Description The D74 and DP74 Series of low-power, fixed-frequency, linear active filters are high performance, 4-pole filters in a compact package. These Butterworth and Bessel low-pass and Butterworth high-pass filters (D74 only) combine linear active filter design with the space savings of a 16-pin dual in-line package (DIP). Each model comes factory tuned to a user- specified corner frequency between 1 Hz and 100 kHz (DP74, 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 and shock analysis Automatic test equipment Aerospace, navigation and sonar Communication systems Medical electronics Sound and vibration testing Noise elimination Process control Available Low-Pass Models: D74L4B 4-pole Butterworth DP74L4B 4-pole Butterworth (Low Power) D74L4L 4-pole Bessel DP74L4L 4-pole Bessel (Low Power)   Available High-Pass Models: D74H4B 4-pole Butterworth Fixed Frequency 4-Pole Low-Pass and High-Pass Filters Model D74L4B & DP74L4B D74L4L & DP74L4L   Model D74H4B Product Specifications   Low-Pass   High-Pass Transfer Function Size Range fc    D74    DP74 4-Pole, Butterworth 0.85” x 0.45” x 0.3” 1 Hz to 100 kHz 1 Hz to 5 kHz 4-Pole, Bessel 0.85” x 0.45” x 0.3” 1 Hz to 100 kHz 1 Hz to 5 kHz   Transfer Function Size Range fc 4-Pole, Butterworth 0.85” x 0.45” x 0.3” 1 Hz to 100 kHz Theoretical Transfer Characteristics Click to view Click to view     Click to view Passband Ripple    (theoretical) 0.0 dB 0.0 dB   Passband Ripple    (theoretical) 0.0 dB DC Voltage Gain    (non-inverting) 0 ± 0.1 dB typ. 0 ± 0.1 dB typ.   Voltage Gain    (non-inverting) 0 ± 0.1 dB to 100 kHz Stopband Attenuation Rate 24 dB/octave 24 dB/octave   Stopband Attenuation Rate 24 dB/octave         Power Bandwidth 120 kHz         Small Signal Bandwidth (-6 dB) 1 MHz Cutoff Frequency Stability Amplitude Phase fc          ± 2% max. ± 0.03% /°c -3 dB -180° fc          ± 2% max. ± 0.03% /°c -3 dB -121°   Cutoff Frequency Stability Amplitude Phase fc          ± 2% max. ± 0.03% /°c -3 dB -180° Filter Attenuation    (theoretical) 0.67 dB       0.80 fc 3.01 dB       1.00 fc 60.0 dB       5.62 fc 80.0 dB       10.0 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   Filter Attenuation    (theoretical) 80.0 dB       0.10 fc 60.0 dB       0.18 fc 3.01 dB       1.00 fc 0.00 dB       4.00 fc Total Harmonic Distortion @ 1 kHz    D74    DP74 < - 70 dB < - 70 dB < - 70 dB < - 70 dB   Total Harmonic Distortion @ 1 kHz    D74    < - 70 dB Wide Band Noise    (5 Hz - 2 MHz) 200 µVrms typ. 200 µVrms typ.   Wide Band Noise    (5 Hz - 2 MHz) 400 µVrms typ. Narrow Band Noise   (20 Hz - 100 kHz) 50 µVrms typ. 50 µVrms typ.   Narrow Band Noise   (20 Hz - 100 kHz) 100 µVrms typ. Filter Mounting Assembly FMA-01S FMA-01S   Filter Mounting Assembly FMA-01S Specifications (@ 25°C and Vs ±15 Vdc) Analog Input Characteristics1 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 D74: ± 10 mA DP74: ± 5 mA Offset Voltage: fc <100 Hz fc ³100 Hz 0 - 50°C 0 - 70°C 10 mV max. 10 mV max. 3 mV typ. 3 mV typ. Offset Temp. Coeff.: 20 µV / °C   Power Supply (+/-Vs) Rated Voltage: ± 15 Vdc Operating Range: ± 5 to ± 18 Vdc Maximum Safe Voltage: ± 18 Vdc Quiescent Current: D74: ± 5 mA max, 3 mA typ. DP74: ± 1.5 mA max, 600 µA typ. Temperature Operating: 0 to + 70°C Storage: -25 to+85°C   Notes: Input and output signal voltage referenced to supply common. Output is short circuit protected to common. DO NOT CONNECT TO +/-Vs. 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.