424 Series
4-Pole
Low-Pass Filters
4-Bit Programmable
Model
424L4B
424L4L
424L4Y2
424L4Y5
Product Specifications
Transfer Function
4-Pole,
Butterworth
4-Pole,
Bessel
4-Pole, Chebychev,
0.2 dB Ripple
4-Pole, Chebychev,
0.5 dB Ripple
Size
0.8” x 1.8” x 0.3”
0.8" x 1.8" x 0.3"
0.8" x 1.8" x 0.3"
0.8" x 1.8" x 0.3"
Range fc
10.0 Hz to 102.4 kHz
10.0 Hz to 102.4 kHz
10.0 Hz to 102.4 kHz
10.0 Hz to 102.4 kHz
Theoretical Transfer
Characteristics
Appendix A
Page 7
Appendix A
Page 2
Appendix A
Page 12
Appendix A
Page 15
Passband Ripple
(theoretical)
0.0 dB
0.0 dB
0.20 dB
0.50 dB
DC Voltage Gain
(non-inverting)
0
0
0.1 dB max.
0.05 dB typ.
0
0
0.1 dB max.
0.05 dB typ.
0
0
0.1 dB max.
0.05 dB typ.
0
0
0.1 dB max.
0.05 dB typ.
Stopband
Attenuation Rate
24 dB/octave
24 dB/octave
24 dB/octave
24 dB min.
Cutoff Frequency
Stability
Amplitude
Phase
fc
2% max.
fc
2% max.
fc
2% max.
fc
2% max.
0.01% /°C
-3 dB
-180°
0.01% /°C
-3 dB
-121°
0.01% /°C
-3 dB
-231°
0.01% /°C
-3 dB
-245°
Filter Attenuation
(theoretical)
0.67 dB
3.01 dB
30.0 dB
40.0 dB
0.80 fc
1.00 fc
2.37 fc
3.16 fc
1.86 dB
3.01 dB
30.0 dB
40.0 dB
0.80 fc
1.00 fc
3.50 fc
4.72 fc
-0.20 dB
3.01 dB
30.0 dB
40.0 dB
0.80 fc -0.43 dB
0.80 fc
1.00 fc
1.80 fc
2.33 fc
1.00 fc 3.01 dB
1.89 fc 30.0 dB
2.46 fc 40.0 dB
1
Phase Match
0 - 0.8 fc
2° max.
1° typ.
0 - fc
2° max.
1° typ.
0 - 0.8 fc
2° max.
1° typ.
0 - 0.8 fc
2° max.
1° typ.
3° max.
1.5° typ.
0.8 fc - 1.0 fc 3° max.
1.5° typ.
0.8 fc - 1.0 fc 3° max.
1.5° typ.
0.8 fc - 1.0 fc
Amplitude Accuracy
(theoretical)
0 - 0.8 fc
0.2 dB max. 0 - fc
0.1 dB typ.
0.2 dB max. 0 - 0.8 fc
0.1 dB typ.
0.2 dB max. 0 - 0.8 fc
0.2 dB max.
0.1 dB typ.
0.3 dB max.
0.15 dB typ.
0.1 dB typ.
0.8 fc - 1.0 fc 0.3 dB max.
0.15 dB typ.
0.8 fc - 1.0 fc 0.3 dB max. 0.8 fc - 1.0 fc
0.15 dB typ.
Total Harmonic
< - 100 dB typ.
200 mVrms typ.
50 mVrms typ.
< - 100 dB typ.
200 mVrms typ.
50 mVrms typ.
< - 88 dB typ.
200 mVrms typ.
50 mVrms typ.
< - 88 dB typ.
200 mVrms typ.
50 mVrms typ.
Distortion @ 1 kHz
Wide Band Noise
(5 Hz - 2 MHz)
Narrow Band Noise
(5 Hz - 100 kHz)
Filter Mounting
Assembly
FMA-02A
FMA-02A
FMA-02A
FMA-02A
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
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e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com