Fixed Frequency

D74 & DP74 Series

4-Pole

Low-Pass and High-Pass Filters

1784 Chessie Lane, Ottawa, IL 61350 • Tel: 800/252-7074, 815/434-7800 • FAX: 815/434-8176

e-mail: sales@freqdev.com • Web Address: http://www.freqdev.com

2

Model

D74L4B & DP74L4B

D74L4L & DP74L4L

Model

D74H4B

Product Specifications

Low-Pass

Low-Pass

High-Pass

Transfer Function

4-Pole, Butterworth

4-Pole, Bessel

Transfer Function

4-Pole, Butterworth

Size

0.88” x 0.46” x 0.375”

0.88” x 0.46” x 0.375”

Size

0.88” x 0.46” x 0.375”

D74

1 Hz to 100 kHz

1 Hz to 100 kHz

1 Hz to 100 kHz

DP74

1 Hz to 5 kHz

1 Hz to 5 kHz

Theoretical Transfer

Appendix A

Appendix A

Theoretical Transfer

Appendix A

Characteristics

Page 7

Page 2

Characteristics

Page 27

Passband Ripple

0.0 dB

0.0 dB

Passband Ripple

0.0 dB

(theoretical)

(theoretical)

DC Voltage Gain

0 ± 0.1 dB typ.

0 ± 0.1 dB typ.

Voltage Gain

0 ± 0.1 dB to 100 kHz

(non-inverting)

(non-inverting)

Stopband

Stopband

Attenuation Rate

24 dB/octave

24 dB/octave

Attenuation Rate

24 dB/octave

Power Bandwidth

120 kHz

Small Signal Bandwidth

(-6 dB) 1 MHz

Cutoff Frequency

± 2% max.

± 2% max.

Cutoff Frequency

± 2% max.

Stability

± 0.03% /°C

± 0.03% /°C

Stability

± 0.03% /°C

Amplitude

-3 dB

-3 dB

Amplitude

-3 dB

Phase

-180°

-121°

Phase

-180°

Filter Attenuation

0.67 dB

1.86 dB

Filter Attenuation

80 dB

(theoretical)

3.01 dB

3.01 dB

(theoretical)

60 dB

60.0 dB

60.0 dB

3.01 dB

80.0 dB

80.0 dB

0.00 dB

Total Harmonic

Total Harmonic

Distortion @ 1 kHz

Distortion @ 1 kHz

D74

<-70 dB

<-70 dB

D74

<-70 dB

DP74

<-70 dB

<-70 dB

Wide Band Noise

200

mVrms typ.

200

mVrms typ.

Wide Band Noise

400

mVrms typ.

(5 Hz - 2 MHz)

(5 Hz - 2 MHz)

Narrow Band Noise

50

mVrms typ.

50

mVrms typ.

Narrow Band Noise

100

mVrms typ.

(20 Hz - 100 kHz)

(20 Hz - 100 kHz)

Filter Mounting

Filter Mounting

Assembly

FMA-01A

FMA-01A

Assembly

FMA-01A