428 Series
4-Bit Programmable
Model
Product Specifications
Transfer Function
Size
Range f
c
Theoretical Transfer
Characteristics
Passband Ripple
(theoretical)
8-Pole
Low-Pass Filters
428L4D60
428L4D80
428L4D10
428L4L
8-Pole
Bessel
0.8” x 1.8” x 0.5”
10.0 Hz to 102.4 kHz
0.0 dB
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
48 dB/octave
f
c
± 0.01% /°c
-3 dB
-182°
1.91 dB
3.01 dB
60.0 dB
80.0 dB
0 - f
c
± 2% max.
8-Pole, 6 zero
Constant Delay
0.8" x 1.8" x 0.5"
10.0 Hz to 102.4 kHz
0.15 dB
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
60 dB min.
f
c
± 0.01% /°c
-3 dB
-306°
3.01 dB
40.0 dB
60.0 dB
0 - f
c
± 2% max.
8-Pole, 6 zero
Constant Delay
0.8" x 1.8" x 0.5"
10.0 Hz to 102.4 kHz
0.15 dB
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
80 dB min.
f
c
± 0.01% /°c
-3 dB
-306°
3.01 dB
60.0 dB
80.0 dB
0 - fc
± 2% max.
8-Pole, 6 zero
Constant Delay
0.8" x 1.8" x 0.5"
10.0 Hz to 102.4 kHz
0.15 dB
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
100 dB min.
f
c
± 0.01% /°c
-3 dB
-311°
3.01 dB
80.0 dB
100.0 dB
0 - f
c
± 2% max.
DC Voltage Gain
(non-inverting)
Stopband
Attenuation Rate
Cutoff Frequency
Stability
Amplitude
Phase
Filter Attenuation
(theoretical)
0.80 f
c
1.00 f
c
4.52 f
c
6.07 f
c
± 2° max.
± 1° typ.
1.00 f
c
2.28 f
c
2.64 f
c
± 2° max.
± 1° typ.
1.00 f
c
3.08 f
c
3.57 f
c
± 2° max.
± 1° typ.
1.00 f
c
4.45 f
c
5.20 f
c
± 2° max.
± 1° typ.
± 0.2 dB max.
± 0.1 dB typ.
± 0.3 dB max.
± 0.15 dB typ.
Phase Match
1
Amplitude Accuracy
(theoretical)
0 - f
c
± 0.2 dB max. 0 - 0.8 f
c
± 0.2 dB max. 0 - 0.8 f
c
± 0.1 dB typ.
± 0.1 dB typ.
0.8 f
c
- 1.0 f
c
± 0.3 dB max. 0.8 f
c
-1.0 f
c
± 0.15 dB typ.
< - 100 dB typ.
200
mVrms
typ.
50
mVrms
typ.
± 0.2 dB max. 0 - 0.8 f
c
± 0.1 dB typ.
± 0.3 dB max. 0.8 f
c
- 1.0 f
c
± 0.15 dB typ.
< - 100 dB typ.
Total Harmonic
Distortion @ 1 kHz
Wide Band Noise
(5 Hz - 2 MHz)
< - 100 dB typ.
200
mVrms
typ.
50
mVrms
typ.
< - 100 dB typ.
200
mVrms
typ.
50
mVrms
typ.
200
mVrms
typ.
50
mVrms
typ.
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.
4
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e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com
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