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rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 50128 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . rf micro devices ? and rfmd ? are trademarks of rfmd, llc. bluetooth is a trademark owned by bluetooth sig, inc., u.s.a. and licensed for use by rfmd. all other trade names, trademarks , and registered trademarks are the property of their respective owners. ?2013, rf micro devices, inc. 1 of 16 rfsa3713 rf sa3713 5 mhz to 6 000mhz, digital step attenuator the rfmds rf sa3713 is a 7 - bit digital step attenuator (dsa) that features high linearity over the entire 31 .75 db gain control range with 0 .25 db steps. the rf sa3713 uses serial control interface . the rf sa3713 has a low insertion loss of 1. 4 db at 2ghz. patent pending circuit architecture provides overshoot - free transient switching performance. external address pins allow up to eight dsas to be controlled on a single bus. the rf sa3713 is available in a 3mm x 3 mm qfn package. functional block diagram ordering information rf sa3713 sq sample b ag with 25 pieces rf sa3713 sr 7" reel with 100 pieces rf sa3713 tr7 7 " reel with 2500 pieces rf sa3713 pck - 410 5 mhz to 6 000m hz pcba with 5 - piece sample bag package: qfn , 16 - pin, 3 .0mm x 3 .0mm x 0.85mm features 7 - bit, 31 .75 db range, 0 .25 db step patent pending circuit architecture overshoot - free transient switching performance frequency range 5 mhz to 6 000mhz high linearity, iip3 > 5 5 dbm serial control interface fast switching speed, < 12 0nsec typical serial addressable supports up to eight addresses single supply 3v to 5v operation rf pins have no dc voltage, can be dc grounded externally power - up default setting is maximum attenuation applications 2g through 4g base stations point - to - point wimax/wifi test equipme nt rf sa3713 1 6 1 2 3 4 1 5 1 4 1 3 1 2 1 1 1 0 9 5 6 7 8 7 - b i t d s a l o g i c c o n t r o l v d d a 0 g n d r f i n g n d g n d g n d g n d l e g n d g n d r f o u t a 2 a 1 s i c l k
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 50128 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . rf micro devices ? and rfmd ? are trademarks of rfmd, llc. bluetooth is a trademark owned by bluetooth sig, inc., u.s.a. and licensed for use by rfmd. all other trade names, trademarks , and registered trademarks are the property of their respective owners. ?2013, rf micro devices, inc. 2 of 16 rfsa3713 absolute maximum rat i ngs parameter rating unit supply voltage (v dd ) - 0.5 to +6.0 v all other dc and logic pins (supply voltage must be applied prior to any other pin voltages) - 0.5 to v dd v maximum input power at rfin pin at 85 c case temperature +30 dbm maximum input power at rfout pin at 85 c case temperature +27 dbm storage temperature range - 40 to +150 c esd rating - human body model (hbm) 1000 v moisture sensitivity level msl1 caution! esd sensitive device. rfmd green: rohs status based on eu directive 2011/65/eu (at time of this document revision) , halogen free per iec 61249 - 2 - 21, < 1000ppm each of antimony trioxide in polymeric materials and red phosphorus as a flame retardant, and <2% antimony in solder. 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 performance or functional operation of the device under absolute maximum rating conditions is not implied. recommended operating condition parameter specification unit min typ max operating temperature range ( rf input power handling derates above +85 c ) - 40 +105 c operating junction temperature 125 c supply voltage 2.7 5.5 v nominal operating parameters parameter specification unit condition min typ max general performance supply current 180 a steady state operation, current draw during attenuation state transitions is higher. thermal resistance 55 c/w at maximum attenuation state with rf power applied to the rfin pin. rf input power at rfin pin 27 dbm continuous operation at +85 c case temperature rf input power at rfout pin 20 dbm rf performance frequency range 5 6 000 mhz insertion loss 1. 4 db 2000mhz, 0db attenuation attenuation range 31 .75 db 0.25 db step size absolute attenuation error (0.2 + 4%) db input ip3 55 dbm input p 0 .1db 30 dbm return loss 15 db input and output impedance 50
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 50128 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("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 ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 3 of 16 rfsa3713 parameter specification unit condition min typ max rf performance C continued switching speed 120 n sec 50% control to 10%/90% rf successive step phase delta 2 deg 2000mhz control digital logic low 0.63 v digital logic high 1.17 v note: typical performance at these conditions: temp = + 25 c, 2000mhz, 5v supply voltage
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 50128 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("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 ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 4 of 16 rfsa3713 typical application schematic
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 50128 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("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 ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 5 of 16 rfsa3713 typical performance:
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 50128 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("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 ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 6 of 16 rfsa3713 typical performance: note: attenuator remains monotonic if step error is less than +0. 2 5db.
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 50128 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("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 ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 7 of 16 rfsa3713 typical performance:
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 50128 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("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 ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 8 of 16 rfsa3713 typical performance:
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 50128 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("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 ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 9 of 16 rfsa3713 evaluation board schematic
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 50128 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("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 ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 10 of 16 rfsa3713 evaluation board bill of materials (bom) description reference designator manufacturer manufacturer's p/n sa3 6 13 - 410 dynamic details (ddi) toronto sa36 13 - 410(b ) dig ital step attenuator, 5 mhz to 4 000mhz u1 rfmd rf sa3713 sb cap, 1 f, 10%, 25v, x7r, 1206 c1 taiyo yuden (usa), inc. ce tmk316bj105kl - t conn, sma, end lnch, univ, hyb mnt, flt j1 - j4 molex sd - 73251 - 4000 conn, hdr, st, plrzd, 2 - pin, 0.100 p1 itw pancon mpss100 - 2 - c conn, hdr, st, 3 x 5, 0.100, t/h p3 samtec inc. tsw - 105 - 07 - l - t conn, hdr, 2 x 4, ra, 0.100, t/h p4 samtec inc. tsw - 104 - 08 - g - d - ra conn, skt, 24 - pin dip, 0.600, t/h p2 aries electronics inc. 24 - 6518 - 10 mod, usb to serial uart, ssop - 28 m1 (see note 1 ) future technology devices intl um232r cap, 470pf, 5%, 50v, c0g, 0402 c4 murata electronics grm1555c1h471ja01d jumper, 2 - pin s1 - s4 (see note 2) 3m interconnect soltuions 929950.00 dnp c5 - c13 n/a n/a note s : 1. m1 should be mounted into p2 with respect to the pin 1 alignment of m1 and p2. 2. install s1 - s4 into p3 as indicated on the evaluation board assembly drawing.
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 50128 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("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 ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 11 of 16 rfsa3713 evaluation board assembly drawing
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 50128 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("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 ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 12 of 16 rfsa3713 evaluation board jumper programming jumpers connector signal position u1 connection comment s1 p3 logic voltage 0 vdd (from p 1 ) 1 vio (from p4) s2 a0 0 gnd external address 1 u1_vdd s3 a1 0 gnd external address 1 u1_vdd s4 a2 0 gnd external address 1 u1_vdd note: default jumper settings are bold . evaluation board programming using usb interface serial addressable mode all programming jumpers on the evaluation board are set to the default values indicated in the table. refer to the control bit generator (cbg) software reference manual for detailed instructions on how to setup the software for use. apply the supply voltage to p 1 . select rfsa371 3 from the rfmd parts list of the cbg user interface. set the attenuation value using the cbg user interface. the attenuator is set to the desired state and measurement can be taken. note that the external address bits must all be set to 0 when using the usb interface as the cgb software does not have the capabili ty to set the external address in the serial data stream at this time. evaluation board programming using external bus serial addressable mode the configuration allows the user to control the attenuator through the p 4 connector using an external harness. remove the usb interface board if it is currently installed on the evaluation board. connect a user - supplied harness to the p 4 connector. note that the top row of p 4 contains the serial bus signals and the bottom row is ground. programming jumper s1 is set to 0. ex ternal address jumpers s2 through s4 can be set to any value desired by the user. apply the supply voltage p 1 . send the appropriate signals onto the serial bus lines in accordance with the serial mode timing diagram. the attenuator is set to the desired st ate and measurements can be taken. default power - up state the default attenuation state is maximum (31.75db) when supply voltage is applied to the attenuator. the le signal must be held to logic 0 during power up.
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 50128 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("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 ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 13 of 16 rfsa3713 pin names and descriptions pin name description 1 vdd supply voltage 2 a0 a0 external address pin 3 gnd ground pin 4 rfin rf input pin incident rf power must enter this pin for rated thermal performance and reliability do not apply dc power to this pin. pin may be dc grounded externally and is grounded thru resistors internal to the part. 5 gnd ground pin 6 gnd ground pin 7 gnd ground pin 8 gnd ground pin 9 rfout rf output pin ; do not apply dc power to this pin. pin may be dc grounded externally and is grounded thru resistors internal to the part. 10 gnd ground pin 11 gnd ground pin 12 le latch enable the leading edge of signal on le causes the attenuator to change state 13 clk serial clock input 14 si serial data input 15 a1 a1 external address pin 16 a2 a2 external address pin serial addressable mode attenuation word truth table attenuation word attenuation state d7 d6 d5 d4 d3 d2 d1 d0 (lsb) x l l l l l l l 0db / reference insertion loss x l l l l l l h 0.25db x l l l l l h l 0.5db x l l l l h l l 1db x l l l h l l l 2db x l l h l l l l 4db x l h l l l l l 8db x h l l l l l l 16db x h h h h h h h 31.75db
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 50128 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("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 ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 14 of 16 rfsa3713 serial addressable mode address word truth table address word address setting a7 a6 a5 a4 a3 a2 (msb) a1 a0 x x x x x l l l 000 x x x x x l l h 001 x x x x x l h l 010 x x x x x l h h 011 x x x x x h l l 100 x x x x x h l h 101 x x x x x h h l 110 x x x x x h h h 111 serial addressable mode timing diagram c l k l e s i d 0 d 2 d 1 d 4 d 6 d 5 d 3 a 0 a 2 a 1 d 7 a 4 a 6 a 5 a 3 a 7 x a [ 2 : 0 ] v a l i d x x a [ 2 : 0 ] e x t e r n a l a d d r e s s s e t t i n g x n o t e : b i t s d 7 , a 3 - a 7 a r e n o t u s e d a n d c a n b e s e t t o l o g i c h i g h o r l o w
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 50128 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("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 ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 15 of 16 rfsa3713 serial bus timing specifications parameter limit unit comment t1 25 mhz max clk frequency t2 20 ns min clk high t3 20 ns min clk low t4 5 ns min si to clk setup time t5 5 ns min si to clk hold time t6 30 ns min si valid t7 5 ns min le to clk setup time t8 5 ns min clk to le setup time t9 10 ns min le pulse width
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 50128 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("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 ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 16 of 16 rfsa3713 package drawing (dimensions in millimeters) branding diagram

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