View SL2017_1905528.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

features n single chip full band solution, compatible with digital and analog transmissions n low noise rf input n high input signal handling to eliminate the requirement for front end agc n low phase noise local oscillator buffer optimised for low symbol rate applications n low radiation design n if agc amplifier with dual selectable outputs n esd protection. (normal esd handling procedures should be observed) ordering information SL2017/kg/mp1s (tubes) SL2017/kg/mp1t (tape and reel) the SL2017 is a fully integrated mixer with output agc, intended primarily for application in satellite tuners, where it downconverts the first high if from the outdoor unit to the second if for data demodulation. the device contains a low noise rf input amplifier and mixer functioning to 2.15ghz, an integrated low phase noise local oscillator buffer and an agc if output buffer amplifier. the if signal is available at one of two outputs selected by the if-op-sel input. the signal handling of the SL2017 is sufficient to greatly simplify or remove the requirement for input agc with appropriate image filtering in full band systems, or to remove the requirement for band limit filtering with appropriate agc in half band systems. applications n satellite tuners n communications systems fig.1 pin connections - top view mp16 v ee -rf rf inputb rf input v cc -rf v cc -lo lo lob v ee -lo agc control if output1 if output1b v cc -if v ee -if if output2 if output2b if op sel 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 SL2017 full band satellite tuner preliminary information ds4889 - 1.2 may 1998
2 SL2017 quick reference data characteristic units rf input noise figure 18 db maximum conversion gain 33 db minimum conversion gain -5 db if1 and if2 output gain match 2 db ip3 2t input referred at minimum conversion gain +3 dbm ip2 2t input referred at minimum conversion gain +17 dbm fig. 2 block diagram lo lob 6 7 15 14 if output1 if output1b 11 10 if output2 if output2b 16 agc control 9 if-op-sel 2 3 rf inputb rf input 4, 5, 13 1, 8, 12 v cc v ee
3 SL2017 the SL2017 is a downconverter mixer with an output agc amplifier, which when used with appropriate external varactor tuned oscillator performs the first if tuning function for a full band satellite receiver system. a block diagram is contained in fig. 2. in application the rf input of the device is interfaced through appropriate impedance matching to the first if signal, which is downlinked from the outdoor unit at typically 950-2150mhz. the rf input preamplifier of the device is designed for low noise figure and for low distortion so eliminating the requirement for rf agc. the preamplifier also provides gain to the mixer section and back isolation from the local oscillator section. the output of the preamplifier is fed to the mixer section where the rf signal is mixed with the local oscillator frequency, which is generated by an external oscillator. signals from the mixer are fed to the agc if amplifier, which gives an overall conversion gain programmable from -10 to +30db. the output of this stage can be switched to one of two outputs to facilitate if processing. functional description fig. 3 rf input matching network fig. 4 typical external vco application circuit 6.2nh to device 0.7pf fig. 5 lo buffer input impedance 0.5 0.2 1 0 +j0.2 +j0.5 +j1 +j2 +j5 2 5 ?5 ?2 ?1 ?0.5 ?0.2 frequency markers a t 1.3ghz, s 11 :z 0 = 50 x x x x normalised t o 50 1.8ghz, 2.3ghz , 2..8ghz x c20 47pf c22 47pf 1nf 5v 5v c4 100pf c5 100pf c10 1nf varactor line r1 2k7 r2 5k6 r3 270 c12 100pf 5v dv1 it379 c17 0.5pf c18 nc dv2 it379 r6 22k tr2 bfr182 c21 100pf c19 100nf c52 0.5pf l1 10nh 3 4 1 2 tl1 sniffer r11 22 rf rf b c23 2p2f c24 100pf rf input 3 vcc rf 4 lo 6 lo b 7 vcc lo 5 vee lo 8
4 SL2017 fig. 6 ip3 variation with gain setting (minimum) -20 -10 10 20 30 40 -5 -10 -15 -20 -25 ip3 (dbm) conversion gain (db) +5 applies for a constant if output level of -14dbm applies for a constant if output level of -14dbm -20 -10 10 20 30 40 -5 -10 -15 -20 +15 +10 +5 ip2 (dbm) fig. 7 ip2 variation with gain setting (minimum)
5 SL2017 fig. 8 variation of 1db gain compression (p1db) with gain setting (typical) -10 -20 -30 +10 +30 +20 x x x 0 -10 rf input level at p1db (dbm) gain setting (db) agc voltage (v) conversion gain (db) -20 -15 -10 -5 0 5 10 15 20 25 30 1.2 1.4 1.6 1.8 2 2.2 2.4 2.6 2.8 3 3.2 3.4 3.6 3.8 4 35 fig.9 gain variations with agc voltage (typical)
6 SL2017 rf inputs if output select input local oscillator inputs if outputs agc input fig. 10 input/output interface circuits v ref4 agc 12k control 2k v ref 1 300 300 rf inputs v ref 3 v cc if-op-sel output 50 50 outputb v ref 2 1k 1k tank tankb lo lob
7 SL2017 SL2017 evaluation board this board has been created to show the operation of the SL2017 mixer together with the sp5659 low phase noise synthesiser. schematics for the board are shown in figs. 11a and 11b. in a real system, the if output would be fed to a saw filter then onto either an fm demodulator such as the sl1466, or an iq downconverter such as the sl1710 or sl1711. control of the agc would be via a loop, which should be set up to ensure that the sl1466, sl1710 or other if chip receives the correct level for optimum performance. for full evaluation, 30v and 5v supplies are necessary, together with i 2 c data, rf signal sources and test equipment. supplies the board must be provided with the following supplies: a) 5v for the SL2017 and sp5659 and external oscillator and 30v for the varactor line. the supply connector is a 3 pin 0.1" pitch pin header. the centre pin of the connector is gnd. i 2 c bus connections b) the board is provided with an rj11 i 2 c bus connector which feeds directly to the sp5659 synthesiser. this connects to a standard 6-way connector cable which is supplied with the i 2 c/3-wire bus interface box. input and output connections the board is provided with the following connectors: a) rf i/p sma connector (sma1) which is ac coupled to the rf input of the SL2017. b) if out 1 (sma2) and if out 2 (sma5). these outputs may be selected by switching port p0 on the sp5659. the standard if output frequencies used are typically 402.75mhz or 479.5mhz. either if output may be connected directly to 50 w test equipment such as a spectrum analyser. details of programming the SL2017 are included below. programming of sp5659 synthesiser the sp5659 synthesiser is used to set the frequency of the vco. since high sided mixing is normally employed in satellite tuners, the vco should be set to the if above the wanted input channel. example: to mix a wanted channel at 1020.5mhz down to 479.5mhz. the synthesiser must be programmed to 1020.5mhz + 479.5mhz = 1500mhz. send i 2 c data c2 0b b8 93 40 to the sp5659. see table 1 for example i 2 c codes. c2 is the address byte (byte 1). 0b b8 is the programmable divider information (bytes 2 and 3). (i.e. 1500mhz / 500khz = 3000 = 0bb8hex) 93 is the programmable and reference divider information (byte 4). this will enable the prescaler and program the reference divider to a divide by 16 mode giving a 250khz phase comparator frequency with a 500khz step size when a 4mhz crystal is used. 40 is charge pump and port control data (byte 5). the code 40 will set the charge pump current to 260ua. all ports will be switched off. if it is required to use the sp5659 (for vco < 2ghz) with the prescaler disabled it is recommended that data is initially sent to enable the prescaler. this will avoid a potential 'lock out' situation arising when the lo frequency is greater than 2ghz. links and switches the board is provided with the following: agc select switch this switches between programmable control of the SL2017 agc, via port p1 of the sp5659, or direct control via the pin tp1, external agc voltage. in normal application , the agc will be controlled via a loop, such that the if chip which follows is fed with the desired input level.
8 SL2017 required vco byte 1 byte2 byte 3 byte 4 byte 5 frequency (mhz) address prog divider prog divider prog divider charge pump 8 msb's 8 lsb's /reference and port divider control 1500 c2 0b b8 93 40 1600 c2 0c 80 93 40 1700 c2 0d 48 93 40 1800 c2 0e 10 93 40 1900 c2 0e d8 93 40 2000 c2 0f a0 93 40 2100 c2 10 68 93 40 2200 c2 11 30 93 40 2300 c2 11 f8 93 40 2400 c2 12 c0 93 40 bottom of band c2 xx xx 93 11 top of band c2 xx xx 93 10 codes above are for fcomp = 250khz, prescaler enabled, giving fstep = 500khz. x = don't care table 1. example i 2 c hex codes for sp5659 synthesiser switching of SL2017 if outputs port p0 is used to select the if ouputs. when port p0 is off, if output 1 is selected. when port p0 is on, if output 2 is selected. switching of SL2017 agc port p1 is used to program the agc gain. when port p1 is off, agc is set to 4v (minimum gain). when port p1 is on, the agc is set to 1v (maximum gain). SL2017 operation the SL2017 is a downconverter mixer with an agc amplifier, which when used with appropriate external varactor tuned oscillator performs the first if tuning function for a full band satellite receiver system. in application the rf input of the device is interfaced through appropriate impedance matching to the first if signal, which is down linked from the outdoor unit at typically 950- 2150mhz. the rf input preamplifier of the device is designed for low noise figure and for low distortion so eliminating the requirement for rf agc. the preamplifier also provides gain to the mixer section and back isolation from the local oscillator signal. the output of the preamplifier is fed to the mixer section where the rf signal is mixed with the local oscillator frequency. signals from the mixer are then fed to the agc if amplifier, which gives an overall conversion gain programmable from -10 to +30 db. the output of this stage can be switched to one of two outputs to facilitate if processing. the SL2017 will mix an rf input signal from 950mhz - 2150mhz and produce an if signal typically at 402.75mhz or 479.5mhz. the device has a number of features, which may be either programmable via a synthesiser and operated as part of a dynamic agc loop, or hardwired into a fixed mode. there are a variety of parameters which can be measured using this evaluation board.
9 SL2017 measurement of phase noise. this is best measured by looking at the if output of the SL2017. the if should be fed to a spectrum analyser, where it can be interpreted. there are two common methods of doing this: a) using phase noise analysis software (such a hp85671a phase noise program) b) direct measurement of the noise floor at the chosen offset frequency, and conversion to a dbc/hz figure. since method a) will depend on the software used, a description of method b) will be given only. to measure phase noise at 10khz offset: a) tune the centre frequency of the spectrum analyser to the if - e.g. 479.5mhz b) set the span initially wide (10mhz or greater). gradually reduce this until it is set to 50khz or less, taking care to ensure that the centre frequency of the display matches the if peak. c) perform a peak search d) set marker delta to 10khz e) set video averaging on to ensure that a representative measurement of the noise floor at the chosen offset frequency is made. f) record the level of noise at the 10khz offset compared to the peak if level (in dbc). measurement of conversion gain (from a 50 w source) a) connect an rf signal generator to the rf input to the SL2017. b) connect an if output to a spectrum analyser. c) feed the SL2017 with the appropriate signal level, depending on agc setting, required output, etc. d) note the relative difference in the input and if level in db. this is the conversion gain of the device. for increased accuracy, the input signal level should also be checked with a spectrum analyser, since any level measurement errors that exist within the analyser will then be relative, rather than literal. the agc voltage may be varied and conversion gain measured at different agc voltages. care must be taken to ensure that the lo is stable, since any instability will reduce the averaged peak lo value, thus giving a falsely low phase noise reading. g) convert the measured reading to a 1hz bandwidth. e.g. a measured phase noise of -50dbc/1khz bandwidth (rbw of 1khz) corresponds to -80dbc/hz. since noise floor must be reduced by the ratio of the two bandwidths i.e. 10 log 1khz/1hz = 30db.
10 SL2017 e) the difference in level in db between the fundamentals and the 3rd order products is the im3 of the device. f) ip3 may be calculated from the above reading as follows: ip3 = rf input level + im3/2. this level is usually referred to the input. e.g. assuming a measured im3 of 44db, and with an input level of -19dbm, ip3 = 44/2 + -19dbm = +3dbm in a 50 w system, this may be converted to dbuv by adding 107 to the value calculated since 0dbm = 107db m v. i.e. +3dbm = 110dbuv. this is known as the input referred ip3 of the device. if you experience any difficulties with this board, or require further help, please contact robert marsh on 01793 518234 or fred herman on 01793 518423. the fax number is 01793 518411. the in-band ones are listed below: fd = flo - (2 x f1 - f2) fc = flo - (2 x f2 - f1) fd = 1430mhz - (2 x 950mhz - 951mhz) = 481mhz fc = 1430mhz - (2 x 951mhz - 950mhz) = 478mhz fa fb fc fd fundamentals 3rd order product 3rd order product measurement of im3 and ip3 a) input two signal tones from rf generators. the level of these should be adjusted so that the device sees an input signal level of -19dbm from each tone. program the local oscillator so that both tones are mixed down to the if (approx). b) adjust the agc so that the device gives an overall conversion gain of +5db. c) connect a spectrum analyser to the selected if output of the device. d) measure the relative levels of the down converter signals and the 3rd order products (see diag overleaf). two input signals are used: f1 = 950mhz f2 = 951mhz the local oscillator flo is tuned to 1430mhz. this gives the following at the if output: fa = 1430mhz - 950mhz = 480mhz fb = 1430mhz - 951mhz = 479mhz mixing products are also produced in the front end. these are then downconverted by the mixer.
11 SL2017 fig. 11a evaluation board schematic pll section 1 2 3 4 5 p3 7 p2 8 p1 9 p0 10 adc 11 vcc 12 13 14 vee 15 16 6 rf input rf input xtal charge pump drive output sda scl ref/comp address i2c bus interface programmable divider phase comp ic2 sp5659 c32 68pf r7 13k t1 bcw31 r8 22k 1 2 3 j1 power connector 5v r9 16k r10 47k c39 2n2f c41 4u7f c36 100pf c33 100nf +5v +30v c34 100nf 5v varactor line rf rf b r16 10k if op sel r13 220r r15 1k r14 4k agc c31 15nf sda5 3 5v0 4 gnd 5 scl5 6 j3 i2c bus c38 100pf c37 100pf c30 18pf x1 4mhz gnd
12 SL2017 fig. 11b evaluation board schematic SL2017 section c20 47pf c22 47pf sma2 if out 1 5v c1 1nf sma1 rf input c9 1nf 5v 5v c4 100pf c5 100pf c6 100pf c8 1nf sma5 if out 2b c10 1nf c13 1nf varactor line r1 2k7 r2 5k6 r3 270 c12 100pf 5v dv1 it379 c17 0.5pf c18 nc dv2 it379 r6 22k tr2 bfr182 c21 100pf c19 100nf c52 0.5pf l1 10nh 3 4 1 2 tl1 sniffer r11 22 1 2 tp1 ext agc voltage c14 1nf r20 4k7 5v s1 sw spdt ifout 1 ifout 2 rf rf b c23 2p2f c24 100pf vee rf 1 rf input b 2 rf input 3 vcc rf 4 lo 6 lo b 7 if output 2b 10 if output 2 11 veeif 12 vccif 13 if output 1b 14 if output 1 15 agc control 16 vcc lo 5 vee lo 8 if op sel 9 note: differential signals are shown as thick lines ic1 SL2017s2 c7 1nf c2 1nf sma3 ifout1b sma4 ifout2
13 SL2017 electrical characteristics these characteristics are guaranteed by either production test or design. they apply within the specified ambient temperature and supply voltage unless otherwise stated. t amb = -20 c to + 80 c, v cc = + 4.75v to 525v. if = 403.25mhz or 479.5mhz; if bandwidth up to 54mhz maximum. rf input frequency = 950mhz - 2150mhz. characteristic value min typ max units conditions supply current, i cc 4,5,13 80 115 ma rf input noise figure 2,3 18 db @ t amb = 27 c. at maximum gain variation of noise figure with 1 db/db agc setting conversion gain agc bandwidth 100khz minimum agc gain -15 -5 db agc = 4.0v maximum agc gain 25 33 db agc = 1.0v agc = self bias (2.4v) gain inband ripple -0.25 +0.25 db channel bandwidth 27mhz gain variation across rf input -2 +2 db range gain imbalance between if 10,11 -2 +2 db outputs 14,15 rf input impedance, single 2,3 50 w @ t amb = 27 c ended rf input return loss 2,3 8 12 db input unmatched @ t amb = 27 c rf input ip2 2,3 12 14 dbm see note 2 rf input ip3 2,3 -1 1 dbm see note 2 rf input ip3 variation with gain see fig. 6 input referred 1db gain see fig. 8 compression two tone im2 distortions with -31 -33 dbc see note 2 two tone im3 distortions -36 -40 dbc see note 2 lo input drive level 6,7 -10 0 dbm from 1300 - 2700mhz lo input impedance 6,7 w see smith chart fig. 5 pin
14 SL2017 lo leakage to rf input 2,3,6,7 -20 dbr relative to single ended input lo drive level lo leakage to if outputs 6,7,10,11 -10 dbm maximum conversion gain 14,15 agc gain control slope variation 16 monotonic from v ee to v cc. see fig. 9 agc control input current 16 -250 250 m a output select low voltage 9 0.7 v o/p 2 enabled, o/p 1 disabled output select high voltage 9 v cc -0.7 v o/p 1 enabled, o/p 2 disabled output select low current 9 -50 m a output select high current 9 200 m a if output 1 & 2 10,11, output in enabled and disabled state 14,15 output impedance 50 w single ended return loss 12 db if output 1 to 2 isolation 10,11 30 db 14,15 characteristic value min typ max units conditions pin electrical characteristics these characteristics are guaranteed by either production test or design. they apply within the specified ambient temperature and supply voltage unless otherwise stated. t amb = -20 c to + 80 c, v cc = + 4.75v to 525v. if = 403.25mhz or 479.5mhz; if bandwidth up to 54mhz maximum. rf input frequency = 950mhz -2150mhz. notes: 1. all dbm units refer to a 50 w system 2. applies for any two carriers within band at -19dbm, and with agc set for +5db conversion gain.
15 SL2017 absolute maximum ratings all voltages are referred to v ee = 0v (pins 1,8,12) supply voltages v cc 4,5,13 -0.3 7 v transient rf input voltage 2,3 2.5 vp-p rf input dc offset 2,3 -0.3 v cc +0.3 v lo input dc offset 6,7 -0.3 v cc +0.3 v if-op-sel input dc offset 9 -0.3 v cc +0.3 if outputs 1 and 2 dc offset 10, 11 -0.3 v cc +0.3 v 14, 15 agc control input dc offset 16 -0.3 v cc +0.3 v storage temperature -55 +150 c junction temperature +150 c mp16 thermal resistance chip to ambient 111 c/w chip to case 41 c/w power consumption at v cc =5.25v 580 mw esd protection all 1.75 kv mil std 883 latest revision method 3015 cat 1. parameter value min max units conditions pin

m mitel (design) and st-bus are registered trademarks of mitel corporation mitel semiconductor is an iso 9001 registered company copyright 1999 mitel corporation all rights reserved printed in canada technical documen t a tion - n o t for resale world headquarters - canada tel: +1 (613) 592 2122 fax: +1 (613) 592 6909 north america asia/paci?c europe, middle east, tel: +1 (770) 486 0194 tel: +65 333 6193 and africa (emea) fax: +1 (770) 631 8213 fax: +65 333 6192 tel: +44 (0) 1793 518528 fax: +44 (0) 1793 518581 http://www.mitelsemi.com information relating to products and services furnished herein by mitel corporation or its subsidiaries (collectively mitel) is believed to be reliable. however, mitel assumes no liability for errors that may appear in this publication, or for liability otherwise arising from the application or use of any such information, product or service or for any infringement of patents or other intellectual property rights owned by third parties which may result from such application or use. neither the supply of such information or purchase of product or service conveys any license, either express or implied, under patents or other intellectual property rights owned by mitel or licensed from third parties by mitel, whatsoever. purchasers of products are also hereby noti?ed that the use of product in certain ways or in combination with mitel, or non-mitel furnished goods or services may infringe patents or other intellectual property rights owned by mitel. this publication is issued to provide information only and (unless agreed by mitel in writing) may not be used, applied or reproduced for any purpose nor form part of any order or contract nor to be regarded as a representation relating to the products or services concerned. the products, their speci?cations, services and other information appearing in this publication are subject to change by mitel without notice. no warranty or guarantee express or implied is made regarding the capability, performance or suitability of any product or service. information concerning possible methods of use is provided as a guide only and does not constitute any guarantee that such methods of use will be satisfactory in a speci?c piece of equipment. it is the users responsibility to fully determine the performance and suitability of any equipment using such information and to ensure that any publication or data used is up to date and has not been superseded. manufacturing does not necessarily include testing of all functions or parameters. these products are not suitable for use in any medical products whose failure to perform may result in signi?cant injury or death to the user. all products and materials are sold and services provided subject to mitels conditions of sale which are available on request.

▲Up To Search▲

Price & Availability of SL2017

	To Download SL2017 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .