Description The D70 Series of small, fixed-frequency, linear active DIP filters provides high performance linear, multi-pole filtering in a compact package, with a broad range of pole configurations. These Butterworth and Bessel low-pass and Butterworth high-pass filters combine the excellent performance of linear multipole filter design with the space saving of the dual in-line package (DIP). Each model comes factory tuned to a user-specified corner frequency between 100 Hz and 50 kHz. These fully self-contained units require no external components or adjustments. They operate with dynamic input voltage range from non-critical ±5V to ±18V power supplies. Features/Benefits: 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 Low harmonic distortion and wide signal-to-noise ratio to 14 bit resolution Broad range of pole configurations and corner frequencies to meet a wide range of applications   Available High-Pass Models: D70H8B 8-pole Butterworth D70H6B 6-pole Butterworth D70H4B 4-pole Butterworth   Applications Anti&shy;alias filtering Data acquisition systems Communication systems and electronics Medical electronics equipment and research Aerospace, navigation and sonar applications Sound and vibration testing Real and compressed time data analysis Noise elimination Signal reconstruction Available Low-Pass Models: D70L8B 8-pole Butterworth D70L6B 6-pole Butterworth D70L4B 4-pole Butterworth D70L8L 8-pole Bessel D70L6L 6-pole Bessel D70L4L 4-pole Bessel Fixed Frequency 8-, 6-, 4-Pole Low-Pass Filters Model D70L8B D70L6B D70L4B Product Specifications Transfer Function Size Range fc 8-Pole, Butterworth 0.84” x 0.65” x 0.31” 100 Hz to 50 kHz 6-Pole, Butterworth 0.84” x 0.65” x 0.31” 100 Hz to 50 kHz 4-Pole, Butterworth 0.65” x 0.51” x 0.31” 100 Hz to 50 kHz Theoretical Transfer Characteristics Click to view Click to view Click to view Passband Ripple    (theoretical) 0.0 dB 0.0 dB 0.0 dB DC Voltage Gain    (non-inverting) 0 ± 0.02 dB typ. 0 ± 0.02 dB typ. 0 ± 0.02 dB typ. Stopband Attenuation Rate 48 dB/octave 36 dB/octave 24 dB/octave Cutoff Frequency   Stability   Amplitude   Phase fc          ±2% max. ± 0.02% /°c -3 dB -360° fc          ±2% max. ± 0.02% /°c -3 dB -270° fc          ±2% max. ± 0.02% /°c -3 dB -180° Filter Attenuation    (theoretical) 0.12 dB       0.80 fc 3.01 dB       1.00 fc 60.0 dB       2.37 fc 80.0 dB       3.16 fc 0.29 dB       0.80 fc 3.01 dB       1.00 fc 60.0 dB       3.16 fc 80.0 dB       4.64 fc 0.67 dB      0.80 fc 3.01 dB       1.00 fc 60.0 dB       5.62 fc 80.0 dB       10.0 fc Phase Match1           Amplitude Accuracy1    (theoretical)       Total Harmonic Distortion @ 1 kHz < -90 dB < -90 dB < -90 dB Wide Band Noise    (5 Hz - 4 MHz) 200 µVrms typ. 200 µVrms typ. 200 µVrms typ. Narrow Band Noise (5 Hz - 50 kHz) 50 µVrms typ. 50 µVrms typ. 50 µVrms typ. Filter Mounting Assembly FMA-01S FMA-01S FMA-01S   1. Phase Match and Amplitude Accuracy are within ±2% max., ±1% typ. of the theoretical transfer characteristics. Fixed Frequency 8-, 6-, 4-Pole Low-Pass Filters Model D70L8L D70L6L D70L4L Product Specifications Transfer Function Size Range fc 8-Pole, Bessel 0.84” x 0.65” x 0.31” 100 Hz to 50 kHz 6-Pole, Bessel 0.84” x 0.65” x 0.31” 100 Hz to 50 kHz 4-Pole, Bessel 0.65” x 0.51” x 0.31” 100 Hz to 50 kHz Theoretical Transfer Characteristics Click to view Click to view Click to view Passband Ripple    (theoretical) 0.0 dB 0.0 dB 0.0 dB DC Voltage Gain    (non-inverting) 0 ± 0.02 dB typ. 0 ± 0.02 dB typ. 0 ± 0.02 dB typ. Stopband Attenuation Rate 48 dB/octave 36 dB/octave 24 dB/octave Cutoff Frequency   Stability   Amplitude   Phase fc          ±2% max. ± 0.02% /°c -3 dB -182° fc          ±2% max. ± 0.02% /°c -3 dB -155° fc          ±2% max. ± 0.02% /°c -3 dB -121° Filter Attenuation    (theoretical) 1.91 dB       0.80 fc 3.01 dB       1.00 fc 60.0 dB       4.52 fc 80.0 dB       6.07 fc 1.89 dB       0.80 fc 3.01 dB       1.00 fc 60.0 dB       5.41 fc 80.0 dB       7.99 fc 1.86 dB       0.80 fc 3.01 dB       1.00 fc 60.0 dB       8.48 fc 80.0 dB       15.12 fc Phase Match1           Amplitude Accuracy1    (theoretical)       Total Harmonic Distortion @ 1 kHz < -90 dB < -90 dB < -90 dB Wide Band Noise 200 µVrms typ. 200 µVrms typ. 200 µVrms typ. Narrow Band Noise 50 µVrms typ. 50 µVrms typ. 50 µVrms typ. Filter Mounting Assembly FMA-01S FMA-01S FMA-01S   1. Phase Match and Amplitude Accuracy are within ±2% max., ±1% typ. of the theoretical transfer characteristics. Fixed Frequency 8-, 6-, 4-Pole High-Pass Filters Model D70H8B D70H6B D70H4B Product Specifications Transfer Function Size Range fc 8-Pole, Butterworth 0.84” x 0.65” x 0.31” 100 Hz to 50 kHz 6-Pole, Butterworth 0.84” x 0.65” x 0.31” 100 Hz to 50 kHz 4-Pole, Butterworth 0.65” x 0.51” x 0.31” 100 Hz to 50 kHz Theoretical Transfer Characteristics Click to view Click to view Click to view Passband Ripple    (theoretical) 0.0 dB 0.0 dB 0.0 dB Voltage Gain    (non-inverting) 0 ± 0.02 dB typ. 0 ± 0.02 dB typ. 0 ± 0.02 dB typ. Power Bandwidth 120 kHz 120 kHz 120 kHz Small Signal Bandwidth (-6 dB) 1MHz (-6 dB) 1MHz (-6 dB) 1MHz Stopband Attenuation Rate 48 dB/octave 36 dB/octave 24 dB/octave Cutoff Frequency   Stability   Amplitude   Phase fc          ±2% max. ± 0.02% /°c -3 dB -360° fc          ±2% max. ± 0.02% /°c -3 dB -270° fc          ±2% max. ± 0.02% /°c -3 dB -180° Filter Attenuation    (theoretical) 80.0 dB        0.31 fc 60.0 dB        0.42 fc 3.01 dB       1.00 fc 00.0 dB       2.00 fc 80.0 dB        0.21 fc 60.0 dB        0.32 fc 3.01 dB       1.00 fc 00.0 dB       2.50 fc 80.0 dB        0.10 fc 60.0 dB        0.18 fc 3.01 dB       1.00 fc 00.0 dB       4.0 fc Phase Match1           Amplitude Accuracy1    (theoretical)       Total Harmonic Distortion @ 1 kHz < -80 dB < -80 dB < -80 dB Wide Band Noise    (20 Hz - 4 MHz) 400 µVrms typ. 400 µVrms typ. 400 µVrms typ. Narrow Band Noise    (20 Hz - 100 kHz) 100 µVrms typ. 100 µVrms typ. 100 µVrms typ. Filter Mounting Assembly FMA-01S FMA-01S FMA-01S   1. Phase Match and Amplitude Accuracy are within ±2% max., ±1% typ. of the theoretical transfer characteristics.   Specifications (@ 25°C and Vs ±15 Vdc) Analog Input Characteristics 1 Impedance: 10 kΩ min. Voltage Range: ± 10 Vpeak Max. Safe Voltage: ± Vs Analog Output Characteristics Impedance: 1 W Linear Operating Range: ± 10 V Maximum Current2: ± 10 mA Offset Voltage3: ±10 mV Offset Temp. Coeff.: 50 µV / °C Notes: Input and output signal voltage referenced to supply common. Output is short circuit protected to common. DO NOT CONNECT TO +/-Vs. Adjustable to zero. 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 100 Hz to 50 kHz. Power Supply (+/-Vs) Rated Voltage: ± 15 Vdc Operating Range: ± 5 to ± 18 Vdc Maximum Safe Voltage: ± 18 Vdc Quiescent Current: 8 Pole: ± 18 mA 6 Pole: ± 15 mA 4 Pole: ± 10 mA Temperature Operating: 0 to + 70°C Storage: -25 to+85°C Pin-Out and Package Data Filter Mounting Assembly-See FMA-01S Ordering Information 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.