D78 & DP78 Series
8-Pole
Fixed Frequency
Low-Pass and High-Pass Filters
Model
D78L8B & DP78L8B
D78L8L & DP78L8L
Model
D78H8B
Product Specifications
Transfer Function
Size
Low-Pass
Low-Pass
High-Pass
8-Pole, Butterworth
8-Pole, Bessel
Transfer Function
Size
8-Pole, Butterworth,
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”
1.8” x 0.8” x 0.5”
1.8” x 0.8” x 0.3”
1.8” x 0.8” x 0.5”
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
Range fc
D78
D78
1 Hz to 100 kHz
1 Hz to 5 kHz
1 Hz to 100 kHz
1 Hz to 5 kHz
1 Hz to 100 kHz
DP78
Theoretical Transfer
Characteristics
Appendix A
Page 9
Appendix A
Page 4
Theoretical Transfer
Characteristics
Appendix A
Page 29
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
48 dB/octave
48 dB/octave
Attenuation Rate
48 dB/octave
120 kHz
Power Bandwidth
Small Signal Bandwidth
(-6 dB) 1 MHz
Cutoff Frequency
Stability
fc
2% max.
fc
2% max.
Cutoff Frequency
Stability
Amplitude
Phase
fc
2% max.
0.03% /°C
-3 dB
-360°
0.03% /°C
-3 dB
-182°
0.03% /°C
-3 dB
-360°
Amplitude
Phase
Filter Attenuation
(theoretical)
0.12 dB
3.01 dB
60.0 dB
80.0 dB
0.80 fc
1.00 fc
2.37 fc
3.16 fc
1.91 dB
3.01 dB
60.0 dB
80.0 dB
0.80 fc
1.00 fc
4.52 fc
6.07 fc
Filter Attenuation
(theoretical)
80 dB
.31 fc
.42 fc
1.00 fc
2.0 fc
60 dB
3.01 dB
0.00 dB
Total Harmonic
Distortion @ 1 kHz
D78
Total Harmonic
Distortion @ 1 kHz
D78
<-70 dB
<-70 dB
<-70 dB
<-70 dB
<-70 dB
DP78
Wide Band Noise
200 mVrms typ.
200 mVrms typ.
Wide Band Noise
400 mVrms typ.
100 mVrms typ.
(5 Hz - 2 MHz)
(5 Hz - 2 MHz)
Narrow Band Noise
(20 Hz - 100 kHz)
50 mVrms typ.
50 mVrms typ.
Narrow Band Noise
(20 Hz - 100 kHz)
Filter Mounting
Assembly
Filter Mounting
Assembly
FMA-01A
FMA-01A
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
FREQUENCYDEVICES [ FREQUENCY DEVICES, INC. ]
