818 Series
8-Bit Programmable
Model
Product Specifications
Transfer Function
Size
Range f
c
Theoretical Transfer
Characteristics
Passband Ripple
(theoretical)
8-Pole
Low-Pass Filters
818L8L
818L8E
818L8D80
818L8B
8-Pole,
Butterworth
2.0” x 4.0” x 0.4”
1 kHz to 128 MHz
0.0 dB
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
48 dB/octave
f
c
± 0.01% /°C
- 3 dB
-360°
0.12 dB
3.01 dB
60.0 dB
80.0 dB
See page 5 & 6
± 0.5 dB max.
± 0.25 dB typ.
0.6 f
c
- 1.0 f
c
± 1.0 dB max.
± 0.6 dB typ.
< - 88 dB typ.
300
µVrms
typ.
75
µVrms
typ.
0 - 0.6 f
c
± 3% max.
8-Pole,
Bessel
2.0” x 4.0” x 0.4”
1 kHz to 1.28 MHz
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
See page 5 & 6
0 - f
c
± 0.8 dB max.
± 0.4 dB typ.
± 3% max.
8-Pole, 6 zero,
Elliptic
2.0” x 4.0” x 0.4”
1 kHz to 1.28 MHz
± 0.035 dB
0 ± 0.1 dB max.
0 ± 0.05 dB typ.
80 dB min.
f
r
± 0.01% /°C
- 0.035 dB
- 323.5°
0.035 dB
3.01 dB
60.0 dB
80.0 dB
See page 5 & 6
± 0.5 dB max.
± 0.25 dB typ.
0.8 f
c
- 1.0 f
r
± 1.0 dB max.
± 0.5 dB typ.
< - 88 dB typ.
350
µVrms
typ.
75
µVrms
typ.
0 - 0.8 f
r
± 3% max.
8-Pole, 6 zero,
Constant Delay
2.0” x 4.0” x 0.4”
1 kHz to 1.28 MHz
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
See page 5 & 6
0 - 0.8 f
c
0.8 f
c
- 1.0 f
c
± 0.5 dB max.
± 0.25 dB typ.
± 1.0 dB max.
± 0.5 dB typ.
± 3% 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
2.37 f
c
3.16 f
c
0.80 f
c
1.00 f
c
4.52 f
c
6.07 f
c
1.00 f
r
1.13 f
r
1.67 f
r
1.77 f
r
1.00 f
c
3.08 f
c
3.57 f
c
Phase Match
1
Amplitude Accuracy
(theoretical)
Total Harmonic
Distortion @ 1 kHz
Wide Band Noise
(5 Hz - 2 MHz)
< - 88 dB typ.
300
µVrms
typ.
75
µVrms
typ.
< - 88 dB typ.
300
µVrms
typ.
75
µVrms
typ.
Narrow Band Noise
(5 Hz - 100 kHz)
Filter Mounting
Assembly
FMA-04A
FMA-04A
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.
3
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