D78 & DP78 Series 1.0 Hz to 100 kHz Fixed Frequency 32 Pin DIP 8-Pole Filters Description The D78 and DP78 Series of low-power, fixedfrequency, linear active filters are high performance, 8-pole filters in a compact package. These Butterworth and Bessel low-pass and Butterworth high-pass filters (D78 only) combine linear active filter design with the space savings of a 32-pin dual in-line package (DIP). Each model comes factory tuned to a user-specified corner frequency between 1 Hz and 100 kHz (DP78, 1 Hz to 5kHz). These fully self-contained units require no external components or adjustments and operate with dynamic input voltage range from non-critical ±5V to ±18V power supplies. Features/Benefits: • Low cost solution for low frequency signal conditioning • Compact DIP design minimizes board space requirements • Plug-in ready-to-use, reducing engineering design and manufacturing time • Factory tuned, no external clocks or adjustments needed saving time and labor of other discrete assembly solutions • Low harmonic distortion and wide signal-to-noise ratio to 12 bit resolution Available D78L8B DP78L8B D78L8L DP78L8L Applications • Anti-alias filtering • Vibration & shock analysis • Automatic test equipment • Aerospace, navigation and sonar Low-Pass Models: . . . . . . . . . . . . . . . . 8-pole Butterworth . . . . . . . . . . . . . . .2 8-pole Butterworth (Low Power) . . . . .2 8-pole Bessel . . . . . . . . . . . . . . . . . . .2 8-pole Bessel (Low Power) . . . . . . . .2 Available High-Pass Models: D78H8B 8-pole Butterworth . . . . . . . . . . . . . . .2 • Communication systems • Medical electronics General Specifications: Pin-out/package data & ordering information . . . .3 • Sound and vibration testing • Noise elimination • Process control 1 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 D78 & DP78 Series 8-Pole Low-Pass and High-Pass Filters Fixed Frequency Model D78L8B & DP78L8B D78L8L & DP78L8L Product Specifications Low-Pass Low-Pass Transfer Function 8-Pole, Butterworth 8-Pole, Bessel Model High-Pass Transfer Function Size D78 1.00 Hz to 1.00 kHz 1.8” x 0.8” x 0.5” D78 1.01 kHz to 100 kHz 1.8” x 0.8” x 0.3” DP78 1.00 Hz to 5.00 kHz 1.8” x 0.8” x 0.5” 1.8” x 0.8” x 0.5” 1.8” x 0.8” x 0.3” 1.8” x 0.8” x 0.5” Range fc D78 DP78 1 Hz to 100 kHz 1 Hz to 5 kHz 1 Hz to 100 kHz 1 Hz to 5 kHz Theoretical Transfer Characteristics Appendix A Page 9 Passband Ripple 0.0 dB Range fc D78 1 Hz to 100 kHz Appendix A Page 4 Theoretical Transfer Characteristics Appendix A Page 29 0.0 dB Passband Ripple 0.0 dB (theoretical) 0 ± 0.1 dB typ. 0 ± 0.1 dB typ. Voltage Gain (non-inverting) Stopband Attenuation Rate 48 dB/octave fc ± 0.03% /°C -3 dB -360° Filter Attenuation 0.12 dB 3.01 dB 60.0 dB 80.0 dB ± 2% max. 0.80 fc 1.00 fc 2.37 fc 3.16 fc fc ± 0.03% /°C -3 dB -182° <-70 dB <-70 dB Wide Band Noise 200 mVrms typ. (20 Hz - 100 kHz) Filter Mounting Assembly 48 dB/octave Power Bandwidth 120 kHz Small Signal Bandwidth (-6 dB) 1 MHz ± 2% max. Cutoff Frequency Stability Amplitude Phase fc ± 0.03% /°C -3 dB -360° 0.80 fc 1.00 fc 4.52 fc 6.07 fc Filter Attenuation 80 dB 60 dB 3.01 dB 0.00 dB 1.91 dB 3.01 dB 60.0 dB 80.0 dB <-70 dB <-70 dB Narrow Band Noise Stopband Attenuation Rate 48 dB/octave Total Harmonic Distortion @ 1 kHz D78 DP78 (5 Hz - 2 MHz) 0 ± 0.1 dB to 100 kHz (non-inverting) Cutoff Frequency Stability Amplitude Phase (theoretical) 8-Pole, Butterworth, Size D78 1.00 Hz to 1.00 kHz 1.8” x 0.8” x 0.5” D78 1.01 kHz to 100 kHz 1.8” x 0.8” x 0.3” (theoretical) DC Voltage Gain D78H8B (theoretical) Total Harmonic Distortion @ 1 kHz D78 <-70 dB 200 mVrms typ. Wide Band Noise 400 mVrms typ. 50 mVrms typ. 50 mVrms typ. Narrow Band Noise FMA-01A FMA-01A Filter Mounting Assembly (5 Hz - 2 MHz) (20 Hz - 100 kHz) ± 2% max. .31 fc .42 fc 1.00 fc 2.0 fc 100 mVrms typ. FMA-01A 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 D78 & DP78 Series Pin-Out and Package Data Ordering Information Specification (25°C and Vs ± 15 Vdc) 1 0.80 Analog Input Characteristics Impedance 10 kW min. Voltage Range ± 10 Vpeak Max. Safe Voltage ± Vs All dimensions are in inches All case dimensions ± 0.01" 1.80 Front View 0.30 0.50 0.15 (min) 0.80 0.70 OUT +VS -VS Bottom View GND IN 1.80 1.55 1.65 0.45 0.55 0.10 0.00 0.15 Power Supply (±V) Rated Voltage ± 15 Vdc Operating Range ± 5 to ± 18 Vdc Maximum Safe Voltage ± 18 Vdc Quiescent Current D78 12 mA max. 8 mA typ. Quiescent Current DP78 2.5 mA max. 1.5 mA typ. Temperature Operating - 0 to + 70 °C Storage - 25 to + 85 °C 0.025 dia. 0.00 Analog Output Characteristics Impedance 1W Linear Operating Range± 10 V 2 Maximum Current D78 ± 10 mA DP78 ± 5 mA Offset Voltage 20 mV max. 1 3 mV typ. Offset Temp. Coeff. 20 mV / °C typ. Side View Filter Mounting Assembly-See FMA-01A Ordering Information Filter Type Transfer Function L - Low Pass H - High Pass B - Butterworth L - Bessel Notes: 1. Input and output signal voltage referenced to supply common. 2. Output is short circuit protected to common. DO NOT CONNECT TO ±Vs. D78L8B-849 Hz Power Level D – Standard Power DP – Low Power 3 - 3 dB Corner Frequency e.g., 849 Hz 2.50 kHz 33.3 kHz 3. 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 1 Hz to 100 kHz. 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-00D78-00 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 8-Pole Bessel Appendix A Low-Pass Theoretical Transfer Characteristics 1 f/fc Amp Phase Delay (Hz) (dB) (deg) (sec) 0.00 0.00 0.00 .506 0.10 -0.029 -18.2 .506 0.20 -0.117 -36.4 .506 0.30 -0.264 -54.7 .506 0.40 -0.470 -72.9 .506 0.50 -0.737 -91.1 .506 0.60 -1.06 -109 .506 0.70 -1.45 -128 .506 0.80 -1.91 -146 .506 0.85 -2.16 -155 .506 0.90 -2.42 -164 .506 0.95 -2.71 -173 .506 1.00 -3.01 -182 .506 -3.67 1.10 -200 .506 -4.40 1.20 -219 .506 -5.20 1.30 -237 .506 1.40 -6.10 -255 .505 1.50 -7.08 -273 .504 1.60 -8.16 -291 .502 1.70 -9.36 -309 .498 1.80 -10.7 -327 .492 1.90 -12.1 -345 .482 2.00 -13.7 -362 .468 2.25 -18.1 -402 .417 2.50 -23.1 -436 .352 2.75 -28.3 -465 .291 3.00 -33.4 -489 .241 3.25 -38.3 -509 .201 3.50 -43.1 -526 .170 4.00 -51.8 -552 .126 5.00 -66.8 -587 .077 6.00 -79.2 -610 .052 7.00 -89.8 -626 .038 8.00 -99.0 -638 .029 9.00 -107 -647 .023 10.0 -114 -655 .018 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 4 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 8-Pole Appendix A Butterworth Theoretical Transfer Characteristics 1 f/fc Amp Phase Delay (Hz) (dB) (deg) (sec) 0.00 0.00 0.00 .816 0.10 0.00 -29.4 .819 0.20 0.00 -59.0 .828 0.30 0.00 -89.1 .843 0.40 0.00 -120 .867 0.50 0.00 -152 .903 0.60 -0.001 -185 .956 0.70 -0.014 -221 1.04 0.80 -0.121 -261 1.19 0.85 -0.311 -283 1.29 0.90 -0.738 -307 1.40 0.95 -1.58 -333 1.48 1.00 -3.01 -360 1.46 1.10 -7.48 -408 1.17 1.20 -12.9 -445 .873 1.30 -18.2 -472 .672 1.40 -494 .540 -23.4 1.50 -511 .448 -28.2 1.60 -526 .380 -32.7 1.70 -539 .328 -36.9 1.80 -550 .287 -40.8 1.90 -44.6 -560 .253 2.00 -48.2 -568 .226 2.25 -56.3 -586 .174 2.50 -63.7 -600 .139 2.75 -70.3 -611 .113 3.00 -76.3 -621 .094 3.25 -81.9 -629 .080 3.50 -87.1 -635 .069 4.00 -96.3 -646 .052 5.00 -112 -661 .033 6.00 -125 -671 .023 7.00 -135 -678 .017 8.00 -144 -683 .013 9.00 -153 -687 .010 10.0 -160 -691 .008 Frequency Response Amp (dB) 0 -40 -60 -80 -100 0.1 2 3 4 5 6 78 1.0 2 3 4 5 67 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 8 9 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 1 2 3 4 Normalized Time (1/f sec) Normalized Delay Actual Corner Frequency (fc) in Hz 9 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 8-Pole Appendix A Butterworth Theoretical Transfer Characteristics 1 f/fc Amp Phase Delay (Hz) (dB) (deg) (sec) 0.10 -160 691 0.819 0.20 -112 661 0.828 0.30 -83.7 631 0.843 0.40 -63.7 600 0.867 0.50 -48.2 568 0.903 0.60 -35.5 535 .956 499 0.70 -24.8 1.04 459 0.80 -15.6 1.19 437 0.85 -11.6 1.29 413 0.90 -8.06 1.40 0.95 -5.15 386 1.48 360 1.00 -3.01 1.46 275 1.20 -0.229 0.873 226 1.40 -0.020 0.540 -0.002 194 1.60 0.380 170 1.80 0.00 0.287 152 0.00 2.00 0.226 120 0.139 0.00 2.50 0.094 0.00 99.2 3.00 0.052 0.00 74.0 4.00 5.00 0.00 59.0 0.033 49.0 0.023 6.00 0.00 0.00 42.1 0.017 7.00 0.00 36.8 0.013 8.00 0.00 32.7 0.010 9.00 10.0 0.00 29.4 0.008 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 29 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