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1 of 11 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. ?2006, 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 sales-support@rfmd.com . ordering information bifet hbt ldmos 1 2 3 4 9 10 11 12 20 19 18 17 32 31 30 29 a2 5 6 7 8 13 14 15 16 24 23 22 21 28 27 26 25 5-bit step attenuator 5-bit step attenuator amp amp a3 a4 vcma vcmb b4 b3 b2 opa+ opa- enba resa resb enbb opb- opb+ b1 b0 ipb+ ipb- gndb vccb opb+ opb- a1 a0 ipa+ ipa- gnda vcca opa+ opa- rfda0035 digital controlled if dual vga 5 bit 1db lsb control rfmd's rfda0035 is a dual-channel, digitall y controlled variable gain amplifier fea- turing high linearity over the entire 32 ga in control steps. it features independent channel power-up enable, independent chan nel current adjustability for optimizing dc versus ip3 and a 200 ? differential input and output impedance. features ? dual independent digitally controlled vgas ? bandwidth of 500mhz (-3db) ? gain control range=31db (1db step size) ? differential input and output ? max gain=19.0db@180mhz ? noise figure: 7.5db@maximum gain ? high oip3/p1db=+42/21dbm @180mhz ? relative phase shift<1 ? single +5v supply ? dual 5-bit parallel control interface ? individual enable control for each vga ? current adjustable for ip3 trade offs ? small 32-pin, 5.0mmx5.0mm, qfn applications ? differential adc drivers ? main and diversity if sampling receivers ? wideband multichannel receivers ? instrumentation ds110329 ? package: qfn 32-pin, 5.0mmx5.0mm rfda0035dig- ital controlled if dual vga rfda0035sr 7? sample reel with 100 pieces RFDA0035SQ 25 piece sample bag rfda0035tr7 7? reel with 750 pieces rfda0035tr13 13? reel with 2500 pieces rfda0035pck-410 50mhz to 500mhz pcba with 5-piece sample bag
2 of 11 rfda0035 ds110329 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com . absolute maximum ratings parameter rating unit supply voltage +6.0 v dc dc supply current 300 ma power dissipation 1600 mw max rf input power 27 dbm operating temperature (t case )-40 to +85c storage temperature -40 to +150 c junction temperature 125 c esd rating (hbm) 500 v moisture sensitivity level 2 parameter specification unit condition min. typ. max. overall t=25c, v cc =v dd =5v, standard application circuit frequency range 50 500 mhz -3db bandwidth max gain 19.3 db attenuation=0db, 180mhz gaincontrolrange 31 db step accuracy +/- (0.1+1.5% attenuation setting) db major state error up to 400mhz output p1db 21 dbm at 180mhz, upper 24db steps output ip3 42 dbm at 180mhz, p out =5dbm/tone, 1mhz spacing control interface 5 bit parallel interface relative phase shift 1 50mhz~300mhz settling time 15 ns ton, toff (10%/90% rf) noise figure 7.5 db attenuation=0db impedance 200 ? differential input return loss -12 db output return loss -15 db total supply voltage 4.75 5.0 5.25 v supply current 240 ma both channels are enabled. can be adjusted by external resistors from resa/b to ground. typical rf performance at key operating frequencies parameter unit 100mhz 180mhz 300mhz max small signal gain db 19.3 19.3 19.0 output p1db dbm 21 21 21 output ip3 [1] dbm 43 42 40 input return loss db -15 -13 -15 output return loss db -17 -20 -17 noise figure db 7.0 7.2 7.5 note: [1] oip3 is tested at p out =5dbm/tone and 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 11 rfda0035 ds110329 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com . -15 -10 -5 0 5 10 15 20 0 5 10 15 20 25 30 gain (db) attenuation state (db) gain (db) versus attenuation at different frequencies 180 mhz 300 mhz 400 mhz 500 mhz -1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 0 100 200 300 400 500 bitt error (db) frequency (mhz) major attenuation states bit error (db) versus frequency 1db 2db 4db 8db 16db 31db -20 -15 -10 -5 0 5 10 15 20 25 0 100 200 300 400 500 gain (db) frequency (mhz) all states' gain (db) versus frequency -1.0 -0.8 -0.6 -0.4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 0 4 8 12 16 20 24 28 32 bit error (db) attenuation state (db) bit error (db) versus attenuation state 60mhz 100mhz 180mhz 300mhz 16 17 18 19 20 21 0 100 200 300 400 500 gain (db) frequency (mhz) max gain (db) versus frequency, three temperatures -40c 25c 85c -1 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1 0 100 200 300 400 500 step error (db) frequency (mhz) worst case step error (db) between successive attenuation states
4 of 11 rfda0035 ds110329 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com . -3.0 -2.0 -1.0 0.0 1.0 2.0 3.0 0 4 8 12 16 20 24 28 32 phase attenuation state (db) relative phase related to max gain step 50mhz 100mhz 180mhz 300mhz 30 32 34 36 38 40 42 44 46 48 50 -3 -1 1 3 5 output ip3 (dbm) output power (dbm) max gain output ip3 (dbm) versus p out , frequency 180mhz -35 -30 -25 -20 -15 -10 -5 0 0 100 200 300 400 500 return loss (db) frequency (mhz) input return loss (db) versus frequency 0db 1db 2db 4db 8db 16db 31db 30 32 34 36 38 40 42 44 46 48 50 -3 -1 1 3 5 output ip3 (dbm) output power (dbm) 25db attenuation state output ip3 (dbm) versus p out , frequency 180mhz -35 -30 -25 -20 -15 -10 -5 0 0 100 200 300 400 500 return loss (db) frequency (mhz) output return loss (db) versus frequency 0db 1db 2db 4db 8db 16db 31db 30 32 34 36 38 40 42 44 46 48 50 50 100 150 200 250 300 output ip3 (dbm) frequency (mhz) output ip3 (dbm) versus frequency, p out 5dbm/tone 0db 1db 2db 4db 8db 16db 31db
5 of 11 rfda0035 ds110329 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com . 35 37 39 41 43 45 47 49 51 53 55 50 100 150 200 250 300 output ip3 (dbm) frequency (mhz) max gain output ip3 (dbm) versus frequency, p out 5dbm/tone -100 -95 -90 -85 -80 -75 -70 -65 -60 -55 -50 0 5 10 15 20 25 30 3rd harmonic (dbc) attenuation state (dbm) 3rd harmonic (dbc) versus attenuation at 180mhz, p out 5dbm 30 32 34 36 38 40 42 44 46 48 50 0 5 10 15 20 25 30 output ip3 (dbm) attenuation state (db) output ip3 (dbm) versus attenuation at 180mhz, p out 5dbm/tone -100 -95 -90 -85 -80 -75 -70 -65 -60 -55 -50 -5 -3 -1 1 3 5 2nd harmonic (dbc) output power (dbm) 2nd harmonic (dbc) versus p out at 180mhz 0db 1db 2db 4db 8db 16db 31db -100 -95 -90 -85 -80 -75 -70 -65 -60 -55 -50 0 5 10 15 20 25 30 2nd harmonic (dbc) attenuation state (dbm) 2nd harmonic (dbc) versus attenuation at 180mhz, p out 5dbm -100 -95 -90 -85 -80 -75 -70 -65 -60 -55 -50 -5 -3 -1 1 3 5 3rd harmonic (dbc) output power (dbm) 3rd harmonic (dbc) versus p out at 180mhz 0db 1db 2db 4db 8db 16db 31db
6 of 11 rfda0035 ds110329 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com . 10 12 14 16 18 20 22 24 26 28 30 0 5 10 15 20 25 30 output p1db (dbm) attenuation state (db) 180mhz output p1db (dbm) versus attenuation states 2 3 4 5 6 7 8 9 10 11 12 50 100 150 200 250 300 350 400 450 500 noise figure (db) frequency (mhz) max gain noise figure (db) versus frequency 10 12 14 16 18 20 22 24 26 28 30 50 100 150 200 250 300 350 400 450 500 output p1db (dbm) frequency (mhz) max gain output p1db (dbm) versus frequency -40 25 85 -100 -90 -80 -70 -60 -50 -40 0 50 100 150 200 250 300 350 400 450 500 channel isolation (db) frequency (mhz) max gain channel isolation (db) (output to output) versus frequency
7 of 11 rfda0035 ds110329 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com . truth table control bits gain relative to maximum gain a4/b4 a3/b3 a2/b2 a1/b1 a0/b0 00000 0db 00001 -1db 00010 -2db 00011 -3db 00100 -4db 00101 -5db 00110 -6db 00111 -7db 01000 -8db 01001 -9db 01010 -10db 01011 -11db 01100 -12db 01101 -13db 01110 -14db 01111 -15db 10000 -16db 10001 -17db 10010 -18db 10011 -19db 10100 -20db 10101 -21db 10110 -22db 10111 -23db 11000 -24db 11001 -25db 11010 -26db 11011 -27db 11100 -28db 11101 -29db 11110 -30db 11111 -31db logic voltage levels state logic low 0.0v to 1.0v high 1.8v to 5.0v
8 of 11 rfda0035 ds110329 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com . pin names and descriptions pin function description 1a2 msb - 2 for the gain control interface for channel a. 2a3 msb - 1 for the gain control interface for channel a. 3a4 msb for the 5-bit gain cont rol interface for channel a. 4vcma channel a input common-mode voltage. typically bypassed to ground through capacitor. 5vcmb channel b input common-mode voltage. typically bypassed to ground through capacitor. 6b4 msb for the 5-bit gain cont rol interface for channel b. 7b3 msb - 1 for the gain control interface for channel b. 8b2 msb - 2 for the gain control interface for channel b. 9b1 lsb + 1 for the gain control interface for channel b. 10 b0 lsb for the gain control interface for channel b. 11 ipb+ channel b positive input. 12 ipb- channel b negative input. 13 gndb device common (dc ground) for channel b. 14 vccb positive supply pin for channel b. should be bypassed to ground using suitable bypass capacitor. 15 0pb+ positive output pins (open collector) for channel b. require dc bias of +5v nominal. 16 0pb- negative output pins (open collector) for channel b. require dc bias of +5v nominal. 17 0pb+ positive output pins (open collector) for channel b. require dc bias of +5v nominal. 18 0pb- negative output pins (open collector) for channel b. require dc bias of +5v nominal. 19 enbb power enable pin for channel b. channel b is enabled with a logic high and disabled with a logic low. 20 resb current adjust pin. connect a resistor from resb to ground can adjust the channel b dc current from 90ma to 120ma. leave pin floating for nominal bias of 120ma. 21 resa current adjust pin. connect a resistor from resa to ground can adjust the channel a dc current from 90ma to 120ma. leave pin floating for nominal bias of 120ma. 22 enba power enable pin for channel a. channel a is enabled with a logic high and disabled with a logic low. 23 opa- negative output pins (open collector) for channel a. require dc bias of +5v nominal. 24 opa+ positive output pins (open collector) for channel a. require dc bias of +5v nominal. 25 opa- negative output pins (open collector) for channel a. require dc bias of +5v nominal. 26 opa+ positive output pins (open collector) for channel a. require dc bias of +5v nominal. 27 vcca positive supply pins for channel a. should be bypassed to ground using suitable bypass capacitor. 28 gnda device common (dc ground) for channel a 29 ipa- channel a negative input. 30 ipa+ channel a positive input. 31 a0 lsb for the gain control interface for channel a. 32 a1 lsb + 1 for the gain control interface for channel a.
9 of 11 rfda0035 ds110329 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com . package drawing 5.0mmx5.0mm, 32 lead, qfn 5.0000.100 5.0000.100 3.1000.10 3.1000.10 0.400.10 0.203 ref 0.850.050 0.500 bsc 3.500 ref 0.230.050 bottom view side view top view
10 of 11 rfda0035 ds110329 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com . evaluation board assembly drawing
11 of 11 rfda0035 ds110329 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com . application schematic a2 a3 a4 vcma vcmb b4 b3 b1 b0 ipb+ ipb- gndb opb+ opb- a1 a0 ipa+ ipa- gnda vcca opa+ opa- enba resa resb enbb opb- opb+ opa- b2 vccb opa+ rfda0035 rfin_a 5v rfout_a enable a 0.1uf 0.1uf 0.1uf x2 a0 thru a4 channel a parallel interface default rbias 1meg ohm for 120ma nominal current per channel rbias minicircuit tc4-6t+ 1:4 balun 4 places only required for single ended 50 ohm tests 27nh x2 0.1uf x2 33nh x2 5v 0.1uf 0.1uf 5v 1uh 1uh rfin_b 5v rfout_b enable b 0.1uf 0.1uf 0.1uf x2 a0 thru a4 channel b parallel interface rbias minicircuit tc4-6t+ 1:4 balun 4 places only required for single ended 50 ohm tests 27nh x2 0.1uf x2 33nh x2 5v 0.1uf 0.1uf 5v 1uh 1uh 0.1uf 0.1uf 1pf 1pf

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