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828 Series
8-Pole
Low-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
8-Bit Programmable
1.Unit to unit match for the same transfer function, set to the same frequency and operating configuration, and from the same manufacturing lot.
3
Model
828L8B
828L8E
828L8EX
828L8EY
Product Specifications
Transfer Function
8-Pole
8-Pole, 6 zero
8-Pole, 6 zero
8-Pole, 6 zero
Butterworth
Elliptic
Elliptic
Elliptic
Size
2.0” x 2.0” x 0.5”
2.0” x 2.0” x 0.5”
2.0” x 2.0” x 0.5”
2.0” x 2.0” x 0.5”
Range fc, fr
1.0 Hz to 102.4 kHz
1.0 Hz to 102.4 kHz
1.0 Hz to 102.4 kHz
1.0 Hz to 102.4 kHz
Theoretical Transfer
Appendix A
Appendix A
Appendix A
Appendix A
Characteristics
Page 9
Page 24
Page 23
Page 25
Passband Ripple
0.0 dB
± 0.035 dB
- 0.05 dB
- 0.05 dB
(theoretical)
DC Voltage Gain
0 ± 0.1 dB max.
0 ± 0.1 dB max.
0 ± 0.1 dB max.
0 ± 0.1 dB max.
(non-inverting)
0 ± 0.05 dB typ.
0 ± 0.05 dB typ.
0 ± 0.05 dB typ.
0 ± 0.05 dB typ.
Stopband
Attenuation Rate
48 dB/octave
80 dB min.
80 dB min.
100 dB min.
Cutoff Frequency
fc
± 2% max.
fr
± 2% max.
fr
± 2% max.
fr
± 2% max.
Stability
± 0.01% /°c
± 0.01% /°c
± 0.01% /°c
± 0.01% /°c
Amplitude
-3 dB
-0.035 dB
-0.05dB
-0.05 dB
Phase
-360°
-323.5°
-414°
-419°
Filter Attenuation
0.12 dB
0.80 fc
0.035 dB
1.00 fr
0.05 dB
1.00 fr
0.05 dB
1.00 fr
(theoretical)
3.01 dB
1.00 fc
3.01 dB
1.13 fr
3.01 dB
1.05 fr
3.01 dB
1.06 fr
60.0 dB
2.37 fc
60.0 dB
1.67 fr
60.0 dB
1.45 fr
80.0 dB
1.83 fr
80.0 dB
3.16 fc
80.0 dB
1.77 fr
80.0 dB
1.56 fr
100.0 dB
2.00 fr
Phase Match1
0 - 0.8 fc
± 2° max.
0 - 0.8 fr
± 2° max.
0 - 0.8 fr
± 3° max.
0 - 0.8 fr
± 3° max.
± 1° typ.
± 1° typ.
± 1.5° typ.
± 1.5° typ.
0.8 fc - 1.0 fc ± 3° max.
0.8 fr - 1.0 fr ± 4° max.
0.8 fr - 1.0 fr ± 4° max.
0.8 fr - 1.0 fr
± 4° max.
± 1.5° typ.
± 2° typ.
± 2° typ.
± 2° typ.
Amplitude Accuracy
0 - 0.8 fc
± 0.2 dB max.
0 - 0.8 fr
± .2 dB max.
0 - 0.8 fr
± 0.2 dB max.
0 - 0.8 fr
± 0.2 dB max.
(theoretical)
± 0.1 dB typ.
± .1 dB typ.
± 0.1 dB typ.
± 0.1 dB typ.
0.8 fc - 1.0 fc ± 0.3 dB max.
0.8 fr - 1.0 fr ± .3 dB max.
0.8 fr - 1.0 fr ± 0.5 dB max.
0.8 fr - 1.0 fr
± 0.5 dB max.
± 0.15 dB typ.
± .15 dB typ.
± 0.25 dB typ.
± 0.25 dB typ.
Total Harmonic
< - 100 dB typ.
< - 88 dB typ.
< - 88 dB typ.
< - 88 dB typ.
Distortion @ 1kHz
Wide Band Noise
200
µVrms typ.
200
µVrms typ.
250
µVrms typ.
250
µVrms typ.
(5 Hz - 2 MHz)
Narrow Band Noise
50
µVrms typ.
50
µVrms typ.
75
µVrms typ.
75
µVrms typ.
(5 Hz - 100 kHz)
Filter Mounting
Assembly
FMA-02A
FMA-02A
FMA-02A
FMA-02A