d9 4 series 1 hz to 400 khz* low noise fixed f requency 4 - pole single power supply anti - aliasing low - pass filters 1 1784 chessie lane, ottawa, illinois 61350 ? tel:800/252 - 7074, 815/434 - 7800 ? fax:815/434 - 8176 e - mail: sales@freqdev.com ? web address: http://www.freqdev.com description: the d9 4 series of small 4 - pole fixed - frequency, precision active filters provide high performance linear active filtering in a compact package, with a broad range of corner frequencies and a choice of butterworth or bessel transfer functions. these filters are designed to work with up to 16 bit a/d converters. these fully self - contained units require no external components or adjustments. each model comes factory tuned to a user - specified corner frequency between 1 hz and 400 khz* and operate with low total harmonic distortion over a wide dynamic input voltage range from non - critical single +5vdc to +18vdc power supply. each filter has a built in internal +6vdc and - 6vdc power supplies to power the filter. features/benefits: ? low harmonic distor tion and wide signal ? to ? noise ratio to 16 bit resolution. ? available with single or differential inputs. ? available with dc coupled or ac coupled inputs. (the ac corner frequency is a single pole at 2 hz.) ? compact 1.5"l x 2.0"w x 0.4"h minimizes board spac e requirements. ? plug ? in ready ? to ? use, reducing engineering design and manufacturing cycle time. ? factory tuned, no external clocks or adjustments needed. ? available in butterworth or bessel transfer functions to meet a wide range of applications. ? require s a single +5v to +18v power supply to operate (the module generates 6 vdc internally to operate the filter). ? one to one offset input that works with your a/ds reference output to set the output of the filter in the center of your a/ds input range. ? ava ilable with built in gains from 0 db to 60 db. * bessel 1 hz to 200 khz applications ? anti ? alias filtering ? data acquisition systems ? communication systems and electronics ? medical electronics equipment and research ? aerospace, navigation and sonar appl ications ? sound and vibration testing ? acoustic and vibration analysis and control ? noise elimination ? signal reconstruction available low - pass models: d 9 4 l 4 b 4 - pole butterworth d 9 4 l 4 l 4 - pole bessel
d9 4 series 1 hz to 400 khz* low noise fixed f requency 4 - pole single power supply anti - aliasing low - pass filters 2 1784 chessie lane, ottawa, illinois 61350 ? tel:800/252 - 7074, 815/434 - 7800 ? fax:815/434 - 8176 e - mail: sales@freqdev.com ? web address: http://www.freqdev.com d9 4 l 4 b d9 4 l 4 l transfer fu nction 4 - pole butterworth 4 - pole bessel size 1.5? x 2.0? x 0.4? 1.5? x 2.0? x 0.4? range f c 1 . 0 hz to 400 khz 1 . 0 hz to 200 khz theoretical transfer characteristics appendix a page 7 appendix a page 2 passband ripple ( theoretical) 0.0 db 0. 0 db dc voltage gain (non - inverting) 0 0.1 db max. 0 0.05 db typ. 0 0.1 db max. 0 0.05 db typ. stopband attenuation rate 2 4 db/octave 21 db/octave cutoff frequency f c 1% max. f c 1% max. stability 0.01%/ c 0.01%/ c amplitude - 3 db - 3 db phase - 180 - 121 filter attenuation (theoretical) 0. 67 db 0.80 f c 1. 86 db 0.80 f c 3.01 db 1.00 f c 3.01 db 1.00 f c 3 0.0 db 2.37 f c 3 0.0 db 3 . 50 f c 4 0.0 db 3.16 f c 4 0.0 db 4 .7 2 f c amplitude accuracy (theoretical) 0 ? 0.8 f c 0.2 db max. 0 ? 0.8 f c 0.2 db max. 0.1 db typ. 0.1 db typ. 0.8 f c ? 1.0 f c 0.3 db max. 0.8 f c ? 1.0 f c 0.3 db max. 0.15 db typ. 0.15 db typ. (thd) total harmonic distortion @ 1 khz < - 100 db < - 100 db wide band noise (5 hz ? 2 mhz) < 200 vrms < 200 vrms sinad < - 100 db < - 100 db
d9 4 series specifications (25oc and vs + 5 v dc to + 18 v dc) pin - out and package dat a ordering information 3 1784 chessie lane, ottawa, illinois 61350 ? tel:800/252 - 7074, 815/434 - 7800 ? fax:815/434 - 8176 e - mail: sales@freqdev.com ? web address: http://www.freqdev.com analog input characteristics 1 impedance 1 m ? voltage range 6 v peak max. safe voltage 6 v analog output characteristics i mpedance 1 ? typ., 10 ? max. (closed loop) linear operating range 3 5v maximum current 2 5 ma offset voltage 3 5 vdc power supply (v) rated voltage + 5 vdc to + 18 vdc quiesce nt current ~110 ma temperature range operating 0oc to +70oc storage - 25oc to +85oc notes: 1. input and output signal voltage referenced to supply common. 2. output is short circuit protected to common. do not connect to vs. 3. any voltage appl ied to the offset pin appears at the output and an output offset. note that if, for instance, the offset pin is at 2 vdc the maximum linear operating range will be 3v not 5 v. this is because you cannot exceed +5v or - 5v linear operating range. any vol tage applied to the offset pin is low pass filtered to remove noise. 4. units operate with or without offset pin connected. 5. how to specify corner frequency. corner frequency is specified by attaching a three - digit frequency designator to the basic mode l number. corner frequencies can range from 1 . 0 0 hz to 4 00 khz. pin - out and package data 2 . 00 ? 1 . 50 ? 0 . 40? out + in - gnd + v os 0 . 1 " grid front view pins 0 . 025 " diameter bottom view gnd in + gnd out - ordering information transfer function input type output type b = butterworth d = differ ential d = differential l = bessel s = single s = single d9 4 l 4 bdas - 100 hz - 10db gain 0 to 60db input coupling - 3 db corner frequency a = ac coupled input e.g., 100 hz d = dc coupled input 10 .0 khz 75.2 k hz we hope the information given here will be helpful. the information is based on data and our best knowledge, and we consider the information to be true and accurate. please read all statements, recommendations or suggestions herein in conjunction with our conditions of sale, which apply, to all goods supplied by us. we assume no res ponsibility for the use of these statements, recommendations or suggestions, nor do we intend them as a recommendation for any use, which would infringe any patent or cop yright.
lo w-p ass 4-p ole appendix a butterw or th 7 1784 chessie lane, ottawa, il 61350 ? tel: 800/252-7074, 815/434-7800 ? fax: 815/434-8176 e-mail: sales@freqdev.com web address: http://www.freqdev.com (sec) nor maliz ed f requency(f/fc) amp (db) dela y (sec) nor maliz ed time (1/f sec) step response (v/v) theoretical t ransf er characteristics 1 frequenc y response dela y (nor maliz ed) step response 0.1 1.0 10.0 2 3 4 5 6 7 8 2 3 4 5 6 7 -100 -80 -60 -40 -20 0 0 1 2 3 4 5 -0.0 0.2 0.4 0.6 0.8 1.0 1.2 0.1 1.0 2 3 4 5 6 7 8 9 0.0 1.0 2.0 1.5 0.15 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.85 0.90 0.95 1.00 1.10 1.20 1.30 1.40 1.50 1.60 1.70 1.80 1.90 2.00 2.25 2.50 2.75 3.00 3.25 3.50 4.00 5.00 6.00 7.00 8.00 9.00 10.0 -62.3 -67.6 -72.2 -76.3 -80.0 -38.2 -41.0 -43.5 -48.2 -55.9 -22.3 -24.1 -28.2 -31.8 -35.1 -12.0 -14.3 -16.4 -18.5 -20.5 -2.21 -3.01 -4.97 -7.24 -9.62 -0.072 -0.243 -0.674 -1.047 -1.555 0.00 0.00 0.00 -0.00 -0.003 -0.017 0.00 -15.0 -30.1 -45.5 -61.4 -78.0 -95.7 -115 -136 -147 -158 -169 -180 -200 -217 -231 -242 -252 -260 -266 -272 -277 -282 -291 -299 -304 -309 -313 -317 -322 -330 -335 -339 -341 -343 -345 .012 .009 .007 .005 .004 .049 .041 .035 .027 .017 .134 .119 .091 .072 .059 .289 .241 .204 .175 .152 .612 .588 .513 .427 .350 .511 .558 .604 .619 .622 .416 .418 .423 .433 .449 .474 1. normaliz ed gr oup dela y: t h e a b o v e d e l a y d a t a i s n o r m a l i z e d t o a c o r n e r f r e q u e n c y o f 1 . 0 h z . t h e a c t u a l d e l a y i s t h e n o r m a l i z e d d e l a y d i v i d e d b y t h e a c t u a l c o r n e r f r e q u e n c y ( f c ) . actual delay = normalized delay actual corner frequency (fc) in hz f/fc (hz) amp (db) phase (deg) dela y nor maliz ed f requency(f/fc)
lo w-p ass 4-p ole appendix a bessel 2 1784 chessie lane, ottawa, il 61350 ? tel: 800/252-7074, 815/434-7800 ? fax: 815/434-8176 e-mail: sales@freqdev.com web address: http://www.freqdev.com nor maliz ed f requency(f/fc) amp (db) nor maliz ed time (1/f sec) dela y (sec) nor maliz ed time (1/f sec) step response (v/v) frequenc y response dela y (nor maliz ed) step response 0.1 1.0 10.0 2 3 4 5 6 7 8 2 3 4 5 6 7 -100 -80 -60 -40 -20 0 0.1 1.0 2 3 4 5 6 7 8 9 0.0 0.5 1.0 1.5 0.15 0 1 2 3 4 5 -0.0 -0.2 0.2 0.4 0.6 0.8 1.0 1.2 (sec) theoretical t ransf er characteristics 1 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.85 0.90 0.95 1.00 1.10 1.20 1.30 1.40 1.50 1.60 1.70 1.80 1.90 2.00 2.25 2.50 2.75 3.00 3.25 3.50 4.00 5.00 6.00 7.00 8.00 9.00 10.0 1. normaliz ed gr oup dela y: t h e a b o v e d e l a y d a t a i s n o r m a l i z e d t o a c o r n e r f r e q u e n c y o f 1 . 0 h z . t h e a c t u a l d e l a y i s t h e n o r m a l i z e d d e l a y d i v i d e d b y t h e a c t u a l c o r n e r f r e q u e n c y ( f c ) . actual delay = normalized delay actual corner frequency (fc) in hz f/fc (hz) amp (db) phase (deg) dela y 0.00 -12.1 -24.2 -36.3 -48.4 -60.6 -48.1 -53.4 -58.0 -62.0 -65.7 -25.1 -27.6 -30.0 -34.4 -41.9 -12.2 -13.4 -16.5 -19.5 -22.4 -6.37 -7.42 -8.54 -9.71 -10.9 -2.69 -3.01 -3.71 -4.51 -5.39 -1.02 -1.41 -1.86 -2.11 -2.40 0.00 -0.028 -0.111 -0.251 -0.448 -0.705 -315 -321 -326 -330 -333 -267 -275 -281 -291 -305 -212 -219 -235 -248 -259 -166 -177 -187 -195 -204 -115 -121 -133 -144 -156 -72.7 -84.8 -96.8 -103 -109 .021 .016 .012 .009 .008 .089 .076 .065 .049 .031 .211 .194 .158 .129 .107 .295 .280 .263 .246 .228 .332 .330 .325 .318 .308 .336 .336 .335 .334 .333 .336 .336 .336 .336 .336 .336
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