent damage to the device. ex tended application of absolute maximum rating conditions to the device may reduce device reliability. specified typical perfor- mance or functional operation of the devi ce 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. rfmd green: rohs compliant per eu directive 2002/95/ec, halogen free per iec 61249-2-21, < 1000ppm each of antimony trioxide in polymeric materials and red phosphorus as a fl ame retardant, and <2% antimony in solder.
3 of 13 rfsa2514 ds120706 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or customerservice@rfmd.com . parameter specification unit condition min. typ. max. frequency range 50 4000 mhz insertion loss 0.75 db 50mhz, 0db attenuation 0.86 db 500mhz, 0db attenuation 0.96 db 850mhz, 0db attenuation 1.32 db 2100mhz, 0db attenuation 1.51 db 2700mhz, 0db attenuation 2.27 db 4000mhz, 0db attenuation gain control range 15.5 db 0.5db step size step accuracy (0.1 + 5.0% attenuation setting) db input ip3 40 dbm 50mhz to 100mhz 45 50 dbm 100mhz to 3000mhz, min. 45dbm 8db bit input p0.5db 19 dbm 50mhz to 100mhz, all states 21 dbm 150mhz to 2500mhz, all states input return loss 29 db 50mhz to 2700mhz, all states 17 db 2700mhz to 4000mhz, all states output return loss 24 db 50mhz to 2700mhz, all states 15 db 2700mhz to 4000mhz, all states control interface 5-bit, serial bit serial 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 ) 2.8 3.0 3.3 v typical performance based on 3v operation. supply current 5 ma control voltage (v ctl )low, v ctl = 0v to 0.8v v high, v ctl = 2.0v to v dd v notes: 1. v dd = 3v, v ctl = 3v, t = 25c 2. iip3 measured with p in = +12dbm/tone, 1mhz spacing
4 of 13 rfsa2514 ds120706 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or customerservice@rfmd.com . typical performance at 5v v dd - broadband application circuit 0.0 0.5 1.0 1.5 2.0 2.5 0 1,000 2,000 3,000 4,000 insertion loss (db) frequency (mhz) insertion loss versus frequency -40c 25c 85c -18 -16 -14 -12 -10 -8 -6 -4 -2 0 0 1000 2000 3000 4000 attenuation (db) frequency (mhz) normalized attenuation versus frequency 0.5db 1db 2db 4db 8db 15.5db 0 5 10 15 20 25 30 35 40 45 0 1000 2000 3000 4000 input return loss (db) frequency (mhz) input return loss versus frequency 0db 0.5db 1db 2db 4db 8db 15.5db 0 5 10 15 20 25 30 35 40 45 0 1000 2000 3000 4000 output return loss (db) frequency (mhz) output return loss versus frequency 0db 0.5db 1db 2db 4db 8db 15.5db -10 0 10 20 0 1000 2000 3000 4000 relative phase (deg) frequency (mhz) relative phase versus frequency 0.5db 1db 2db 4db 8db 15.5db -1.00 -0.75 -0.50 -0.25 0.00 0.25 0.50 0.75 1.00 0 1000 2000 3000 4000 worst case step error (db) frequency (mhz) worst case step e rror between successive states
5 of 13 rfsa2514 ds120706 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or customerservice@rfmd.com . typical performance at 5v v dd - broadband application circuit -1.00 -0.75 -0.50 -0.25 0.00 0.25 0.50 0.75 1.00 0 1000 2000 3000 4000 step error (db) frequency (mhz) major step error versus frequency 0.5db 1db 2db 4db 8db 15.5db -1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 04812 16 step error (db) attenuation (db) step error versus attenuation 50mhz 400mhz 1000mhz 2000mhz 3000mhz 4000mhz 30 35 40 45 50 55 60 0 500 1000 1500 2000 2500 3000 input ip3 (dbm) frequency (mhz) input ip3 versus frequency 0db 0.5db 1db 2db 4db 8db 15.5db 15 20 25 30 35 0 500 1000 1500 2000 2500 input p0.5db (db) frequency (mhz) input p0.5db versus frequency 0db 0.5db 1db 2db 4db 8db
6 of 13 rfsa2514 ds120706 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or customerservice@rfmd.com . typical performance at 3v v dd - broadband application circuit 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0 1,000 2,000 3,000 4,000 insertion loss (db) frequency (mhz) insertion loss versus frequency -40c 25c 85c -18 -16 -14 -12 -10 -8 -6 -4 -2 0 0 1000 2000 3000 4000 attenuation(db) frequency (mhz) normalized attenuation versus frequency 0.5db 1db 2db 4db 8db 15.5db 0 5 10 15 20 25 30 35 40 45 0 1000 2000 3000 4000 input return loss (db) frequency (mhz) input return loss versus frequency 0db 0.5db 1db 2db 4db 8db 15.5db 0 5 10 15 20 25 30 35 40 45 0 1000 2000 3000 4000 output return loss (db) frequency (mhz) output return loss versus frequency 0db 0.5db 1db 2db 4db 8db 15.5db -10 0 10 20 0 1000 2000 3000 4000 relative phase (deg) frequency (mhz) relative phase versus frequency 0.5db 1db 2db 4db 8db 15.5db -1.00 -0.75 -0.50 -0.25 0.00 0.25 0.50 0.75 1.00 0 1000 2000 3000 4000 worst case step error (db) frequency (mhz) worst case step e rror between successive states
7 of 13 rfsa2514 ds120706 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or customerservice@rfmd.com . typical performance at 3v v dd - broadband application circuit -1.00 -0.75 -0.50 -0.25 0.00 0.25 0.50 0.75 1.00 0 1000 2000 3000 4000 step error (db) frequency (mhz) major step error versus frequency 0.5db 1db 2db 4db 8db 15.5db -1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 04812 16 step error (db) attenuation (db) step error versus attenuation 50mhz 400mhz 1000mhz 2000mhz 3000mhz 4000mhz 30 35 40 45 50 55 60 0 500 1000 1500 2000 2500 3000 input ip3 (dbm) frequency (mhz) input ip3 versus frequency 0db 0.5db 1db 2db 4db 8db 15.5db 10 15 20 25 30 0 500 1000 1500 2000 2500 input p0.5db (db) frequency (mhz) input p0.5db versus frequency 0db 0.5db 1db 2db 4db 8db
8 of 13 rfsa2514 ds120706 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or customerservice@rfmd.com . serial port interface truth table spi timing diagram programming example - 5-bit control bits relative gain setting c8 c4 c2 c1 c0.5 11111 max gain 11110-0.5db 11101-1db 11011-2db 10111-4db 01111-8db 00000-15.5db spi timing diagram specifications parameter limit unit comment logic voltage levels t1 25 mhz max clk frequency state logic t2 20 ns min clk high low 0v to 0.8v t3 20 ns min clk low high 2.0v to 5.0v t4 5 ns min data to clk setup time t5 5 ns min data to clk hold time power-up programming truth table t6 30 ns min data valid pup attenuator setting t7 5 ns min le to clk setup time low attenuation at max, 15.5db t8 5 ns min clk to le setup time high attenuation at min, 0db t9 10 ns min le pulse width t10 20 ns max output set clk data t6 le t1 t2 t3 t4 t5 t7 t8 dout t9 t10 msb d4 d3 d2 d0 d1 clk data le lsb
9 of 13 rfsa2514 ds120706 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or customerservice@rfmd.com . evaluation board schematic 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
10 of 13 rfsa2514 ds120706 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or customerservice@rfmd.com . evaluation board bill of materials (bom) description reference designator manufacturer manufacturer?s p/n rfsa2714 evaluation board dynamic details (ddi) toronto sa2714410(a) 50mhz to 4000mhz serial 5-bit dsa 0.5db step u1 rfmd rfsa2514sb cap, 10000pf, 10%, 25v, x7r, 0402 c11-c12 murata electronics grm155r71e103ka01d cap, 1000pf, 10%, 50v, x7r, 0402 c7 taiyo yuden (usa), inc. rm umk105bj102kv-f res, 0 ? , 0402 r1-r2, r4-r5, 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-c20 na na dnp r3, r6-r7 na na notes: m1 is to be mounted into p2 with respect to the pin 1 alignment of m1 and p2
11 of 13 rfsa2514 ds120706 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or customerservice@rfmd.com . evaluation board assembly drawing
12 of 13 rfsa2514 ds120706 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or customerservice@rfmd.com . pin names and descriptions pin name description 1gnd connect to low inductance path to ground 2vdd power supply 3gnd connect to low inductance path to ground 4rf1 rf port. external dc block required 5gnd connect to low inductance path to ground 6gnd connect to low inductance path to ground 7gnd connect to low inductance path to ground 8gnd connect to low inductance path to ground 9gnd connect to low inductance path to ground 10 gnd connect to low inductance path to ground 11 gnd connect to low inductance path to ground 12 gnd connect to low inductance path to ground 13 gnd connect to low inductance path to ground 14 gnd connect to low inductance path to ground 15 rf2 rf port. external dc block required. 16 gnd connect to low inductance path to ground 17 gnd connect to low inductance path to ground 18 gnd connect to low inductance path to ground 19 nc no internal connection. evb can be ground or no connect 20 pup power-up programming pin low = max attenuation (15.5db) at power-up high = min attenuation (0db) at power-up 21 clk serial clock 22 le latch enable 23 nc no internal connection; evb can be ground or no connect 24 data serial data epad gnd dc and rf ground; must be soldered to evb ground plane over a bed of vias for thermal and rf performance.
13 of 13 rfsa2514 ds120706 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or customerservice@rfmd.com . package drawing branding diagram

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