D70 Series
8-, 6-, 4-Pole
Fixed Frequency
Low-Pass Filters
Model
D70L8L
D70L6L
D70L4L
Product Specifications
Transfer Function
Size
8-Pꢂleꢁ Bessel
6-Pꢂleꢁ Bessel
4-Pꢂleꢁ Bessel
0.84” ꢀ 0.65” ꢀ 0.31”
100 Hz tꢂ 50 kHz
0.84” ꢀ 0.65” ꢀ 0.31”
100 Hz tꢂ 50 kHz
0.65” ꢀ 0.51” ꢀ 0.31”
100 Hz tꢂ 50 kHz
Range fc
Theoretical Transfer
Characteristics
Appendiꢀ A
Page 4
Appendiꢀ A
Page 3
Appendiꢀ A
Page ±
Passband Ripple
(theꢂretical)
0.0 dB
0.0 dB
0.0 dB
DC Voltage Gain
(nꢂn-inverting)
0 ± 0.0± dB typ.
0 ± 0.0± dB typ.
0 ± 0.0± dB typ.
Stopband
Attenuation Rate
48 dB/ꢂctave
36 dB/ꢂctave
±4 dB/ꢂctave
Cutoff Frequency
Stability
Amplitude
Phase
ꢃc
± ±2 maꢀ. ꢃc
± ±2 maꢀ. ꢃc
± ±2 maꢀ.
± 0.0±2 /°C
-3 dB
± 0.0±2 /°C
-3 dB
± 0.0±2 /°C
-3 dB
-18±°
-155°
-1±1°
Filter Attenuation
(theꢂretical)
1.91 dB
3.01 dB
60.0 dB
80.0 dB
0.80 ꢃc
1.00 ꢃc
4.5± ꢃc
6.07 ꢃc
1.89 dB
3.01 dB
60.0 dB
80.0 dB
0.80 ꢃc
1.00 ꢃc
5.41 ꢃc
7.99 ꢃc
1.86 dB
3.01 dB
60.0 dB
80.0 dB
0.80 ꢃc
1.00 ꢃc
8.48 ꢃc
15.1± ꢃc
1
Phase Match
1
Amplitude Accuracy
(theꢂretical)
Total Harmonic
Distortion @ 1 kHz
< -90 dB
< -90 dB
< -90 dB
Wide Band Noise
±00 mVrms typ.
50 mVrms typ.
±00 mVrms typ.
50 mVrms typ.
±00 mVrms typ.
50 mVrms typ.
Narrow Band Noise
Filter Mounting
Assembly
FMA-01A
FMA-01A
FMA-01A
1. Phase Match and Amplitude Accuracy are within ±±2 maꢀ.ꢁ ±12 typ. ꢂꢃ the theꢂretical transꢃer characteristics.
3
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e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com