818 Series
8-Pole
High-Pass Filters
8-Bit Programmable
Model
818H8B
818H8E
Product Specifications
Transfer Function
8-Pole,
Butterworth
8-Pole, 6-zero,
Elliptic
Size
2.0” x 4.0” x 0.4”
1 kHz to 1.28 MHz
2.0” x 4.0” x 0.4”
1 kHz to 1.28 MHz
Range fc
Theoretical Transfer
Characteristics
Appendix A
Page 29
Appendix A
Page 37
Passband Ripple
(theoretical)
0.0 dB
0.035 dB
Voltage Gain
(non-inverting)
0
0.5 dB to 1.28 MHz
0 0.5 dB to 1.28 MHz
Power Bandwidth
(-6 dB) 5 MHz
(-6 dB) 5 MHz
Stopband
Attenuation Rate
48 dB/octave
80 dB
Cutoff Frequency
Stability
Amplitude
Phase
fc
3% max.
fr
3% max.
0.01% /°C
- 3 dB
-360°
0.01% /°C
- 0.035 dB
-323.5°
Filter Attenuation
(theoretical)
80 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
00.0 dB
0.56 fr
0.60 fr
0.88 fr
1.00 fr
2.00 fr
60 dB
3.01 dB
0.00 dB
Amplitude Accuracy
(theoretical)
1.0 - 1.25 fc
0.5 dB max. 1.00 - 1.25 fr 0.5 dB max.
0.3 dB typ. 0.3 dB typ.
1.25fc-1.28MHz 1.0 dB max. 1.25fr-1.28MHz 1.0 dB max.
0.5 dB typ. 0.5 dB typ.
Total Harmonic
Distortion @ 1 kHz
< - 88 dB typ.
< - 88 dB typ.
Wide Band Noise
400 µVrms typ.
100 µVrms typ.
450 µVrms typ.
100 µVrms typ.
Narrow Band Noise
Filter Mounting
Assembly
FMA-04A
FMA-04A
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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