selectable high frequency lp/bp filter preliminary data sheet 5/2004 mshfs1/mshfs2/mshfs3/mshfs4/mshfs5/MSHFS6 description the selectable high frequency lowpass/ bandpass filter ic is a cmos chip that can be configured for either a lowpass or a band- pass filter. the lowpass response can be a 6 pole butterworth, elliptic or bessel filter. the band pass response can be a six pole full, third or sixth octave bandpass filter. the device uses switched-capacitor filters and no external components (except for decoupling capacitors) are required, only an external clock is needed. a four input multiplexor and externally select- able gain setting pin, along with a power down and clock to corner ratio select pin are in- cluded in the 16 pin version. an 8 pin version is also available for compact pc board lay- outs. mshfs3, mshfs4 and MSHFS6 are lower current, lower frequency versions. features six filter types in one package no external components switched-capacitor filters high frequency operation input multiplexor adjustable gain 0, 10 or 20 db small package size low cost on chip power save pin ansi compatible bandpass applications spectrum analyzers general purpose systems portable systems anti-alias filters reconstruction filters telecommunications tracking filters harmonic analysis noise analysis data communication wireless applications lowpass responses bandpass responses web site ?www.mix-sig.com? ? 2004 mixed signal integration 1 free datasheet http:///
mshfs1/mshfs2/mshfs3/mshfs4/mshfs5/MSHFS6 selectable high frequency lp/bp filter preliminary data sheet 5/2004 electrical characteristics_______ (vdd = +5.0v, t = 20 c) o note 1: sample rate ratio is 2x clock to corner ratio. parameter symbol conditions min typ max units dc specifications operating voltage vdd 4.0 5.0 5.5 v supply current idd mshfs1, mshfs2, mshfs5 24 30 ma supply current idd mshfs3, mshfs4, MSHFS6 9 12 ma supply current in power down mode idd 200 ua ac specifications gain av -0.5 0 0.5 db noise en to 1/2 sample 350 uvrms distortion thd a weighted -61 db signal swing 1 khz 3.5 4.0 v p-p input impedance zin 1.0 mohm output drive io 400 ua output impedance zo 500 ohm output capacitive load 20 pf clock to corner mshfs5, MSHFS6 12.5 clock to corner mshfs1, mshfs3 6.25 clock to corner mshfs2, mshfs4, fo=1 12.5 clock to corner mshfs2, mshfs4, fo=0 6.25 center frequency range fo mshfs1, mshfs2, mshfs5 0.00001 3 mhz center frequency range fo mshfs3, mshfs4, MSHFS6 0.00001 1 mhz ripple elliptic lowpass 0.2 db full octave 0.2 db third octave 0.2 db sixth octave 0.2 db stop band rejection elliptic lowpass 70 db bessel lowpass 60 db 40 db bandwidth full octave normalized fo 0.3 3 third octave normalized fo 0.6 1.67 sixth octave normalized fo 0.76 1.32 bandpass q full octave q q 1.5 third octave q 4.5 sixth octave q 9 web site ?www.mix-sig.com? ? 2004 mixed signal integration 2
type lowpass bandpass 0 butterworth full octave 1 bessel third octave 2 elliptic sixth octave the filter type is selected using the two filter se- lect pins, type and fsel, fsel is a cmos level pin that selects lowpass or bandpass (lowpass = 0, bandpass = 1). type is a tertiary control pin that selects the filter response. state 0 is vss, state 1 is gnd and state 2 is vdd. mshfs1/mshfs2/mshfs3/mshfs4/mshfs5/MSHFS6 selectable high frequency lp/bp filter preliminary data sheet 5/2004 pin description________________ 1. type filter response select pin. 2. s2 input multiplexor select pin 3. clk sine wave clock input 4. g gain select pin 5. vdd positive power supply,typically +2.5 volts for split supply, +5.0 volts for single supply 6. pd power down pin, cmos level, hi = power down 7, vss negative power supply,typically -2.5 volts for split supply, 0 volts for single supply 8. f0 clock to corner select pin 9. gnd gnd pin, ov for split supplies +2.5 volts typical for single supply 10. in1 input 1, select code 00 11. in2 input 2, select code 01 12. in3 input 3, select code 10 13. in4 input 4, select code 11 14. fsel selects filter o = low pass, 1 = bandpass 15. out filter output 16. s1 input multiplexor select pin pin configuration filter selection _______________ gain and frequency selection the gain control pin g is a tertiary control pin where state 0 is vss, state 1 is gnd level and state 2 is vdd. g gain 0 odb 1 10db 2 20db the frequency control pin f0 is a cmos level pin where high is clock to corner of 12.5 to 1 (25 to 1 for bessel) and low is clock to corner of 6.25 to 1 (12.5 to 1 for bessel). the sample rate ratio is twice the clock to corner ratio (double sampling). fsel in out gnd type vss clk 5 vdd 16 15 14 13 12 11 10 9 type s1 s2 out clk fsel g in4 vdd in3 pd in2 vss in1 f0 gnd 8 pin 16 pin web site ?www.mix-sig.com? ? 2004 mixed signal integration 3
mshfs1/mshfs2/mshfs3/mshfs4/mshfs5/MSHFS6 selectable high frequency lp/bpfilter preliminary data sheet 5/2004 block diagram________________ scf section one 4 input mux filter and clock select (type, fsel, fo) scf section buffer adjustable gain in1 in2 in3 in4 g out o s1 s2 input selection the input is selected using the input select pins s1 and s2. s2 s1 input 0 0 1 0 1 2 1 0 3 1 1 4 digital levels all the clock and control pins (except fsel, clk and g) are referenced between gnd and vdd. in single supply applications, the digital levels should be cmos levels from vss to vdd. in dual supply systems, the digital levels should be cmos levels from gnd to vdd. absolute maximum ratings power supply voltage +6v storage temperature -60 to +150 c operating temperature 0 to 70 c ordering information________ part number package operating temperature 0 - 70 c 0 - 70 c 0 - 70 c 0 - 70 c 0 - 70 c 0 - 70 c 0 - 70 c 0 - 70 c 0 - 70 c 0 - 70 c 0 - 70 c 0 - 70 c mshfs1p 8 pin dip mshfs2p 16 pin dip mshfs3p mshfs4p 16 pin dip mshfs5p 8 pin dip MSHFS6p 8 pin dip mshfs1s mshfs2s 16 pin soic mshfs3s 8 pin soic mshfs4s 16 pin soic mshfs5s 8 pin soic MSHFS6s 8 pin soic 8 pin dip 8 pin soic web site ?www.mix-sig.com? ? 2004 mixed signal integration 4
mshfs1/mshfs2/mshfs3/mshfs4/mshfs5/MSHFS6 selectable high frequency lp/bpfilter preliminary data sheet 5/2004 web site ?www.mix-sig.com? ? 2004 mixed signal integration 5 application schematics________________ mux part - single supply operation single part - single supply operation
selectable high frequency lp/bp filter preliminary data sheet 5/2004 web site ?www.mix-sig.com? ? 2004 mixed signal integration 6 notes mshfs1/mshfs2/mshfs3/mshfs4/mshfs5/MSHFS6
mshfs1/mshfs2/mshfs3/mshfs4/mshfs5/MSHFS6 selectable high frequency lp/bp filter preliminary data sheet 5/2004 web site ?www.mix-sig.com? ? 2004 mixed signal integration 7 standard products msgeq5a five band graphic equalizer msgeq7 seven band graphic equalizer mshfs1-6 selectable high frequency lp/bp filter msfs1-6 selectable lowpass/bandpass filter mscahf selectable high frequency active lowpass/bandpass filter msu1f1-4, msu2f1 resistor programmable universal active filter msu1hf1-4, msu2hf1 high frequency resistor programmable universal active filter mselp switched capacitor elliptic lowpass filter with op amps msnblp switched capacitor butterworth lowpass filter msle/b/c5l/m switched capacitor general purpose lowpass filter ms2lfs dual selectable low voltage lowpass/bandpass filter mslfs selectable low voltage lowpass/bandpass filter mshn1-6 selectable high pass/notch filter msraaf resistor programmable active audio filter msrahf resistor programmable active high frequency filter msdet tone detector msepaf electrically programmable active filter mscbt communications baseband transceiver mslv14 14 mhz video lowpass filter
selectable high frequency lp/bp filter preliminary data sheet 5/2004 web site ?www.mix-sig.com? ? 2004 mixed signal integration 8 mixed signal integration 2157f o'toole avenue san jose, california 95131-1332 phone: (408)-434-6305 fax: (408)-434-6417 in mississippi, alabama, georgia south carolina, north carolina, and tennessee contact: adeptronics 9694 madison boulevard suite a-14 madison, alabama 35758 telephone: 256-772-1922 facsimile: 256-772-0323 in arizona, utah, colorado, montana, in indiana, kentucky, ohio, michigan, in taiwan contact: wyoming, idaho, new mexico and and western pennsylvania contact: southern nevada contact: nelco electronix ccr electronics, inc. maxtek technology co., ltd. 6970 s. holly circle, #205 825 woodfield crossing blvd 5f, no. 13-20, sec. 6, min chian e road, nei hu centennial, co 80112 suite 100 taipei, 114 r.o.c. telephone: 720-493-9630 indianapolis, indiana 46240-2495 telephone: 886-2-2794-6060 facsimile: 720-493-9631 telephone: 317-469-4855 facsimile: 886-2-2879-8922 in hong kong and the people's in korea contact: in singapore, indonesia and republic of china contact: malaysia contact: alphatron h. b. corp. exer technologies (s) pte ltd 2l, cooke street/f #1409, seocho world officetel, 45 kaki bukit industrial terrace g/f, hung hom 1355-3, seocho-dong, seocho-ku, singapore 416125 kowloon bay, hong kong seoul, korea 137-070 telephone: (65)-6-747-9669 telephone: 852-2303-1290 telephone: (02)3472-3450 facsimile: (65)-6-749-9669 facsimile: 852-2900-3616 facsimile: (02)3472-3458 in israel contact: in the united kingdom contact: phoenix technologies ltd. electronics 2000 ltd. 3 gavish st. grafton house kfar-saba, 44424 grafton street israel high wycombe telephone: 09-764-4800 bucks hp12 3aj facsimile: 09-764-4801 telephone:00-44-1494-444044 facsimile: 00-44-1494-470499 mshfs1/mshfs2/mshfs3/mshfs4/mshfs5/MSHFS6
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