Fixed Frequency
D72 & DP72 Series
2-Pole
Low-Pass and High-Pass Filters
25 Locust St. Haverhill, Massachusetts 01830 (800) 252-7072 (978) 372-0761 FAX (978) 521-1839
e-mail: sales@freqdev.com Web Address: http://www.freqdev.com Fax on Demand: 978/521-5178
2
Model
D72L2B & DP72L2B
D72L2L & DP72L2L
Model
D72H2B
Product Specifications
Low-Pass
Low-Pass
High-Pass
Transfer Function
2-Pole, Butterworth
2-Pole, Bessel
Transfer Function
2-Pole, Butterworth
Size
0.88” x 0.46” x 0.375”
0.88” x 0.46” x 0.375”
Size
0.88” x 0.46” x 0.375”
Range f
c
D72
DP72
1 Hz to 100 kHz
1 Hz to 5 kHz
1 Hz to 100 kHz
1 Hz to 5 kHz
Range f
c
1 Hz to 100 kHz
Theoretical Transfer
Characteristics
Appendix A
Page 6
Appendix A
Page 1
Theoretical Transfer
Characteristics
Appendix A
Page 26
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
Stopband
Attenuation Rate
12 dB/octave
12 dB/octave
12 dB/octave
Power Bandwidth
120 kHz
Small Signal Bandwidth
(-6 dB) 1 MHz
Cutoff Frequency
Stability
Amplitude
Phase
f
c
±2% max.
±0.03% /°C
-3 dB
-90°
f
c
±2% max.
±0.03% /°C
-3 dB
-74.3°
Cutoff Frequency
Stability
Amplitude
Phase
f
c
±2% max.
±0.03% /°C
-3 dB
-90°
Filter Attenuation
(theoretical)
1.49 dB 0.80 f
c
3.01 dB 1.00 f
c
30.0 dB 5.62 f
c
40.0 dB 10.0 f
c
1.91 dB 0.80 f
c
3.01 dB 1.00 f
c
30.0 dB 7.10 f
c
40.0 dB 12.75 f
c
Filter Attenuation
(theoretical)
40 dB 0.10 f
c
30 dB 0.18 f
c
3.01 dB 1.00 f
c
0.02 dB 4.00 f
c
Total Harmonic
Distortion @ 1 kHz
D72
DP72
Total Harmonic
Distortion @ 1 kHz
D72
<-70 dB
<-70 dB
<-70 dB
<-70 dB
<-70 dB
Wide Band Noise
(5 Hz - 2 MHz)
200
μ
Vrms typ.
200
μ
Vrms typ.
Wide Band Noise
(5 Hz - 2 MHz)
400
μ
Vrms typ.
Narrow Band Noise
(20 Hz - 100 kHz)
50
μ
Vrms typ.
50
μ
Vrms typ.
Narrow Band Noise
(20 Hz - 100 kHz)
100
μ
Vrms typ.
Filter Mounting
Assembly
Filter Mounting
Assembly
FMA-01A
FMA-01A
FMA-01A