Fixed Frequency
D74 & DP74 Series
4-Pole
Low-Pass and High-Pass Filters
25 Locust St, Haverhill, Massachusetts 01830 Tel: 800/252-7074, 978/374-0761 FAX: 978/521-1839
e-mail: sales@freqdev.com Web Address: http://www.freqdev.com
2
Model
D74L4B & DP74L4B
D74L4L & DP74L4L
Model
D74H4B
Product Specifications
Low-Pass
Low-Pass
High-Pass
Transfer Function
4-Pole, Butterworth
4-Pole, Bessel
Transfer Function
4-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
D74
DP74
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 7
Appendix A
Page 2
Theoretical Transfer
Characteristics
Appendix A
Page 27
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
24 dB/octave
24 dB/octave
24 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
-180°
f
c
± 2% max.
± 0.03% /°C
-3 dB
-121°
Cutoff Frequency
Stability
Amplitude
Phase
f
c
± 2% max.
± 0.03% /°C
-3 dB
-180°
Filter Attenuation
(theoretical)
0.67 dB 0.80 f
c
3.01 dB 1.00 f
c
60.0 dB 5.62 f
c
80.0 dB 10.0 f
c
1.86 dB 0.80 f
c
3.01 dB 1.00 f
c
60.0 dB 8.48 f
c
80.0 dB 15.12 f
c
Filter Attenuation
(theoretical)
80 dB 0.10 f
c
60 dB 0.18 f
c
3.01 dB 1.00 f
c
0.00 dB 4.00 f
c
Total Harmonic
Distortion @ 1 kHz
D74
DP74
Total Harmonic
Distortion @ 1 kHz
D74
<-70 dB
<-70 dB
<-70 dB
<-70 dB
<-70 dB
Wide Band Noise
(5 Hz - 2 MHz)
200
m
Vrms typ.
200
m
Vrms typ.
Wide Band Noise
(5 Hz - 2 MHz)
400
m
Vrms typ.
Narrow Band Noise
(20 Hz - 100 kHz)
50
m
Vrms typ.
50
m
Vrms typ.
Narrow Band Noise
(20 Hz - 100 kHz)
100
m
Vrms typ.
Filter Mounting
Assembly
Filter Mounting
Assembly
FMA-01A
FMA-01A
FMA-01A