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| D78 & DP78 Series 1.0 Hz to 100 kHz Fixed Frequency 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 Applications * Anti-alias filtering * Vibration & shock analysis * Automatic test equipment * Aerospace, navigation and sonar * Communication systems * Medical electronics * Sound and vibration testing * Noise elimination * Process control 1 32 Pin DIP 8-Pole Filters Available D78L8B DP78L8B D78L8L DP78L8L 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 General Specifications: Pin-out/package data & ordering information . . . .3 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 D78 & DP78 Series Fixed Frequency Model Product Specifications Transfer Function D78L8B & DP78L8B Low-Pass 8-Pole, Butterworth Low-Pass 8-Pole, Bessel 1.8" x 0.8" x 0.5" 1.8" x 0.8" x 0.3" 1.8" x 0.8" x 0.5" 1 Hz to 100 kHz 1 Hz to 5 kHz Appendix A Page 4 0.0 dB 0 0.1 dB typ. Transfer Function 8-Pole Low-Pass and High-Pass Filters D78L8L & DP78L8L Model D78H8B High-Pass 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" DP78 1.00 Hz to 5.00 kHz 1.8" x 0.8" x 0.5" Range fc D78 DP78 Theoretical Transfer Characteristics Passband Ripple (theoretical) 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" Range fc D78 Theoretical Transfer Characteristics Passband Ripple (theoretical) 1 Hz to 100 kHz 1 Hz to 5 kHz Appendix A Page 9 0.0 dB 0 0.1 dB typ. 1 Hz to 100 kHz Appendix A Page 29 0.0 dB 0 0.1 dB to 100 kHz DC Voltage Gain (non-inverting) Voltage Gain (non-inverting) Stopband Attenuation Rate 48 dB/octave 48 dB/octave Stopband Attenuation Rate Power Bandwidth Small Signal Bandwidth 48 dB/octave 120 kHz (-6 dB) 1 MHz fc 0.03% /C -3 dB -360 80 dB 60 dB 3.01 dB 0.00 dB 2% max. Cutoff Frequency Stability Amplitude Phase Filter Attenuation (theoretical) fc 0.03% /C -3 dB -360 0.12 dB 3.01 dB 60.0 dB 80.0 dB 2% max. fc 0.03% /C -3 dB -182 1.91 dB 3.01 dB 60.0 dB 80.0 dB 2% max. Cutoff Frequency Stability Amplitude Phase Filter Attenuation (theoretical) 0.80 fc 1.00 fc 2.37 fc 3.16 fc 0.80 fc 1.00 fc 4.52 fc 6.07 fc .31 fc .42 fc 1.00 fc 2.0 fc Total Harmonic Distortion @ 1 kHz D78 DP78 Wide Band Noise (5 Hz - 2 MHz) <-70 dB <-70 dB 200 mVrms typ. 50 mVrms typ. <-70 dB <-70 dB 200 mVrms typ. 50 mVrms typ. Total Harmonic Distortion @ 1 kHz D78 Wide Band Noise (5 Hz - 2 MHz) <-70 dB 400 mVrms typ. 100 mVrms typ. Narrow Band Noise (20 Hz - 100 kHz) Narrow Band Noise (20 Hz - 100 kHz) Filter Mounting Assembly FMA-01A FMA-01A Filter Mounting Assembly FMA-01A 2 1784 Chessie Lane, Ottawa, IL 61350 * Tel: 800/252-7074, 815/434-7800 * FAX: 815/434-81769 e-mail: sales@freqdev.com * Web Address: http://www.freqdev.com D78 & DP78 Series Specification (25C and Vs 15 Vdc) Analog Input Characteristics Impedance 10 kW min. Voltage Range 10 Vpeak Max. Safe Voltage Vs 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. 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 3.0 mA max. 1.5 mA typ. Temperature Operating - 0 to + 70 C Storage - 25 to + 85 C Notes: 1. Input and output signal voltage referenced to supply common. 2. Output is short circuit protected to common. DO NOT CONNECT TO Vs. 1 Pin-Out and Package Data Ordering Information 0.80 Side View 0.025 dia. 1.80 All dimensions are in inches All case dimensions 0.01" Front View 0.30 0.50 0.15 (min) 0.80 0.70 OUT +VS -VS Bottom View GND IN 0.10 0.00 0.00 0.15 0.45 0.55 1.55 1.65 1.80 Filter Mounting Assembly-See FMA-01A Ordering Information Filter Type L - Low Pass H - High Pass Transfer Function B - Butterworth L - Bessel D78L8B-849 Hz Power Level D - Standard Power DP - Low Power - 3 dB Corner Frequency 3 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 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 8-Pole Bessel Appendix A 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 Low-Pass Frequency Response 0 Amp (dB) -20 -40 -60 -80 -100 0.1 2 1.0 2 3 4 5 6 7 10.0 Normalized Frequency(f/fc) 3 4 5 6 78 Delay (Normalized) 1.0 Delay (sec) 0.5 0.0 0.1 0.15 2 3 4 5 6 7 89 Normalized Time (1/f sec) 1.0 1.5 Step Response Step Response (V/V) 1.2 1.0 0.8 0.6 0.4 0.2 -0.0 -0.2 0 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 1 Normalized Time (1/f sec) 2 3 4 5 4 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 Low-Pass 8-Pole Appendix A 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 Butterworth Frequency Response 0 Amp (dB) -20 -40 -60 -80 -100 0.1 2 3 4 5 6 78 1.0 2 3 4 5 67 Normalized Frequency(f/fc) 10.0 2.0 Delay (sec) Delay (Normalized) 1.0 0.0 0.1 0.15 2 3 4 Normalized Time (1/f sec) 5 6 7 8 9 1.0 1.5 Step Response Step Response (V/V) 1.2 1.0 0.8 0.6 0.4 0.2 -0.0 0 1 2 3 4 Normalized Time (1/f sec) 5 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 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 9 High-Pass 8-Pole Appendix A 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 0.139 120 0.00 2.50 0.00 99.2 0.094 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 Butterworth Frequency Response 0 Amp (dB) -20 -40 -60 -80 -100 0.1 2 1.0 2 3 4 5 6 7 10.0 Normalized Frequency(f/fc) 3 4 5 6 78 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 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 29 |
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