D61 Series 32-Pin DIP 4 - Pole Filters 0.02 Hz to 1.00 Hz Fixed Frequency Description The D61 Series of small 4-pole fixed-frequency, precision active filters provide high performance linear active filtering in a compact 32-pin DIP package, with a broad range of corner frequencies and a choice of transfer functions. Individual D61 filters can serve in low-pass or highpass applications or be combined to create custom band-pass or band reject filters. These fully selfcontained units require no external components or adjustments. Each model comes factory tuned to a user-specified corner frequency between 0.02 Hz and 1.00 Hz and operate with low total harmonic distortion over a wide dynamic input voltage range from non-critical +/-5V to +/-18V power supplies. Features/Benefits: • Low harmonic distortion and wide signal-to-noise ratio • Compact 1.8"L x 0.8"W x 0.5"H minimizes board space requirements. • Plug-in ready-to-use, reducing engineering design and manufacturing cycle time. • Factory tuned, no external clocks or adjustments needed • Broad range of transfer characteristics and corner frequencies to meet a wide range of applications. Applications • Anti-alias filtering • Data acquisition systems • Communication systems and electronics • Medical electronics equipment and research • Aerospace, navigation and sonar applications • Sound and vibration testing Available Low-Pass Models: . . . . . . . . . . .Page D61L4B D61L4L 4-pole Butterworth . . . . . . . . . . . . . . . .2 4-pole Bessel . . . . . . . . . . . . . . . . . . . .2 Available High-Pass Models: . . . . . . . . . . . . . . . D61H4B 4-pole Butterworth . . . . . . . . . . . . . . . .2 General Specifications: Pin-out/package data & ordering information . . . .3 • Acoustic and vibration analysis and control • Noise elimination • Signal reconstruction 25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839 e-mail: [email protected] • Web Address: http://www.freqdev.com D61 Series 4-Pole Low-Pass Filters Fixed Frequency Model D61L4B D61L4L Model Product Specifications Low-Pass Low-Pass Transfer Function 4-Pole, Butterworth 4-Pole, Bessel Transfer Function 4-Pole, Butterworth Size 1.8” x 0.8” x 0.5” 1.8” x 0.8” x 0.5” Size 1.8” x 0.8” x 0.5” Range fc D61 0.02 Hz to 1.00 Hz 0.02 Hz to 1.00 Hz Range fc D61 0.02 Hz to 1.00 Hz Theoretical Transfer Characteristics Appendix A Page 7 Appendix A Page 2 Theoretical Transfer Characteristics Appendix A Page 27 Passband Ripple 0.0 dB 0.0 dB Passband Ripple 0.0 dB High-Pass (theoretical) DC Voltage Gain (non-inverting) (theoretical) 0 ± 0.1 dB max. 0 ± 0.05 dB typ. 0 ± 0.1 dB max. 0 ± 0.05 dB typ. Voltage Gain (non-inverting) 120 kHz Small Signal Bandwidth (-6dB) 1 MHz Stopband Attenuation Rate 24 dB/octave ± 2% max. Cutoff Frequency Stability Amplitude Phase fc ± 0.01% /°C -3dB -180° 0.80 fc 1.00 fc 3.50 fc 4.72 fc Filter Attenuation 40 dB 30 dB 3.01 dB 0.02 dB 24 dB/octave Cutoff Frequency Stability Amplitude Phase fc ± 0.01% /°C -3dB -180° Filter Attenuation 0.67 dB 3.01 dB 30.0 dB 40.0 dB 0.80 fc 1.00 fc 2.37 fc 3.16 fc 0 - 0.8 fc ± 2° max. ± 1° typ. ± 3° max. ± 1.5° typ. 0 - fc ± 2° max. ± 1° typ. ± 0.2 dB max. ± 0.1 dB typ. 0.8 fc - 1.0 fc ± 0.3 dB max. ± 0.15 dB typ. 0 - fc ± 0.2 dB max. ± 0.1 dB typ. 200 mVrms typ. 200 mVrms typ. Wide Band Noise 50 mVrms typ. 50 mVrms typ. Narrow Band Noise FMA-01A FMA-01A Filter Mounting Assembly Phase Match1 0.8 fc - 1.0 fc Amplitude Accuracy (theoretical) Wide Band Noise (5 Hz - 2 MHz) Narrow Band Noise (20 Hz - 100 kHz) Filter Mounting Assembly 0 - 0.8 fc 24 dB/octave ± 2% max. fc ± 0.01% /°C -3dB -121° 1.86 dB 3.01 dB 30.0 dB 40.0 dB 0 ± 0.2 dB to 100 kHz 0 ± 0.5 dB to 120 kHz Power Bandwidth Stopband Attenuation Rate (theoretical) D61H4B (theoretical) Phase Match1 Amplitude Accuracy (theoretical) (5 Hz - 2 MHz) (20 Hz - 100 kHz) 0 - 100 kHz ± 2% max. 0.31 fc 0.42 fc 1.00 fc 2.00 fc ± 3° max. ± 1.5° typ. 1.0 - 1.25 fc ± 0.30 dB max. ± 0.15 dB typ. 1.25 fc -100 kHz ± 0.20 dB max. ± 0.10 dB typ. 400 mVrms typ. 100 mVrms typ. FMA-01A 1. Unit to unit match for the same transfer function, set to the same frequency and operating configuration, and from the same manufacturing lot. 2 25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839 e-mail: [email protected] • Web Address: http://www.freqdev.com D61 Series Pin-Out and Package Data Ordering Information Specification (25°C and Vs ± 15 Vdc) 1 Analog Input Characteristics Impedance 10 kW min. Voltage Range ± 10 Vpeak Max. Safe Voltage ± Vs 0.80 Side View 0.025 dia. Analog Output Characteristics Impedance(Closed Loop) 1 W typ. 10 W max. Linear Operating Range ± 10 V 2 Maximum Current ± 2 mA 3 02 mV typ. Offset Voltage 10 mV max. Offset Temp. Coeff. 50 mV / °C Temperature Operating Storage 1.80 Front View 0.50 0.15 (min) 0.80 0.70 OUT -VS OS4 +VS Bottom View GND - 1.55 1.65 0.45 0.55 0.15 15 Vdc 5 to ± 18 Vdc 18 Vdc 12.5 mA typ. 20 mA max. 0.00 ± ± ± ± ± IN 0.10 0.00 1.80 Power Supply (±V) Rated Voltage Operating Range Maximum Safe Voltage Quiescent Current D61 All dimensions are in inches All case dimensions ± 0.01" Filter Mounting Assembly-See FMA-01A 0 to + 70 °C - 25 to + 85 °C Ordering Information 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. Adjustable to zero. Filter Type Transfer Function L - Low Pass H - High Pass B - Butterworth L - Bessel DC Offset Adjustment ± Vs D61L4B-0.05 Hz Do not connect if trim is not required. 20 k W (Cermet) 5 - 3 dB Corner Frequency OS 4. Units operate with or without offset pin connected. - Vs e.g., 0.05 Hz 0.85 Hz 1.00 Hz 5. How to Specify Corner Frequency: Corner frequencies are specified by attaching a three digit frequency designator to the basic model number. Corner frequencies can range from 0.02 Hz to 1.00 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 responsibility 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 copyright. IN-00D61-00 3 25 Locust St, Haverhill, Massachusetts 01830 • Tel: 800/252-7074, 978/374-0761 • FAX: 978/521-1839 e-mail: [email protected] • Web Address: http://www.freqdev.com Low-Pass 4-Pole Appendix A Bessel Theoretical Transfer Characteristics 1 f/fc Amp Phase Delay (Hz) (dB) (deg) (sec) 0.00 0.00 0.00 .336 0.10 -0.028 -12.1 .336 0.20 -0.111 -24.2 .336 0.30 -0.251 -36.3 .336 0.40 -0.448 -48.4 .336 0.50 -0.705 -60.6 .336 0.60 -1.02 -72.7 .336 0.70 -1.41 -84.8 .336 0.80 -1.86 -96.8 .335 0.85 -2.11 -103 .334 0.90 -2.40 -109 .333 0.95 -2.69 -115 .332 1.00 -3.01 -121 .330 1.10 -3.71 -133 .325 1.20 -4.51 -144 .318 1.30 -5.39 -156 .308 -166 1.40 -6.37 .295 -177 1.50 -7.42 .280 -187 1.60 -8.54 .263 -195 1.70 -9.71 .246 -204 1.80 -10.9 .228 1.90 -12.2 -212 .211 2.00 -13.4 -219 .194 2.25 -16.5 -235 .158 2.50 -19.5 -248 .129 2.75 -22.4 -259 .107 -267 3.00 -25.1 .089 -275 3.25 -27.6 .076 -281 3.50 -30.0 .065 -291 4.00 -34.4 .049 -305 5.00 -41.9 .031 6.00 -315 .021 -48.1 7.00 -321 .016 -53.4 8.00 -326 .012 -58.0 9.00 -330 .009 -62.0 10.0 -333 .008 -65.7 Frequency Response Amp (dB) 0 -40 -60 -80 -100 0.1 2 3 4 5 6 78 1.0 2 3 4 5 6 7 10.0 Normalized Frequency(f/fc) Delay (Normalized) Delay (sec) 1.0 0.5 0.0 0.1 0.15 2 3 4 5 6 7 89 1.0 1.5 Normalized Time (1/f sec) Step Response (V/V) Step Response 1.Normalized Group Delay: The above delay data is normalized to a corner frequency of 1.0Hz.The actual delay is the normalized delay divided by the actual corner frequency (fc). Actual Delay = -20 1.2 1.0 0.8 0.6 0.4 0.2 -0.0 -0.2 0 1 2 3 4 Normalized Time (1/f sec) Normalized Delay Actual Corner Frequency (fc) in Hz 2 25 Locust St., Haverhill, Massachusetts 01830 ∑Tel :800/252-7074, 978/374-0761 ∑FAX:978/521-1839 e-mail: [email protected] ∑Web Address: http://www.freqdev.com ∑Fax on Demand: 978/521-5178 5 Low-Pass 4-Pole Appendix A Butterworth Theoretical Transfer Characteristics 1 f/fc Amp Phase Delay (Hz) (dB) (deg) (sec) 0.00 0.00 0.00 .416 0.10 0.00 -15.0 .418 0.20 0.00 -30.1 .423 0.30 -0.00 -45.5 .433 0.40 -0.003 -61.4 .449 0.50 -0.017 -78.0 .474 0.60 -0.072 -95.7 .511 0.70 -0.243 -115 .558 0.80 -0.674 -136 .604 0.85 -1.047 -147 .619 0.90 -1.555 -158 .622 0.95 -2.21 -169 .612 1.00 -3.01 -180 .588 1.10 -4.97 -200 .513 1.20 -7.24 -217 .427 1.30 -9.62 -231 .350 1.40 -12.0 -242 .289 1.50 -14.3 -252 .241 1.60 -16.4 -260 .204 1.70 -18.5 -266 .175 1.80 -20.5 -272 .152 1.90 -22.3 -277 .134 2.00 -24.1 -282 .119 2.25 -28.2 -291 .091 2.50 -31.8 -299 .072 2.75 -35.1 -304 .059 3.00 -38.2 -309 .049 3.25 -41.0 -313 .041 3.50 -43.5 -317 .035 4.00 -48.2 -322 .027 5.00 -55.9 -330 .017 6.00 -62.3 -335 .012 7.00 -67.6 -339 .009 8.00 -72.2 -341 .007 9.00 -76.3 -343 .005 -80.0 10.0 -345 .004 Frequency Response Amp (dB) 0 -40 -60 -80 -100 0.1 2 3 4 5 6 78 1.0 2 3 4 5 6 7 10.0 Normalized Frequency(f/fc) Delay (Normalized) Delay (sec) 2.0 1.0 0.0 0.1 0.15 2 3 4 5 6 7 89 1.0 1.5 Normalized Frequency(f/fc) Step Response (V/V) Step Response 1.Normalized Group Delay: The above delay data is normalized to a corner frequency of 1.0Hz.The actual delay is the normalized delay divided by the actual corner frequency (fc). Actual Delay = -20 1.2 1.0 0.8 0.6 0.4 0.2 -0.0 0 1 2 3 4 Normalized Time (1/f sec) Normalized Delay Actual Corner Frequency (fc) in Hz 7 25 Locust St., Haverhill, Massachusetts 01830 ∑Tel :800/252-7074, 978/374-0761 ∑FAX:978/521-1839 e-mail: [email protected] ∑Web Address: http://www.freqdev.com ∑Fax on Demand: 978/521-5178 5 High-Pass 4-Pole Appendix A Butterworth Theoretical Transfer Characteristics 1 f/fc Amp Phase Delay (Hz) (dB) (deg) (sec) 0.10 -80.0 345 .418 -55.9 0.20 330 .423 -41.8 0.30 314 .433 -31.8 0.40 299 .449 -24.1 0.50 282 .474 0.60 -17.8 264 .511 0.70 -12.6 245 .558 0.80 -8.43 224 .604 0.85 -6.69 213 .619 202 0.90 -5.22 .622 0.95 -3.99 191 .612 1.00 -3.01 180 .588 1.20 -0.908 143 .427 .289 1.40 -0.285 118 .204 1.60 -0.100 100 1.80 -0.039 87.6 .152 2.00 -0.017 78.0 .119 61.4 2.50 -0.003 .072 -0.001 50.7 3.00 .049 0.00 37.8 4.00 .027 5.00 0.00 30.1 .017 6.00 0.00 25.1 .012 7.00 0.00 21.4 .009 0.00 8.00 18.8 .007 0.00 9.00 16.7 .005 10.0 0.00 15.0 .004 Frequency Response Amp (dB) 0 -20 -40 -60 -80 -100 0.1 2 3 4 5 6 78 1.0 2 3 4 5 6 7 10.0 Normalized Frequency(f/fc) 1.Normalized Group Delay: The above delay data is normalized to a corner frequency of 1.0Hz.The actual delay is the normalized delay divided by the actual corner frequency (fc). Actual Delay = Normalized Delay Actual Corner Frequency (fc) in Hz 27 25 Locust St., Haverhill, Massachusetts 01830 ∑Tel :800/252-7074, 978/374-0761 ∑FAX:978/521-1839 e-mail: [email protected] ∑Web Address: http://www.freqdev.com ∑Fax on Demand: 978/521-5178