specifications and information are subject to change wit hout notice wj communications, inc ? phone 1-800-wj1-4401 ? fax: 408-577-6621 ? e-mail: sales@wj.com ? web site: www.wj.com page 1 of 4 april 2007 cv110 - 2a cellular-band high linearity downconverter product features ? high dynamic range downconverter with integrated lo, if, & rf amps ? rf: 800 ? 960 mhz ? if: 200 ? 250 mhz ? +37 dbm output ip3 ? +20 dbm output p1db ? 5 db noise figure ? +5v single supply operation ? pb-free 6mm 28-pin qfn package ? low-side lo configuration ? common footprint with other pcs/umts versions product description the cv110-2a is a high linearity downconverter designed to meet the demanding issues for performan ce, functionality, and cost goals of current and next generation mobile infrastructure. it provides high dynamic range performance in a low profile surface- mount leadless package that measures 6 x 6 mm squar e. functionality includes rf amplification, frequency conversion and if amplification, while an integrate d lo driver amplifier powers the passive mixer. the mcm is implemented with reliable and mature gaas mesfet and ingap hbt technology. typical applications include frequency downconversi on used in cdma/gsm/tdma, cdma2000, w-cdma, and edge 2.5g and 3g mobile base transceiver statio ns for cellular frequency bands. functional diagram specifications (1) parameters units min typ max comments rf frequency range mhz 800 ? 960 lo frequency range mhz 550 ? 760 if center frequency range mhz 200 ? 250 see note 2 % bandwidth around if center frequency % 7.5 see note 3 if test frequency mhz 240 ssb conversion gain db 22 temp = 25 c gain drift over temp (-40 to 85 c) db 1.5 referenced to +25 c output ip3 dbm +37 see note 4 output ip2 dbm +45 see note 4 output 1db compression point dbm +20 noise figure db 5 see note 5 lo input drive level dbm -2.5 0 +2.5 lo-rf isolation db 60 see note 6 lo-if isolation db 40 p lo = 0 dbm return loss: rf port db 15 return loss: lo port db 10 return loss: if port db 15 operating supply voltage v +4.9 +5 +5.1 supply current ma 290 360 480 fit rating failures / 1e9 hrs 72.1 @ 70 o c ambient, 90% confidence thermal resistance c / w 27 junction temperature c 160 see note 7 1. specifications when using the application specific circ uit (shown on page 3) with a low side lo = 0 dbm in a down converting application over the operating case temperature range. 2. if matching components affect the center if frequency. proper component values for other if center frequencies than shown can be provided by emailing to applications.engine ering@wj.com. 3. the if bandwidth of the converter is defined as 15% aro und any center frequency in its operating if frequency range. the bandwidth is determined with external components. specifications are valid around the total 7.5% bandwidth. ie. with a center frequency o f 240 mhz, the specifications are valid from 240 18 mhz. 4. assumes the supply voltage = +5 v. oip3 is measured wi th ? f = 1 mhz with if out = 5 dbm / tone. 5. assumes lo injection noise is filtered at the the rmal noise floor, -174 dbm/hz, at the rf, if, and image f requencies. 6. l-r isolation is referenced to an lo injection of 0 db m. the l-r performance shown also includes the isola tion due to an external saw filter between the rf amp lifier and mixer. 7. the maximum junction temperature ensures a minimum mttf rating of 1 million hours of usage. absolute maximum rating parameter rating operating case temperature -40 to +85 c storage temperature -55 to +125 c dc voltage +6 v junction temperature +220 c rf input (continuous) +2 dbm operation of this device above any of these parameters ma y cause permanent damage. ordering information part no. description cv110-2af cellular-band high linearity downconverter (lead-free/rohs-compliant 6x6mm qfn package) cv110-2apcb240 fully assembled eval. board, if = 24 0mhz gnd rf in gnd if thru gnd if in gnd 1 2 3 4 5 6 7 21 20 19 18 17 16 15 28 27 26 25 24 23 22 8 9 10 11 12 13 14 if amp rf amp lo driver amp if out gnd n/c gnd bias gnd lo in rf out gnd n/c gnd if thru gnd rf/if gnd n/c gnd mixlo gnd lo out gnd rf/if if feedthru path lo
specifications and information are subject to change wit hout notice wj communications, inc ? phone 1-800-wj1-4401 ? fax: 408-577-6621 ? e-mail: sales@wj.com ? web site: www.wj.com page 2 of 4 april 2007 cv110 - 2a cellular-band high linearity downconverter device architecture / application circuit informati on typical downconverter performance chain analysis cumulative performance stage gain (db) output p1db (dbm) output ip3 (dbm) nf (db) current (ma) gain (db) output p1db (dbm) output ip3 (dbm) nf (db) rf amplifier 13.5 21 40.0 3.5 150 13.5 21.0 40.0 3. 5 rf filter -1.5 --- --- 1.5 --- 12.0 19.5 38.5 3.5 mmic mixer -9.0 8 23.0 9.8 60 3.0 6.1 22.1 4.5 if amplifier 19.0 22 39.1 2.5 150 22.0 20.3 37.0 5. 0 cv110-2a cumulative performance 360 22.0 20.3 37.0 5.0 cv110-2a : the application circuit can be broken up into fou r main functions as denoted in the colored dotted areas ab ove: rf/if diplexing (purple), amplifier matching (green), fil tering (red), and dc biasing (blue). there are various placeholders for chip components in the circuit schematic so that a common pcb can be u sed for all wj single-branch converters. additional placeholders for other optional functions such as filtering are also included. rf / if amplifier matching: the rf amplifier requires a shunt matching element for optimal gain and input return loss performance. the if amplifier requires matching elements to opti mize the performance of the amplifier to the desired if cent er frequency. since if bandwidths are typically on the order of 5 to 10%, a simple two element matching network, in the form of either a high-pass or low-pass filter structure, is sufficient to match t he mmic if amplifier over these narrow bandwidths. proper com ponent values for other if center frequencies can be provided by emailing to applications.engineering@wj.com. rf bandpass filtering: bandpass filtering is recommended to reject the image frequencies and achieve the best n oise figure performance with the downconverter. the bandpass f ilter, implemented with a saw filter on the application ci rcuit, allows for the suppression of noise from the image frequency. it is permissible to not use a filter and use a 2 db pad with r6, r7, and r16 instead with slightly degraded noise figure performance. s tandard wj evaluation boards will have the 2 db pad in place. external diplexer: in a downconversion application, the incoming rf signal impinges on the switching elements of the mixer; the interaction with these switches produces a signal a t the if frequency. the two signals (rf and if) are directed to the app ropriate ports by the external diplexer. pin 5 contains the if signa l and allows the signal to be transferred to pin 25 for the convenie nce of pcb layouts. dc biasing: dc bias must be provided for the rf, lo and if amplifiers in the converter. r1 sets the operating current for the last stage of the lo amplifier and is chosen to optimize the mixer lo drive level. proper rf chokes and bypass capacitor s are chosen for proper amplifier biasing at the intended frequency of operation. the ?+5 v? dc bias should be supplied directly from a v oltage regulator. if amplifier matching frequency (mhz) 180 210 240 l7 (nh) 82 82 56 c17 (pf) 4.7 3.3 3.9 r8 (ohms) 2.2 2.2 2.2 l4 (nh) 330 220 220 gnd rf in gnd if thru gnd if in gnd 1 2 3 4 5 6 7 21 20 19 18 17 16 15 28 27 26 25 24 23 22 8 9 10 11 12 13 14 if amp rf amp lo driver amp if out gnd n/c gnd bias gnd lo in rf out gnd n/c gnd if thru gnd rf/if gnd n/c gnd mixlo gnd lo out gnd rf/if if feedthru path lo printed circuit board material: .014? fr - 4, 4 layers, .062? total thickness rf amp bias if amp bias lo amp bias lo amp bias rf bandpass filter / attenuator pad rf amp matching if amp matching rf / if diplexer (used for cellular versions only)
specifications and information are subject to change wit hout notice wj communications, inc ? phone 1-800-wj1-4401 ? fax: 408-577-6621 ? e-mail: sales@wj.com ? web site: www.wj.com page 3 of 4 april 2007 cv110 - 2a cellular-band high linearity downconverter downconverting application circuit: cv110-2apcb240 rf = 800 ? 960 mhz, if = 240 mhz pcb layout circuit board material: .014? fr-4, 4 layers, .062? total thickness bill of materials ref. desig. component r1 13 chip resistor, size 0805 r2, r3, r4, r5 0 chip resistor r6, r7 470 chip resistor r8 2.2 chip resistor r9, r10 200 chip resistor r11 27 chip resistor r16 10 chip resistor c1, c3, c4, c5, c6 100 pf chip capacitor c2 8.2 pf chip capacitor c7, c9, c16 0.018 f chip capacitor c8, c10 1000 pf chip capacitor c11, c12, c13, c18, c21, f1 shown in silkscreen, but not used in actual circuit. c14 5.6 pf chip capacitor c15 12 pf chip capacitor c17 3.9 pf chip capacitor c18 1.5 pf chip capacitor l2 18 nh chip inductor l3 120 nh chip inductor l4 220 nh chip inductor, size 0805 l5 12 nh chip inductor l6 33 nh chip inductor l7 56 nh chip inductor l8 15 nh chip inductor l10 10 nh chip inductor u1 cv110-2a wj converter all components are of size 0603 unless otherwise specified.
specifications and information are subject to change wit hout notice wj communications, inc ? phone 1-800-wj1-4401 ? fax: 408-577-6621 ? e-mail: sales@wj.com ? web site: www.wj.com page 4 of 4 april 2007 cv110 - 2a cellular-band high linearity downconverter mechanical information this package is lead-free/rohs-compliant. the plat ing material on the pins is annealed matte tin over copper. it is compatible with both lead-free (maximum 260 c reflow temperature) and leaded (maximum 245 c reflow temperature) soldering processes. outline drawing mounting configuration / land pattern product marking the component will be lasermarked with a ?cv110-2af? product label with an alphanumeric lot code on the top surface of the package. tape and reel specifications for this part will be located on the website in the ?application notes? section. esd / msl information esd rating: class 1b value: passes 500v to <1000v test: human body model (hbm) standard: jedec standard jesd22-a114 esd rating: class iii value: passes 500v to <1000v test: charged device model (cdm) standard: jedec standard jesd22-c101 msl rating: level 2 at +260 c convection reflow standard: jedec standard j-std-020 functional pin layout pin function pin function 1 rf amp output 15 lo amp input 2 gnd 16 gnd 3 n/c 17 lo amp bias 4 gnd 18 gnd 5 if feedthru port 19 n/c or gnd 6 gnd 20 gnd 7 mixer rf / if port 21 if amp output/bias 8 gnd 22 gnd 9 n/c or gnd 23 if amp input 10 gnd 24 gnd 11 mixer lo input 25 if feedthru port 12 gnd 26 gnd 13 lo amp output 27 rf amp input 14 gnd 28 gnd
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