D68 & DP68 Series
8-Pole
High-Pass Filters
Fixed Frequency
Model
D68H8B
D68H8E
D68H8EX
D68H8EY
Product Specifications
Transfer Function
8-Pole, Butterworth
1.8” x 0.8” x 0.3”
8-Pole, 6 Zero,
Elliptic
8-Pole, 6 Zero,
Elliptic
8-Pole, 6 zero,
Elliptic
Size
1.8” x 0.8” x 0.3”
1.8” x 0.8” x 0.3”
1.8” x 0.8” x 0.3”
Range fc, fr
D68
1 Hz to 100 kHz
Not Available
1 Hz to 100 kHz
Not Available
1 Hz to 100 kHz
Not Available
1 Hz to 100 kHZ
Not Available
DP68
Theoretical Transfer
Characteristics
Appendix A
Page 29
Appendix A
Page 37
Appendix A
Page 36
Appendix A
Page 38
Passband Ripple
(theoretical)
0.0 dB
0.035 dB
-0.05 dB
-0.05 dB
Voltage Gain
(non-inverting)
0
0
0.2 dB to 100 kHz
0.5 dB to 120 kHz
0
0
0.2 dB to 100 kHz
0.5 dB to 120 kHz
0
0
0.2 dB to 100 kHz
0.5 dB to 120 kHz
0
0
0.2 dB to 100 kHz
0.5 dB to 120 kHz
Stopband
Attenuation Rate
48 dB/octave
120 kHz
80 dB
80 dB
100 dB
Power Bandwidth
120 kHz
120 kHz
120 kHz
Small Signal Bandwidth (-6dB) 1 MHz
(-6dB) 1 MHz
(-6dB) 1 MHz
(-6dB) 1 MHz
Cutoff Frequency
Stability
Amplitude
Phase
fc
1% max.
fr
1% max.
fr
1% max.
fr
2% max.
0.01% /°C
0.01% /°C
-0.035 dB`
-323.5°
0.01% /°C
-0.05 dB
-414°
0.01% /°C
-0.05 dB
-419°
-3 dB
-360°
Filter Attenuation
(theoretical)
80.0 dB
60.0 dB
3.01 dB
0.00 dB
0.31 fc
0.42 fc
1.00 fc
2.00 fc
80.0 dB
60.0 dB
3.01 dB
0.03 dB
0.00 dB
0.56 fr
0.60 fr
0.88 fr
1.00 fr
2.00 fr
80.0 dB
60.0 dB
3.01 dB
0.05 dB
0.00 dB
0.64 fr 100.0 dB
0.50 fr
0.55 fr
0.94 fr
1.00 fr
2.00 fr
0.69 fr 80.0 dB
0.95 fr 3.01 dB
1.00 fr 0.03 dB
2.00 fr 0.00 dB
1
Phase Match
fc - 100 kHz
3° max. 0 - 1.25 fr
1.5° typ.
4° max. 0 - 1.25 fr
2° typ.
2° max. 1.25 fr-100 kHz
1° typ.
4° max. 0 - 1.25 fr
2° typ.
2° max. 1.25 fr-100 kHz
1° typ.
4° max.
2° typ.
3° max.
1.5° typ.
1.25 fr-100 kHz
Amplitude Accuracy
(theoretical)
1.0 - 1.25 fc
0.3 dB max. 1.00 - 1.25 fr 0.3 dB max. 1.00 - 1.25 fr 0.5 dB max. 1.00 - 1.25 fr
0.15 dB typ. 0.15 dB typ. 0.25 dB typ.
0.5 dB max
0.25 dB typ
1.25 fc-100 kHz 0.2 dB max. 1.25 fr-100 kHz 0.2 dB max. 1.25 fr-100 kHz 0.2 dB max. 1.25 fr-100 kHz 0.2 dB max.
0.1 dB typ.
0 .1 dB typ.
0 .1 dB typ.
0 .1 dB typ.
Total Harmonic
Distortion @ 1 kHz
D68
<-88 dB typ.
<-88 dB typ.
<-88 dB typ.
<-88 dB typ.
Wide Band Noise
(5 Hz - 2 MHz)
400 mVrms
400 mVrms typ.
500 mVrms typ.
500 mVrms typ.
Narrow Band Noise
(20 Hz - 100 kHz)
100 mVrms typ.
100 mVrms typ.
150 mVrms typ.
150 mVrms typ.
Filter Mounting
Assembly
FMA-01A
FMA-01A
FMA-01A
FMA-01A
1. Unit to unit match for the same transfer function, set to the same frequency and operating configuration, and from the same manufacturing lot.
4
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